发明授权
- 专利标题： Method of manufacturing rare earth-iron bond magnet
- 专利标题（中）： 制造稀土铁磁铁磁铁的方法
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申请号： US10048644申请日： 2000-08-07
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公开(公告)号： US06978533B1公开(公告)日： 2005-12-27
- 发明人: Fumitoshi Yamashita , Yuichiro Sasaki
- 申请人： Fumitoshi Yamashita , Yuichiro Sasaki
- 申请人地址： JP Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： Wenderoth, Lind & Ponack, L.L.P.
- 优先权： JP11-223394 19990806
- 国际申请： PCT/JP00/05273 WO 20000807
- 国际公布： WO01/11636 WO 20010215
- 主分类号： H01F1/08
- IPC分类号： H01F1/08 ; B22F3/00 ; C22C38/00 ; H01F1/057 ; H01F41/02 ; H02K15/00 ; H02K15/14 ; H02K15/16
摘要：
A powder molded magnet manufactured by a method comprising the steps of: (1) forming a granular compound of diameter of not more than 250 μm with a rare earth-iron rapid-quenched flake, which has not more than 150 μm in diameter, being coarsely ground if necessary, and a binder, (2) dry-blending the granular compound with fatty acid metallic soap powder, (3) forming compressed powder from the granular compound dry-blended with the fatty acid metallic soap powder, by powder molding, and (4) heat-treating the compressed powder to a temperature higher than a thermally dissociating temperature of stabilized isocyanate.
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