发明授权
- 专利标题： Manufacturing process for high temperature carburized case harden steel
- 专利标题（中）： 高温渗碳箱硬化钢的制造工艺
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申请号： US751465申请日： 1985-07-03
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公开(公告)号： US4773947A公开(公告)日： 1988-09-27
- 发明人: Kimihiro Shibata , Masahide Ike , Kenji Isokawa , Katsunori Takada
- 申请人： Kimihiro Shibata , Masahide Ike , Kenji Isokawa , Katsunori Takada
- 申请人地址： JPX both of JPX both of
- 专利权人： Nissan Motor Co., Ltd.,Daido Tokushuko Kabushiki Kaisha
- 当前专利权人： Nissan Motor Co., Ltd.,Daido Tokushuko Kabushiki Kaisha
- 当前专利权人地址： JPX both of JPX both of
- 优先权： JPX58-140528 19830802
- 主分类号： C22C38/00
- IPC分类号： C22C38/00 ; C22C38/02 ; C22C38/12 ; C21D9/00
摘要：
A case hardening steel which consists essentially of 0.03-0.2 wt % of C, 1.0-3.0 wt % of Si, 0.2-2.0 wt % of Mn, 0.05-0.5 wt % of V and the balance of Fe. The primary advantage of this steel is fineness of grain size after carburizing at relatively high temperatures. Even when carburizeed at or above 950.degree. C., the grain size number is not smaller than 6 in both the hardened case and the core. Optionally the steel may contain up to 2.0 wt % of Ni, up to 2.0 wt % of Cr and/or up to 0.5 wt % of Mo for the reinforcing purpose, and/or up to 0.1 wt % of Al, up to 0.3 wt % of Ti, up to 0.1 wt % of Zr, up to 0.03 wt % of N and/or up to 0.5 wt % of Nb+Ta for the purpose of depressing the grain growth.
公开/授权文献
- US5781922A Page boundary caches 公开/授权日：1998-07-14
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