发明申请
- 专利标题: CASE-INTEGRATED BONDED MAGNET AND PRODUCTION METHOD FOR SAME
- 专利标题(中): 一体化粘结磁体及其生产方法
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申请号: US13639723申请日: 2011-04-05
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公开(公告)号: US20130069747A1公开(公告)日: 2013-03-21
- 发明人: Yoshinobu Honkura , Hironari Mitarai , Hiroshi Matsuoka , Masayuki Kato , Ikuzou Okumura
- 申请人: Yoshinobu Honkura , Hironari Mitarai , Hiroshi Matsuoka , Masayuki Kato , Ikuzou Okumura
- 申请人地址: JP Aichi
- 专利权人: Aichi Steel Corporation
- 当前专利权人: Aichi Steel Corporation
- 当前专利权人地址: JP Aichi
- 优先权: JP2010-086944 20100405
- 国际申请: PCT/JP2011/058644 WO 20110405
- 主分类号: B29C43/00
- IPC分类号: B29C43/00 ; H01F1/01
摘要:
A production method for a case-integrated bonded magnet includes: filling a tubular cavity with a magnet raw material that includes a rare-earth magnet powder and a thermosetting resin binder; heating the magnet raw material to cause the thermosetting resin softened or melted while compressively molding the magnet raw material to obtain a tubular compact; discharging the tubular compact from the tubular cavity while press-fitting the tubular compact into a metal tubular case having an inner peripheral surface coaxial with the tubular cavity; and heat-curing the tubular compact with the tubular case to cure the thermosetting resin. The tubular compact press-fitted into the tubular case is thermally cured thereby causing the tubular compact to transform to a tubular bonded magnet, which expands unexpectedly due to heat.