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    • 4. 发明专利
    • Structure of welded joint of steel
    • 焊接接头结构
    • JP2011245522A
    • 2011-12-08
    • JP2010121935
    • 2010-05-27
    • Sumitomo Metal Ind Ltd住友金属工業株式会社
    • HIRAYAMA HIROMIFUKUDA KOJIKAWABATA TOMOYA
    • B23K9/23B23K9/00B23K9/028B23K103/04
    • PROBLEM TO BE SOLVED: To provide the structure of the welded joint of steel having higher strength than the strength of the joint which is determined from the material strength of a weld zone, wherein the applicable to job-site execution is possible and there is no need for special welding technique and technical skill, by providing a soft joint which is low in cost and is mitigated in conditions of post heating control, welding heat input and inter-pass temperature, mainly about a welded joint part of ultra-high-strength steel.SOLUTION: The structure 1 of the welded joint includes: first steel 2; second steel 3; the joint weld zone 4; and a first reinforcing member 5 and second reinforcing member 6, for reinforcing the joint weld zone 4. The material strength of weld metal 7 in the joint weld zone 4 is smaller than any material strength of the first steel 2 and the second steel 3, the first reinforcing member 5 is brought into contact with and joined with the surface 4a on one side of the joint weld zone 4 through the weld metal 7, and also the second reinforcing member 6 is joined with the surface 4b of the other side of the joint weld zone 4. The material strength of the first reinforcing member 5, the second reinforcing member 6 and the material strength of the weld metal 7 are smaller than any material strength of the first steel 2 and the second steel 3.
    • 要解决的问题:提供具有比由焊接区的材料强度确定的接头强度更高的强度的钢的焊接接头的结构,其中适用于作业现场执行是可能的,并且 不需要特殊的焊接技术和技术技能,通过提供成本低且在后加热控制,焊接热输入和通过温度的条件下减轻的软接头,主要涉及超临界焊接接头部分, 高强度钢。 解决方案:焊接接头的结构1包括:第一钢2; 第二钢3; 焊接区4; 以及用于加强接合焊接区域4的第一加强构件5和第二加强构件6.焊接区域4中的焊接金属7的材料强度小于第一钢2和第二钢3的任何材料强度, 第一加强构件5通过焊接金属7与接合焊接区4的一侧的表面4a接触并与其接合,并且第二加强构件6与第二加强构件5的另一侧的表面4b接合 接合焊接区域4.第一加强构件5,第二加强构件6的材料强度和焊接金属7的材料强度小于第一钢2和第二钢3的任何材料强度。 (C)2012,JPO&INPIT
    • 6. 发明专利
    • Thick steel plate and method for producing the same
    • 厚钢板及其制造方法
    • JP2010174357A
    • 2010-08-12
    • JP2009021094
    • 2009-02-02
    • Sumitomo Metal Ind Ltd住友金属工業株式会社
    • KUBO SATOSHIKAWABATA TOMOYAOKUBO TAKESHISAKAIBORI HIDEO
    • C22C38/00C21D8/02C22C38/12C22C38/58
    • PROBLEM TO BE SOLVED: To provide a thick steel plate in which toughness in the plate thickness direction is satisfactory, and jumping energy cost is suppressed, and which can be inexpensively produced. SOLUTION: The thick steel plate has a composition comprising, by mass, 0.01 to 0.12% C, ≤0.50% Si, 0.4 to 2.0% Mn, ≤0.05% P, ≤0.008% S, 0.003 to 0.10% Nb, 0.002 to 0.05% Al and ≤0.010% N, and the balance Fe with impurities, and in which the value of [(9.238×C 0.5 )×(1+0.64×Si)×(1+4.1×Mn)×(1+0.27×Cu)×(1+0.5×Ni)×(1+2.33×Cr)×(1+3.14×Mo)] satisfies ≤25. Further, the ratio of ferrite having the average crystal grain size of >3 to 20 μm and the average aspect ratio of ≤4 occupied in a microstructure is ≥80%. COPYRIGHT: (C)2010,JPO&INPIT
