公开(公告)号：US20110259483A1

公开(公告)日：2011-10-27

申请号：US13141739

申请日：2009-12-21

申请人： Chang-Hoon Lee ,  Jea-Chun Jeon ,  Jong-Sub Lee ,  Ki-Soo Kim

发明人： Chang-Hoon Lee ,  Jea-Chun Jeon ,  Jong-Sub Lee ,  Ki-Soo Kim

IPC分类号： C21D8/02 ,  C22C38/06 ,  C22C38/02 ,  C22C38/04

CPC分类号： C21D1/32 ,  C21D8/02 ,  C21D8/0205 ,  C21D9/46

摘要： A method for manufacturing a fine spheroidized steel sheet having an excellent heat treatment characteristic, the method including: i) manufacturing a high carbon slab that is formed of 0.3 to 1.0 wt % C, 0.1 to 1.2 wt % Mn, 0 to 0.4 wt % Si, 0.01 to 0.1 wt % Al, 0 to 0.01 wt % S, and balance Fe and an inevitably added impurity as residuals; ii) reheating the slab to a temperature of Ar3 transformation point or more; iii) roughing rolling the slab, and manufacturing a thin plate by performing finish rolling in an austenite region; iv) cooling the thin plate at a cooling speed of 50 to 300° C./sec; v) finishing the cooling of the thin plate at a temperature region of 400 to 650° C. and maintaining the temperature; vi) winding the thin plate at a temperature region of 450 to 700° C.; vii) performing cold rolling at a reduction ratio of 30% or more; and viii) spheroidizing annealing the cold rolled thin plate.

摘要翻译： 一种制造具有优异的热处理特性的精细球化钢板的方法，该方法包括：i）制造由0.3-1.0wt％C，0.1-1.2wt％Mn，0-0.4wt％ Si，0.01〜0.1重量％的Al，0〜0.01重量％的S，余量为Fe和不可避免地添加的杂质作为残留物; ii）将板坯加热至Ar3相变点以上的温度; iii）对板坯进行粗轧，并通过在奥氏体区域进行精轧制造薄板; iv）以50〜300℃/秒的冷却速度冷却薄板; v）在400至650℃的温度范围内完成薄板的冷却并保持温度; vi）将薄板卷绕在450-700℃的温度区域; vii）以30％以上的减速比进行冷轧; 和viii）对冷轧薄板进行球化退火。

公开(公告)号：US08440030B2

公开(公告)日：2013-05-14

申请号：US13141739

申请日：2009-12-21

申请人： Chang-Hoon Lee ,  Jea-Chun Jeon ,  Jong-Sub Lee ,  Ki-Soo Kim

发明人： Chang-Hoon Lee ,  Jea-Chun Jeon ,  Jong-Sub Lee ,  Ki-Soo Kim

IPC分类号： C22C38/04 ,  C22C38/06 ,  C21D8/02

CPC分类号： C21D1/32 ,  C21D8/02 ,  C21D8/0205 ,  C21D9/46

摘要： A method for manufacturing a fine spheroidized steel sheet having an excellent heat treatment characteristic, the method including: i) manufacturing a high carbon slab that is formed of 0.3 to 1.0 wt % C, 0.1 to 1.2 wt % Mn, 0 to 0.4 wt % Si, 0.01 to 0.1 wt % Al, 0 to 0.01 wt % S, and balance Fe and an inevitably added impurity as residuals; ii) reheating the slab to a temperature of Ar3 transformation point or more; iii) roughing rolling the slab, and manufacturing a thin plate by performing finish rolling in an austenite region; iv) cooling the thin plate at a cooling speed of 50 to 300° C./sec; v) finishing the cooling of the thin plate at a temperature region of 400 to 650° C. and maintaining the temperature; vi) winding the thin plate at a temperature region of 450 to 700° C.; vii) performing cold rolling at a reduction ratio of 30% or more; and viii) spheroidizing annealing the cold rolled thin plate.

摘要翻译： 一种制造具有优异的热处理特性的精细球化钢板的方法，该方法包括：i）制造由0.3-1.0wt％C，0.1-1.2wt％Mn，0-0.4wt％ Si，0.01〜0.1重量％的Al，0〜0.01重量％的S，余量为Fe和不可避免地添加的杂质作为残留物; ii）将板坯加热至Ar3相变点以上的温度; iii）对板坯进行粗轧，并通过在奥氏体区域进行精轧制造薄板; iv）以50〜300℃/秒的冷却速度冷却薄板; v）在400至650℃的温度范围内完成薄板的冷却并保持温度; vi）将薄板卷绕在450-700℃的温度区域; vii）以30％以上的减速比进行冷轧; 和viii）对冷轧薄板进行球化退火。

公开(公告)号：US08685181B2

公开(公告)日：2014-04-01

申请号：US13471529

申请日：2012-05-15

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

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

IPC分类号： C21D8/02 ,  C22C38/04 ,  C22C38/14 ,  C22C38/32

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]% 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包括以重量％计，C为0.2-0.5％，Mn为0.1-1.2％，Si为小于或等于0.4％，Cr为小于或等于0.5％，Al为0.01 -0.1％，S小于或等于0.012％，当不满足B和N的条件时，Ti小于或等于0.5×48/14×[N]％至0.03％，B为0.0005-0.0080 ％，N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。

公开(公告)号：US20120222786A1

公开(公告)日：2012-09-06

申请号：US13471529

申请日：2012-05-15

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

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

IPC分类号： C21D8/02 ,  C22C38/14 ,  C22C38/02 ,  C22C38/06 ,  C22C38/32 ,  C22C38/04

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] % 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包括以重量％计，C为0.2-0.5％，Mn为0.1-1.2％，Si为小于或等于0.4％，Cr为小于或等于0.5％，Al为0.01 -0.1％，S小于或等于0.012％，当不满足B和N的条件时，Ti小于或等于0.5×48/14×[N]％至0.03％，B为0.0005-0.0080 ％，N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。

公开(公告)号：US20080295923A1

公开(公告)日：2008-12-04

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 ,  Jea-Chun Jeon

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

IPC分类号： C21D8/00 ,  C22C38/04

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％，小于或等于0.012％的S，当满足B（原子％）/ N（原子％）> 1的条件时小于或等于0.5×48/14×[N]％的Ti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为额外不可避免的元素; 碳化物的平均尺寸小于或等于1um; 铁素体的平均粒径小于或等于5μm。