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1. 发明申请

WO2010074463A8 HIGH CARBON STEEL SHEET WITH SUPERIOR HEAT TREATMENT CHARACTERISTICS, AND MANUFACTURING METHOD THEREOF 审中-公开
标题翻译：具有超级热处理特性的高碳钢板及其制造方法
公开(公告)号：WO2010074463A8
公开(公告)日：2011-03-24
申请号：PCT/KR2009007625
申请日：2009-12-21
申请人： POSCO , LEE CHANG-HOON , JEON JEA-CHUN , LEE JONG-SUB , KIM KI-SOO
发明人： LEE CHANG-HOON , JEON JEA-CHUN , LEE JONG-SUB , KIM KI-SOO
IPC分类号： C22C38/00 , C21D8/02
CPC分类号： C21D1/32 , C21D8/02 , C21D8/0205 , C21D9/46
摘要： The present invention provides a method for manufacturing a high carbon steel sheet, comprising the steps of i) producing a high carbon slab having a chemical composition comprising, by wt%, C 0.3-1.0%, Mn:0.1-1.2%, Si: more than 0 but less than 0.4%, Al: 0.01-0.1%, S: more than 0 but not more than 0.01%, the remainder being Fe and inevitable impurities ii) reheating the slab to the temperature higher than the Ar3 transformation point, iii) rough-milling the slab, and milling the slab again in an austenite region having a temperature higher than the Ar3 transformation point to produce a steel sheet, iv) cooling the steel sheet on a run-out table by the cooling speed of 50°C/second to 300°C/second, v) finishing the steel sheet cooling process at a temperature of 400-650°C, and maintaining the temperature, vi) winding the steel sheet at a temperature of 450-700°C, vii) omitting a pre-annealing process, and cold-rolling the wound steel sheet by a reduction ratio of 30% or higher; and viii) spheroidizing the cold-rolled steel sheet.
摘要翻译：本发明提供一种高碳钢板的制造方法，其特征在于，包括以下工序：i）制造具有化学组成的高碳钢板，所述化学成分以重量％计含有0.3〜1.0％，Mn：0.1〜1.2％，Si：大于0但小于0.4％，Al：0.01-0.1％，S：大于0但不大于0.01％，其余为Fe和不可避免的杂质ii）将板坯加热至高于Ar3相变点的温度， iii）对板坯进行粗铣，并在温度高于Ar3相变点的奥氏体区再次研磨板坯，以产生钢板，iv）将冷却速度为50的钢板 ℃至300℃/秒，v）在400-650℃的温度下完成钢板冷却过程，并维持温度，vi）将钢板卷绕在450-700℃的温度下， vii）省略预退火工艺，并且以30％以上的压下率冷轧卷绕的钢板; 和viii）球化冷轧钢板。

