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1. 发明专利

JP2012196692A Method for cooling control of steel stock and continuous rolling mill 有权
标题翻译：冷却控制钢和连续轧机的方法
公开(公告)号：JP2012196692A
公开(公告)日：2012-10-18
申请号：JP2011062626
申请日：2011-03-22
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： TSUKUDA TAKEHIRO , AKAMIZU HIROSHI , KOBAYASHI MASAYOSHI
IPC分类号： B21B37/76 , B21B45/02
摘要： PROBLEM TO BE SOLVED: To soften and uniformize a steel stock composition after wound throughout a longitudinal direction to increase productivity in a cold rolling step, the next step of a hot rolling step.SOLUTION: In the method for cooling control of a steel stock, a winding temperature, the temperature of a steel stock W before the steel stock W is wound in a coil form, is controlled in the hot rolling step in which the steel stock W rolled by a hot rolling mill 1 is cooled with water to be wound in the coil form, wherein the method includes a step of changing the winding temperature along the longitudinal direction of the steel stock W to uniformize the composition of the steel stock W after rolled in a longitudinal direction.
摘要翻译：要解决的问题：为了使钢坯组合物在长度方向上缠绕后软化均匀化，以提高冷轧工序的生产率，则为热轧工序的下一步骤。解决方案：在钢坯冷却控制方法中，绕组温度，将钢坯W卷绕成线圈形式的钢坯W的温度在热轧步骤中进行控制，其中钢通过热轧机1轧制的坯料用水冷却以卷绕形式，其中该方法包括沿着钢坯W的纵向改变卷绕温度以使钢坯W的组成均匀化的步骤沿纵向轧制。版权所有（C）2013，JPO＆INPIT

