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1. 发明专利

JP2012140685A Welded joint 有权
标题翻译：焊接接头
公开(公告)号：JP2012140685A
公开(公告)日：2012-07-26
申请号：JP2011000354
申请日：2011-01-05
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： YODA NOBORU , FUJIWARA TOMOYA , KAMIMURA TAKAYUKI , YUKI HIDEAKI , KAJIMA KAZUYUKI
IPC分类号： C22C38/00 , C21D8/02 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a welded joint which can ameliorate the fatigue crack formation properties of a welded zone, can exhibit fatigue crack propagation resistance properties of a base material zone as well as is good in corrosion resistance in a high chloride environment.SOLUTION: The welded joint is formed by welding a base material which has a chemical composition containing, by mass%, 0.01-0.10% C, 0.04-0.60% Si, 0.50-2.00% Mn, 0.025 or less P, 0.020 or less S, 0.003-0.060% Al, 0.001-0.100% Ti, 0.03-0.50% Sn and 0.0020-0.0120% N, with the balance comprising Fe and impurities, has a composite structure composed of a base material as a hard part and a soft part dispersed in the base material, and has a hardness difference between the hard part and the soft part of 150 or more in terms of Vickers hardness. The welded joint is characterized in that the hardness of the weld heat-affected zone and the hardnesses of each of the base material and the weld metal satisfy a specified relationship, and the value of the work hardening coefficient of the weld heat-affected zone is 0.12 or less.
摘要翻译：要解决的问题：为了提供可以改善焊接区域的疲劳裂纹形成性能的焊接接头，可以表现出基材区域的耐疲劳裂纹扩展性能，并且在高氯化物中具有良好的耐腐蚀性环境。解决方案：焊接接头是通过焊接具有以质量％计含有0.01-0.10％C，0.04-0.60％Si，0.50-2.00％Mn，0.025或更小P，0.020 或更少的S，0.003-0.060％的Al，0.001-0.100％的Ti，0.03-0.50％的Sn和0.0020-0.0120％的N，余量包含Fe和杂质，具有由基材作为硬质部分组成的复合结构和分散在基材中的柔软部分，并且在维氏硬度方面，硬部和软部之间的硬度差为150以上。焊接接头的特征在于，焊接热影响区域的硬度和基体材料和焊接金属的硬度满足规定的关系，焊接热影响区域的加工硬化系数的值为 0.12以下。版权所有（C）2012，JPO＆INPIT

2. 发明专利

JP2010184257A Quality guaranteeing method and fatigue strength estimating method of steel material 有权
标题翻译：钢材质量保证方法和疲劳强度估算方法
公开(公告)号：JP2010184257A
公开(公告)日：2010-08-26
申请号：JP2009029338
申请日：2009-02-12
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： YODA NOBORU , ARIMOCHI KAZUSHIGE
IPC分类号： B23K31/00 , G01N33/20
摘要： PROBLEM TO BE SOLVED: To provide a method capable of simply and rapidly knowing fatigue characteristics of a weld joint. SOLUTION: A steel of the same kind as an actual steel to be served for the welding is prepared for a test piece. After the test piece is subjected to the heat treatment in which the heat history of a weld heat affected zone of the actual steel during the welding is represented, the hardness of the test piece after the heat treatment is measured. When this hardness value is equal to or less than an optional value, the fatigue characteristic of the weld joint can be guaranteed. Further, the fatigue characteristic of the weld joint can also be estimated from the hardness value. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供能够简单且快速地了解焊接接头的疲劳特性的方法。
解决方案：为试验片准备与用于焊接的实际钢相同种类的钢。对试验片进行表示焊接中的实际钢的焊接热影响区的热历史的热处理后，测定热处理后的试验片的硬度。当该硬度值等于或小于可选值时，可以保证焊接接头的疲劳特性。此外，也可以根据硬度值来估计焊接接头的疲劳特性。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2010159473A Thick steel plate and method for producing the same 有权
标题翻译：厚钢板及其制造方法
公开(公告)号：JP2010159473A
公开(公告)日：2010-07-22
申请号：JP2009003832
申请日：2009-01-09
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： KAMO TAKAHIRO , FUJIWARA TOMOYA , SHINTAKU YOSHIAKI , YODA NOBORU
