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1. 发明专利

JP2007262467A Hot rolled steel sheet for hydroforming, its production method and electric resistance welded tube for hydroforming 有权
标题翻译：用于压铸的热轧钢板，其生产方法和电阻焊管用于加氢
公开(公告)号：JP2007262467A
公开(公告)日：2007-10-11
申请号：JP2006087710
申请日：2006-03-28
申请人： Sumitomo Metal Ind Ltd , Sumitomo Pipe & Tube Co Ltd , 住友金属工業株式会社 , 住友鋼管株式会社
发明人： YOSHIDA MITSURU , TOMITA TOSHIRO
IPC分类号： C22C38/00 , B21D26/02 , B21D26/053 , C21D9/46 , C22C38/14
摘要： PROBLEM TO BE SOLVED: To produce a hot rolled steel sheet for hydroforming which has a strength of ≥500 MPa and excellent hydroforming properties free from the occurrence of cracking even upon swelling by hydroforming.
SOLUTION: A slab having a steel composition comprising >0.01 to 0.13% C, 0.005 to 1.0% Si, 0.1 to 3.0% Mn, ≤0.04% P, ≤0.03% S, 0.001 to 0.1% Al, 0.02 to 0.2% Ti, 0.002 to 0.1% Nb and ≤0.01% N, further satisfying -0.05
摘要翻译：解决的问题：为了制造强度≥500MPa的液压成形用热轧钢板，即使在液压成形时膨胀也不会发生裂纹的优异的液压成形性。解决方案：具有钢组成的板坯，其含有0.01〜0.13％的C，0.005〜1.0％的Si，0.1〜3.0％的Mn，≤0.04％的P，≤0.03％的S，0.001〜0.1％的Al，0.02〜0.2 ％Ti，0.002〜0.1％Nb，≤0.01％N，进一步满足-0.05 <4（C + N） - （Ti + V + Nb / 2 + Mo / 2）<0.2，余量为不可避免的杂质为进行热机械处理，制造平均粒径为1.1〜10μm的铁素体相的面积率≥95％，拉伸强度≥500MPa的液压成形用热轧钢板，拉伸强度×单轴拉伸伸长率为14,000（MPa％）。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2007270197A Steel sheet for for hydroform working and steel tube for hydroform working, and method for manufacturing therefor 有权
标题翻译：用于水力发电工程的钢板和用于水力发电工作的钢管及其制造方法
公开(公告)号：JP2007270197A
公开(公告)日：2007-10-18
申请号：JP2006095067
申请日：2006-03-30
申请人： Sumitomo Metal Ind Ltd , Sumitomo Pipe & Tube Co Ltd , 住友金属工業株式会社 , 住友鋼管株式会社
发明人： YOSHIDA MITSURU , TOMITA TOSHIRO
IPC分类号： C22C38/00 , B21D26/02 , B21D26/053 , C21D9/46 , C22C38/14
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet which is formed by hydroforming at low cost without undergoing heat treatment before hydroforming and diameter reducing rolling for hydroforming particularly appropriately used as a raw material for, for example, structural members, chassis members, etc., of a car body.
SOLUTION: The steel sheet for hydroforming has a composition consisting of 0.02 to 0.2% C, 0.005 to 1.0% Si, 0.1 to 3.0% Mn, 0.005 to 0.1% P, ≤0.01% S, 0.005 to 1.0% Al, 0.0005 to 0.01% N, and 0.01 to 0.2% Ti and/or 0.01 to 0.2% Nb, and if necessary consists of 0.5 V and/or 0.5% Mo, and/or 0.01% Ca, and/or 0.01% Mg and the balance Fe and inevitable impurities, in which the ferrite phase of 1.1 to 10 μm in average grain size and 0.3 to ≤3 in average aspect ratio is 60 to 98%, [the tensile strength TS (MPa) in the rolling direction]×[monoaxial tensile total elongation EL (%)] is ≥14,000 (MPa%), and [the tensile strength (MPa) in the transverse direction of the sheet]×[monoaxial tensile uniform elongation UEL (%)] is ≥7,000 (MPa%).
