The Permanent Magnet Components have a wide magnetic stagnation line, high correction force, and high remaining magnetic. Once it is magnetized, it can maintain constant magnetic materials. Also known as hard magnetic material. In practicality, permanent magnetic materials work in the second quadrant degraded part of the second quadrant of the stagnation line after deep magnetic saturation and magnetic stagnation line. Common permanent magnet materials are divided into aluminum nickel cobalt system permanent magnet alloy, iron chromium cobalt system permanent magnet alloy, permanent magnet oxygen, rare earth permanent magnet material, and composite permanent magnet material.
The first category is: alloy permanent magnet material, including rare earth permanent magnet materials (iron boron ND2FE14B), cobalt (SMCO), aluminum nickel cobalt (Alnico)
The second category is: Ferrite (Ferrite)
According to different production processes, it is divided into sintering iron oxygen, bonding iron oxygen, and injection of iron oxygen. These three processes are divided into equal and heterogeneous magnets based on the orientation of magnetic crystals.
The permanent magnet material includes iron oxygen permanent magnets, rare earth permanent magnets (rare earth cobalt, cymbal iron boron, etc.), aluminum nickel cobalt, iron chromium cobalt, aluminum iron, and other materials. Among them is Tie iron boron rare earth permanent magnet.
In the permanent magnet material, the permanent magnetic material of the iron oxygen is low in comprehensive magnetic performance but compared with the metal permanent magnet, the resistivity is high, the stability is good, the environment is strong, and the source of raw materials is rich, the performance price is relatively high, the process is mature, the process is mature There is no problem of oxidation, so in many applications of permanent magnet materials, it is still the most ideal preferred permanent magnet material. Since the production of iron oxygen permanent magnets in the 1950s, its development momentum is very rapid. The current output value is about 1.5 times that of rare earth permanent magnets. It is expected that in the future, it will still be the most widely used and the largest demand permanently. Magnetic material.
At the same time, iron oxygen permanent magnets and their application products are also typical energy saving, materials saving, foreign exchange, and export exchange products. From the perspective of resource utilization or from the perspective of energy and applications, its development prospects are very broad. The development of iron oxygen permanent magnets is of great significance for the development of Chinese economic pillar industries and exports to the national economic pillar industry and exports in accordance with national industrial policies and plans. With the rapid development of electronic information technology, high-performance iron oxygen home and abroad is at home and abroad. The market demand for the permanent magnet of the body. Therefore, it is necessary to study and develop and produce high-performance iron oxygen permanent magnet materials.
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