2. 发明专利

JP2006207020A Ultrahigh-strength steel sheet superior in hydrogen-embrittlement resistance and workability 有权
标题翻译：超高强度钢板超级耐腐蚀性和耐磨性
公开(公告)号：JP2006207020A
公开(公告)日：2006-08-10
申请号：JP2005147358
申请日：2005-05-19
申请人： Kobe Steel Ltd , Shinshu Tlo:Kk , 株式会社信州Tlo , 株式会社神戸製鋼所
发明人： YUSE FUMIO , IKEDA CHIKAYUKI , MUKAI YOICHI , AKAMIZU HIROSHI , KINUGASA JUNICHIRO , SAITO KENJI , SUGIMOTO KOICHI , HOJO TOMOHIKO
IPC分类号： C22C38/00 , C21D9/46 , C22C38/16
摘要： PROBLEM TO BE SOLVED: To provide an ultrahigh-strength steel sheet superior in hydrogen-embrittlement resistance and workability.
SOLUTION: The ultrahigh-strength steel sheet superior in hydrogen-embrittlement resistance comprises, by mass, over 0.25% to 0.60% C, 1.0-3.0% Si, 1.0-3.5% Mn, 0.15% or less P, 0.02% or less S, 1.5% or less (excluding 0%) Al, further 0.003-0.5% Cu and/or 0.003-1.0% Ni, and the balance iron with unavoidable impurities; has a metallurgical structure after the sheet has been stretch-worked at a stretching rate of 3%, in which retained austenite occupies 1% or more, bainitic ferrite and martensite occupy 80% or more in total, and ferrite and pearlite occupy 9% or less (including 0%) in total by an area rate with respect to the total structure, and in which crystal grains of the retained austenite have an average axial ratio (major axis/minor axis) of 5 or higher; and has a tensile strength of 1,180 MPa or higher.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供耐氢脆性和加工性优异的超高强度钢板。解决方案：耐氢脆性优异的超高强度钢板以质量计包含超过0.25％至0.60％的C，1.0-3.0％的Si，1.0-3.5％的Mn，0.15％或更少的P，0.02％或更小的S，1.5％以下（不含0％）Al，还含有0.003〜0.5％的Cu和/或0.003〜1.0％的Ni，余量为不可避免的杂质的铁; 在片材以3％的拉伸速度进行拉伸加工后，其中残留奥氏体占1％以上，贝氏体铁素体和马氏体总共占80％以上，铁素体和珠光体占9％，残留奥氏体的晶粒的平均轴比（长轴/短轴）为5以上，总体上的面积率相对于总结构的面积率相对较少（包括0％）; 拉伸强度为1180MPa以上。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2005336526A High strength steel sheet having excellent workability and its production method 审中-公开
标题翻译：具有优异工作能力的高强度钢板及其生产方法
公开(公告)号：JP2005336526A
公开(公告)日：2005-12-08
申请号：JP2004155252
申请日：2004-05-25
申请人： Kobe Steel Ltd , Shinshu Tlo:Kk , 株式会社信州Tlo , 株式会社神戸製鋼所
发明人： AKAMIZU HIROSHI , IKEDA CHIKAYUKI , MAKII KOICHI , MUKAI YOICHI , NAGAO MAMORU , SUGIMOTO KOICHI
IPC分类号： B21B3/00 , C21D9/46 , C22C38/00 , C22C38/06 , C22C38/58
CPC分类号： C21D1/20 , C21D1/22 , C21D1/25 , C21D8/0426 , C21D8/0436 , C21D8/0473 , C21D2211/001 , C21D2211/008
摘要： PROBLEM TO BE SOLVED: To provide a high strength steel sheet in which the balance of strength, elongation and stretch flange formability (hole expansion ratio) is excellent, and particularly, the balance of the strength and elongation is further excellent.
