POWDER FOR FORMING RARE EARTH MAGNET AND METHOD FOR MANUFACTURING RARE EARTH MAGNET WITHOUT JET PULVERIZATION PROCESS

World Intellectual Property Organization Patent

APP PUB NO WO-2014071873-A1
SERIAL NO

PCTCN2013086806

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Abstract

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Disclosed are a powder for forming a rare earth magnet and a method for manufacturing a rare earth magnet without a jet pulverization process, the method comprising the following steps: 1) sheet casting: casting the molten raw material alloy of the rare earth magnet with a sheet casting process to obtain a quenched alloy having an average thickness of 0.2-0.4 mm; 2) hydrogen decrepitation: maintaining the quenched alloy under a hydrogen pressure of 0.01-1 MPa for 0.5-24 h. The present invention improves the manufacturing process prior to the jet pulverization, and omits the jet pulverization step, thus simplifying the process steps, effectively utilizing precious rare earth resource, and reducing production cost.

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Patent Owner(s)

Patent OwnerAddress
XIAMEN TUNGSTEN CO LTDCNKEJINGSHE HAICANG DISTRICT XIAMEN FUJIAN 361000 361000

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Inventor(s)

Inventor Name Address
WU CHONGHU XIAMEN
NAGATA HIROSHI XIAMEN FUJIAN 361009

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