发明公开
EP1561832A1 Method to make sinter-hardened powder metal parts with complex shapes 审中-公开
维尔法赫尔·赫斯特伦·冯·史密斯特

  • 专利标题: Method to make sinter-hardened powder metal parts with complex shapes
  • 专利标题(中): 维尔法赫尔·赫斯特伦·冯·史密斯特
  • 申请号: EP05001266.5
    申请日: 2005-01-21
  • 公开(公告)号: EP1561832A1
    公开(公告)日: 2005-08-10
  • 发明人: Sun, RyanXu, Kai
  • 申请人: BorgWarner Inc.
  • 申请人地址: 3850 Hamlin Road Auburn Hills, MI 48326-2872 US
  • 专利权人: BorgWarner Inc.
  • 当前专利权人: BorgWarner Inc.
  • 当前专利权人地址: 3850 Hamlin Road Auburn Hills, MI 48326-2872 US
  • 代理机构: Petruzziello, Aldo
  • 优先权: US766154 20040128
  • 主分类号: C22C33/02
  • IPC分类号: C22C33/02 F16H55/06
Method to make sinter-hardened powder metal parts with complex shapes
摘要:
A method of producing parts from powdered metals is disclosed, comprising the following steps. A metallurgical powder is provided, consisting of iron, 0.3-1.0 weight percent carbon, 0-4 weight percent chromium, 0-3 weight percent copper, 0.5-1.5 weight percent molybdenum, 0.5-4.5 weight percent nickel, 0-1.0 weight percent manganese, and 0-1.5 weight percent silicon. Metal powders are made by atomization and mixing. The powder metal parts are made by compacting, pre-sintering, profile/form grinding, sinter furnace hardening, and secondary operations. Profile/form grinding generates profiles, which can not be formed by compaction tooling, such as undercut. The specific pre-sinter cycle makes parts strong enough for profile grinding with prolonged tool life. Powder metal parts made by this invention are also disclosed.
信息查询
0/0