公开(公告)号：USD422589S

公开(公告)日：2000-04-11

申请号：US105722

申请日：1999-06-01

申请人： Jae Chun Jeon

设计人： Jae Chun Jeon

公开(公告)号：US08197616B2

公开(公告)日：2012-06-12

申请号：US12158961

申请日：2006-12-26

申请人： Kyoo-Young Lee ,  Gyo-Sung Kim ,  Han-Chul Shin ,  Chang-Hoon Lee ,  Kee-Cheol Park ,  Jae-Chun Jeon

发明人： Kyoo-Young Lee ,  Gyo-Sung Kim ,  Han-Chul Shin ,  Chang-Hoon Lee ,  Kee-Cheol Park ,  Jae-Chun Jeon

IPC分类号： C21D8/04 ,  C21D8/02

CPC分类号： C22C38/04 ,  C21D1/32 ,  C21D8/0263 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/004 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/02 ,  C22C38/06 ,  C22C38/32

摘要： A carbon steel sheet having high formability due to a microscopic and uniform carbide distribution and having a good characteristic of final heat treatment, and a manufacturing method thereof. The carbon steel sheet having excellent formability, includes, in wt %, C at 0.2-0.5%, Mn at 0.1-1.2%, Si at less than or equal to 0.4%, Cr at less than or equal to 0.5%, Al at 0.01-0.1%, S at less than or equal to 0.012%, Ti at less than or equal to 0.5×48/14×[N]% when the condition of B(atomic %)/N(atomic %)>1 is satisfied or by 0.5×48/14×[N]% to 0.03% when the condition of B and N is not satisfied, B at 0.0005-0.0080%, N at less than or equal to 0.006%, Fe, and extra inevitable elements; an average size of carbide is less than or equal to 1 μm; and an average grain size of ferrite is less than or equal to 5 μm.

摘要翻译： 由于碳化物分布微观均匀而具有良好的最终热处理特性的高成形性碳钢板及其制造方法。 具有优异成形性的碳钢板以重量％计含有0.2-0.5％的C，0.1-1.2％的Mn，小于或等于0.4％的Si，小于或等于0.5％的Cr，小于或等于0.5％的Cr 0.01-0.1％，S小于或等于0.012％时，B（原子％）/ N（原子％）> 1的条件为小于或等于0.5×48/14×[N] 满足或当不满足B和N的条件时为0.5×48/14×[N]％至0.03％，B为0.0005-0.0080％，N为小于或等于0.006％，Fe和额外的不可避免的元素 ; 碳化物的平均尺寸小于或等于1μm; 铁素体的平均粒径小于或等于5μm。