发明名称 |
Powder compacting apparatus and method of making rare-earth alloy magnetic powder compact |
摘要 |
The present invention provides a powder compacting apparatus including: a die having a through hole forming a cavity; a first punch and a second punch for pressing a rare-earth alloy magnetic powder filled in the cavity; and a magnetic field generator for applying an orientation magnetic field parallel to a pressing direction through the rare-earth alloy magnetic powder in the cavity, wherein at least one of the first and second punches and has a curved pressing surface, and the pressing surface is given a shape such as to suppress the movement of particles of the rare-earth alloy magnetic powder along the pressing surface during the pressing step.
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申请公布号 |
US2002018730(A1) |
申请公布日期 |
2002.02.14 |
申请号 |
US20010818930 |
申请日期 |
2001.03.28 |
申请人 |
OKUYAMA SHUICHI;HARADA TSUTOMU;TAJIRI TAKASHI |
发明人 |
OKUYAMA SHUICHI;HARADA TSUTOMU;TAJIRI TAKASHI |
分类号 |
B22F3/03;B30B15/06;H01F1/057;H01F41/02;(IPC1-7):H01F1/053 |
主分类号 |
B22F3/03 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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