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种低成本的液压成形而不进行液压成形前的热处理的钢板，以及特别适合用作例如结构部件的原材料的液压成形的直径缩径轧制的底盘部件等等，车身。解决方案：液压成型用钢板的组成为：由0.02〜0.2％的C，0.005〜1.0％的Si，0.1〜3.0％的Mn，0.005〜0.1％的P，≤0.01％的S，0.005〜1.0％的Al， 0.0005〜0.01％的N和0.01〜0.2％的Ti和/或0.01〜0.2％的Nb，如果需要，由0.5V和/或0.5％的Mo和/或0.01％的Ca和/或0.01％的Mg组成，将平均粒径为1.1〜10μm的铁素体相和平均纵横比为0.3〜≤3的铁和不可避免的杂质平衡为60〜98％[轧制方向的拉伸强度TS（MPa）]×[ 单轴拉伸总伸长率EL（％）]≥14,000（MPa％），[片材横向的拉伸强度（MPa）××单轴拉伸均匀伸长率UEL（％）]≥7,000（MPa％）。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2011214072A Cold-rolled steel sheet, and method for producing the same 有权
标题翻译：冷轧钢板及其制造方法
公开(公告)号：JP2011214072A
公开(公告)日：2011-10-27
申请号：JP2010083291
申请日：2010-03-31
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： IMAI NORIO , TOMITA TOSHIRO , HAGA JUN , TANAKA YASUAKI , FUKUSHIMA SUGUHIRO
IPC分类号： C22C38/00 , B21B3/00 , C21D9/46 , C22C38/06 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide a high strength cold-rolled steel sheet which has a low yield ratio and excellent ductility and hole expansibility without requiring special hot rolling and the addition of alloy elements such as Nb and Ti.SOLUTION: The cold-rolled steel sheet has: a chemical composition containing, by mass, 0.01 to 0.15% C, 0.01 to 1.5% Si, 1.5 to 3.5% Mn, ≤0.1% P, ≤0.01% S, >0.10 to 1.5% Al and ≤0.010% N, wherein α value defined by formula (1) of α=Mn+Si×0.5+Al×0.4 is ≥1.9; a steel structure where the volume ratio of ferrite at a depth position of 1/4 of the sheet thickness from the surface of the steel sheet is ≥40% and the volume ratio of martensite is ≥3%; and mechanical properties in which a yield ratio YR is ≤70%, tensile strength TS(MPa) and hole expansion ratio HER(%) satisfy inequality (2) of TS×HER≥0.9×10, and a tensile strength TS(MPa) and the total elongation El(%) satisfy inequality (3) of TS×El≥5.0×10.