SOLUTION: Regarding the high strength steel sheet having excellent workability, in a retained austenitic steel sheet comprising, by mass, 0.06 to 0.6% C, Si+Al: 0.5 to 3%, 0.5 to 3% Mn, ≤0.15% (excluding 0%) P and ≤0.02% (excluding 0%) S, and comprising tempered martensite, the space factor of the tempered martensite is ≥50% to the whole structure, the space factor of the retained austenite is 3 to 20% to the whole structure, and also, the average crystal grain size of the retained austenite is ≤4.5 μm.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：提供强度，伸长率和拉伸凸缘成形性（孔膨胀率）的平衡优异的高强度钢板，特别是强度和伸长率的平衡优异。解决方案：对于具有优异加工性的高强度钢板，在残留奥氏体钢板中，以质量计为0.06〜0.6％，Si + Al：0.5〜3％，Mn为0.5〜3％，≤0.15％（不包括0％）P和≤0.02％（不包括0％）S，回火马氏体，回火马氏体的空间系数为整体结构的≥50％，残余奥氏体的空间系数为3〜20％对于整个结构，残留奥氏体的平均晶粒尺寸也≤4.5μm。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2005146301A High-strength hot-rolled steel plate superior in formability 有权
标题翻译：高强度热轧钢板超高强度
公开(公告)号：JP2005146301A
公开(公告)日：2005-06-09
申请号：JP2003381628
申请日：2003-11-11
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： IKEDA CHIKAYUKI , AKAMIZU HIROSHI , MAKII KOICHI , HASHIMOTO SHUNICHI
IPC分类号： C22C38/00 , C22C38/12
摘要： PROBLEM TO BE SOLVED: To provide a high-strength hot-rolled steel plate superior in the balance of strength, ductility and work hardening characteristics.
SOLUTION: The high-strength hot-rolled steel plate comprises, by mass% (hereinafter the same about components), 0.06-0.23% C, 0.5-2.5% Si, 0.5-2.5% Mn, 0.03-0.10% Nb and/or 0.1-1.0% Mo, and the balance iron with unavoidable impurities; and has a metallographic structure which includes, by an area rate (hereinafter the same about the metallographic structure), 5-20% retained austenite, 20% or more polygonal ferrite and 30% or more bainitic ferrite, while satisfying 60% or more polygonal ferrite and bainitic ferrite in total.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供在强度，延展性和加工硬化特性的平衡方面优异的高强度热轧钢板。解决方案：高强度热轧钢板以质量％计（以下与组分相同）包含0.06-0.23％C，0.5-2.5％Si，0.5-2.5％Mn，0.03-0.10％Nb 和/或0.1-1.0％Mo，余量为不可避免杂质的铁; 并且具有金相组织，其面积率（以下相当于金相结构）包含5-20％的残留奥氏体，20％以上的多边形铁素体和30％以上的贝氏体铁素体，同时满足60％以上的多边形铁素体和贝氏体铁素体。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2004211147A Galvanized steel sheet excellent in hot-press formability and method for producing hot-press formed member using this sheet, hot-press formed member excellent in high strength and appearance 有权
公开(公告)号：JP2004211147A
公开(公告)日：2004-07-29
申请号：JP2002381218
申请日：2002-12-27
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： IKEDA CHIKAYUKI , MAKII KOICHI , AKAMIZU HIROSHI , ASAI TATSUYA
IPC分类号： C22C38/00 , C22C38/04 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a galvanized steel sheet excellent in hot-press formability used for producing a hot-press formed member having ≥ 980 MPa strength and excellent appearance.
SOLUTION: This galvanized steel sheet contains, by mass%, 0.05-0.4% C, ≤1.0% Si (no containing 0), 2.5-8% Mn and Ac
3 point shown in the following equation (1) is ≤800°C. Ac
3 (°C)=910-203×[C]
1/2 +44.7[Si]-30[Mn]-11[Cr]+31.5[Mo]-15.2[Ni]-20[Cu]: (1) (in the equation, [] is shown as mass% of each containing component).
COPYRIGHT: (C)2004,JPO&NCIPI

