发明申请
US20070248483A1 Method for Molding Powder in Powder Metallurgy and Method for Producing Sintered Parts
审中-公开
粉末冶金粉末的制造方法和烧结部件的制造方法
- 专利标题: Method for Molding Powder in Powder Metallurgy and Method for Producing Sintered Parts
- 专利标题(中): 粉末冶金粉末的制造方法和烧结部件的制造方法
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申请号: US11574611申请日: 2005-08-31
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公开(公告)号: US20070248483A1公开(公告)日: 2007-10-25
- 发明人: Terukazu Tokuoka , Kazuhiro Hirose , Takao Nishioka , Masazumi Hanada , Kouhei Sawada
- 申请人: Terukazu Tokuoka , Kazuhiro Hirose , Takao Nishioka , Masazumi Hanada , Kouhei Sawada
- 申请人地址: JP Osaka-shi 541-0041
- 专利权人: SUMITOMO ELECTRIC INDUSTRIES, LTD.
- 当前专利权人: SUMITOMO ELECTRIC INDUSTRIES, LTD.
- 当前专利权人地址: JP Osaka-shi 541-0041
- 优先权: JP2004-257464 20040903
- 国际申请: PCT/JP05/15874 WO 20050831
- 主分类号: B22F1/00
- IPC分类号: B22F1/00
摘要:
A mixed powder is obtained by adding at least one kind of solid ester wax to an iron-based powder for powder metallurgy use. The mixed powder is molded. The melting point of the ester wax is 100° C. or lower, the quantity of the ester wax added is in the range of 0.02 wt % or more to 0.6 wt % or less, and the temperature of the mold when the molding is performed is set in a range of (the melting point of the ester wax+10° C.) or more to 200° C. or less. The ester wax thereby liquefies on the surface of the mold and bleeds out when the molding is performed. As a result, molded sintered parts with complex shapes, good surface characteristics, and high densities can be easily obtained.