摘要翻译：要解决的问题：提供一种具有低屈服比和优异的延展性和孔膨胀性的高强度冷轧钢板，而不需要特殊的热轧和添加诸如Nb和Ti的合金元素。解决方案：冷轧钢板具有：以质量计0.01〜0.15％的Si，0.01〜1.5％的Si，1.5〜3.5％的Mn，≤0.1％的P，≤0.01％的S，> 0.10〜1.5％的Al和≤0.010％ N，其中α= Mn + Si×0.5 + Al×0.4的式（1）定义的α值≥1.9; 在钢板表面的1/4厚度的铁素体的体积比为≥40％，马氏体的体积比为3％以下的钢结构体; 屈服比YR为70％，拉伸强度TS（MPa）和孔膨胀率HER（％）的机械性能满足TS×HER≥0.9×10的不等式（2），拉伸强度TS（MPa）总伸长率El（％）满足TS×El≥5.0×10的不等式（3）。

4. 发明专利

JP2011214068A Method for manufacturing cold-rolled steel sheet 有权
标题翻译：制造冷轧钢板的方法
公开(公告)号：JP2011214068A
公开(公告)日：2011-10-27
申请号：JP2010083287
申请日：2010-03-31
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： IMAI NORIO , TOMITA TOSHIRO , HAGA JUN , FUKUSHIMA SUGUHIRO
IPC分类号： C21D9/46 , C22C38/00 , C22C38/14 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a cold-rolled steel sheet superior in deep drawability, with high productivity and with an industrially easy process.SOLUTION: A steel ingot or a steel slab has a chemical composition including, by mass%, less than 0.010% C, 1.5% or less Si, 2.0% or less Mn, 0.10% or less P, 0.010% or less S, 0.0005-0.10% Al, 0.0060% or less N, 0.001-0.10% Ti, 0.001-0.10% Nb, and satisfying the relation: (C/12+N/14+S/32)/(Ti/48+Nb/93)≤1.4. The manufacturing method includes: subjecting the steel ingot or the steel slab to a multi-pass hot rolling process in which the total rolling reduction of two passes of each one and two preceding pass to the last pass is controlled to less than 45%, the rolling reduction of the last pass is controlled to more than 25%, and the last pass is finished at (Arpoint -30°C) or higher and 880°C or higher; cooling the plate to 820°C at an average cooling rate of 400°C/second or more within a period of 0.5 seconds after the completion of the hot rolling process; winding the plate in a temperature range of 400°C or higher but lower than 700°C to produce a hot-rolled steel plate; pickling the hot-rolled steel plate; cold-rolling the resultant plate with a rolling reduction of 60-95%; and annealing the obtained cold-rolled steel sheet in a temperature range of 700-910°C.
摘要翻译：要解决的问题：提供一种制造具有深冲性优异的冷轧钢板的方法，具有高生产率和工业上容易的工艺。解决方案：钢锭或钢坯具有以质量％计的化学组成，，小于0.010％C，1.5％以下Si，2.0％以下Mn，0.10％以下P，0.010％以下S，0.0005〜0.10％Al，0.0060％以下N，0.001-0.10％Ti，0.001 -0.10％Nb，满足关系式（C / 12 + N / 14 + S / 32）/（Ti / 48 + Nb / 93）≤1.4。制造方法包括：对钢锭或钢坯进行多次热轧工序，其中将前一次通过的前后两通过的两道次的总压下率控制为小于45％，最后通过的压下率控制在25％以上，最后一次通过（Arpoint -30℃）以上且880℃以上，在热轧工序结束后的0.5秒内，将板冷却至820℃，平均冷却速度为400℃/秒以上; 在400℃以上但低于700℃的温度范围内卷绕该板，制成热轧钢板; 酸洗热轧钢板; 冷轧所得板材，轧制压下率为60-95％; 并在700-910℃的温度范围内退火得到的冷轧钢板。

5. 发明专利

JP2011149066A Cold rolled steel sheet, hot rolled steel sheet, and method for producing them 有权
标题翻译：冷轧钢板，热轧钢板及其生产方法
公开(公告)号：JP2011149066A
公开(公告)日：2011-08-04
申请号：JP2010012111
申请日：2010-01-22
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： WAKITA MASAYUKI , TOMITA TOSHIRO
IPC分类号： C22C38/00 , B21B3/00 , C21D9/46 , C22C38/14
摘要： PROBLEM TO BE SOLVED: To provide a cold rolled steel sheet and a hot rolled steel sheet having excellent workability in spite of their fine grained-structure and high strength.