6. 发明专利

JP2003138345A HIGH STRENGTH AND HIGH DUCTILITY STEEL AND STEEL SHEET HAVING EXCELLENT LOCAL DUCTILITY, AND METHOD OF PRODUCING THE STEEL SHEET 审中-公开
公开(公告)号：JP2003138345A
公开(公告)日：2003-05-14
申请号：JP2002085209
申请日：2002-03-26
申请人： KOBE STEEL LTD
发明人： MAKII KOICHI , IKEDA CHIKAYUKI , AKAMIZU HIROSHI , HASHIMOTO SHUNICHI , YURI TSUKASA
IPC分类号： C21D9/46 , C22C38/00 , C22C38/04 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide steel and a steel sheet having high strength and high ductility and also provided with excellent local ductility, and to provide a method of producing the steel sheet. SOLUTION: Each of the steel and the steel sheet has a composition containing, by mass, 0.06 to 0.20% C, =30%. The content of Si is preferably controlled in =20 sec.

7. 发明专利

JP2009160655A Press forming method of formed member with flange 审中-公开
标题翻译：具有法兰的成形构件的压制成形方法
公开(公告)号：JP2009160655A
公开(公告)日：2009-07-23
申请号：JP2008292746
申请日：2008-11-14
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： AKAMIZU HIROSHI , IWATANI JIRO
IPC分类号： B21D19/08
CPC分类号： B21D19/08 , B21D22/02 , Y10T29/49622 , Y10T29/49627
摘要： PROBLEM TO BE SOLVED: To provide a press forming method capable of preventing occurrence of stretch-flange crack while using a conventional press forming apparatus in the case of press-forming a formed member with flange. SOLUTION: This method is characterized by the shape of a blank for press forming, and a blank B in accordance with the invention is constructed by a base body blank portion 11 corresponding to a flat base body of the formed member, and a concave flange blank portion 17 formed by bending on a concave outer peripheral edge 12 of the base body blank portion. The concave blank portion 17 is constituted by a convex flange blank portion 14 in which a stretch-flange deformation is generated, and an adjacent flange blank portion 16 which is adjacent thereto. An outer peripheral edge of the convex flange blank portion 14 is formed such that one end exists between c and e on a profile line Lp corresponding to an outer peripheral edge of the adjacent flange blank portion 16, the other end exists between d and f, and the one end and the other end are smoothly connected between the straight lines cd and ef, as shown in the figure. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种在使用常规的压制成形装置的情况下，在形成具有凸缘的成形构件的情况下，能够防止发生拉伸凸缘裂纹的冲压成形方法。解决方案：该方法的特征在于用于压制成型的坯料的形状，并且根据本发明的坯料B由对应于成形构件的平坦基体的基体坯件部分11构成，凹形凸缘坯料部分17，其通过在基体坯料部分的凹入的外周边缘12上弯曲而形成。凹形坯部17由产生拉伸凸缘变形的凸形凸缘坯料部分14和与其相邻的相邻凸缘坯料部分16构成。形成凸凸缘坯料部分14的外周边缘，使其一端存在于与相邻凸缘坯料部分16的外周边缘相对应的轮廓线Lp之间的c和e之间，另一端存在于d与f之间，并且一端和另一端平滑地连接在直线cd和ef之间，如图所示。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2007198895A Evaluation method of delayed breaking resistance of high-strength steel sheet 有权
标题翻译：高强度钢板耐久性评估方法
公开(公告)号：JP2007198895A
公开(公告)日：2007-08-09
申请号：JP2006017550
申请日：2006-01-26
申请人： Kobe Steel Ltd , Shinshu Tlo:Kk , 株式会社信州Tlo , 株式会社神戸製鋼所
发明人： KINUGASA JUNICHIRO , YUSE FUMIO , SUGIMOTO KOICHI , MUKAI YOICHI , KAMITSUMA SHINJI , AKAMIZU HIROSHI , KASUYA KOJI
IPC分类号： G01N17/00 , G01N3/08 , G01N3/20
摘要： PROBLEM TO BE SOLVED: To provide an evaluation method of the delayed breaking resistance (hydrogen embrittlement) of a steel sheet, especially a TRIP steel sheet or the like which is processed in a region of high elongation not adapted heretofore to be formed into a press part not used heretofore from an aspect of a processing limit.
SOLUTION: In the evaluation method of the delayed breaking resistance of the high-strength steel sheet with a tensile strength of 1,180 MPa or above, tensile processing of specific plastic strain quantity is applied to the test piece of the high-strength steel sheet and either one of U-bending processing of a specific bending radius and V-bending processing of a specific bending angle is subsequently applied to the high-strength steel sheet. Further, with specific compression stress loaded on both side parts of the test piece, the test piece is immersed in an electrolytic solution as a cathode and a constant current is passed through the cathode and an anode to perform hydrogen charge to evaluate the delayed breaking resistance of the high-strength steel sheet on the basis of the time until a crack is formed in the cathode test piece.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：待解决的问题：提供一种钢板，特别是TRIP钢板等的延迟断裂阻力（氢脆）的评价方法，该TRIP钢板等在未成形的高伸长范围内加工成为从处理限制的方面到目前为止未使用的压榨部。解决方案：在拉伸强度为1180MPa以上的高强度钢板的耐断裂性的评价方法中，对高强度钢的试验片施加特定的塑性应变量的拉伸加工随后对高强度钢板施加特定弯曲半径的U形弯曲加工和特定弯曲角度的V形弯曲加工中的任一种。此外，通过在试验片的两个侧面上加载特定的压缩应力，将试验片浸渍在作为阴极的电解液中，使恒定电流通过阴极和阳极进行氢气充电，以评价延迟断裂电阻基于在阴极试验片中形成裂纹的时间的高强度钢板。版权所有（C）2007，JPO＆INPIT

