The Soft Matter Science and Engineering Center of the University of Chemical Technology announced that its researchers have worked with the Lawrence Berkeley National Laboratory team to discover a new type of magnetic fluid that can control magnetic nanoparticles at the water-oil interface. The self-assembly of Neodymium Disc Magnet supplier (https://www.zhijiangmagnet.com/product/neodymium-magnet/) finally led to the successful transformation of ferromagnetic fluid from paramagnetism to ferromagnetism.
Generally, the magnet is no longer a hard solid, but can also be a flowing liquid. According to reports, solid magnetic materials are ubiquitous in small household appliances such as refrigerators, and large space equipment such as magnetic navigation devices. Generally, liquid magnetic materials such as conventional ferrofluids have a flexible shape, but do not have magnetic poles themselves, and can only be magnetized by an external magnetic field to exhibit specific magnetism.
The ferromagnetic droplets or liquid magnets found in this study have both the magnetic properties of solid magnets and the fluidity of liquids. The combination of the two forms a new magnetic soft material. The researchers combined water-based magnetic fluid materials with organic Phase, the carboxylated ferric oxide magnetic nanoparticles dispersed in the water phase and the aminated cage silsesquiane are dissolved and mixed in the adjacent oil phase.
SmCo Ring Magnets Company ( https://www.zhijiangmagnet.com/product/smco-magnet/ ) Oxane interacts at the water-oil interface, self-assembles in situ to form a magnetic nanoparticle surfactant, which adsorbs to the interface and blocks the phase change to form ferromagnetic droplets. The measurement of the hysteresis loop of the droplet at room temperature shows that, unlike the conventional paramagnetic magnetic fluid, the droplet exhibits a certain degree of remanence and coercivity, and is transformed into ferromagnetism.
Generally, the magnet is no longer a hard solid, but can also be a flowing liquid. According to reports, solid magnetic materials are ubiquitous in small household appliances such as refrigerators, and large space equipment such as magnetic navigation devices. Generally, liquid magnetic materials such as conventional ferrofluids have a flexible shape, but do not have magnetic poles themselves, and can only be magnetized by an external magnetic field to exhibit specific magnetism.
The ferromagnetic droplets or liquid magnets found in this study have both the magnetic properties of solid magnets and the fluidity of liquids. The combination of the two forms a new magnetic soft material. The researchers combined water-based magnetic fluid materials with organic Phase, the carboxylated ferric oxide magnetic nanoparticles dispersed in the water phase and the aminated cage silsesquiane are dissolved and mixed in the adjacent oil phase.
SmCo Ring Magnets Company ( https://www.zhijiangmagnet.com/product/smco-magnet/ ) Oxane interacts at the water-oil interface, self-assembles in situ to form a magnetic nanoparticle surfactant, which adsorbs to the interface and blocks the phase change to form ferromagnetic droplets. The measurement of the hysteresis loop of the droplet at room temperature shows that, unlike the conventional paramagnetic magnetic fluid, the droplet exhibits a certain degree of remanence and coercivity, and is transformed into ferromagnetism.
The skills and classification of SmCo Magnet Company ( https://www.zhijiangmagnet.com/product/smco-magnet/ ) magnets mainly include
1. Including lifting electromagnet, braking electromagnet, traction electromagnet, push-pull electromagnet, frame electromagnet, tubular electromagnet, rotating electromagnet, holding electromagnet, two-way corner electromagnet, suction cup electromagnet Iron, DC wet valve electromagnet, communication wet valve electromagnet, embroidery electromechanical magnet, permanent magnetic suction cup, magnetic steel corner electromagnet, automobile electromagnet, rotating electromagnet, flap electromagnet, valve electromagnet, active Electromagnetic systems of electrical appliances, electromagnetic vibrators, and soft iron, silicon steel sheets, gear irons, jackets, iron cores, coils, rectifier control equipment and electromagnet production equipment used in electric power magnets. Electromagnetic iron remover, permanent magnet iron remover, magnetic separator, magnetic roller, magnetic screen and other iron removal equipment and supporting equipment, etc.
2. Ndfeb Magnet Manufacturer Price ( https://www.zhijiangmagnet.com/product/neodymium-magnet/ ) is mainly used in aerospace, machinery, metallurgy, mining, shipbuilding, power electronics, coal, mining, electric tools, transportation, lifting and transportation, home appliances, motors, door locks, textiles, game consoles, medical devices , Fitness equipment, office equipment, vending machines, smart toys, building materials, chemicals, plastics, glass, ceramics, cement, paper, food, feed, water treatment and other professional manufacturers, operators, professional buyers, overseas traders, high-end Colleges, research institutes and other related occupations.
1. Including lifting electromagnet, braking electromagnet, traction electromagnet, push-pull electromagnet, frame electromagnet, tubular electromagnet, rotating electromagnet, holding electromagnet, two-way corner electromagnet, suction cup electromagnet Iron, DC wet valve electromagnet, communication wet valve electromagnet, embroidery electromechanical magnet, permanent magnetic suction cup, magnetic steel corner electromagnet, automobile electromagnet, rotating electromagnet, flap electromagnet, valve electromagnet, active Electromagnetic systems of electrical appliances, electromagnetic vibrators, and soft iron, silicon steel sheets, gear irons, jackets, iron cores, coils, rectifier control equipment and electromagnet production equipment used in electric power magnets. Electromagnetic iron remover, permanent magnet iron remover, magnetic separator, magnetic roller, magnetic screen and other iron removal equipment and supporting equipment, etc.
2. Ndfeb Magnet Manufacturer Price ( https://www.zhijiangmagnet.com/product/neodymium-magnet/ ) is mainly used in aerospace, machinery, metallurgy, mining, shipbuilding, power electronics, coal, mining, electric tools, transportation, lifting and transportation, home appliances, motors, door locks, textiles, game consoles, medical devices , Fitness equipment, office equipment, vending machines, smart toys, building materials, chemicals, plastics, glass, ceramics, cement, paper, food, feed, water treatment and other professional manufacturers, operators, professional buyers, overseas traders, high-end Colleges, research institutes and other related occupations.
A Neodymium magnet may be used to supply a triggering field for a Strong Neodymium Magnets suppliers. At various times of operation, the magnet may be exposed to a temperature which reduces the magnetic field to a level which the sensor will not be triggered. Other than during the high temperature exposure, the magnet will supply a sufficient field to trigger the sensor. The magnet does not totally demagnetize nor does it suffer lasting effects from the high temperature exposure. Repeated exposures are not additive, but the sensor is not triggered during the high temperature phase of operation. When the magnet is inspected at room temperature, it will measure fine and exhibit no apparent loss. The Neo magnet alloy was not selected properly for the limited high temperature operation even though it actually survived the high temperature exposures without suffering an irreversible demagnetizing loss.
The magnet described in the example above is said to have experienced a reversible loss. The magnet only experienced a magnetic field loss that was reversible when it cooled back down. The magnet was not taken above a temperature threshold where permanent demagnetization occurred such that the loss was not recovered when cooled back to room temperature. The magnet in the example could be exposed to yet a higher temperature where it experiences a partial, irreversible demagnetization. At this higher temperature the magnetic field would again be reduced when compared to the starting point at room temperature; however, when the magnet cools back down it will not recover the entire lost field. A small portion of the magnet has demagnetized and no longer contributes to the net field produced by the magnet. This loss is considered irreversible. Higher and higher temperatures further demagnetize greater portions of the magnet. At some temperature, the magnet will totally demagnetize and no magnet orientation will exist within the magnet. This temperature is the Curie Temperature, Tc and the magnet will be rendered useless far before this point. (The Curie Temperature is not the maximum recommended operating temperature.)
Maximum Recommended Operating Temperature of Neodymium Magnets:
The operating temperature of a Neo magnet is dependent upon several variables.
The Neo magnets Intrinsic Coercive Force will dictate much of the magnet’s ability to withstand exposures to elevated operational temperatures. At face value it seems simple to select a Neo magnet that is advertised to tolerate 120°C of heat for an application that has a maximum exposure potential of 120°C. The challenge is that the neo magnet’s ability to tolerate heat is also dependent upon the geometry of the magnet. Most neo magnet suppliers will qualify the recommend maximum operating temperature with a minimum Length / *Diameter (L/D) ratio or a minimum permeance coefficient (Pc). This helps account for the geometry impact and heat tolerance and it is a good first order estimate of heat tolerance.
(* The diameter is either the actual diameter or the equivalent diameter of the circle having the same pole cross-sectional area of the non-round shape. This first order estimate (L/D) is reserved for simple geometric shapes. Magnets which deviate from simple shapes, magnetic arrays, and magnetic assemblies must be evaluated differently to determine upper temperature thresholds.)
Simply put, magnets that are long compared to their pole cross-sections have a better ability to resist demagnetization for high temperature exposures.
The second variable which impacts the maximum recommended operating temperature is the exposure to external demagnetizing fields. If the magnet is used in a Brushless DC motor (BLDC), it will experience external demagnetizing fields. This additional form of demagnetization further erodes the heat tolerance of Neo magnet alloy.
Nomenclature for Describing Magnetic Performance
The Residual Induction (Br) indicates the available magnetic flux output from the magnet. The RTC of the Residual Induction (Br) is the % Change of Br / °C and is usually denoted by the symbol (α). The Intrinsic Coercive Force (Hci) indicates the magnet’s ability to withstand demagnetizing, typically used for demagnetization from heat exposure and from external magnetic fields. RTC of the Intrinsic Coercive Force (Hci) is the % Change of Hci / °C and is usually denoted by the symbol (β).
The rates of change are treated as being linear between some constrained temperature range. In all actuality they are a small segment of a temperature response curve for the particular neo grade that can be treated as linear.
Magnets and Heat Conclusions
Unless a magnet will always exist at or near room temperature, it is imperative that a review is done to ensure the grade is selected properly for the particular application. Magnets with higher heat tolerance are more costly, but the risk with an improper Neo alloy is a failure in the field.
As an professional neodymium magnet manufacturer, we will provide the reasonable Ndfeb Magnet for sale, Welcome to consult.
Also, there may be no elevated heat condition experienced in the application, but what about the manufacturing process? Thermal curing adhesives or powder-coating may expose the Neo magnets to temperatures where an irreversible loss can occur. This also includes plastic over-molding, brazing, sterilization, etc.https://www.zhijiangmagnet.com
The magnet described in the example above is said to have experienced a reversible loss. The magnet only experienced a magnetic field loss that was reversible when it cooled back down. The magnet was not taken above a temperature threshold where permanent demagnetization occurred such that the loss was not recovered when cooled back to room temperature. The magnet in the example could be exposed to yet a higher temperature where it experiences a partial, irreversible demagnetization. At this higher temperature the magnetic field would again be reduced when compared to the starting point at room temperature; however, when the magnet cools back down it will not recover the entire lost field. A small portion of the magnet has demagnetized and no longer contributes to the net field produced by the magnet. This loss is considered irreversible. Higher and higher temperatures further demagnetize greater portions of the magnet. At some temperature, the magnet will totally demagnetize and no magnet orientation will exist within the magnet. This temperature is the Curie Temperature, Tc and the magnet will be rendered useless far before this point. (The Curie Temperature is not the maximum recommended operating temperature.)
Maximum Recommended Operating Temperature of Neodymium Magnets:
The operating temperature of a Neo magnet is dependent upon several variables.