SOLUTION: The cold rolled steel sheet has a composition comprising, by mass, 0.06 to 0.25% C, 0.01 to 2.0% Si, 0.5 to 2.0% Mn and 0.01 to 2.0% Al, and further comprising one or two selected from ≤0.20% Ti and ≤0.10% N, and comprising Si+Al and Ti+Nb by prescribed amounts, and has a steel structure comprising, by volume, ≥70% ferrite and ≥3% retained austenite, and the balance bainite with inevitable martensite, and in which the average grain size of the ferrite is ≤3.0 μm, the average grain size of the retained austenite is ≤1.0 μm, and the ratio of the retained austenite with an aspect ratio of ≤2 occupied in the retained austenite is ≥60 vol.%. In the hot rolled steel sheet, the value of solid solution Ti+solid solution N is ≥0.003 mass%. There are also provided methods for producing the hot rolled steel sheet and the cold rolled steel sheet.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：解决的问题：提供尽管其细晶粒结构和高强度的加工性优异的冷轧钢板和热轧钢板。解决方案：冷轧钢板具有质量分数为0.06〜0.25％，Si：0.01〜2.0％，Mn：0.5〜2.0％，Al：0.01〜2.0％，进一步含有选自 ≤0.20％的Ti和≤0.10％的N，并且含有规定量的Si + Al和Ti + Nb，并且具有包含体积≥70％的铁素体和≥3％的残余奥氏体的钢结构，并且余量贝氏体不可避免马氏体，铁素体的平均粒径≤3.0μm时，残留奥氏体的平均粒径≤1.0μm，残留奥氏体中的纵横比≤2的残留奥氏体的比例为 ≥60体积％。在热轧钢板中，固溶Ti +固溶体N的含量≥0.003质量％。还提供了制造热轧钢板和冷轧钢板的方法。版权所有（C）2011，JPO＆INPIT

6. 发明专利

JP2011144414A Cold rolled steel sheet and method for producing the same 有权
标题翻译：冷轧钢板及其制造方法
公开(公告)号：JP2011144414A
公开(公告)日：2011-07-28
申请号：JP2010005113
申请日：2010-01-13
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： YOSHIDA MITSURU , IMAI NORIO , TOMITA TOSHIRO
IPC分类号： C22C38/00 , C21D9/46 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a cold rolled steel sheet which combines excellent deep drawability and fatigue properties, and a method for producing the same.
SOLUTION: A steel comprising, by mass, 0.015 to 0.15% C, ≤2.0% Si, 0.1 to 3.0% Mn, ≤0.05% P, ≤0.05% S, 0.001 to 0.1% sol.Al, 0.001 to 0.01% N and ≤0.01% O is subjected to multistep pass hot rolling in such a manner that rolling interpass time between the rolling pass immediately before the final rolling pass and the final rolling pass is controlled to 0.3 to 4.0 s, the completion temperature of the final rolling pass is controlled to an Ar
3 point or above and also 780°C or above, and cooling time to 720°C after the completion of the rolling is controlled to ≤0.4s, is next subjected to cold rolling at a draft of 40 to 90%, and is thereafter annealed. In the obtained cold rolled steel sheet, TS
ave [=(TS
0 +2×TS
45 +TS
90 )/4] is ≥300 MPa, YR
ave [=(YR
0 +2×YR
45 +YP
90 )/4] is ≥0.67, |Δr| is ≤0.20, r
ave /|Δr| is ≤4.7, [Δr=(r
0 -2×r
45 +r
90 )/2 and r
ave =(r
0 +2×r
45 +r
90 )/4] are satisfied; wherein subscripts 0, 45 and 90 denote a rolling direction, a 45° direction to the rolling direction and a 90° direction to the rolling direction, respectively.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种结合了优异的深冲性和疲劳特性的冷轧钢板及其制造方法。解决方案：一种钢，其含有0.015〜0.15％的C，≤2.0％的Si，0.1〜3.0％的Mn，≤0.05％的P，≤0.05％的S，0.001〜0.1％的溶胶，0.001〜0.01 ％N和≤0.01％O经受多步通过热轧，使得在最终轧制过程之前的轧制通过和最终轧制过程之间的轧制间隙时间被控制在0.3-4.0秒，完成温度最终轧制道次被控制到Ar 3 点以上，也为780℃以上，轧制结束后的冷却时间为720℃，控制为≤0.4s，下一次以40〜90％的通气冷轧，然后退火。在得到的冷轧钢板中，TS = =（TS 0 + 2×TS + TS 90 ）/ 4]≥300MPa，YR ave [=（YR 0 + 2×YR 45 + YP < / SB>）/ 4]为≥0.67，¾Δr¾为≤0.20，r ave /¾Δr¾为≤4.7，[Δr=（r 0 -2×r 45 + r 90 ）/ 2和r ave =（r 0 + 2×r < SB> + r 90 ）/ 4] 其中下标0,45和90分别表示轧制方向，轧制方向的45°方向和轧制方向的90°方向。版权所有（C）2011，JPO＆INPIT