IPC分类号： C22C38/00 , B21B1/26 , B21B3/00 , C21D8/02 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a thick steel plate in which both of weld heat affected zone toughness at low temperature and high strength of ≥600 MPa can be achieved. SOLUTION: The thick steel plate has a composition comprising, by mass, 0.02 to 0.10% C, 0.1 to 0.5% Si, 1.0 to 2.0% Mn, ≤0.02% P, ≤0.01% S, 0.1 to 1.0% Ni, 0.005 to 0.08% sol.Al, 0.003 to 0.02% Ti, 0.005 to 0.03% Nb, 0.003 to 0.007% N, 0.0002 to 0.0020% B and ≤0.003% O, and one or more kinds of elements selected from 0.1 to 0.6% Cu, 0.05 to 0.60% Cr, 0.02 to 0.10% Mo and 0.01 to 0.05% V, and the balance iron with impurities, and in which Ti/N is 1.0 to 3.0, K value obtained from formula (1) is 150 to 250, and hardness of the steel plate is 250 to 330 Hv in the surface and ≤230 in the central part of the plate thickness. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种厚钢板，其中可以实现低温下的焊接热影响区韧性和≥600MPa的高强度。解决方案：厚钢板具有质量分数为0.02〜0.10％的C，0.1〜0.5％的Si，1.0〜2.0％的Mn，≤0.02％的P，≤0.01％的S，0.1〜1.0％的Ni ，0.005〜0.08％的sol.Al，0.003〜0.02％的Ti，0.005〜0.03％的Nb，0.003〜0.007％的N，0.0002〜0.0020％的B和≤0.003％的O，以及选自0.1〜0.6的一种以上的元素％Cu，0.05〜0.60％Cr，0.02〜0.10％Mo和0.01〜0.05％V，余量为铁和杂质，其中Ti / N为1.0〜3.0，由式（1）得到的K值为150〜 250，钢板的硬度在表面为250〜330Hv，板厚中心部分为≤230。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2004027355A Steel member having excellent fatigue crack propagation resistance and method of producing the same 审中-公开
公开(公告)号：JP2004027355A
公开(公告)日：2004-01-29
申请号：JP2002325667
申请日：2002-11-08
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： YODA NOBORU , FUJIWARA TOMOYA , KATSUMOTO HIROSHI , SETA ICHIRO
IPC分类号： C21D8/00 , C22C38/00 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel member for structural use capable of designing material in which fatigue resistance is quantitatively treated in the material in which repeated softening is caused, and to provide a method of producing the same.
SOLUTION: A repeated softening parameter shown by the ratio between the stress σ
1 on the first maximum strainand the stress σ
15 on the 15-th maximum strain, σ
15 /σ
1 when a gradually increasing/decreasing repeated load in which the maximum tensile/compressive strain is ±0.012, a repeated velocity is 0.5 Hz and a wave number to the maximum strain is 12 is applied for 15 times is prescribed to 0.65 to 0.95. Concretely, the steel member comprises 0.02 to 0.20% C, ≤0.60% Si, 0.50 to 2.0% Mn and 0.003 to 0.10% Al, and a carbon equivalent Ceq value expressed by the formula: Ceq(%)=C+Si/24+Mn/6+Ni/40+Cr/5+Mo/4+V/14 is prescribed to 0.28 to 0.65%.
COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2003080385A Laser-welded steel structural member and steel material used in its steel structural member 有权
标题翻译：钢结构构件中使用的激光焊接钢结构件和钢材
公开(公告)号：JP2003080385A
公开(公告)日：2003-03-18
申请号：JP2001246496
申请日：2001-08-15
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： YODA NOBORU , ARIMOCHI KAZUSHIGE , FUJIWARA TOMOYA , SETA ICHIRO , KAWABATA TOMOYA
IPC分类号： B23K26/00 , B23K26/32 , B23K103/04 , C22C38/00 , C22C38/06 , C22C38/50
摘要： PROBLEM TO BE SOLVED: To provide a steel structural member having a laser welding part excellent in fatigue strength property and steel material used in its steel structural member. SOLUTION: In this laser-welded steel structural member, the value of weighted average of welding metal side vicat hardness in the region where the distance from the bonded part after laser welding is within 1.6 mm on the position of 1 mm depth from the surface of base material is
摘要翻译：要解决的问题：提供一种具有疲劳强度特性优异的激光焊接部分的钢结构件及其钢结构件中使用的钢材。解决方案：在这种激光焊接钢结构件中，焊接金属侧维卡硬度与激光焊接后的接合部的距离在距离表面1mm深的位置在1.6mm以内的区域的加权平均值基础材料是在距离在1.6mm范围内的区域中影响部分维卡硬度的焊接热量加权平均值的1.6倍。其中，距离接合部的距离在1.6mm以内的区域的维卡硬度的加权平均值表示当以<= 9.807N的试验力进行试验时，通过以下表达式计算的值; 0.4×HV10.4 + 0.3×HV10.8 + 0.2×HV11.2 + 0.1×HV11.6其中，距接合部的距离为Lmm的位置处的维氏硬度为HV1L。

6. 发明专利

JP2010024467A Welded joint having excellent fatigue property 有权
标题翻译：焊接接头具有优异的疲劳性能
公开(公告)号：JP2010024467A
公开(公告)日：2010-02-04
申请号：JP2008183635
申请日：2008-07-15
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： YODA NOBORU , FUJIWARA TOMOYA , KAWABATA TOMOYA
IPC分类号： C22C38/00 , C21D8/02 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a welded joint which has excellent fatigue properties in a super-long service life region.
