Method for producing neodymium-iron-boron rare earth permanent magnetic material

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United States of America Patent

PATENT NO 9415445
APP PUB NO 20150243433A1
SERIAL NO

14040710

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Abstract

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A method for producing neodymium-iron-boron rare earth permanent magnetic materials comprises: controlling technological parameters of alloy smelting, coarsely pulverization, milling by jet mill, and compaction; and adding nano-sized micro powder of oxide, in such a manner that a particle size of milling by the jet mill is decreased, and fine powder collected by the powder filter and powder collected by a cyclone collector are mixed. Utilization rate of the materials and performance of magnets are significantly improved. Usage amount of rare earth is significantly saved, especially usage amount of heavy rare earth. Thus, the scarce resources are protected.

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Patent Owner(s)

Patent OwnerAddress
SHENYANG GENERAL MAGNETIC CO LTDSHENYANG LIAONING 110179

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sun, Haotian Liaoning, CN 6 23

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