Device and method for improving coercivity of ring-shaped NdFeB magnet

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United States of America Patent

PATENT NO 12100544
APP PUB NO 20210304960A1
SERIAL NO

17209273

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Abstract

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Some embodiments of the invention belongs to a technical field of NdFeB magnet processing, and mainly relates to a device and method for improving the coercivity of ring-shaped NdFeB magnet. A layer of heavy rare earth coating is sprayed on the inner and outer surfaces of the ring-shaped NdFeB magnet by the device, and then the ring-shaped NdFeB magnet sprayed with the heavy rare-earth coating is subjected to diffusion treatment to improve the coercivity of the ring-shaped NdFeB magnet. The invention uses heavy rare earth slurry as the diffusion source, combined with spraying technology, can quickly and uniformly cover a layer of heavy rare earth coating on the inner and outer surfaces of the ring-shaped NdFeB magnet, and the coercivity of the ring-shaped NdFeB magnet is improved after heat treatment.

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Patent Owner(s)

Patent OwnerAddress
YANTAI SHOUGANG MAGNETIC MATERIALS INCFUSHAN DISTRICT YANTAI CITY 265500

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ding, Kaihong Shandong, CN 31 7
Peng, Zhongjie Shandong, CN 44 17
Wang, Chuanshen Shandong, CN 16 6
Yang, Kunkun Shandong, CN 25 11

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