The Neo magnets Intrinsic Coercive Force will dictate much of the magnet’s ability to withstand exposures to elevated operational temperatures. At face value it seems simple to select a Neo magnet that is advertised to tolerate 120°C of heat for an application that has a maximum exposure potential of 120°C. The challenge is that the neo magnet’s ability to tolerate heat is also dependent upon the geometry of the magnet. Most neo magnet suppliers will qualify the recommend maximum operating temperature with a minimum Length / *Diameter (L/D) ratio or a minimum permeance coefficient (Pc). This helps account for the geometry impact and heat tolerance and it is a good first order estimate of heat tolerance.
(* The diameter is either the actual diameter or the equivalent diameter of the circle having the same pole cross-sectional area of the non-round shape. This first order estimate (L/D) is reserved for simple geometric shapes. Magnets which deviate from simple shapes, magnetic arrays, and magnetic assemblies must be evaluated differently to determine upper temperature thresholds.)
Simply put, magnets that are long compared to their pole cross-sections have a better ability to resist demagnetization for high temperature exposures.
The second variable which impacts the maximum recommended operating temperature is the exposure to external demagnetizing fields. If the magnet is used in a Brushless DC motor (BLDC), it will experience external demagnetizing fields. This additional form of demagnetization further erodes the heat tolerance of Neo magnet alloy.
Nomenclature for Describing Magnetic Performance
The Residual Induction (Br) indicates the available magnetic flux output from the magnet. The RTC of the Residual Induction (Br) is the % Change of Br / °C and is usually denoted by the symbol (α). The Intrinsic Coercive Force (Hci) indicates the magnet’s ability to withstand demagnetizing, typically used for demagnetization from heat exposure and from external magnetic fields. RTC of the Intrinsic Coercive Force (Hci) is the % Change of Hci / °C and is usually denoted by the symbol (β).
The rates of change are treated as being linear between some constrained temperature range. In all actuality they are a small segment of a temperature response curve for the particular neo grade that can be treated as linear.
Magnets and Heat Conclusions
Unless a magnet will always exist at or near room temperature, it is imperative that a review is done to ensure the grade is selected properly for the particular application. Magnets with higher heat tolerance are more costly, but the risk with an improper Neo alloy is a failure in the field.
As an professional neodymium magnet manufacturer, we will provide the reasonable Ndfeb Magnet for sale, Welcome to consult.
Also, there may be no elevated heat condition experienced in the application, but what about the manufacturing process? Thermal curing adhesives or powder-coating may expose the Neo magnets to temperatures where an irreversible loss can occur. This also includes plastic over-molding, brazing, sterilization, etc.https://www.zhijiangmagnet.com
We take a closer look at Magnetic Linear Coupler. Similar to a Magnetic Torque Coupler, a Magnetic Linear Coupler relies on the magnetic interaction between two coupler halves. As in the Torque Coupler, usually one half is the driver, and the other half is the follower. Linear Couplers are often simpler to design and to construct when compared to Torque Couplers because the movement is linear and non-rotational.
A Linear Coupler can be as simple as two Strong Neodymium Magnets suppliers or more complex as to be comprised of engineered arrays containing multiple magnets of various configurations. The operational gap between the coupler’s halves, the required coupling force, and the operating environment are the prime design variables.
There are many variations of Linear Couplers. The fundamental similarity is that the coupler’s “halves” are “linked” through a gap. One “half” can propagate the other “half” without contact. All of the common and unique designs for Linear Couplers try to minimize cost, increase performance, and make use of the application specific geometry.
One common style of Linear Couplers is simple magnets on a backing-plate. The magnets are sized based on the gap and desired force to be transferred. (As previously discussed, the larger the gap, the less magnetic flux linking will occur, and this results in a lower coupler force.) The simplest design uses two magnets alternating NORTH – SOUTH. The backing-plate connects the non-working faces of the magnets and increases the effective field in the gap, and therefore, the coupling force.
The magnet’s cross-sectional area, the magnetic length, the spacing between the magnets, the backing-plate alloy, and the backing-plate thickness are all variables in the design and need to be optimized for the needs of the particular application.
The two magnets per “coupler half” system can be expanded to three or more magnets per half to add additional coupling force. The constraint is the available space and cost.
The second most common Linear Coupler style uses “steel poles” as the working areas and is used extensively in “round” applications, especially when pipes are employed.
Ideally “radially” orientated magnets would be used for this geometry, but this orientation is very challenging to produce, is very expensive, and has limits on the OR and IR of the magnets.
To circumvent this limitation, axially-orientated magnets are used in conjunction with steel poles. This facilitates 360° coupling. The magnets are “sandwiched” by the steel poles, and the magnet-steel pole pattern alternates to the required axial length. The axial length of the coupler halves is the primary driver for the coupling force.
Similar to a Torque Coupler, this style of Linear Coupler has Inner and Outer array halves; however, there is no rotational coupling capacity.
We know that design, utility, and external variables are inextricably connected in many applications. Magnetic Linear Couplers are no different.
Do not hesitate to contact us,as an professional Neodymium Magnet Manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
A Linear Coupler can be as simple as two Strong Neodymium Magnets suppliers or more complex as to be comprised of engineered arrays containing multiple magnets of various configurations. The operational gap between the coupler’s halves, the required coupling force, and the operating environment are the prime design variables.
There are many variations of Linear Couplers. The fundamental similarity is that the coupler’s “halves” are “linked” through a gap. One “half” can propagate the other “half” without contact. All of the common and unique designs for Linear Couplers try to minimize cost, increase performance, and make use of the application specific geometry.
One common style of Linear Couplers is simple magnets on a backing-plate. The magnets are sized based on the gap and desired force to be transferred. (As previously discussed, the larger the gap, the less magnetic flux linking will occur, and this results in a lower coupler force.) The simplest design uses two magnets alternating NORTH – SOUTH. The backing-plate connects the non-working faces of the magnets and increases the effective field in the gap, and therefore, the coupling force.
The magnet’s cross-sectional area, the magnetic length, the spacing between the magnets, the backing-plate alloy, and the backing-plate thickness are all variables in the design and need to be optimized for the needs of the particular application.
The two magnets per “coupler half” system can be expanded to three or more magnets per half to add additional coupling force. The constraint is the available space and cost.
The second most common Linear Coupler style uses “steel poles” as the working areas and is used extensively in “round” applications, especially when pipes are employed.
Ideally “radially” orientated magnets would be used for this geometry, but this orientation is very challenging to produce, is very expensive, and has limits on the OR and IR of the magnets.
To circumvent this limitation, axially-orientated magnets are used in conjunction with steel poles. This facilitates 360° coupling. The magnets are “sandwiched” by the steel poles, and the magnet-steel pole pattern alternates to the required axial length. The axial length of the coupler halves is the primary driver for the coupling force.
Similar to a Torque Coupler, this style of Linear Coupler has Inner and Outer array halves; however, there is no rotational coupling capacity.
We know that design, utility, and external variables are inextricably connected in many applications. Magnetic Linear Couplers are no different.
Do not hesitate to contact us,as an professional Neodymium Magnet Manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
Due to the scarcity of fossil fuels and the incidents in different nuclear power reactors, the use of wind energy has acquired a new relevance. Due to the change in energy policies that many consider necessary, wind energy is becoming increasingly important, being one of the options as a renewable energy source.
The operating principle, is that a wind turbine collects the kinetic energy of the wind and converts this energy, through a generator, into electrical energy. The wind represents a form of alternative energy, very respectful of the environment, which is available with relative frequency, although in different degrees, due to the temperature differences between day and night and the turbulence induced by atmospheric climate conditions.
Potential increase through use of SmCo Magnets and ferrite magnets
If there is a relative movement between a magnetic field and an electrical current conductor located within it, an electric current flows through the conductor when the circuit is closed. The resulting voltage and current depend on the speed of relative motion and the intensity of the magnetic field.
It is easy to see that with a weaker magnetic field, a higher speed of this relative movement of the conductor is necessary to obtain an economical electrical power from the wind turbine.
An increase in the speed of movement can be achieved in conventional wind turbines, by a transmission, connected between the wind rotor and the generator. The higher the ratio of this transmission, the greater will be its mechanical losses, which in turn reduces the overall efficiency of the wind turbine. Therefore, the desire is to keep the transmission ratio as short as possible. Of course, this requires a stronger magnetic field in the generator. Of all the magnetic materials known today, neodymium magnets are the strongest. They can generate stable and very powerful magnetic fields. Ferrite magnets can also be used, in cases where their resistance to corrosion and humidity is of interest.
Optimal magnets for the conversion of energy into electricity
Conventional wind turbines operate at helix speeds of 10 to 12 rpm. However, the induction generator requires a speed of 1800 U / min.
In order to move forward with the energy change that has been deemed necessary, the search for options to optimize newer wind turbines, has also intensified. Since the use of permanent magnets promises greater energy efficiency, neodymium magnets and ferrite magnets have been investigated. The rotors of permanent magnets in the generators must inevitably have a larger diameter to achieve a higher peripheral speed. In addition, a large number of permanent magnets must be installed, forming a circle.
An essential measure of the performance of wind turbines is the use of magnets, enabling the calculation of the magnetic mass used in kg per MW of power generated. For older wind turbines up to 4 MW, the use of this magnet is 600 kg per MW of power. For the newer plants with a capacity of 5 MW, this value is around 500 kg per MW of output. Using these guidelines, it is possible to obtain a higher economic performance of the wind turbine, even at lower wind speeds.
Conclusion
The development of wind turbines has experienced a far-reaching increase for reasons of environmental protection and, to counteract global climate change, which is also promoted by the state. In the optimization of wind turbines, the use of high performance permanent magnets plays an increasingly important role.
Do not hesitate to contact us,as an professional Alnico Ring Magnets manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
The operating principle, is that a wind turbine collects the kinetic energy of the wind and converts this energy, through a generator, into electrical energy. The wind represents a form of alternative energy, very respectful of the environment, which is available with relative frequency, although in different degrees, due to the temperature differences between day and night and the turbulence induced by atmospheric climate conditions.
Potential increase through use of SmCo Magnets and ferrite magnets
If there is a relative movement between a magnetic field and an electrical current conductor located within it, an electric current flows through the conductor when the circuit is closed. The resulting voltage and current depend on the speed of relative motion and the intensity of the magnetic field.
It is easy to see that with a weaker magnetic field, a higher speed of this relative movement of the conductor is necessary to obtain an economical electrical power from the wind turbine.
An increase in the speed of movement can be achieved in conventional wind turbines, by a transmission, connected between the wind rotor and the generator. The higher the ratio of this transmission, the greater will be its mechanical losses, which in turn reduces the overall efficiency of the wind turbine. Therefore, the desire is to keep the transmission ratio as short as possible. Of course, this requires a stronger magnetic field in the generator. Of all the magnetic materials known today, neodymium magnets are the strongest. They can generate stable and very powerful magnetic fields. Ferrite magnets can also be used, in cases where their resistance to corrosion and humidity is of interest.
Optimal magnets for the conversion of energy into electricity
Conventional wind turbines operate at helix speeds of 10 to 12 rpm. However, the induction generator requires a speed of 1800 U / min.
In order to move forward with the energy change that has been deemed necessary, the search for options to optimize newer wind turbines, has also intensified. Since the use of permanent magnets promises greater energy efficiency, neodymium magnets and ferrite magnets have been investigated. The rotors of permanent magnets in the generators must inevitably have a larger diameter to achieve a higher peripheral speed. In addition, a large number of permanent magnets must be installed, forming a circle.
