发明公开
EP0646937A1 Method for producing a permanent magnet and an apparatus for producing a green compact
失效
Verfahren zur Dauermagnet-Herstellung und Apparat zur Formierung einesgrünenKompakts。
- 专利标题： Method for producing a permanent magnet and an apparatus for producing a green compact
- 专利标题（中）： Verfahren zur Dauermagnet-Herstellung und Apparat zur Formierung einesgrünenKompakts。
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申请号： EP94116105.1申请日： 1991-11-28
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公开(公告)号： EP0646937A1公开(公告)日： 1995-04-05
- 发明人: Sagawa, Masato , Nagata, Hiroshi, 303 Raygence Ooyagi , Shirai, Hiroo, 303 Mountain Village
- 申请人： INTERMETALLICS CO., LTD.
- 申请人地址： 401, Eriepart II, 22-1 Matsumuro Oiage-cho, Nishikyo-ku Kyoto-shi, Kyoto JP
- 专利权人： INTERMETALLICS CO., LTD.
- 当前专利权人： INTERMETALLICS CO., LTD.
- 当前专利权人地址： 401, Eriepart II, 22-1 Matsumuro Oiage-cho, Nishikyo-ku Kyoto-shi, Kyoto JP
- 代理机构： Kador & Partner
- 优先权： JP330048/90 19901130; JP40861/91 19910214; JP169346/91 19910614; JP59487/91 19910301
- 主分类号： H01F41/02
- IPC分类号： H01F41/02 ; B22F3/02 ; B30B11/00 ; B22F3/00 ; B30B11/02 ; B30B15/02
摘要：
In the die-pressing method of the magnet powder and fine powder, the powder is filled at a high density in a rubber mold (10), is occasionally preliminarily magnetized (4a) in the rubber mold and is then compacted under magnetic field or without magnetic field. Cracking of the magnet green compact is prevented. A sintered compact having density of 90% or more can be produced using the fine powder.
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