9. 发明专利

JP2007107099A Cold-rolled sheet steel excellent in workability, its production method and hot-dip galvanized steel sheet obtained using the steel sheet as base material 有权
标题翻译：冷轧钢板优良的工作能力，其生产方法和采用钢板作为基材获得的热镀锌钢板
公开(公告)号：JP2007107099A
公开(公告)日：2007-04-26
申请号：JP2006316516
申请日：2006-11-24
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： IKEDA CHIKAYUKI , MAKII KOICHI , AKAMIZU HIROSHI , HASHIMOTO SHUNICHI
IPC分类号： C22C38/00 , C21D9/46 , C22C38/06 , C22C38/32
摘要： PROBLEM TO BE SOLVED: To provide a cold-rolled steel sheet excellent in a balance between strength and ductility, its production method, and a hot-dip galvanized steel sheet obtained using the steel sheet as a base material. SOLUTION: The cold-rolled steel sheet comprises, by mass, 0.04-0.16% C, ≤0.5% Si, 0.5-1.5% Mn, ≤0.20% P, ≤0.01% S, 0.005-0.10% Al, ≤0.005% N and the balance being Fe and unavoidable impurities and has a structure comprising ferrite and a second phase formed of pearlite and COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供在强度和延展性之间的平衡优异的冷轧钢板，其制造方法和使用钢板作为基材获得的热浸镀锌钢板。解决方案：冷轧钢板以质量计含有0.04-0.16％C，≤0.5％Si，0.5-1.5％Mn，≤0.20％P，≤0.01％S，0.005-0.10％Al，≤ 0.005％N，余量为Fe和不可避免的杂质，并且具有包括铁素体和由珠光体形成的第二相和<3％（包括0％）贝氏体的面积比的结构，其中铁素体的平均粒径为2 -6μm，以圆当量直径计。冷轧钢板可以通过将未退火冷轧板进行再结晶退火，通过将其在铁素体和奥氏体两相共存并随后冷却的温度范围内的退火温度进行加热而进行。在500-700℃的温度范围内以10℃/秒以上的加热速度进行加热。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2006207017A Ultrahigh-strength steel sheet superior in hydrogen-embrittlement resistance 有权
标题翻译：超强度钢板超级耐腐蚀性
公开(公告)号：JP2006207017A
公开(公告)日：2006-08-10
申请号：JP2005147239
申请日：2005-05-19
申请人： Kobe Steel Ltd , Shinshu Tlo:Kk , 株式会社信州Tlo , 株式会社神戸製鋼所
发明人： YUSE FUMIO , IKEDA CHIKAYUKI , MUKAI YOICHI , AKAMIZU HIROSHI , KINUGASA JUNICHIRO , SAITO KENJI , SUGIMOTO KOICHI , HOJO TOMOHIKO
IPC分类号： C22C38/00 , C21D9/46 , C22C38/16
摘要： PROBLEM TO BE SOLVED: To provide an ultrahigh-strength steel sheet superior in hydrogen-embrittlement resistance.
SOLUTION: The ultrahigh-strength steel sheet superior in hydrogen-embrittlement resistance comprises, by mass, 0.10-0.25% C, 1.0-3.0% Si, 1.0-3.5% Mn, 0.15% or less P, 0.02% or less S, 1.5% or less (excluding 0%) Al, further 0.003-0.5% Cu and/or 0.003-1.0% Ni, and the balance iron with unavoidable impurities; has a metallurgical structure in which retained austenite occupies 1% or more, bainitic ferrite and martensite occupy 80% or more in total, and ferrite and pearlite occupy 9% or less (including 0%) in total by an area rate with respect to the total structure, and in which crystal grains of the retained austenite have an average axial ratio (major axis/minor axis) of 5 or higher; and has further a tensile strength of 1,180 MPa or higher.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供耐氢脆性优异的超高强度钢板。解决方案：耐氢脆性优异的超高强度钢板以质量计包含0.10-0.25％C，1.0-3.0％Si，1.0-3.5％Mn，0.15％以下P，0.02％以下 S，1.5％以下（不含0％）Al，还含有0.003〜0.5％的Cu和/或0.003〜1.0％的Ni，余量为不可避免的杂质的铁; 残留奥氏体占1％以上的冶金结构，贝氏体铁素体和马氏体总共占80％以上，铁素体和珠光体占总面积的9％以下（含0％），面积率相对于总结构，其中残留奥氏体的晶粒的平均轴比（长轴/短轴）为5以上; 并具有1180MPa以上的拉伸强度。版权所有（C）2006，JPO＆NCIPI

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