An essential measure of the performance of wind turbines is the use of magnets, enabling the calculation of the magnetic mass used in kg per MW of power generated. For older wind turbines up to 4 MW, the use of this magnet is 600 kg per MW of power. For the newer plants with a capacity of 5 MW, this value is around 500 kg per MW of output. Using these guidelines, it is possible to obtain a higher economic performance of the wind turbine, even at lower wind speeds.
Conclusion
The development of wind turbines has experienced a far-reaching increase for reasons of environmental protection and, to counteract global climate change, which is also promoted by the state. In the optimization of wind turbines, the use of high performance permanent magnets plays an increasingly important role.
Do not hesitate to contact us,as an professional Alnico Ring Magnets manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
MAGNETS AND ACOUSTICS
Magnets have always been fundamental pieces in the industry. Whether in electric motors, rotors or in measurement technology. The properties of the Ring Neodymium Magnetic energy fields are versatile. An industrial sector in which magnets are used very frequently and with high quality is the music industry. Whether it’s loudspeaker technology, acoustics or the soft plucking of electric guitar strings, we find magnetism everywhere. So let’s take a closer look at the features and applications.
SOUND SYSTEMS AND LOUDSPEAKERS
Listening is one of the most important assets in the world of modern technology. Music and sound accompany us in almost every part of everyday life. Whether through the hands-free car, the mobile phone music app or enjoy the spectacular Dolby Surround in the cinema.
The speaker is closely related to magnetism, since it converts an electrical signal into an acoustic signal. There are two types of magnets inside each speaker. An electromagnet and a permanent magnet. The electromagnet generates a magnetic field through a coil. By reversing the direction of current flow, the poles can be reversed. The permanent magnet located in front of the electromagnet attracts it and pushes it. The result of the pulse or vibration is transmitted to a membrane and passes through sound waves to our ear. The frequency of the vibrations of the membrane affects the level of sound. The amplitude generated influences the volume.
THE MAGNETS IN THE MICROPHONE
A microphone works according to the same principle, but vice versa. Convert sound waves into electrical energy. Strong magnets, with a high energy density, installed in confined spaces.
OPERATION OF THE ELECTRIC GUITAR WITH MAGNETS
Magnets have more applications in music. The performance of an electric guitar is also based on strong magnets. The electromagnetic pickup located in the front part of the body picks up the vibrations and amplifies them. This electrical signal is supported by means of a permanent magnet, which is mounted below the cords. This permanent magnet is at the same time covered with a coil. The vibrations of the strings cause an alteration of the magnetic field, which in turn causes an AC voltage in the coil. An amplifier amplifies and transmits the weak signal.
INFLUENCE OF MAGNETS
Electric guitars basically have two different types of pickups. On the one hand, the classic Humbucker, uses two coils that increase the output, and because the polarity of the two coils is inverse, noise and interference are reduced and on the other hand, the single coil, which is formed by a metallic thread wound to the metallic core. They differ mainly in shape and energy density. But also different magnetic materials influence the sound character of an electric guitar.
Strong magnets are felt by the modified volume compared to the weaker ferroimano alone. Therefore, strong magnets control the most powerful amplifier, but at the same time also cause greater inertia in the vibrations of the string. The different types of magnets not only generate different volumes, but reflect much more different characters of a guitar. A “soft” or “bell” sound is usually due to magnetic force.
Do not hesitate to contact us,as an professional SmCo Ring Magnets Manufacturers, We will offer the best service for every customer.https://www.zhijiangmagnet.com
Magnets have always been fundamental pieces in the industry. Whether in electric motors, rotors or in measurement technology. The properties of the Ring Neodymium Magnetic energy fields are versatile. An industrial sector in which magnets are used very frequently and with high quality is the music industry. Whether it’s loudspeaker technology, acoustics or the soft plucking of electric guitar strings, we find magnetism everywhere. So let’s take a closer look at the features and applications.
SOUND SYSTEMS AND LOUDSPEAKERS
Listening is one of the most important assets in the world of modern technology. Music and sound accompany us in almost every part of everyday life. Whether through the hands-free car, the mobile phone music app or enjoy the spectacular Dolby Surround in the cinema.
The speaker is closely related to magnetism, since it converts an electrical signal into an acoustic signal. There are two types of magnets inside each speaker. An electromagnet and a permanent magnet. The electromagnet generates a magnetic field through a coil. By reversing the direction of current flow, the poles can be reversed. The permanent magnet located in front of the electromagnet attracts it and pushes it. The result of the pulse or vibration is transmitted to a membrane and passes through sound waves to our ear. The frequency of the vibrations of the membrane affects the level of sound. The amplitude generated influences the volume.
THE MAGNETS IN THE MICROPHONE
A microphone works according to the same principle, but vice versa. Convert sound waves into electrical energy. Strong magnets, with a high energy density, installed in confined spaces.
OPERATION OF THE ELECTRIC GUITAR WITH MAGNETS
Magnets have more applications in music. The performance of an electric guitar is also based on strong magnets. The electromagnetic pickup located in the front part of the body picks up the vibrations and amplifies them. This electrical signal is supported by means of a permanent magnet, which is mounted below the cords. This permanent magnet is at the same time covered with a coil. The vibrations of the strings cause an alteration of the magnetic field, which in turn causes an AC voltage in the coil. An amplifier amplifies and transmits the weak signal.
INFLUENCE OF MAGNETS
Electric guitars basically have two different types of pickups. On the one hand, the classic Humbucker, uses two coils that increase the output, and because the polarity of the two coils is inverse, noise and interference are reduced and on the other hand, the single coil, which is formed by a metallic thread wound to the metallic core. They differ mainly in shape and energy density. But also different magnetic materials influence the sound character of an electric guitar.
Strong magnets are felt by the modified volume compared to the weaker ferroimano alone. Therefore, strong magnets control the most powerful amplifier, but at the same time also cause greater inertia in the vibrations of the string. The different types of magnets not only generate different volumes, but reflect much more different characters of a guitar. A “soft” or “bell” sound is usually due to magnetic force.
Do not hesitate to contact us,as an professional SmCo Ring Magnets Manufacturers, We will offer the best service for every customer.https://www.zhijiangmagnet.com
When discussing magnets and magnetic properties, the term “Curie temperature” or “Curie point” is frequently mentioned. The Curie temperature is defined as the maximum temperature a material can reach before it loses its magnetic properties. When a magnetic material reaches its Curie temperature, the spontaneous magnetization in the material drops to zero. At this point, it will no longer be a ferromagnetic material, and will instead become a paramagnetic material.
To explain the difference between ferromagnetic and paramagnetic materials, we must return to what creates the force of magnetism in a material in the first place. A material’s force of magnetism is determined by its magnetic moment, which is a dipole moment within in atom originating from the spin and angular momentum of electrons. Different materials have different structures of intrinsic magnetic moments, and the alignment of these intrinsic Neodymium Disc Magnet factoryic moments is dependent on temperature.
When a material reaches its Curie temperature, it has reached a critical point when the intrinsic magnetic moments within it change direction.
In order for a material to be magnetic, its magnetic moments must be aligned in a specific way. Induced magnetism, then, is created when a collection of disordered magnetic moments are forcibly aligned in an applied magnetic field. When a material reaches its Curie temperature, its alignment of magnetic moments is forcibly made to be disordered. Following this principle, as materials are exposed to increasingly higher temperatures, their magnetic strength weakens as the temperature moves closer to the material’s Curie temperature and magnetic moments begin to shift out of alignment. As a general rule, magnets are weaker when exposed to higher temperatures.
Different types of magnets have different maximum operating temperatures. A material’s Curie temperature is one of the variables that determines the maximum operating temperature of any given magnetic material.
Maximum operating temperature is an extremely important factor to consider when selecting a magnet for an application. Typically, strength is considered the most important trait of a magnet, but a magnet that becomes demagnetized as a result of high operating temperatures ends up with no strength at all. Alnico magnets have the highest maximum operating temperature, and can tolerate temperatures between 450-900°C. Samarium cobalt magnets, a type of powerful rare earth magnet, have the second highest maximum operating temperature, and can tolerate temperatures between 250-350°C. Standard neodymium magnets have a maximum operating temperature of 80°C, although high temperature neodymium magnets can be used at operating temperatures from 140-200°C. Finally, ceramic magnets have a maximum operating temperature of up to 300°C.
When selecting a magnet for any given application, the operating temperature must be taken into consideration. Each magnet material has a different maximum operating temperature, and all magnets weaken in strength as they exposed to higher temperatures.
Do not hesitate to contact us,as an professional N52 Rare Earth Magnets suppliers manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
To explain the difference between ferromagnetic and paramagnetic materials, we must return to what creates the force of magnetism in a material in the first place. A material’s force of magnetism is determined by its magnetic moment, which is a dipole moment within in atom originating from the spin and angular momentum of electrons. Different materials have different structures of intrinsic magnetic moments, and the alignment of these intrinsic Neodymium Disc Magnet factoryic moments is dependent on temperature.
When a material reaches its Curie temperature, it has reached a critical point when the intrinsic magnetic moments within it change direction.
In order for a material to be magnetic, its magnetic moments must be aligned in a specific way. Induced magnetism, then, is created when a collection of disordered magnetic moments are forcibly aligned in an applied magnetic field. When a material reaches its Curie temperature, its alignment of magnetic moments is forcibly made to be disordered. Following this principle, as materials are exposed to increasingly higher temperatures, their magnetic strength weakens as the temperature moves closer to the material’s Curie temperature and magnetic moments begin to shift out of alignment. As a general rule, magnets are weaker when exposed to higher temperatures.
Different types of magnets have different maximum operating temperatures. A material’s Curie temperature is one of the variables that determines the maximum operating temperature of any given magnetic material.
Maximum operating temperature is an extremely important factor to consider when selecting a magnet for an application. Typically, strength is considered the most important trait of a magnet, but a magnet that becomes demagnetized as a result of high operating temperatures ends up with no strength at all. Alnico magnets have the highest maximum operating temperature, and can tolerate temperatures between 450-900°C. Samarium cobalt magnets, a type of powerful rare earth magnet, have the second highest maximum operating temperature, and can tolerate temperatures between 250-350°C. Standard neodymium magnets have a maximum operating temperature of 80°C, although high temperature neodymium magnets can be used at operating temperatures from 140-200°C. Finally, ceramic magnets have a maximum operating temperature of up to 300°C.
When selecting a magnet for any given application, the operating temperature must be taken into consideration. Each magnet material has a different maximum operating temperature, and all magnets weaken in strength as they exposed to higher temperatures.
Do not hesitate to contact us,as an professional N52 Rare Earth Magnets suppliers manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
In everyday life, there are a lot of objects that use magnets. In fact, even if you can’t identify it directly or be aware of it, everything that works around you makes use of Strong Neodymium Magnets suppliers and the magnetic field.
Magnets can be found in the simplest or most complex devices you use every day. From home appliances such as the refrigerator, microwave oven and electric fan, to your company’s office equipment such as computers and printers. All these devices use magnets.
In this sense, we will now look at 13 objects that use magnets and that we use in our daily lives.
Magnets in the bedroom
Duvet covers. Magnets are used in some duvet covers to keep them closed.
Hanging art. Hook magnets can be used to hang art from walls and posters. They can also be used to organize closets by hanging scarves, jewelry, belts, and more.
Bags and jewelry. Bags often incorporate magnets in closures. Magnetic closures are also used to make jewelry.
