Anisotropic bonded magnet and production process thereof

Abstract

The invention discloses an anisotropic bonded magnet and a production process thereof. An appropriate amount of anisotropic neodymium iron boron lanthanon permanent magnet powder and ferrite magnetic powder is mixed in proportion to form composite magnet powder, mixing pelleting, injection moulding, cooling curing and other processes are carried out on the composite magnet powder, binding agents with proper components and other assistants, and the anisotropic bonded magnet with good magnetic performance, mechanical performance, oxidation resistance and heat resisting performance is manufactured. The defects that the heat performance of an anisotropic neodymium iron boron bonded magnet in the prior art is poor, and the magnetic performance of a ferrite bonded magnet is insufficient are overcome.

Description

technical field [0001] The present invention relates to the field of magnetic materials, and more particularly, to an anisotropic bonded magnet and a production process thereof. Background technique [0002] NdFeB rare earth permanent magnets belong to the third generation of rare earth permanent magnet materials with relatively low raw material cost and excellent magnetic properties. At present, NdFeB rare earth permanent magnet materials have become an indispensable and important material in industrial production and daily life, and have a wide range of applications in computer, communication, instrumentation, home appliances and other industries. [0003] The development of NdFeB rare earth permanent magnets also plays an important role in magnetic therapy and health care. A large number of medical studies have shown that the use of magnetic fields to act on human tissues can regulate the nervous system and blood circulation, and has the effects of analgesia and stasis. ...

AI Technical Summary

Problems solved by technology

[0012] In the present invention, anisotropic NdFeB rare earth permanent magnet powder and ferrite magnetic powder are mixed in proper proportion to form composite magnetic powder, and then mixed with appropriate binder and other auxiliary agents through mixing, granulation, injection molding, and cooling and solidification. and other processes to manufacture anisotropic bonded magnets with good magnetic properties, mechanical properties, oxidation resistance and heat resistance, which overcome the poor thermal properties of NdFeB rare earth bonded magnets in the prior art and the ferrite Defects of Insufficient Magnetic Properties of Bonded Magnets

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