SOLUTION: The welded joint uses a steel having a metallic structure mainly composed of ferrite and bainite, wherein, the area ratio of pearlite is ≤10%, and also, the half-value width of X-ray diffraction intensity from the (110) face is ≥0.13 degrees, and further having a chemical composition satisfying the following inequalities (a) and (b), and a difference between the maximum value and the minimum value of the hardness value in the boundary between a weld metal and a welded heat affected zone in the surface of the welded joint is ≤50Hv. As the chemical composition of the steel, the one comprising, by mass, 0.01 to 0.10% C, 0.03 to 0.6% Si, 0.5 to 2.0% Mn, >0.005 to 0.10% Sol.Al and 0.0005 to 0.02% N is preferable, and further, the steel may comprise one or more kinds selected from B, Nb, Ti, V, Cu, Ni, Cr, Mo, Ca, Mg, Ce, Y and Nd: (a) 6≤20C+5Si+10Mn≤30 ; and (b) 0.01≤C/{Mn+(1/10)Cu+(1/2)Ni+(1/4)Cr+Mo+20Nb+10Ti+5V}≤0.10 ; wherein, the symbols of elements in the inequalities (a) and (b) denote the contents (mass%) of the respective elements, and are calculated as zero in the case they are not contained.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供在超长使用寿命区域中具有优异的疲劳特性的焊接接头。解决方案：焊接接头使用主要由铁素体和贝氏体组成的金属结构的钢，其中珠光体的面积比例≤10％，X射线衍射强度的半值宽度（110）面为≥0.13度，并且还具有满足以下不等式（a）和（b）的化学组成，以及焊缝金属与焊接金属的边界中的硬度值的最大值和最小值之间的差值焊接接头表面的焊接热影响区≤50Hv。作为钢的化学组成，优选含有0.01〜0.10％的C，0.03〜0.6％的Si，0.5〜2.0％的Mn，0.005〜0.10％的Sol.Al和0.0005〜0.02％的N，此外，钢可以包含选自B，Nb，Ti，V，Cu，Ni，Cr，Mo，Ca，Mg，Ce，Y和Nd中的一种或多种：（a）6≤20C+ 5Si +10Mn≤ 30; 和（b）0.01≤C/äMn+（1/10）Cu +（1/2）Ni +（1/4）Cr + Mo + 20Nb + 10Ti + 5V}≤0.10; 其中，不等式（a）和（b）中的元素的符号表示各元素的含量（质量％），并且在不包含它们的情况下计算为零。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2009041073A High-tensile strength steel weld joint having excellent resistivity to generation of ductile crack from weld zone, and method for producing the same 审中-公开
标题翻译：具有优异电阻率的焊接接头，用于生产焊接区域的导电裂纹的高强度钢焊接接头及其制造方法
公开(公告)号：JP2009041073A
公开(公告)日：2009-02-26
申请号：JP2007207493
申请日：2007-08-09
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： KAWABATA TOMOYA , YODA NOBORU , ARIMOCHI KAZUSHIGE , TONEGAWA TARO
IPC分类号： C22C38/00 , B23K9/23 , B23K103/04 , C21D8/02 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high-tensile strength steel weld joint having excellent resistivity to the generation of ductile cracks from a weld zone, particularly, from a weld toe, and suitably used for the field of ground structures such as bridges and buildings subjected to an earthquake load.