Television. All televisions have cathode ray tubes, or CRTs, and these have magnets inside. In fact, televisions specifically use electromagnets that direct the flow of energy to the corners, sides, and half of your television screen.
Doorbell. It’s not exactly in the bedroom, but the doorbell has magnets, and it may have several, and you’ll know it simply by listening to the amount of tones it produces. The bells also contain solenoids, which causes a spring-loaded piston to strike a bell. It happens twice, because when you release the button, the magnet passes underneath the piston and causes it to strike.
The kitchen is full of magnets
Microwave magnets. Microwave ovens use magnetrons consisting of magnets to generate electromagnetic waves that heat food.
Refrigerator doors. Refrigerators and freezers are sealed with a magnetic mechanism so they are easy to open from the inside.
Spice and knife rack. A magnetic spice rack with neodymium magnets is easy to make and useful for cleaning valuable counter space. Also a knife rack is excellent for organizing kitchen utensils.
More magnets in the office
Many cabinet doors are secured with magnetic latches against unintentional opening.
Computers use magnets in a variety of ways. First, the hard drive’s disk is covered with small magnets, which allow computers to store data. Then, CRT computer screens are produced as television screens and, of course, use electromagnets.
Organizing office supplies. Neodymium magnets are useful for organization. Metal office supplies such as clips and thumbtacks will stick to the magnet so they don’t move.
Magnets in the dining room?
Extendable tables. Extendable tables with additional pieces can use magnets to hold the table in place.
When you have an outdoor party, use magnets to keep the tablecloth in place. The magnets will prevent it from flying in the wind along with everything that sits on the table. Magnets also won’t damage the table with holes or tape residue.
Now, when you use one of these items that use magnets, you won’t do it the same way anymore, and you’ll probably be a little more attentive to identify the magnet on them.
Do not hesitate to contact us,as an professional Neodymium Magnet Manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
Magnets can be found in the simplest or most complex devices you use every day. From home appliances such as the refrigerator, microwave oven and electric fan, to your company’s office equipment such as computers and printers. All these devices use magnets.
In this sense, we will now look at 13 objects that use magnets and that we use in our daily lives.
Magnets in the bedroom
Duvet covers. Magnets are used in some duvet covers to keep them closed.
Hanging art. Hook magnets can be used to hang art from walls and posters. They can also be used to organize closets by hanging scarves, jewelry, belts, and more.
Bags and jewelry. Bags often incorporate magnets in closures. Magnetic closures are also used to make jewelry.
Television. All televisions have cathode ray tubes, or CRTs, and these have magnets inside. In fact, televisions specifically use electromagnets that direct the flow of energy to the corners, sides, and half of your television screen.
Doorbell. It’s not exactly in the bedroom, but the doorbell has magnets, and it may have several, and you’ll know it simply by listening to the amount of tones it produces. The bells also contain solenoids, which causes a spring-loaded piston to strike a bell. It happens twice, because when you release the button, the magnet passes underneath the piston and causes it to strike.
The kitchen is full of magnets
Microwave magnets. Microwave ovens use magnetrons consisting of magnets to generate electromagnetic waves that heat food.
Refrigerator doors. Refrigerators and freezers are sealed with a magnetic mechanism so they are easy to open from the inside.
Spice and knife rack. A magnetic spice rack with neodymium magnets is easy to make and useful for cleaning valuable counter space. Also a knife rack is excellent for organizing kitchen utensils.
More magnets in the office
Many cabinet doors are secured with magnetic latches against unintentional opening.
Computers use magnets in a variety of ways. First, the hard drive’s disk is covered with small magnets, which allow computers to store data. Then, CRT computer screens are produced as television screens and, of course, use electromagnets.
Organizing office supplies. Neodymium magnets are useful for organization. Metal office supplies such as clips and thumbtacks will stick to the magnet so they don’t move.
Magnets in the dining room?
Extendable tables. Extendable tables with additional pieces can use magnets to hold the table in place.
When you have an outdoor party, use magnets to keep the tablecloth in place. The magnets will prevent it from flying in the wind along with everything that sits on the table. Magnets also won’t damage the table with holes or tape residue.
Now, when you use one of these items that use magnets, you won’t do it the same way anymore, and you’ll probably be a little more attentive to identify the magnet on them.
Do not hesitate to contact us,as an professional Neodymium Magnet Manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
High Temperature SmCo Magnet
2021年7月19日 Neodymium magnets, a member of the rare earth magnet family, are well known for being the strongest magnets available. However, compared to samarium cobalt rare earth magnets, SmCo Magnets do not have the same tolerance for high temperatures. Samarium cobalt magnets have a working temperature of up to 300°C, but standard neodymiums only have a working temperature of up to 80°C, at which point they begin to lose their magnetic strength. Because samarium cobalt magnets are also members of the rare earth magnet family, they are still very strong, and significantly stronger than ceramic and alnico magnets. However, samarium cobalt magnets cannot deliver the same strength as neo magnets. To address the need for neo magnets in applications with maximum temperatures exceeding 80°C, high temperature neodymium magnets have been developed.
It should not be implied that neodymium magnets are easily demagnetized, as they (like other rare earth magnets) have an excellent resistance to demagnetization. If a neo magnet is dropped or exposed to other magnets, it will not lose its magnetic strength.
However, if a neodymium magnet is heated above its Curie temperature, it will completely lose its magnetization. Additionally, as a neodymium magnet is heated to temperatures approaching its Curie temperature, it will gradually lose magnetization and become progressively weaker as temperatures increase. Neodymium magnets also lose their resistance to demagnetization as they are heated above room temperature.
High Temperature Neodymium Magnets vs. Samarium Cobalt Magnets
Samarium cobalt magnets, with their higher working temperature, are commonly used in applications where neo magnets are unable to tolerate higher temperatures. However, samarium cobalt magnets do not always meet the strength requirements demanded by certain applications. To resolve this issue, high temperature neodymium magnets have been developed.
Do not hesitate to contact us,as an professional Alnico Ring Magnets manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
It should not be implied that neodymium magnets are easily demagnetized, as they (like other rare earth magnets) have an excellent resistance to demagnetization. If a neo magnet is dropped or exposed to other magnets, it will not lose its magnetic strength.
However, if a neodymium magnet is heated above its Curie temperature, it will completely lose its magnetization. Additionally, as a neodymium magnet is heated to temperatures approaching its Curie temperature, it will gradually lose magnetization and become progressively weaker as temperatures increase. Neodymium magnets also lose their resistance to demagnetization as they are heated above room temperature.
High Temperature Neodymium Magnets vs. Samarium Cobalt Magnets
Samarium cobalt magnets, with their higher working temperature, are commonly used in applications where neo magnets are unable to tolerate higher temperatures. However, samarium cobalt magnets do not always meet the strength requirements demanded by certain applications. To resolve this issue, high temperature neodymium magnets have been developed.
Do not hesitate to contact us,as an professional Alnico Ring Magnets manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
Ring Neodymium Magnets are designed to be attached directly to a steel surface. This is a large magnet that serves as a base, enclosed within a steel casing, its magnetism is on one side only and creates a solid holding force, without the need for any electricity.
Nylon injection gives the magnet excellent mechanical properties
Allows thousands of operations without wear and tear.
Ideal for continuous movements.
Eliminates metal noises in automatic operations.
Corrosion resistant, very suitable for wet surfaces.
The resin coating allows handling and working without damaging any surface.
The steel cover helps the magnetic bases to increase their holding power, after providing greater strength and stability. However, magnetic bases cannot be used to attract other magnets or to attract them through a hole as they have a shallow depth of magnetic field.
Parts of the magnet:
Magnet. The north pole of the magnetic bases is in the center of the magnet, with the south pole around the outer edge. The configuration of the magnetic poles creates a closed circuit when the magnet is attached to a ferromagnetic material, which provides a stronger grip. A closed circuit is where the magnetic field is trapped inside the ferromagnetic material when it attaches to the magnet.
Steel housing. The steel cover is a casing for the magnet and protects it from any chipping or cracking from contact with a hard surface and any demagnetizing effect. Magnetic bases provide resistance for the magnet and help make the magnetic field up to thirty-two times stronger than other magnets by concentrating it on a single magnetic face. This means that it can hold large objects such as supermarket signs from the ceiling without any additional support.
Separator. A spacer or separator acts as a barrier between the magnet and the steel casing to prevent any demagnetizing effect the steel may have on the magnet. This element can be made of brass or plastic.
Rubber. Magnetic bases can have a rubber coating on the top of their steel casing, allowing them to be used on surfaces where the user does not want the magnet to scratch, such as the roof of a car.
What are the uses of pot magnets?
There are many ways to use magnetic bases and these are some of their applications:
Lamps. The magnet is attached to the end of the light to keep it on the metal in a roof.
Exhibition posters. They can be used to place an exhibition poster on a stand for marketing purposes, for example, at a trade fair.
Hooks. Magnetic bases can be fitted with an additional hook, and can be used to hang items such as cups on the refrigerator door.
Meter base. An articulated measuring arm, for example, can also be used as a magnetic base for meters. An articulated measuring arm is used to accurately position objects.
Door stops. Among the uses of magnetic bases also stand out as door stops, to prevent the door from closing to the wall keeping it open.
As has been said, the operation of magnetic bases is basic: They attach to ferromagnetic materials, unlike permanent magnets, where the magnetic field lines extend around the magnet and do not focus on the surface to which the magnet attaches.
Since the magnetic field is concentrated in one area, it does not allow the magnet to attract ferromagnetic materials through a large air space. This is because the magnetic field lines will not stretch beyond the sides of the cover.
Do not hesitate to contact us,as an professional SmCo Ring Magnets Manufacturers, We will offer the best service for every customer.https://www.zhijiangmagnet.com
Nylon injection gives the magnet excellent mechanical properties
Allows thousands of operations without wear and tear.
Ideal for continuous movements.
Eliminates metal noises in automatic operations.
Corrosion resistant, very suitable for wet surfaces.
The resin coating allows handling and working without damaging any surface.
The steel cover helps the magnetic bases to increase their holding power, after providing greater strength and stability. However, magnetic bases cannot be used to attract other magnets or to attract them through a hole as they have a shallow depth of magnetic field.
Parts of the magnet:
Magnet. The north pole of the magnetic bases is in the center of the magnet, with the south pole around the outer edge. The configuration of the magnetic poles creates a closed circuit when the magnet is attached to a ferromagnetic material, which provides a stronger grip. A closed circuit is where the magnetic field is trapped inside the ferromagnetic material when it attaches to the magnet.
Steel housing. The steel cover is a casing for the magnet and protects it from any chipping or cracking from contact with a hard surface and any demagnetizing effect. Magnetic bases provide resistance for the magnet and help make the magnetic field up to thirty-two times stronger than other magnets by concentrating it on a single magnetic face. This means that it can hold large objects such as supermarket signs from the ceiling without any additional support.
Separator. A spacer or separator acts as a barrier between the magnet and the steel casing to prevent any demagnetizing effect the steel may have on the magnet. This element can be made of brass or plastic.
Rubber. Magnetic bases can have a rubber coating on the top of their steel casing, allowing them to be used on surfaces where the user does not want the magnet to scratch, such as the roof of a car.
What are the uses of pot magnets?
There are many ways to use magnetic bases and these are some of their applications:
Lamps. The magnet is attached to the end of the light to keep it on the metal in a roof.
Exhibition posters. They can be used to place an exhibition poster on a stand for marketing purposes, for example, at a trade fair.
