发明申请
- 专利标题： Method for Producing Dust Core Compact and Dust Core Compact
- 专利标题（中）： 粉尘芯紧凑型粉尘芯的生产方法
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申请号： US11663305申请日： 2005-09-16
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公开(公告)号： US20080102302A1公开(公告)日： 2008-05-01
- 发明人: Kazuhiro Hirose , Haruhisa Toyoda , Atsushi Sato , Takao Nishioka , Yasuhiro Endo , Ryoji Mizutani , Kazutaka Tatematsu , Kenji Harada
- 申请人： Kazuhiro Hirose , Haruhisa Toyoda , Atsushi Sato , Takao Nishioka , Yasuhiro Endo , Ryoji Mizutani , Kazutaka Tatematsu , Kenji Harada
- 优先权： JP2004-273522 20040921
- 国际申请： PCT/JP05/17126 WO 20050916
- 主分类号： B22F3/12
- IPC分类号： B22F3/12 ; B22F3/02
摘要：
A method for producing a dust core compact includes the steps of forming a compact component by pressure-forming a soft magnetic powder having an average particle diameter Da under a pressure Pa, and forming a compact by pressure-forming a soft magnetic powder having an average particle diameter Db and the compact component under a pressure Pb. Average particle diameters Da and Db of the soft magnetic powders satisfy relationship Da/Db≧2, and pressures Pa and Pb applied during the pressure-forming satisfy relationship Pa/Pb≦1/2. With this structure, a method for producing a dust core compact exhibiting a high strength and capable of being fabricated even when it has a complex shape, and the dust core compact can be provided.