7. 发明专利

JP2008266792A Hot-rolled steel sheet 审中-公开
标题翻译：热轧钢板
公开(公告)号：JP2008266792A
公开(公告)日：2008-11-06
申请号：JP2008138979
申请日：2008-05-28
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： YOSHIDA MITSURU , TOMITA TOSHIRO
IPC分类号： C22C38/00 , C21D9/46 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a hot rolled steel sheet having both of high ductility and flanging characteristic. SOLUTION: The hot rolled steel sheet contains, by mass%, 0.02 to 0.25% C, ≤2.0% Si, 0.5 to 2.5% Mn, ≤0.2% P, ≤0.05% S, 0.005 to 0.5% Al, and ≤0.01% N, and the balance Fe and inevitable impurities. The hot rolled steel sheet has the texture composed of a bainite phase and a ferrite phase of 40 to 95% in volumetric rate, in which the average crystal grain size of the ferrite is ≥1.2 μm to COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供具有高延展性和凸缘特性两者的热轧钢板。解决方案：热轧钢板以质量％计含有C：0.02〜0.25％，Si：2.0％，Mn：0.5〜2.5％，P：≤0.05％，Al：0.005〜0.5％ ≤0.01％N，余量为Fe和不可避免的杂质。该热轧钢板的贝氏体相和铁素体相的体积率为40〜95体积％，铁素体的平均晶粒尺寸为≥2μm〜<4μm。 Ti，Nb，V，B，Cu，Cr，Mn，Ca，REM和Mg中的一种以上也可以含有上述成分。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2008229725A Method for producing fine-grained hot rolled steel sheet 有权
标题翻译：生产精细热轧钢板的方法
公开(公告)号：JP2008229725A
公开(公告)日：2008-10-02
申请号：JP2008135345
申请日：2008-05-23
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： IMAI NORIO , TOMITA TOSHIRO
IPC分类号： B21B3/00 , B21B1/26 , C21D9/46 , C22C38/00 , C22C38/06 , C22C38/38
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a fine-grained hot rolled steel sheet having excellent workability as hot-rolled, and suitable as the stock for a high strength member used for automobiles, various industrial machineries and building.
SOLUTION: In the method for producing a hot rolled steel sheet where finish rolling is performed using a tandem rolling mill line after rough rolling, rolling is performed at an Ar
3 point or above by a rolling mill before one step from the final one in the tandem rolling mill line, thereafter, cooling is performed to a temperature range of an Ar
3 point-20°C or below at the average cooling rate of ≥50°C/s, further, rolling is performed at a draft of ≤20% by the final rolling mill in the tandem rolling stock line, and within 0.4 s after that, cooling is performed to 720°C.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：待解决的问题：提供一种具有优异的热轧加工性的细粒热轧钢板的制造方法，适用于汽车，各种工业机械和建筑物的高强度部件的坯料。＆lt; P＆gt;解决方案：在粗轧后使用串列轧制线进行精轧的热轧钢板的制造方法中，通过轧制在Ar 3 以上进行轧制在串列式轧制生产线的最后一步之间进行轧制，此后，以≥50的平均冷却速度进行冷却至Ar 3 20℃或更低的温度范围 ℃，进一步通过串联轧制坯料线中的最终轧机以≤20％的压下量进行轧制，在0.4s之后，进行720℃的冷却。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2007039749A High strength hot rolled steel sheet and its manufacturing method 有权
标题翻译：高强度热轧钢板及其制造方法
公开(公告)号：JP2007039749A
公开(公告)日：2007-02-15
申请号：JP2005225804
申请日：2005-08-03
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： IMAI NORIO , TOMITA TOSHIRO
IPC分类号： C22C38/00 , C21D9/46 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a high strength hot rolled steel sheet having excellent mechanical strength, workability and thermal stability and suitable as a stock for use in applications, such as automotive use, household electrical appliance use, machine structural use and construction use, and also to provide its manufacturing method.