Hooks. Magnetic bases can be fitted with an additional hook, and can be used to hang items such as cups on the refrigerator door.
Meter base. An articulated measuring arm, for example, can also be used as a magnetic base for meters. An articulated measuring arm is used to accurately position objects.
Door stops. Among the uses of magnetic bases also stand out as door stops, to prevent the door from closing to the wall keeping it open.
As has been said, the operation of magnetic bases is basic: They attach to ferromagnetic materials, unlike permanent magnets, where the magnetic field lines extend around the magnet and do not focus on the surface to which the magnet attaches.
Since the magnetic field is concentrated in one area, it does not allow the magnet to attract ferromagnetic materials through a large air space. This is because the magnetic field lines will not stretch beyond the sides of the cover.
Do not hesitate to contact us,as an professional SmCo Ring Magnets Manufacturers, We will offer the best service for every customer.https://www.zhijiangmagnet.com
Magnetic liquids have been around for a long time. More specifically, we have known for about 150 years. that liquids can have magnetic properties by adding iron particles to them. However, as with most inventions and discoveries, the prototype, while functional, was not entirely ideal. It was not until 1965 that the composition was optimized and only magnetic fluids, also called Neodymium Disc Magnet factoryic ferrofluids, were officially studied.
What are magnetic ferrofluids made of?
Of course, magnetic liquids do not occur entirely naturally. They always consist of a carrier liquid in which magnetizable particles are mixed. For example, the oil can also be transformed into a magnetic liquid, which can help with possible dirt, for example, thanks to magnetism to separate the oil from the water and, therefore, to clean the latter again very easily.
Using so-called surfactants, the magnetic particles, often magnetite, are processed to have the same structure as the carrier liquid, allowing for optimal mixing. For the liquid to have a magnetic effect, an external magnetic field is necessary in order to “charge” the particles.
What are magnetic fluids for?
Since this is an extraordinary and perhaps not too common substance, it may be a little more difficult to think of possible areas of application for magnetic liquids. However, there are many:
Seal
Damped
Storage
Separation
Units
Medical technology
Sensor technology
Let’s take a closer look at how the magnetic liquid acts as a seal, which is also the most common application. Why? Precisely because it is very reliable and precise. As it is a liquid, it can adapt perfectly to all shapes and molds. Thanks to the magnetic field of an external permanent magnet, it not only stays in place, but also withstands extreme pressures. Therefore, it is not surprising that magnetic liquids are used as seals, especially during space travel and space industry, where particular toxic substances must also be prevented from entering.
Therefore, magnetic fluids perform complex and extremely important tasks in a wide variety of industries. This is why it is in fact a revolutionary development which can certainly also be used in other fields.
Do not hesitate to contact us,as an professional Sm2Co17 Magnet manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
What are magnetic ferrofluids made of?
Of course, magnetic liquids do not occur entirely naturally. They always consist of a carrier liquid in which magnetizable particles are mixed. For example, the oil can also be transformed into a magnetic liquid, which can help with possible dirt, for example, thanks to magnetism to separate the oil from the water and, therefore, to clean the latter again very easily.
Using so-called surfactants, the magnetic particles, often magnetite, are processed to have the same structure as the carrier liquid, allowing for optimal mixing. For the liquid to have a magnetic effect, an external magnetic field is necessary in order to “charge” the particles.
What are magnetic fluids for?
Since this is an extraordinary and perhaps not too common substance, it may be a little more difficult to think of possible areas of application for magnetic liquids. However, there are many:
Seal
Damped
Storage
Separation
Units
Medical technology
Sensor technology
Let’s take a closer look at how the magnetic liquid acts as a seal, which is also the most common application. Why? Precisely because it is very reliable and precise. As it is a liquid, it can adapt perfectly to all shapes and molds. Thanks to the magnetic field of an external permanent magnet, it not only stays in place, but also withstands extreme pressures. Therefore, it is not surprising that magnetic liquids are used as seals, especially during space travel and space industry, where particular toxic substances must also be prevented from entering.
Therefore, magnetic fluids perform complex and extremely important tasks in a wide variety of industries. This is why it is in fact a revolutionary development which can certainly also be used in other fields.
Do not hesitate to contact us,as an professional Sm2Co17 Magnet manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
Magnetic permeability is the connection between magnetic flux (B) and magnetic field intensity (H). Apart from ferrous metals, which have a high permeability and various metals, which have much lower magnetic permeability, however, it is greater than unity.
The magnetic permeability of most materials is unity, such as insulating materials such as glass and plastic. Within permeability there are several types of permeability, but today we will delve into absolute permeability. Absolute permeability is the ability of a rock to provide fluid flow through holes connected to each other. This type of permeability is totally saturated because of a fluid.
Absolute permeability is called the degree of magnetization found in a material as a reaction to a Strong Neodymium Magnets suppliers field. This permeability can be symbolized as µ.
To obtain this degree we can use two formulas:
µ = B / H
– B = The magnetic field intensity
– H = It is the magnetic exaltation
µ = µr µ0
– µr = relative magnetic permeability
– µ0 = magnetic permeability of the vacuum
Absolute permeability is calculated when the flow completely saturates the porous media. The permeability coefficient is directly linked to Darcy’s Law which refers to the flow of fluids through soils. As we have said previously, this coefficient is represented by the letter k. Darcy’s law allows us to specify the behavior of a fluid through a porous medium.
The lower the absolute permeability, the greater the relative permeability curvature of the non-wetting phase, this phase has a lower relative permeability.
There are several ways to measure the coefficient of permeability:
– It is measured in a laboratory we can find the constant load and variable load permeameter.
– Can be measured on site
– It can be measured empirically, either Allen-Hazen, Loudon, Terzagui, Schilichter, horizontal capillary test
To measure absolute permeability, a permeameter is required, which is the instrument we need to measure it.
Next, we can see a permeameter:
Do not hesitate to contact us,as an professional Neodymium Magnet Manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
The magnetic permeability of most materials is unity, such as insulating materials such as glass and plastic. Within permeability there are several types of permeability, but today we will delve into absolute permeability. Absolute permeability is the ability of a rock to provide fluid flow through holes connected to each other. This type of permeability is totally saturated because of a fluid.
Absolute permeability is called the degree of magnetization found in a material as a reaction to a Strong Neodymium Magnets suppliers field. This permeability can be symbolized as µ.
To obtain this degree we can use two formulas:
µ = B / H
– B = The magnetic field intensity
– H = It is the magnetic exaltation
µ = µr µ0
– µr = relative magnetic permeability
– µ0 = magnetic permeability of the vacuum
Absolute permeability is calculated when the flow completely saturates the porous media. The permeability coefficient is directly linked to Darcy’s Law which refers to the flow of fluids through soils. As we have said previously, this coefficient is represented by the letter k. Darcy’s law allows us to specify the behavior of a fluid through a porous medium.
The lower the absolute permeability, the greater the relative permeability curvature of the non-wetting phase, this phase has a lower relative permeability.
There are several ways to measure the coefficient of permeability:
– It is measured in a laboratory we can find the constant load and variable load permeameter.
– Can be measured on site
– It can be measured empirically, either Allen-Hazen, Loudon, Terzagui, Schilichter, horizontal capillary test
To measure absolute permeability, a permeameter is required, which is the instrument we need to measure it.
Next, we can see a permeameter:
Do not hesitate to contact us,as an professional Neodymium Magnet Manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
We occasionally get inquiries and manufacturing prints identifying a custom Ring Neodymium Magnet shape using the abbreviation Neo. Because shorthand works – both internally and in discussions with our customers – we likewise sometimes refer to a Neodymium magnet as Neo or NdFeB. Of the rare earth element magnets, Neo magnets are the most commonly specified because they have the highest known energy product for their mass. One might possibly expect the Neo name to mean “new” – and that could be a reasonable assumption based on the fact that they were initially created relatively recently in 1984. The abbreviated name, however, actually comes from the element Neodymium – or Nd.
But there is a bit of a “new” twist to the naming story. In 1885, Carl Auer von Welsbach discovered that a substance known as (and previously misclassified as an element) ‘Didymium’ was actually a mixture of two entirely new elements. Welsbach successfully reacted Didymium to form nitrate salts, which he then fractionally crystallized from nitric acid to yield pink Neodymium and greenish-brown Praseodymium salts. Welsbach chose the name Praseodymium, which from Greek indicates ‘green twin.’ Compounds of praseodymium are green. Neodymium was named with ‘neos didymos’ – Greek for ‘new twin,’ reflecting Neodymium’s close association with praseodymium.
Neodymium Rectangle Magnet neodymium magnets actually go by a few different abbreviations, but they all refer to the same magnet. This rare earth element magnet’s full name is Neodymium Iron Boron, so in addition to “Neo magnets” and “NdFeB magnets,” they are also sometimes referred to as “NIB magnets.” By the way, the full formula for the alloy NdFeB is Nd2Fe14B.
As previously stated, Neo magnets provide the greatest performance to volume ratio available, and work best up to 150º C. Samarium Cobalt (or SmCo5) magnets – another commonly specified rare earth magnet – are often better specified for industrial applications where temperatures will rise above 150º C.
It is important to note that Neo magnets typically require a protective coating, as they are prone to corrosion. One typical coating for NdFeB magnets is a triple layer plating of Nickel, Copper, and Nickel (Ni-Cu-Ni).
Whether you call them a Neo magnet, NIB, NdFeB, or Neodymium Iron Boron magnet, these are the same, high-quality industrial magnet. As is the case with all magnet materials, when selecting Neodymium for your application, it is important to use the correct Neodymium magnet grade, and to be aware of the magnet’s physical and environmental operating limitations.
Do not hesitate to contact us,as an professional SmCo Ring Magnets Manufacturers, We will offer the best service for every customer.https://www.zhijiangmagnet.com
But there is a bit of a “new” twist to the naming story. In 1885, Carl Auer von Welsbach discovered that a substance known as (and previously misclassified as an element) ‘Didymium’ was actually a mixture of two entirely new elements. Welsbach successfully reacted Didymium to form nitrate salts, which he then fractionally crystallized from nitric acid to yield pink Neodymium and greenish-brown Praseodymium salts. Welsbach chose the name Praseodymium, which from Greek indicates ‘green twin.’ Compounds of praseodymium are green. Neodymium was named with ‘neos didymos’ – Greek for ‘new twin,’ reflecting Neodymium’s close association with praseodymium.
Neodymium Rectangle Magnet neodymium magnets actually go by a few different abbreviations, but they all refer to the same magnet. This rare earth element magnet’s full name is Neodymium Iron Boron, so in addition to “Neo magnets” and “NdFeB magnets,” they are also sometimes referred to as “NIB magnets.” By the way, the full formula for the alloy NdFeB is Nd2Fe14B.
As previously stated, Neo magnets provide the greatest performance to volume ratio available, and work best up to 150º C. Samarium Cobalt (or SmCo5) magnets – another commonly specified rare earth magnet – are often better specified for industrial applications where temperatures will rise above 150º C.
It is important to note that Neo magnets typically require a protective coating, as they are prone to corrosion. One typical coating for NdFeB magnets is a triple layer plating of Nickel, Copper, and Nickel (Ni-Cu-Ni).
Whether you call them a Neo magnet, NIB, NdFeB, or Neodymium Iron Boron magnet, these are the same, high-quality industrial magnet. As is the case with all magnet materials, when selecting Neodymium for your application, it is important to use the correct Neodymium magnet grade, and to be aware of the magnet’s physical and environmental operating limitations.
