发明授权
- 专利标题： Cold rolled steel sheets having an improved press formability
- 专利标题（中）： 压制成型性提高的冷轧钢板
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申请号： US944679申请日： 1986-12-19
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公开(公告)号： US4775599A公开(公告)日： 1988-10-04
- 发明人: Saiji Matsuoka , Takashi Obara , Kozo Tsunoyama , Shunichi Tsugawa , Shigeru Kobayashi , Toshio Ichida
- 申请人： Saiji Matsuoka , Takashi Obara , Kozo Tsunoyama , Shunichi Tsugawa , Shigeru Kobayashi , Toshio Ichida
- 申请人地址： JPX Kobe
- 专利权人： Kawasaki Steel Corporation
- 当前专利权人： Kawasaki Steel Corporation
- 当前专利权人地址： JPX Kobe
- 优先权： JPX60-296611 19851224; JPX60-296612 19851224; JPX60-296613 19851224; JPX60-296614 19851224; JPX61-177081 19860728; JPX61-177082 19860728; JPX61-177083 19860728
- 主分类号： B21B1/22
- IPC分类号： B21B1/22 ; C21D8/04 ; C21D9/38 ; B21D53/00
摘要：
A cold rolled steel sheet or plated steel sheet having an improved press formability as well as excellent phosphatability, resistance to galling and spot weldability is produced by controlling a surface roughness pattern of the steel sheet so as to satisfy a center-line average surface roughness of 0.3-2.0 .mu.m and a regularity parameter in at least one direction of not more than 0.25 defining the regularity of surface roughness.
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