SOLUTION: The high strength hot rolled steel sheet has a chemical composition consisting of, by mass, 0.02 to 0.2% C, ≤2% Si, 0.5 to 3% Mn, ≤1.5% Cr, ≤1% Mo, ≤2% Al, ≤0.2% P, ≤0.05% S, ≤0.01% N and the balance Fe with impurities and having ≥1.6% manganese equivalent and also has a structure containing, by volume fraction, ≥50% ferrite and ≥10% martensite. In the steel sheet, the average grain size of ferrite in a position at a depth one-fourth the sheet thickness from the surface of the steel sheet satisfies prescribed inequalities, and also the rate of increase at 700°C in the average grain size of ferrite in the position at a depth one-fourth the sheet thickness from the surface of the steel sheet and the above average grain size satisfy a prescribed relational inequality.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供具有优异的机械强度，可加工性和热稳定性的高强度热轧钢板，并且适合用作汽车用途，家用电器用途，机械结构用途等应用中的原料施工使用，并提供其制造方法。解决方案：高强度热轧钢板具有以质量计0.02〜0.2％C，≤2％Si，0.5〜3％Mn，≤1.5％Cr，≤1％Mo，≤ 2％Al，≤0.2％P，≤0.05％S，≤0.01％N，余量为Fe和杂质，锰当量≥1.6％，并且具有体积分数≥50％铁素体和≥10％马氏体。在钢板中，从钢板表面的四分之一厚度的铁素体的平均粒径满足规定的不等式，平均粒径为700℃时的增加率距离钢板表面四分之一厚度的铁素体和上述平均粒径满足规定的关系不等式。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2004084034A Method for producing bi-directional magnetic steel sheet 审中-公开
公开(公告)号：JP2004084034A
公开(公告)日：2004-03-18
申请号：JP2002249154
申请日：2002-08-28
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： SANO NAOYUKI , TOMITA TOSHIRO , KAMINOTANI SHIGEO
IPC分类号： C21D9/46 , C21D8/12 , C22C38/00 , C22C38/04 , H01F1/16
CPC分类号： Y02P10/212
摘要： PROBLEM TO BE SOLVED: To provide a magnetic steel sheet which has excellent bi-directional magnetic characteristic of the rolled direction and the direction orthogonal to the above direction in the parallel to the sheet surface at ä100} face of bcc lattice. SOLUTION: In a method for producing the di-directional magnetic steel sheet, with which the steel containing by mass% of 0.02-0.2% C, 2.4-4.0% Si and 0.2-2.0% Mn, is hot rolled and successively, a cold-rolling and an intermediate annealing on the way of both processes, are performed and thereafter, a finish annealing is performed by holding separating agent for annealing between the steel sheets, The intermediate annealing is performed by heating at (α+γ)-two phase range of ≥ 750°C and in the cooling process, the passing-through time in the temperature range of 500-300°C, is set to ≥100 sec. As the other way, in this producing method, the above intermediate annealing is heated to the (α+γ)-two phase range of ≥750°C and thereafter, cooled at just above A 1 point and isothermally held for ≥100 sec at a specific temperature of 500-300°C. COPYRIGHT: (C)2004,JPO

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