发明申请
- 专利标题： Steels product reduced in amount of alumina cluster
- 专利标题（中）： 钢产品减少氧化铝簇数量
-
申请号： US10521950申请日： 2003-07-22
-
公开(公告)号： US20060260719A1公开(公告)日： 2006-11-23
- 发明人: Toshiaki Mizoguchi , Yoshiyuki Ueshima , Jun Yamaguchi , Yu Watanabe , Akira Mikasa , Hirotsugu Yasui
- 申请人： Toshiaki Mizoguchi , Yoshiyuki Ueshima , Jun Yamaguchi , Yu Watanabe , Akira Mikasa , Hirotsugu Yasui
- 优先权： JP2002-214160 20020723; JP2002-214161 20020723; JP2003-1678931 20030612
- 国际申请： PCT/JP03/09274 WO 20030722
- 主分类号： C22C38/00
- IPC分类号： C22C38/00
摘要：
A steel having few alumina clusters prepared by casting liquid steel deoxidized with Al, with the addition of one or more rare-earth metals (REM) selected from the group of Ce, La, Pr and Nd in which: (a) The REM-oxide-content in oxide-based inclusions consisting mainly of alumina and REM-oxides is 0.5 to 15 mass % of said oxide-based inclusions, or (b) The mass ratio of total REM to total oxygen (T.O.), REM/T.O., in liquid steel is not less than 0.05 and not more than 0.5, in addition to (a), or (c) The total REM-content is not less than 0.1 ppm and less than 10 ppm and the dissolved-REM-content is less than 1 ppm.
公开/授权文献
- US07776162B2 Steels with few alumina clusters 公开/授权日：2010-08-17