公开(公告)号：EP1510272B1

公开(公告)日：2010-03-31

申请号：EP04020281.4

申请日：2004-08-26

申请人： JFE Steel Corporation

发明人： Itoyama, Seiji JFE Steel Corporation ,  Fujimura, Toshio JFE Steel Corporation ,  Suzuki, Makoto JFE Steel Corporation ,  Uehara, Hirohide JFE Steel Corporation ,  Matsuzaki, Takeshi JFE Steel Corporation ,  Tada, Chikashi JFE Steel Corporation ,  Miki, Yuji JFE Steel Corporation ,  Yamauchi, Akira JFE Steel Corporation

IPC分类号： B22D11/00 ,  B22D11/115 ,  B22D11/14

CPC分类号： B22D11/14 ,  B22D11/00 ,  B22D11/115

公开(公告)号：EP1510272A1

公开(公告)日：2005-03-02

申请号：EP04020281.4

申请日：2004-08-26

申请人： JFE Steel Corporation

发明人： Itoyama, Seiji JFE Steel Corporation ,  Fujimura, Toshio JFE Steel Corporation ,  Suzuki, Makoto JFE Steel Corporation ,  Uehara, Hirohide JFE Steel Corporation ,  Matsuzaki, Takeshi JFE Steel Corporation ,  Tada, Chikashi JFE Steel Corporation ,  Miki, Yuji JFE Steel Corporation ,  Yamauchi, Akira JFE Steel Corporation

IPC分类号： B22D11/00 ,  B22D11/115 ,  B22D11/14

CPC分类号： B22D11/14 ,  B22D11/00 ,  B22D11/115

摘要： An ultra-low carbon steel slab having a carbon content of about 0.01 mass percent or less is produced by casting at a casting speed of more than about 2.0 m/min using a mold provided with a casting space having a short side length D of about 150 to about 240 mm and an immersion nozzle provided with discharge spouts each having a lateral width d, the ratio D/d being in the range of from about 1.5 to about 3.0. Accordingly, a ultra-low carbon steel slab can be obtained having superior surface quality without performing slab conditioning such as scarfing.

摘要翻译： 碳含量为约0.01质量％以下的超低碳钢板坯，以铸造速度大于约2.0m / min，通过使用具有短边长度D为约 150至约240mm的浸渍喷嘴和设置有各自具有横向宽度d的排出口的浸渍喷嘴，所述比D / d在约1.5至约3.0的范围内。 因此，可以获得具有优异表面质量的超低碳钢板，而不进行诸如烧烤的板坯调节。