Do not hesitate to contact us,as an professional SmCo Ring Magnets Manufacturers, We will offer the best service for every customer.https://www.zhijiangmagnet.com
You get a variety of options to choose from when searching for customized magnets cheap. The Neodymium Disc Magnet factory are versatile and popular for their magnetic strength and unique shapes. The neodymium magnets are prepared from neodymium, iron, and boron. The mix of these three elements turns these magnets into the strongest available magnets on this planet.
This magnet does not rust because of nickel plated surface. Hence the neodymium magnets are cheap and widely available, they are used in a huge range of electronic, artistic, and mechanical products. If you are also planning to buy one, you should consider a few important things before you place the order.
What shape’s neodymium magnet you want?
Different shapes’ neodymium magnets are used for different demands. Whether you are looking for design magnets to produce something artistic or simply need a small but powerful magnet, check all the shape magnets available in the market. You can get neodymium magnets in a variety of shapes such as rod/disks, disk countersunks, squares, rings, spheres, square countersunks, etc. All the magnets in these shapes will be nickel painted to prevent rusting. The strength and unique shape of these magnets can provide great support in any application.
The size:
When buying custom designed magnets, it is quite important to choose a right size. You might need the magnet for producing an electronic product or industrial equipment. One size of the magnet does not fit for all the equipment and devices. Though small size custom industrial magnets are also quite powerful, but they cannot replace giant sized neodymium magnets for heavy jobs. You should carefully consult the size of the magnet before you place the order to ensure you will receive the right one for your job.
Choose a reliable manufacturer:
A number of custom magnet manufacturers are available in the market. Most of them claim to offer high-quality service. They claim to offer all sizes and all shapes’ neodymium magnets but eventually they end up by restricting the design and shape options. You should discuss all your demands prior to placing the order to placing the order. Thus, you can ensure you will receive what you are paying for. Buying custom shaped neodymium magnets from local manufacturer may be a risky deal because you may end up by paying an expensive price. You should search for the manufacturers online and then pick the best one for placing a bulk order.
Buying custom neodymium magnets becomes an easy task when the manufacturer already has standard types and sizes of this magnet. You cannot deny the fact that neodymium magnets are the best when it comes to strength and availability. Their sensitivity to high temperatures makes them a bit risky to invest. However, you can find a manufacturer who can produce neodymium magnets by adding additional materials to reduce temperature sensitivity. Thus, you will be able to use this magnet in a variety of applications without spending a lot on buying different types’ magnets.
Do not hesitate to contact us,as an professional Sm2Co17 Magnet manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
This magnet does not rust because of nickel plated surface. Hence the neodymium magnets are cheap and widely available, they are used in a huge range of electronic, artistic, and mechanical products. If you are also planning to buy one, you should consider a few important things before you place the order.
What shape’s neodymium magnet you want?
Different shapes’ neodymium magnets are used for different demands. Whether you are looking for design magnets to produce something artistic or simply need a small but powerful magnet, check all the shape magnets available in the market. You can get neodymium magnets in a variety of shapes such as rod/disks, disk countersunks, squares, rings, spheres, square countersunks, etc. All the magnets in these shapes will be nickel painted to prevent rusting. The strength and unique shape of these magnets can provide great support in any application.
The size:
When buying custom designed magnets, it is quite important to choose a right size. You might need the magnet for producing an electronic product or industrial equipment. One size of the magnet does not fit for all the equipment and devices. Though small size custom industrial magnets are also quite powerful, but they cannot replace giant sized neodymium magnets for heavy jobs. You should carefully consult the size of the magnet before you place the order to ensure you will receive the right one for your job.
Choose a reliable manufacturer:
A number of custom magnet manufacturers are available in the market. Most of them claim to offer high-quality service. They claim to offer all sizes and all shapes’ neodymium magnets but eventually they end up by restricting the design and shape options. You should discuss all your demands prior to placing the order to placing the order. Thus, you can ensure you will receive what you are paying for. Buying custom shaped neodymium magnets from local manufacturer may be a risky deal because you may end up by paying an expensive price. You should search for the manufacturers online and then pick the best one for placing a bulk order.
Buying custom neodymium magnets becomes an easy task when the manufacturer already has standard types and sizes of this magnet. You cannot deny the fact that neodymium magnets are the best when it comes to strength and availability. Their sensitivity to high temperatures makes them a bit risky to invest. However, you can find a manufacturer who can produce neodymium magnets by adding additional materials to reduce temperature sensitivity. Thus, you will be able to use this magnet in a variety of applications without spending a lot on buying different types’ magnets.
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The use of as-cast or near net shape magnets is almost always a preferred design path, but this is not always feasible. This is where machining comes into play. Some of the machining techniques common in the metalworking arena are modified and adapted to create special design features or to achieve specified tolerances on Ring Neodymium Magnet. So if you are wondering—yes, we can machine some magnets—but there are important considerations associated with the process.
There are two basic scenarios that require magnet machining. In some instances, a design engineer will request a magnet with machined features (e.g., special shapes, blind holes, counter-sinks, retaining shoulders, tapers, and threads). Magnet machining is also used to further tighten dimensional tolerances created during the casting or sintering process. Regardless of the scenario, machining may be required, but the characteristically hard and brittle nature of most magnets makes the process difficult. It is possible to grind, drill, and EDM magnetic materials using specialized tools and machinery to fabricate distinct shapes, but you’ll need to partner with a magnet manufacturer with the requisite skill sets. What follows is a brief introduction to the specific challenges associated with machining common magnetic alloys.
Alnico is a magnetic alloy cast of aluminum, nickel, cobalt, iron. The casting process normally yields a part close to the final size, with only the critical feature requirements receiving additional machining operations. Sintered alnico is less common but may allow the manufacturer to integrate more intricate features into the magnet without additional machining. Both cast and sintered alnico magnets are machined using abrasive grinding wheels, core drills, or EDM. Porosity is a common condition with cast alnico and it usually doesn’t affect the magnetic performance.
Neodymium Iron Boron is a rare earth magnetic alloy that is most commonly sintered into blocks or discs. Bonded neodymium iron boron magnets, which are produced by combining magnetic powder with a non-magnetic binder are easily machined but only produced in lower energy densities. We can integrate steps, chamfers, holes, and other custom features in neodymium magnets. Grinding neodymium magnets creates pyrophoric dust, so it is imperative to keep the magnets cool during machining. Additional consideration should also be given to the prevention of surface oxidation during and after the machining of neodymium magnets.
Samarium Cobalt is another type of rare earth magnetic material, and like neodymium, this alloy is commonly sintered into blocks or discs. Similar features can be produced in samarium cobalt magnets, but due to its very brittle composition, special care needs to be given when machining and handling samarium cobalt magnets.
Ceramic magnets are produced by calcination and then pressed and compacted into a die. The die pressed parts are then sintered to their final shapes. Ceramic magnets are incredibly hard and somewhat brittle. Diamond tooling and some abrasives are common means of fabrication with ceramic magnets. Regardless of the material type, most magnetic materials are machined or ground in the un-magnetized state with magnetization being completed post processing. Completing the fabrication steps in this order minimizes the potential harm done by the build-up of heat, which can adversely affect the magnetic properties of these alloys.
Do not hesitate to contact us,as an professional SmCo Ring Magnets Manufacturers, We will offer the best service for every customer.https://www.zhijiangmagnet.com
There are two basic scenarios that require magnet machining. In some instances, a design engineer will request a magnet with machined features (e.g., special shapes, blind holes, counter-sinks, retaining shoulders, tapers, and threads). Magnet machining is also used to further tighten dimensional tolerances created during the casting or sintering process. Regardless of the scenario, machining may be required, but the characteristically hard and brittle nature of most magnets makes the process difficult. It is possible to grind, drill, and EDM magnetic materials using specialized tools and machinery to fabricate distinct shapes, but you’ll need to partner with a magnet manufacturer with the requisite skill sets. What follows is a brief introduction to the specific challenges associated with machining common magnetic alloys.
Alnico is a magnetic alloy cast of aluminum, nickel, cobalt, iron. The casting process normally yields a part close to the final size, with only the critical feature requirements receiving additional machining operations. Sintered alnico is less common but may allow the manufacturer to integrate more intricate features into the magnet without additional machining. Both cast and sintered alnico magnets are machined using abrasive grinding wheels, core drills, or EDM. Porosity is a common condition with cast alnico and it usually doesn’t affect the magnetic performance.
Neodymium Iron Boron is a rare earth magnetic alloy that is most commonly sintered into blocks or discs. Bonded neodymium iron boron magnets, which are produced by combining magnetic powder with a non-magnetic binder are easily machined but only produced in lower energy densities. We can integrate steps, chamfers, holes, and other custom features in neodymium magnets. Grinding neodymium magnets creates pyrophoric dust, so it is imperative to keep the magnets cool during machining. Additional consideration should also be given to the prevention of surface oxidation during and after the machining of neodymium magnets.
Samarium Cobalt is another type of rare earth magnetic material, and like neodymium, this alloy is commonly sintered into blocks or discs. Similar features can be produced in samarium cobalt magnets, but due to its very brittle composition, special care needs to be given when machining and handling samarium cobalt magnets.
Ceramic magnets are produced by calcination and then pressed and compacted into a die. The die pressed parts are then sintered to their final shapes. Ceramic magnets are incredibly hard and somewhat brittle. Diamond tooling and some abrasives are common means of fabrication with ceramic magnets. Regardless of the material type, most magnetic materials are machined or ground in the un-magnetized state with magnetization being completed post processing. Completing the fabrication steps in this order minimizes the potential harm done by the build-up of heat, which can adversely affect the magnetic properties of these alloys.
Do not hesitate to contact us,as an professional SmCo Ring Magnets Manufacturers, We will offer the best service for every customer.https://www.zhijiangmagnet.com
Strong Neodymium Magnets suppliers are by far the strongest type of permanent magnet available. Magnet advancements are a history of increasing coercivity. Neodymium magnets are both stronger and less apt to be demagnetized than other magnet types.
Where do these N numbers come from?
The performance of a magnet material is defined by that material’s hysteresis curve, also known as a Demagnetization Curve or BH Curve. The Maximum Energy Product is the point on this curve where the B value multiplied by the H value is at its maximum.
At a point on the curve, multiply the "B" value (in kilo Gauss) by the "H" value (in kilo Oersted) to get the Maximum Energy Product (in Mega Gauss Oersted, or MGOe). For example, grade N42 has a Max Energy Product of 42 MGOe.
Magnets with a bigger Maximum Energy Product will have greater strength. Specifically, the shape of the BH Curve indicates both how strong a magnet is and how strong of a magnetic field you would need to demagnetize the magnet.
Appendix: What is a BH Curve? (WARNING: Technical Content Follows)
A BH Curve describes the magnetic properties of the magnetic material. Let’s examine one step by step.
Consider a neodymium magnet sitting inside a magnetizer. The magnetizer is essentially a coil of wire wrapped around the magnet, through which we will apply a very strong current to create a magnetic field.
In the graph , the horizontal axis shows the strength of the Applied magnetic field (H) – the one we get by running current through the wire. The vertical axis shows the Induced field (B), which the permanent magnet creates by itself. around the magnet, through which we will apply a very strong current to create a magnetic field.
The magnet we will start with has just been manufactured, but not yet magnetized. The magnetic field it creates is zero (B). There is no current running through the wire, so the applied field (H) is also zero. Let’s represent this point with a dot at the zero location on the graph.
