发明申请
- 专利标题： Formed product and method for production thereof
- 专利标题（中）： 成型产品及其生产方法
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申请号： US10531386申请日： 2003-10-17
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公开(公告)号： US20050271496A1公开(公告)日： 2005-12-08
- 发明人: Shiro Torizuka , Kotobu Nagai , Eijiro Muramatsu , Yoshiyuki Suzuki
- 申请人： Shiro Torizuka , Kotobu Nagai , Eijiro Muramatsu , Yoshiyuki Suzuki
- 申请人地址： JP Tsukuba-shi
- 专利权人： NATIONAL INSTITUTE FOR MATERIALS SCIENCE
- 当前专利权人： NATIONAL INSTITUTE FOR MATERIALS SCIENCE
- 当前专利权人地址： JP Tsukuba-shi
- 优先权： JP2002-303660 20021017
- 国际申请： PCT/JP03/13309 WO 20031017
- 主分类号： B21J1/04
- IPC分类号： B21J1/04 ; B21K1/46 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; F16B35/00 ; F16B35/04
摘要：
A formed product, characterized in that it is produced by using, as a material, a steel having an ultra fine structure comprising ferrite grains having an average grain diameter of 3 μm or less and by a method comprising only a forming step and including none of refining steps; and a method for producting the above formed product with ease. The formed product contains no alloying element and has been subjected to no refining step, and has been imparted with high strength and high toughness by the above ultra fine structure.