    • 解决的问题:为了提供板厚方向的韧性良好的厚钢板,能够降低跳跃能量成本,能够廉价地制造。 解决方案:厚钢板具有质量分数为0.01〜0.12%的C,≤0.50%的Si,0.4〜2.0%的Mn,≤0.05%的P,≤0.008%的S,0.003〜0.10%的Nb, 0.002〜0.05%的Al和≤0.010%的N,余量为Fe与杂质,其中[(9.238×C 0.5 )×(1 + 0.64×Si)×(1+ 4.1×Mn)×(1 + 0.27×Cu)×(1 + 0.5×Ni)×(1 + 2.33×Cr)×(1 + 3.14×Mo)]满足≤25。 此外,平均结晶粒径> 3〜20μm的铁素体与微观结构中所占的平均纵横比≤4的比例≥80%。 版权所有(C)2010,JPO&INPIT
    • 8. 发明专利
    • Steel sheet less in welding deformation
    • 焊接变形中的钢板缺陷
    • JP2010047815A
    • 2010-03-04
    • JP2008214998
    • 2008-08-25
    • Sumitomo Metal Ind Ltd住友金属工業株式会社
    • KAWABATA TOMOYANAKAMURA HIROSHIARIMOCHI KAZUSHIGE
    • C22C38/00C21D8/02C22C38/38C22C38/58
    • PROBLEM TO BE SOLVED: To provide a steel sheet capable of inexpensvely and securely suppressing welding deformation in a fillet welding. SOLUTION: The steel sheet having reduced welding deformation has a chemical composition containing, by mass, 0.02 to 0.25% C, 0.01 to 0.7% Si, 0.3 to 2% Mn, ≤0.05% P, ≤0.008% S, 1 to 2.5% Cr, ≤0.05% Mo, 0.005 to 0.1% Nb, 0.003 to 0.1% Al and ≤0.01% N, and the balance Fe with impurities, and has a metallic structure composed of a ferritic structure of 10 to 60% and a bainitic structure and/or a martensitic structure of 40 to 90%, and in which the average grain size of the ferritic structure is ≤30 μm and the ratio between the hardness of the bainitic structure and/or martensitic structure and the hardness of the ferritic structure is ≥1.5. The steel sheet may further comprise one or more kinds selected from Ti, Cu, Ni, V, B, Zr, Ca, Mg and rare earth metals. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种能够廉价且可靠地抑制焊接中的焊接变形的钢板。 解决方案:具有减小的焊接变形的钢板具有以质量计含有0.02〜0.25%的C,0.01〜0.7%的Si,0.3〜2%的Mn,≤0.05%的P,≤0.008%的S,1 至2.5%Cr,≤0.05%Mo,0.005-0.1%Nb,0.003-0.1%Al和≤0.01%N,余量为Fe与杂质,并且具有由10%至60%的铁素体组成的金属结构和 贝氏体组织和/或马氏体组织为40〜90%,其中铁素体组织的平均粒径≤30μm,贝氏体组织和/或马氏体组织的硬度与硬度之比 铁素体结构≥1.5。 钢板还可以包含选自Ti,Cu,Ni,V,B,Zr,Ca,Mg和稀土金属中的一种或多种。 版权所有(C)2010,JPO&INPIT
    • 9. 发明专利
    • High tensile steel for high heat input welding, and weld metal
    • 高强度输入焊接用高强度钢和焊接金属
    • JP2005171300A
    • 2005-06-30
    • JP2003410621
    • 2003-12-09
    • Sumitomo Metal Ind Ltd住友金属工業株式会社
    • KAWABATA TOMOYAFUJIWARA TOMOYANAKAMURA HIROSHIOKAGUCHI HIDEJIARIMOCHI KAZUSHIGEKAMO TAKAHIRO
    • B23K9/23B23K9/00B23K35/30C22C38/00C22C38/16C22C38/58
    • PROBLEM TO BE SOLVED: To provide high tensile steel in which impact value at -56°C is ≥80 J in a HAZ (heat affected zone) and is ≥50 J in a weld metal zone even if high heat input submerge arc welding of ≥150 kJ/cm is performed, and to provide a weld metal.
