Views:3 Author:Site Editor Publish Time: 2017-05-19 Origin:Site
Rare earth permanent magnet material is samarium, neodymium with a mixed rare earth transition metal (such as cobalt, iron, etc.) alloy composition, pressure sintering using powder metallurgy method, the magnetic field after magnetizing a magnetic material obtained.
Samarium Cobalt rare earth permanent magnet points (SmCo) permanent magnet and neodymium (NdFeB) permanent magnets, SmCo magnet which magnetic energy accumulated in between 15 ~ 30MGOe, magnetic energy product of NdFeB permanent magnets between 27 ~ 50MGOe, was referred to as "the permanent King", it is the highest permanent magnetic material. Samarium cobalt permanent magnet, although its excellent magnetic properties, but contains reserves of rare earth metal samarium rare and scarce, expensive strategic metal cobalt, therefore, its development has been greatly restricted. Development of China's rare earth permanent magnet industry began in the late 1960s, when the main product is samarium - cobalt magnets, currently samarium - cobalt permanent magnet World sales of 630 tons, the country is 90.5 tons (including SmCo magnetic), mainly used military technology.
With the development of computer, telecommunications and other industries, particularly rare earth permanent magnet NdFeB permanent magnet industry has been rapid development.
Rare earth permanent magnet materials are now known the highest overall performance of a permanent magnet material, magnetic magnets than the nineteenth century can be used more than 100 times higher than the ferrite, aluminum nickel and performance far superior than expensive platinum-cobalt alloy magnetic energy is also twice as high. Since the use of rare earth permanent magnetic materials, permanent magnet devices to not only promote the development of small, improve product performance, and to promote produce some special devices, so rare earth permanent magnet material appeared, immediately aroused great attention of States, extremely rapid development. Development and production of various properties of rare earth permanent magnet material has been close to or reached the international advanced level.
Now rare earth permanent magnet materials have become an important communications electronics materials, used in satellites, radar and other aspects of traveling wave tubes, circulators and micro-motors, micro-recorders, aviation equipment, electronic watches, seismographs and other electronic instrument. Currently rare earth permanent magnet applications have penetrated into the car, household appliances, electronic instruments, magnetic resonance imager, audio equipment, micro motor, mobile phones and so on. In health care, the use of rare earth permanent magnet materials "magnetic point therapy", so efficacy is greatly improved, thus contributing to the "magnetic point therapy," the rapid promotion. In various fields of application of rare earth, rare earth permanent magnet materials are the fastest growing one. It not only to the development of rare earth industry has brought great impetus, also have quite far-reaching impact on many related industries.
First, the definition of magnetic tile: magnetic tile talking about here is a permanent magnet in a permanent magnet motor is mainly used in the tile-shaped magnets.Second, the magnetic tile classification: magnetic tile depending on their raw materials are mainly three categories:1, ferrite magneti
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The ferrite is made of iron oxide and other ingredients. Generally can be divided into permanent ferrite, soft ferrite and rotating ferrite three.Permanent magnet ferrite, also known as ferrite magnet, is what we usually see the black small magnet. Its composition of raw materials are mainly iron ox