SOLUTION: The high-tensile strength steel weld zone having excellent resistivity to the generation of ductile cracks from a weld zone is obtained by subjecting a steel member having a composition comprising 0.01 to 0.12% C, 0.01 to 0.5% Si, 0.4 to 2% Mn, ≤0.05% P, ≤0.003% S, 0.002 to 0.05% Al and 0.0030 to 0.01% N, and the balance Fe with impurities, and satisfying 0.05≤(Si/30)+(Mn/20)+(Cu/20)+(Ni/60)+(Cr/20)+(Mo/15)+(V/10)≤0.15 as a base material to arc welding, and, in the microstructure on the side of the heat-affected zone in a weld toe, the fractions of ferrite and bainite are 10 to 40% and ≥50%, respectively.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有优异的电阻率的高抗拉强度钢焊接接头，用于从焊接区，特别是焊接脚趾产生延性裂纹，适用于地面结构领域，例如桥梁和建筑受到地震荷载。解决方案：通过对含有0.01〜0.12％C，0.01〜0.5％Si，0.4的组成的钢构件进行熔融区产生延性裂纹的电阻率优异的高强度钢焊接区至0.2％Mn，≤0.05％P，≤0.003％S，0.002〜0.05％Al和0.0030〜0.01％N，余量为Fe与杂质，满足0.05≤（Si / 30）+（Mn / 20）+ （Cu / 20）+（Ni / 60）+（Cr / 20）+（Mo / 15）+（V / 10）≤0.15作为电弧焊接的基材，焊接趾部的受影响区域，铁素体和贝氏体的分数分别为10〜40％和≥50％。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2008202119A High-tensile steel having excellent ductile crack initiation resistance 有权
标题翻译：具有优异的耐腐蚀性抗裂性的高强度钢
公开(公告)号：JP2008202119A
公开(公告)日：2008-09-04
申请号：JP2007041618
申请日：2007-02-22
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： KAWABATA TOMOYA , YODA NOBORU , FUJIWARA TOMOYA , ARIMOCHI KAZUSHIGE , TONEGAWA TARO
IPC分类号： C22C38/00 , B21B45/08 , C21D8/02 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a whose production on an industrial scale is facilitated, and having excellent ductile crack initiation resistance from the surface part, and suitably used for a ground structure field such as bridges and buildings applied with an earthquake load.
SOLUTION: The high-tensile steel having excellent ductile crack initiation resistance has a composition containing 0.01 to 0.12% C, 0.05 to 0.5% Si, 0.4 to 2% Mn, ≤0.05% P, ≤0.003% S, 0.002 to 0.05% Al and 0.0015 to 0.01% N, and the balance Fe with impurities, and satisfying (Si/30)+(Mn/20)+(Cu/20)+(Ni/60)+(Cr/20)+(Mo/15)+(V/10)+5B≥0.08%, and, in the microstructure of the surface part in the steel, the fraction of ferrite is 10 to 40%, the fraction of bainite is ≥50%, and the average grain diameter is ≤5 μm.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供其在工业规模上的生产方便，并且具有从表面部分具有优异的延展性抗开裂性，并且适用于诸如桥梁和建筑物施加地震载荷的地面结构领域。＆lt; P＆gt;解决方案：具有优异的延展性开裂起始电阻的高强度钢具有含有0.01〜0.12％C，0.05〜0.5％Si，0.4〜2％Mn，≤0.05％P，≤0.003％S，0.002〜满足（Si / 30）+（Mn / 20）+（Cu / 20）+（Ni / 60）+（Cr / 20）+（Ni / 60）+ Mo / 15）+（V / 10）+5B≥0.08％，在钢的表面部分的微结构中，铁素体的分数为10〜40％，贝氏体的比例≥50％平均粒径≤5μm。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2007262518A Fatigue crack resistant steel sheet for welding having excellent joint fatigue strength 有权
标题翻译：用于具有优异联合疲劳强度的焊接用耐火耐火钢板
公开(公告)号：JP2007262518A
公开(公告)日：2007-10-11
申请号：JP2006090893
申请日：2006-03-29
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： YODA NOBORU , OKAGUCHI HIDEJI , KAWABATA TOMOYA , SHINTAKU YOSHIAKI , KAWAMOTO MASAYUKI , SETA ICHIRO , ARIMOCHI KAZUSHIGE
IPC分类号： C22C38/00 , B22D11/00 , B22D11/108 , C21D8/02 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a fatigue crack resistant steel sheet for welding having excellent fatigue strength in a welded joint.
