发明授权
- 专利标题： Free cutting steel
- 专利标题（中）： 自由切割钢
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申请号： US10495902申请日： 2002-11-29
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公开(公告)号： US08124008B2公开(公告)日： 2012-02-28
- 发明人: Toshiyuki Murakami , Tetsuo Shiraga , Kiyohito Ishida , Katsunari Oikawa
- 申请人： Toshiyuki Murakami , Tetsuo Shiraga , Kiyohito Ishida , Katsunari Oikawa
- 申请人地址： JP Tokyo JP Tokyo JP Sendai-shi, Miyagi
- 专利权人： JFE Bars & Shapes Corporation,National Institute of Advanced Industrial Science & Technology,Kiyohito Ishida
- 当前专利权人： JFE Bars & Shapes Corporation,National Institute of Advanced Industrial Science & Technology,Kiyohito Ishida
- 当前专利权人地址： JP Tokyo JP Tokyo JP Sendai-shi, Miyagi
- 代理机构： Holtz Holtz Goodman & Chick PC
- 优先权： JP2001-366695 20011130; JP2002-185494 20020626; JP2002-185495 20020626; JP2002-185496 20020626
- 国际申请： PCT/JP02/12559 WO 20021129
- 国际公布： WO03/046240 WO 20030605
- 主分类号： C22C38/60
- IPC分类号： C22C38/60 ; C22C38/18
摘要：
A low carbon free cutting steel can be obtained by allowing the steel to contain 0.02 to 0.15 mass % of C, 0.05 to 1.8 mass % of Mn, 0.20 to 0.49 mass % of S, more than 0.01 mass % and not more than 0.03 mass % of O, 0.3 to 2.3% of Cr, and the balance consisting of Fe and inevitable impurities, the Cr/S ratio falling within a range of between 2 and 6.
公开/授权文献
- US20040258555A1 Free-cutting steel 公开/授权日：2004-12-23