Now, let’s briefly run a terrifically strong current through the wire, placing the magnet in a uniform magnetic field. Keep increasing the current, and the applied field increases. If we measure the magnetic field, we also see an induced magnetic field, made from the magnet.
The increases level off. We still have a current running through the wire producing an Applied field, plus an Induced field from the magnet.
Now, let’s turn the current off. The Applied field (H) drops to zero, but there remains a magnetic field produced by the magnet. This point is also called Br, Br max, the Residual Induction or the Residual Flux Density.
In our Glossary, we define Br as, “the magnetic induction remaining in a saturated magnetic material after the magnetizing field has been removed.”
If we apply a current in the opposite direction, the magnetic field created by the current in the coil of wire opposes the field from the magnet -- it is in the opposite direction.
By applying progressively more current in this direction, we can find the shape of the normal curve in the second quadrant (the upper left hand quarter) of the BH Curve graph. Where the Induced field reaches zero, at point #4, is called the Coercive force, Hc. This is the magnet’s Coercivity: the measure of the magnet’s resistance to demagnetization by an external magnetic field.
The farther left on the graph this point is located, the stronger the magnetic field you need to demagnetize the magnet. Not only are neodymium magnets strong, but they have the highest coercivity values of all permanent magnet types.
The whole shape of this graph is the hysteresis curve, and defines how a particular magnet material behaves. It is a property of the magnet material.
When considering the performance of an already magnetized magnet in an application, we only need to look at the 2nd quadrant to see how it will behave.
As an professional neodymium magnet manufacturer, we will provide the reasonable Ndfeb Magnet for sale, Welcome to consult.https://www.zhijiangmagnet.com
Where do these N numbers come from?
The performance of a magnet material is defined by that material’s hysteresis curve, also known as a Demagnetization Curve or BH Curve. The Maximum Energy Product is the point on this curve where the B value multiplied by the H value is at its maximum.
At a point on the curve, multiply the "B" value (in kilo Gauss) by the "H" value (in kilo Oersted) to get the Maximum Energy Product (in Mega Gauss Oersted, or MGOe). For example, grade N42 has a Max Energy Product of 42 MGOe.
Magnets with a bigger Maximum Energy Product will have greater strength. Specifically, the shape of the BH Curve indicates both how strong a magnet is and how strong of a magnetic field you would need to demagnetize the magnet.
Appendix: What is a BH Curve? (WARNING: Technical Content Follows)
A BH Curve describes the magnetic properties of the magnetic material. Let’s examine one step by step.
Consider a neodymium magnet sitting inside a magnetizer. The magnetizer is essentially a coil of wire wrapped around the magnet, through which we will apply a very strong current to create a magnetic field.
In the graph , the horizontal axis shows the strength of the Applied magnetic field (H) – the one we get by running current through the wire. The vertical axis shows the Induced field (B), which the permanent magnet creates by itself. around the magnet, through which we will apply a very strong current to create a magnetic field.
The magnet we will start with has just been manufactured, but not yet magnetized. The magnetic field it creates is zero (B). There is no current running through the wire, so the applied field (H) is also zero. Let’s represent this point with a dot at the zero location on the graph.
Now, let’s briefly run a terrifically strong current through the wire, placing the magnet in a uniform magnetic field. Keep increasing the current, and the applied field increases. If we measure the magnetic field, we also see an induced magnetic field, made from the magnet.
The increases level off. We still have a current running through the wire producing an Applied field, plus an Induced field from the magnet.
Now, let’s turn the current off. The Applied field (H) drops to zero, but there remains a magnetic field produced by the magnet. This point is also called Br, Br max, the Residual Induction or the Residual Flux Density.
In our Glossary, we define Br as, “the magnetic induction remaining in a saturated magnetic material after the magnetizing field has been removed.”
If we apply a current in the opposite direction, the magnetic field created by the current in the coil of wire opposes the field from the magnet -- it is in the opposite direction.
By applying progressively more current in this direction, we can find the shape of the normal curve in the second quadrant (the upper left hand quarter) of the BH Curve graph. Where the Induced field reaches zero, at point #4, is called the Coercive force, Hc. This is the magnet’s Coercivity: the measure of the magnet’s resistance to demagnetization by an external magnetic field.
The farther left on the graph this point is located, the stronger the magnetic field you need to demagnetize the magnet. Not only are neodymium magnets strong, but they have the highest coercivity values of all permanent magnet types.
The whole shape of this graph is the hysteresis curve, and defines how a particular magnet material behaves. It is a property of the magnet material.
When considering the performance of an already magnetized magnet in an application, we only need to look at the 2nd quadrant to see how it will behave.
As an professional neodymium magnet manufacturer, we will provide the reasonable Ndfeb Magnet for sale, Welcome to consult.https://www.zhijiangmagnet.com
The Different Period Of SmCo Magnet
2021年4月26日 Electromagnetism SmCo Magnets are the type of magnets where magnetic field is produced using the flow of electric current. Until 18th century, the only magnetism known was that of ferrite magnets and of "lodestones", natural magnets of iron-rich ore. The researches undertaken during the period revealed that there was some sort of relation between electricity and magnetism. Scientist knew that lightening could affect the magnetic property of the compass. They discovered that steel, when struck by lightening, could be magnetized and electrostatically charged objects possessed magnetic properties. However, the laws that governed the relationship between electricity and magnetism were still unknown. Scientists were aware of the fact that once the relationship was established, it would open a gateway for series of invention that would revolutionize the world of technology.
Hans Christian Oersted - Electromagnetism Experiment
In 1820, Hans Christian Oersted, a Danish physicist and chemist, was conducting an electrical experiment in which he placed a current-carrying wire over a compass. The needle flipped perpendicularly to the compass. As the direction of flow of current was reversed, the needle jerked around 180 degrees. He came to a conclusion that relation between magnetism and electricity was not analogous, but closely related. This experiment gave birth to the concept of electromagnetism. The study caused much excitement within the scientist community and there was a flurry of experimental activities in the field of electromagnetic engineering.
Andre Marie Ampere’s & Electromagnetism
The French scientist, Andre Marie Ampere felt that if a wire carrying electricity exerted a magnetic force on the needle, two such wires should behave as an independent magnets. Through a series of experiment, he demonstrated that the interaction between these wires was simple and fundamental - parallel (straight) currents attract, anti-parallel currents repel. The force between parallel straight currents was inversely proportional to the distance between them, and proportional to the intensity of the current flowing in each wire.
Thus it was inferred that two different kinds of forces were associated with electricity - electric and magnetic. James Clerk Maxwell further established the relationship between two types of forces. The experiment unexpectedly involved the velocity of the light. This time it was concluded that light was an electric phenomenon. The connection formed the base for the discovery of radio waves, the theory of relativity and a great deal of present-day physics.
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Hans Christian Oersted - Electromagnetism Experiment
In 1820, Hans Christian Oersted, a Danish physicist and chemist, was conducting an electrical experiment in which he placed a current-carrying wire over a compass. The needle flipped perpendicularly to the compass. As the direction of flow of current was reversed, the needle jerked around 180 degrees. He came to a conclusion that relation between magnetism and electricity was not analogous, but closely related. This experiment gave birth to the concept of electromagnetism. The study caused much excitement within the scientist community and there was a flurry of experimental activities in the field of electromagnetic engineering.
Andre Marie Ampere’s & Electromagnetism
The French scientist, Andre Marie Ampere felt that if a wire carrying electricity exerted a magnetic force on the needle, two such wires should behave as an independent magnets. Through a series of experiment, he demonstrated that the interaction between these wires was simple and fundamental - parallel (straight) currents attract, anti-parallel currents repel. The force between parallel straight currents was inversely proportional to the distance between them, and proportional to the intensity of the current flowing in each wire.
Thus it was inferred that two different kinds of forces were associated with electricity - electric and magnetic. James Clerk Maxwell further established the relationship between two types of forces. The experiment unexpectedly involved the velocity of the light. This time it was concluded that light was an electric phenomenon. The connection formed the base for the discovery of radio waves, the theory of relativity and a great deal of present-day physics.
Do not hesitate to contact us,as an professional Alnico Ring Magnets manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
Neodymium magnet, also called NdFeB magnet, is a tetragonal crystal formed by neodymium, iron, and boron (Nd2Fe14B). This kind of Neodymium Disc Magnet factory is the most commonly used rare earth magnet and is widely used in electronic products, such as hard drives, mobile phones, earphones, and battery-powered tools. N35 and N52 magnets are two common grades of neodymium magnets. But many people don’t know what is the difference between N35 and N52 magnets. So in this article, we try to make a comparison between them.
The two magnets have the same intrinsic coercivity Hcj level, which is higher than 12kOe (in CGS units) or 955kA/m (in SI units). Their maximum magnetic energy product (BH) max is about 35 and 52 MGOe, respectively. This huge difference means that N52 magnets have about 49% more energy than N35 magnets. In other words, the performance of a motor or device using N52 magnets will be much higher than that of a motor or device using N35 magnets, and it will be smaller and lighter.
Although the N52 magnet has a very high (BH)max at room temperature, which is currently the highest level among commercial magnets, its application is limited to a certain extent due to its high cost (about 50% higher than N35 magnets). In fact, among sintered NdFeB magnets, N35 magnets are the most widely used in various applications. Compared with other permanent magnets, such as ceramic/ferrite magnets, which have a maximum BH of about 4MGOe, N35 magnets are nearly 8 to 9 times powerful than them.
In some cases, neodymium-iron-boron magnets with higher (BH) max are really needed, but magnets of N45, N48, and N50 are already strong enough. By structural design and optimization, these lower-grade magnets can replace the N52 magnet, which can meet the target performance at a relatively lower cost.
Conclusion
Now you may have a better understanding of the difference between N35 and N52 magnets.
Do not hesitate to contact us,as an professional Sm2Co17 Magnet manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
The two magnets have the same intrinsic coercivity Hcj level, which is higher than 12kOe (in CGS units) or 955kA/m (in SI units). Their maximum magnetic energy product (BH) max is about 35 and 52 MGOe, respectively. This huge difference means that N52 magnets have about 49% more energy than N35 magnets. In other words, the performance of a motor or device using N52 magnets will be much higher than that of a motor or device using N35 magnets, and it will be smaller and lighter.
Although the N52 magnet has a very high (BH)max at room temperature, which is currently the highest level among commercial magnets, its application is limited to a certain extent due to its high cost (about 50% higher than N35 magnets). In fact, among sintered NdFeB magnets, N35 magnets are the most widely used in various applications. Compared with other permanent magnets, such as ceramic/ferrite magnets, which have a maximum BH of about 4MGOe, N35 magnets are nearly 8 to 9 times powerful than them.
In some cases, neodymium-iron-boron magnets with higher (BH) max are really needed, but magnets of N45, N48, and N50 are already strong enough. By structural design and optimization, these lower-grade magnets can replace the N52 magnet, which can meet the target performance at a relatively lower cost.
Conclusion
Now you may have a better understanding of the difference between N35 and N52 magnets.
Do not hesitate to contact us,as an professional Sm2Co17 Magnet manufacturer, We will offer the best service for every customer.https://www.zhijiangmagnet.com
What Makes Smco Magnets Special?
2021年3月29日 The current utilization rate
Electric automobiles make up the biggest part of industrial applications for permanent magnets. When one speaks about permanent magnets in electric vehicles, one should picture a very strong magnet based on NdFeB or SmCo alloy. Their strength allows for the miniaturization of electronic devices as we know today. But it is important to underline that 95-98% of magnets in electric car industry are nowadays associated with Nd, rather than SmCo magnets. The situation is changing, and in fact, SmCo Magnets are becoming the preferred choice for some high-tech applications. Why?