      SOLUTION: The high tensile strength steel has a composition comprising ≤0.07% C, ≤0.30% Si, 1.0 to 2.0% Mn, 0.04 to 0.10% sol.Al, 0.0020 to 0.010% N, 0.005 to 0.020% Ti and 0.0005 to 0.005% B, and the balance Fe with inevitable impurities, and in which the value of ARM expressed by formula (1) is 40 to 80: ARM=197-1,457C-1,140sol.Al+11,850N-316(Pcm-C) (1). The weld metal has a composition comprising ≤0.12% C, ≤0.30% Si, 1.0 to 2.0% Mn, 0.01 to 0.05% total Al, 0.0020 to 0.010% N, 0.01 to 0.04% O, 0.005 to 0.020% Ti and 0.002 to 0.008% B, and in which the value of ARW expressed by formula (2) is ≥50: ARW=145×B/N+142×f(Al/O)-140 (2).
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供在HAZ(热影响区)中-56℃下的冲击值≥80J的高强度钢,并且在焊接金属区域中≥50J,即使高热输入淹没 进行≥150kJ/ cm的电弧焊接,并提供焊接金属。 解决方案:高拉伸强度钢具有包括≤0.07%C,≤0.30%Si,1.0-2.0%Mn,0.04-0.10%sol.Al,0.0020-0.010%N,0.005-0.020%Ti和 0.0005〜0.005%B,余量为不可避免的杂质,其中由式(1)表示的ARM值为40〜80:ARM = 197-1477-11140溶胶.Al + 11,850N-316(Pcm -C)(1)。 焊接金属的组成包括≤0.12%C,≤0.30%Si,1.0-2.0%Mn,0.01-0.05%总Al,0.0020-0.010%N,0.01-0.04%O,0.005-0.020%Ti和0.002- 0.008%B,其中由式(2)表示的ARW的值为≥50:ARW = 145×B / N + 142×f(Al / O)-140(2)。 版权所有(C)2005,JPO&NCIPI
    • 10. 发明专利
    • Method for designing steel component of thick steel plate
    • 钢板钢组件的设计方法
    • JP2011052282A
    • 2011-03-17
    • JP2009202748
    • 2009-09-02
    • Sumitomo Metal Ind Ltd住友金属工業株式会社
    • OKUBO TAKESHISAKAIBORI HIDEOKAWABATA TOMOYAKUBO SATOSHISUMIYA YASUNORI
    • C21D8/02C22C38/00C22C38/48
    • PROBLEM TO BE SOLVED: To provide a method for designing a steel component when manufacturing a thick steel plate wherein the slab heating temperature during the manufacture is ≤1,000°C.
      SOLUTION: The steel composition of a thick steel plate to be manufactured at the slab heating temperature of >1,000°C is defined as a basic composition, and based on the basic composition the Nb content is reduced, and the content of at least one kind out of Cu, Ni, Cr, Mo and V is increased. Alternatively, the steel composition of the thick steel plate to be manufactured at the slab heating temperature of >1,000°C is defined as the basic composition, and based on the basic composition, the Nb content is reduced and the carbon equivalent Ceq expressed by the formula (1) Ceq=C+Si/24+Mn/6+Ni/40+Cr/5+Mo/4+V/14 is increased.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种在制造制造期间的板坯加热温度≤1,000℃的厚钢板的制造中设计钢部件的方法。 解决方案:将在板坯加热温度> 1000℃下制造的厚钢板的钢组成定义为碱性组成,并且基于Nb的含量降低的基本组成, Cu,Ni,Cr,Mo和V中的至少一种增加。 或者,将在板坯加热温度> 1000℃下制造的厚钢板的钢组成定义为碱性组成,并且基于碱性组成,Nb含量降低,并且由 式(1)Ceq = C + Si / 24 + Mn / 6 + Ni / 40 + Cr / 5 + Mo / 4 + V / 14增加。 版权所有(C)2011,JPO&INPIT