SOLUTION: The fatigue crack resistant steel sheet for welding has a composition comprising, by mass, 0.01 to 0.10% C, 0.04 to 0.6% Si, 0.50 to 2.0% Mn, ≤0.006% P, ≤0.003% S, 0.003 to 0.06% Al, 0.001 to 0.10% Ti and 0.0020 to 0.0120% N, and the balance Fe with impurities wherein the content of B is ≤0.0007% and the content of O (oxygen) is ≤0.0030%, and in which the value of a carbon equivalent (Ceq) is 0.28 to 0.65%, and the cleanliness defined by formula; (the cleanliness of A based inclusions)×1+(the cleanliness of B based inclusions)×3+(the cleanliness of C based inclusions)×1.5 in a region to a depth of 2 mm in the sheet thickness direction from the surface of the steel sheet is 0.005 to 0.1%. The steel sheet may further comprise one or more kinds selected from ≤1.5% Cu, ≤1.5% Ni, ≤1.2% Cr, ≤1.0% Mo, ≤0.1% V, ≤0.10% Nb, ≤0.0010% REM and ≤0.0010% Mg.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于焊接的耐疲劳裂纹钢板，其焊接接头具有优异的疲劳强度。解决方案：用于焊接的耐疲劳裂纹钢板的组成包括质量为0.01至0.10％的C，0.04至0.6％的Si，0.50至2.0％的Mn，≤0.006％的P，≤0.003％的S，0.003 至0.06％的Al，0.001至0.10％的Ti和0.0020至0.0120％的N，余量为Fe与杂质的含量，其中B的含量≤0.0007％，O（氧）的含量≤0.0030％，其中值的碳当量（Ceq）为0.28〜0.65％，由式定义的清洁度; （A系夹杂物的清洁度）×1 +（B系夹杂物的清洁度）×3 +（C系夹杂物的清洁度）×1.5在距板材厚度方向的厚度方向上的深度为2mm的区域钢板为0.005〜0.1％。钢板还可以包括选自≤1.5％Cu，≤1.5％Ni，≤1.2％Cr，≤1.0％Mo，≤0.1％V，≤0.10％Nb，≤0.0010％REM和≤0.0010％中的一种或多种镁。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2007182611A Fatigue crack resistant steel plate for welding having excellent fatigue strength of joint 有权
标题翻译：具有良好疲劳强度的焊接用耐火耐火钢板
公开(公告)号：JP2007182611A
公开(公告)日：2007-07-19
申请号：JP2006001804
申请日：2006-01-06
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： YODA NOBORU , OKAGUCHI HIDEJI , KAWABATA TOMOYA , SHINTAKU YOSHIAKI , KAWAMOTO MASAYUKI , SETA ICHIRO , ARIMOCHI KAZUSHIGE
IPC分类号： C22C38/00 , C21D8/02 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a fatigue crack resistant steel plate for welding having excellent fatigue strength of a welded joint.
SOLUTION: The fatigue crack resistant steel plate for welding is characterized in that: it has a composition which consists of, by mass, 0.01 to 0.10% C, 0.04 to 0.6% Si, 0.50 to 2.0% Mn, ≤0.006% P, ≤0.003% S, 0.003 to 0.06% Al, 0.001 to 0.10% Ti and the balance Fe with impurities and in which B and O (oxygen) as the impurities are ≤0.0007% and ≤0.0030%, respectively, and the value of carbon equivalent (Ceq) ranges from 0.28 to 0.65%; and a cleanliness defined by expression [(cleanliness of type A inclusions)×1+(cleanliness of type B inclusions)×3+(cleanliness of type C inclusions)×1.5], in the region between the surface of the steel plate and a position at a depth of 2 mm from the surface in a plate-thickness direction, is 0.005 to 0.1%. The steel plate can further contain one or more among ≤1.5% Cu, ≤1.5% Ni, ≤1.2% Cr, ≤1.0% Mo, ≤0.1% V, ≤0.10% Nb, ≤0.0010% REM and ≤0.0010% Mg.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有优异的焊接接头疲劳强度的用于焊接的耐疲劳裂纹钢板。解决方案：用于焊接的耐疲劳裂纹钢板的特征在于：其组成为：质量为0.01〜0.10％的Si，0.04〜0.6％的Si，0.50〜2.0％的Mn，≤0.006％ P，≤0.003％S，0.003〜0.06％的Al，0.001〜0.10％的Ti，余量为Fe的杂质，其中作为杂质的B和O（氧）分别为≤0.0007％和≤0.0030％的碳当量（Ceq）为0.28〜0.65％。在表面[（A型夹杂物的清洁度）×1 +（B型夹杂物的清洁度）×3 +（C型夹杂物的清洁度）×1.5]中定义的清洁度在钢板表面和在板厚方向距离表面2mm的位置的位置为0.005〜0.1％。钢板可以进一步含有一种或多种Cu，≤1.5％Ni，≤1.2％Cr，≤1.0％Mo，≤0.1％V，≤0.10％Nb，≤0.0010％REM和≤0.0010％Mg中的一种或多种。版权所有（C）2007，JPO＆INPIT

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