What makes them special
Is there any application where SmCo, which is much more expensive, performs better than NdFeB? NdFeB magnet is the strongest magnet in the world. Although magnetic properties of NdFeB magnet are stronger, SmCo is still the second strongest, and SmCo possess even other properties which make it unique. To produce a SmCo permanent magnet, it is not Fe which produces the magnetic force, but ferromagnetic Co. Magnetized cobalt retains its magnetic properties even at temperatures up to 1,121 °C (Curie Point), which is higher than any other metal. This means that to demagnetize SmCo magnet you need to provide much more heat than in case of NdFeB. And that’s not all! SmCo magnets have higher resistance to demagnetization (coercivity), but they are also less reactive and less corrosive, so they don’t necessarily require a coating. A coating or plating protects the material and is required only when working in acidic, humid or vacuum environment. Based on the above reasons, one could deduce that SmCo magnets are excellent at high temperature applications, where NdFeB magnets are not stable enough. SmCo can resist both, high and cryogenic temperatures, including fast temperature changes, without losing its magnetic properties. The maximal operating temperature depends on the magnetic characteristics, as well as on the geometry of the system (the magnet and the circuit). The normal operating temperature range is from -300 °C to +550 °C. It is partially a matter of price, but there are indeed applications in which a high temperature stability of the magnet is needed, therefore SmCo magnets could gain traction in the automotive industry, spectroscopy, magnetic sensors, and other airspace and military applications.
SmCo alloys
To support the variety of industrial applications, different grades of SmCo magnets are available on the market. The term “grade”, in this case, is used just to find the balance between optimal cost, performance, and operational temperature resistance. It shouldn’t be confused with the kind of alloy. There are only two alloys which are important for permanent magnets, SmCo5 and Sm2Co17. The older version invented in 1970s is SmCo5, it has one Sm atom per five Co atoms. The more recent Sm2Co17 alloy has a higher energy density and a higher temperature operating point, which expands upon SmCo’s already vast range of applications. Sm2Co17 alloy may contain a mixture of Fe, Cu, Zr or Ti, which have an influence on the microstructure, magnetization, and coercivity of the magnet. Depending on the application, magnets are produced in various shapes like disc, cylinder, rectangular, ring or irregular shape .
What’s behind the price
Forty years ago, , because the use of SmCo magnets was much higher. Today it’s just around 2-5% of permanent magnets in circulation. This is because SmCo was widely replaced by NdFeB magnets. Anyway, this is not the reason why SmCo magnets are not as widespread as before, but are designed rather for niche applications. The major component of SmCo magnets is cobalt, which represents 45-80% of the metal mass. In the 1980s, there was a large demand for Ni/Co rechargeable batteries and cobalt became quickly a critical metal due to its economic importance. SmCo magnets are now because of cobalt (the actual price for cobalt as on 9 January 2017 is 31,148.60 EUR/t). Alnico Ring Magnets are expected to be used more and more, especially as technology develops.https://www.zhijiangmagnet.com
Electric automobiles make up the biggest part of industrial applications for permanent magnets. When one speaks about permanent magnets in electric vehicles, one should picture a very strong magnet based on NdFeB or SmCo alloy. Their strength allows for the miniaturization of electronic devices as we know today. But it is important to underline that 95-98% of magnets in electric car industry are nowadays associated with Nd, rather than SmCo magnets. The situation is changing, and in fact, SmCo Magnets are becoming the preferred choice for some high-tech applications. Why?
What makes them special
Is there any application where SmCo, which is much more expensive, performs better than NdFeB? NdFeB magnet is the strongest magnet in the world. Although magnetic properties of NdFeB magnet are stronger, SmCo is still the second strongest, and SmCo possess even other properties which make it unique. To produce a SmCo permanent magnet, it is not Fe which produces the magnetic force, but ferromagnetic Co. Magnetized cobalt retains its magnetic properties even at temperatures up to 1,121 °C (Curie Point), which is higher than any other metal. This means that to demagnetize SmCo magnet you need to provide much more heat than in case of NdFeB. And that’s not all! SmCo magnets have higher resistance to demagnetization (coercivity), but they are also less reactive and less corrosive, so they don’t necessarily require a coating. A coating or plating protects the material and is required only when working in acidic, humid or vacuum environment. Based on the above reasons, one could deduce that SmCo magnets are excellent at high temperature applications, where NdFeB magnets are not stable enough. SmCo can resist both, high and cryogenic temperatures, including fast temperature changes, without losing its magnetic properties. The maximal operating temperature depends on the magnetic characteristics, as well as on the geometry of the system (the magnet and the circuit). The normal operating temperature range is from -300 °C to +550 °C. It is partially a matter of price, but there are indeed applications in which a high temperature stability of the magnet is needed, therefore SmCo magnets could gain traction in the automotive industry, spectroscopy, magnetic sensors, and other airspace and military applications.
SmCo alloys
To support the variety of industrial applications, different grades of SmCo magnets are available on the market. The term “grade”, in this case, is used just to find the balance between optimal cost, performance, and operational temperature resistance. It shouldn’t be confused with the kind of alloy. There are only two alloys which are important for permanent magnets, SmCo5 and Sm2Co17. The older version invented in 1970s is SmCo5, it has one Sm atom per five Co atoms. The more recent Sm2Co17 alloy has a higher energy density and a higher temperature operating point, which expands upon SmCo’s already vast range of applications. Sm2Co17 alloy may contain a mixture of Fe, Cu, Zr or Ti, which have an influence on the microstructure, magnetization, and coercivity of the magnet. Depending on the application, magnets are produced in various shapes like disc, cylinder, rectangular, ring or irregular shape .
What’s behind the price
Forty years ago, , because the use of SmCo magnets was much higher. Today it’s just around 2-5% of permanent magnets in circulation. This is because SmCo was widely replaced by NdFeB magnets. Anyway, this is not the reason why SmCo magnets are not as widespread as before, but are designed rather for niche applications. The major component of SmCo magnets is cobalt, which represents 45-80% of the metal mass. In the 1980s, there was a large demand for Ni/Co rechargeable batteries and cobalt became quickly a critical metal due to its economic importance. SmCo magnets are now because of cobalt (the actual price for cobalt as on 9 January 2017 is 31,148.60 EUR/t). Alnico Ring Magnets are expected to be used more and more, especially as technology develops.https://www.zhijiangmagnet.com
The Application Of SmCo Magnet
2021年3月22日 Neodymium-iron-boron (NdFeB)
Alloy made of neodymium, iron, boron with the compound Nd2Fe14B.
NdFeB magnets are hard, but not brittle and oxidise heavily. That is why they are mostly nickel-or zinc-plated. NdFeB magnets indicate a very high energy density so that a very high adhesive forces can be achieved at max. saturation. They can be used in a temperature range of -40°C to + 200°C*.
Samarium-Cobalt (SmCo)
Alloy consisting of the rare earth metal samarium (Sm) with the metal cobalt (Co).
Alloy structures
SmCo5 (without iron content)
Sm2Co17 Magnet(with 20–25 % iron content)
These magnets are hard and brittle and can only be machined using diamond tools. They are expensive due to the high cobalt content. SmCo magnets oxidise only slightly and demonstrate good chemical resistance. Due to their high energy density (about 30-40% less than NdFeB magnets), high adhesive forces can be achieved at maximum saturation. They can be used in a temperature range of -40°C to +350°C*. Small cracks in the magnetic material do not influence the force.
AlNiCo
Alloys consisting of aluminum, iron, nickel, copper and cobalt. Permanent magnets are made from them using casting methods and technology or sintering.
Due to their magnetic properties, magnets made of AlNiCo have to be very long in the direction of magnetisation in order to have, as open magnets, good demagnetisation resistance. Neodymium Disc Magnets are highly temperature-resistant and can be used in the temperature range -270°C to + 450°C*.
Hard magnetic ferrites (HF)
are made out of iron oxide and strontium carbonate.
Strontium-ferrite compound: SrFe12O19
In contrast to the rare earth magnets, ferrites demonstrate a considerably lower magnetic energy density. These raw materials are available in large quantities and are therefore inexpensive.
Chipping on the sharp edges are accepted, provided that the original shape of the magnet and its function are maintained. In cases where no chipping is accepted, it must be explicitly specified. Small cracks in the magnetic material do not influence the force.
Magnets made of hard ferrites can be isotropic (elements uniform in all directions ->lower adhesive force) or anisotropic (elemental components have a preferred direction -> higher adhesive force). HF magnets can be used in a temperature range of -40°C to + 250°C*.
The material is hard and brittle and can only be machined using diamond tools. Furthermore, hard ferrites are not sensitive to oxidation and weather conditions; they also show good chemical resistance.
The maximum service temperature varies however, and depends entirely on the actual alloys, the application, the bonded materials, as well as the geometry of the magnet. You are also welcome to contact us in person.https://www.zhijiangmagnet.com
Alloy made of neodymium, iron, boron with the compound Nd2Fe14B.
NdFeB magnets are hard, but not brittle and oxidise heavily. That is why they are mostly nickel-or zinc-plated. NdFeB magnets indicate a very high energy density so that a very high adhesive forces can be achieved at max. saturation. They can be used in a temperature range of -40°C to + 200°C*.
Samarium-Cobalt (SmCo)
Alloy consisting of the rare earth metal samarium (Sm) with the metal cobalt (Co).
Alloy structures
SmCo5 (without iron content)
Sm2Co17 Magnet(with 20–25 % iron content)
These magnets are hard and brittle and can only be machined using diamond tools. They are expensive due to the high cobalt content. SmCo magnets oxidise only slightly and demonstrate good chemical resistance. Due to their high energy density (about 30-40% less than NdFeB magnets), high adhesive forces can be achieved at maximum saturation. They can be used in a temperature range of -40°C to +350°C*. Small cracks in the magnetic material do not influence the force.
AlNiCo
Alloys consisting of aluminum, iron, nickel, copper and cobalt. Permanent magnets are made from them using casting methods and technology or sintering.
Due to their magnetic properties, magnets made of AlNiCo have to be very long in the direction of magnetisation in order to have, as open magnets, good demagnetisation resistance. Neodymium Disc Magnets are highly temperature-resistant and can be used in the temperature range -270°C to + 450°C*.
Hard magnetic ferrites (HF)
are made out of iron oxide and strontium carbonate.
Strontium-ferrite compound: SrFe12O19
In contrast to the rare earth magnets, ferrites demonstrate a considerably lower magnetic energy density. These raw materials are available in large quantities and are therefore inexpensive.
Chipping on the sharp edges are accepted, provided that the original shape of the magnet and its function are maintained. In cases where no chipping is accepted, it must be explicitly specified. Small cracks in the magnetic material do not influence the force.
Magnets made of hard ferrites can be isotropic (elements uniform in all directions ->lower adhesive force) or anisotropic (elemental components have a preferred direction -> higher adhesive force). HF magnets can be used in a temperature range of -40°C to + 250°C*.
The material is hard and brittle and can only be machined using diamond tools. Furthermore, hard ferrites are not sensitive to oxidation and weather conditions; they also show good chemical resistance.
The maximum service temperature varies however, and depends entirely on the actual alloys, the application, the bonded materials, as well as the geometry of the magnet. You are also welcome to contact us in person.https://www.zhijiangmagnet.com
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