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PRODUCTION METHOD OF RARE EARTH SINTERED MAGNET AND PRODUCTION DEVICE USED IN THE PRODUCTION METHOD 发明申请

2023-08-10 3240 645K 0

专利信息

申请日期 2025-08-15 申请号 US14893707
公开(公告)号 US20160293306A1 公开(公告)日 2016-10-06
公开国别 US 申请人省市代码 全国
申请人 NDFEB CORPORATION
简介 There is provided a production method and a production device for producing each of the rare earth sintered magnet sintered bodies without carrying a mold in a sintering furnace. The method includes feeding an alloy powder into a mold having side walls divided into two or more sections; filling the alloy powder into the mold to prepare a filled molded-body; orienting the alloy powder in the filled molded-body by applying a magnetic field to the filled molded-body to prepare an oriented filled-molded-body; detaching the side walls of the mold from the oriented filled-molded-body and retrieving the oriented filled-molded-body from the mold; and sintering the retrieved oriented filled-molded-body. The filling step and the orienting step are performed at different locations. A pulsed magnetic field can be applied in the orienting step and inside of the mold can be partitioned into a plurality of cavities by partitions.


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