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Sino Magnets Co., Ltd.
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2,Applications of NdFeB magnets
At the advantage of excellent performances, abundant raw material, competitive prices, the NdFeB magnets have been developed swiftly and widely used,
The NdFeB magnets are commonly used in applications such as generators, DC motors, instruments, electronic industry, automobile industry, petroleum chemistry,
NMR imaging equipment, sensors, loudspeakers, magnetic suspension, magnetic transmission, medical care etc.
3,Comparison of magnetic material
Ferrite Magnets: Low and Medium performance, Lowest prices,Anti-corruption,good working temperature.
NeFeB Magnets: Highest performances, medium price, excellent strength, medium working temperature.
NeFeB Magnets: Highest performances, medium price, excellent strength, medium working temperature.
SmCo Magnets: high performances, highest price, fragile, excellent working temperature, anti-corruption.
Alnico Magnets: Low and medium performances, medium price, excellent working temperature,anti-corruption but not good at anti-interfering.
Smco,ferrite and Ndfeb can be made from both sintered and bonded, the differences from sintered and bonded is: The sintered magnets have better performances but not good at molding, oppositely, the bonded magnets have better molding but not good at performances.
Alnico magnets can be cast and sintered, the cast Alnico magnets have better performances but not good at molding, while sintered Alnico magnets are good at molding but not performences.4. What are the main components of Ndfeb magnets?
The main raw material for NdFeB magnets are as follows: Nd 32%,Fe 64%,and B 1%( others are Dy, Tb,Co, Nb, Ga, Al, Cu). The NdFeb permanent magnetic material is based on Nd2Fe14B, the elements of which is similar with the structural formula Nd2Fe14B.But if you completely make magnets according to this formula, the magnetic power will be very low, even no power. Actually, when the content od Nd and B are much more than the formula, we can obtain better magnetic performances.
5, how long can the magnetic power maintain in the magnets?
NdFeB magnets have very powerful coercive force, it will not be demagnetized during the natural environment and normal magnetic field. We suppose that we put our magnets in the proper condition, even you use it for a long time, the performance and magnetic power will not have much loss. In a fact, we usually ignore the influences factors to the performances of magnets.
6,About magnetized orientation.
Magnetized orientation: The anisotropic magnets in the way that it can obtain the best magnetic performances,we call it magnetized orientation.
1. The Isotropic magnets are those have all the same magnetic performances in every direction.
2.The Anisotropic magnets are those have different magnetic performances in every direction; and it has a certain direction to be magnetized, then you can get the best performance of magnets.
The sintered NdFeB magnets are anisotropic magnets, thus we need to confirm with our clients the direction to be magnetized.(Axially or Radial)