2. 发明申请

WO2009082091A1 HOT ROLLED STEEL SHEET HAVING SUPERIOR HOT PRESS FORMING PROPERTY AND HIGH TENSILE STRENGTH, FORMED ARTICLE USING THE STEEL SHEET AND METHOD FOR MANUFACTURING THE STEEL SHEET AND THE FORMED ARTICLE 审中-公开
标题翻译：具有超级热压成型性能和高拉伸强度的热轧钢板和使用钢板的成形品和制造钢板和成形品的方法
公开(公告)号：WO2009082091A1
公开(公告)日：2009-07-02
申请号：PCT/KR2008/006886
申请日：2008-11-21
申请人： POSCO , LEE, Chang-Hoon , HA, Won , PARK, Cheol-Jae , JEON, Jea-Chun , RYU, Jae-Hwa
发明人： LEE, Chang-Hoon , HA, Won , PARK, Cheol-Jae , JEON, Jea-Chun , RYU, Jae-Hwa
IPC分类号： C22C38/00
CPC分类号： C22C38/04 , C21D8/0426 , C21D9/48 , C21D2211/002 , C21D2211/004 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/06
摘要： There are provided a hot rolled steel sheet that has superior hot press forming property and high tensile strength and is used for structural members and their parts of automobiles and the like, a formed article, and a method for manufacturing the hot rolled steel sheet and the formed article. The hot rolled steel sheet having superior hot press forming property and high tensile strength includes, by weight: C: 0.1 to 0.5%, Mn: 1.0 to 3.0%, Si: 0.5% or less, W: 0.1% or less, N: 0.01 to 0.1%, Al: 0.01 to 0.1%, S: 0.03% or less, P: 0.1% or less and B: 0.001 to 0.01%, at least one element selected from the group consisting of Ti: 0.001 to 0.1%, Nb: 0.001 to 0.1% and V: 0.001 to 0.1%, at least one element selected from the group consisting of Mo: 0.01 to 1.5%, Cr: 0.01 to 1.5%, Cu: 0.005 to 1.0% and Ni: 0.005-2.0%, and the balance of iron (Fe) and other inevitable impurities, wherein a structure of the hot rolled steel sheet includes 10% or less of proeutectoid ferrite, 10% or less of pearlite and the balance of bainite, or includes 10% or less of proeutectoid ferrite, 10% or less of pearlite and the balance of bainite and martensite.
摘要翻译：本发明提供一种热压成型性和拉伸强度优异的热轧钢板，用于结构部件及其汽车等部件，成形体，热轧钢板的制造方法和形成文章。具有优异的热压成形性和高拉伸强度的热轧钢板包括：C：0.1〜0.5％，Mn：1.0〜3.0％，Si：0.5％以下，W：0.1％以下，N： 0.01〜0.1％，Al：0.01〜0.1％，S：0.03％以下，P：0.1％以下，B：0.001〜0.01％，选自Ti：0.001〜0.1％ Nb：0.001〜0.1％，V：0.001〜0.1％，Mo：0.01〜1.5％，Cr：0.01〜1.5％，Cu：0.005〜1.0％，Ni：0.005〜2.0 ％，余量为铁（Fe）等不可避免的杂质，其中，热轧钢板的结构为10质量％以下的前共分离铁素体，10质量％以下的珠光体，其余为贝氏体，或者为10质量％以上较少的先共析铁素体，10％以下的珠光体和贝氏体和马氏体的平衡。

3. 发明申请

WO2010074463A3 HIGH CARBON STEEL SHEET WITH SUPERIOR HEAT TREATMENT CHARACTERISTICS, AND MANUFACTURING METHOD THEREOF 审中-公开
标题翻译：具有优良热处理特性的高碳钢板及其制造方法
公开(公告)号：WO2010074463A3
公开(公告)日：2010-08-12
申请号：PCT/KR2009007625
申请日：2009-12-21
申请人： POSCO , LEE CHANG HOON , JEON JEA-CHUN , LEE JONG-SUB , KIM KI-SOO
发明人： JEON JEA-CHUN , LEE JONG-SUB , KIM KI-SOO
IPC分类号： C22C38/00 , C21D8/02
CPC分类号： C21D1/32 , C21D8/02 , C21D8/0205 , C21D9/46
摘要： The present invention provides a method for manufacturing a high carbon steel sheet, comprising the steps of i) producing a high carbon slab having a chemical composition comprising, by wt%, C 0.3-1.0%, Mn:0.1-1.2%, Si: more than 0 but less than 0.4%, Al: 0.01-0.1%, S: more than 0 but not more than 0.01%, the remainder being Fe and inevitable impurities ii) reheating the slab to the temperature higher than the Ar3 transformation point, iii) rough-milling the slab, and milling the slab again in an austenite region having a temperature higher than the Ar3 transformation point to produce a steel sheet, iv) cooling the steel sheet on a run-out table by the cooling speed of 50°C/second to 300°C/second, v) finishing the steel sheet cooling process at a temperature of 400-650°C, and maintaining the temperature, vi) winding the steel sheet at a temperature of 450-700°C, vii) omitting a pre-annealing process, and cold-rolling the wound steel sheet by a reduction ratio of 30% or higher; and viii) spheroidizing the cold-rolled steel sheet.
摘要翻译：本发明提供一种高碳钢板的制造方法，其特征在于，包括以下工序：i）制造以重量％计含有C：0.3〜1.0％，Mn：0.1〜1.2％，Si：大于0但小于0.4％，Al：0.01-0.1％，S：大于0但不大于0.01％，余量为Fe和不可避免的杂质ii）将钢坯再加热至高于Ar3转变点的温度， iii）将板坯粗粉碎，然后在温度高于Ar3转变点的奥氏体区域中再次研磨板坯以生产钢板，iv）在退出台上以冷却速度50冷却钢板 ℃/秒至300℃/秒，v）在400-650℃的温度下完成钢板冷却过程并保持温度，vi）将钢板卷绕在450-700℃的温度下， vii）省略预退火处理，并且以30％或更高的压缩比冷轧卷绕的钢板; 和viii）使冷轧钢板球化。

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