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1. 发明专利

JP2008240096A High strength welded steel pipe having weld metal excellent in low temperature crack resistance, and its manufacturing method 有权
标题翻译：具有低温耐腐蚀性的焊接金属的高强度焊接钢管及其制造方法
公开(公告)号：JP2008240096A
公开(公告)日：2008-10-09
申请号：JP2007084399
申请日：2007-03-28
申请人： Jfe Steel Kk , Jfeスチール株式会社 , Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： HAYAKAWA NAOYA , SAKAGUCHI SHUICHI , KAWABATA FUMIMARU , OKATSU MITSUHIRO , OTA MAKOTO , NISHIYAMA SHIGEKI , NAGATANI KAORU , ISHIZAKI KEITO
IPC分类号： C22C38/00 , B21C37/08 , B23K9/18 , B23K9/23 , B23K35/30 , B23K101/06 , B23K103/04 , C22C38/58
CPC分类号： C22C38/02 , B23K35/0266 , B23K35/0272 , B23K35/3066 , C22C38/04 , C22C38/08 , C22C38/12 , F16L13/02 , Y10T428/12292 , Y10T428/12965 , Y10T428/12972
摘要： PROBLEM TO BE SOLVED: To provide high strength steel pipe of ≥800 MPa in tensile strength having weld metal excellent in low temperature crack resistance and low-temperature toughness. SOLUTION: The high strength welded steel pipe is manufactured by performing submerged arc welding for every one layer on both sides of an inner surface and an outer surface, in which the tensile strength of the base metal and weld metal of the welded steel pipe are ≥800 MPa and the weld metal contains 0.04 to 0.09 mass% C, 0.32 to 0.50 mass% Si, 1.4 to 2.0 mass% n, COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供具有优异的低温抗裂性和低温韧性的焊接金属的抗张强度≥800MPa的高强度钢管。解决方案：高强度焊接钢管是通过对内表面和外表面两侧的每一层进行浸没电弧焊，其中焊接钢的母材和焊接金属的拉伸强度管子≥800MPa，焊接金属含有C：0.04〜0.09质量％，Si：0.32〜0.50质量％，n：1.4〜2.0质量％，Cu：0.5质量％以下，Ni：0.9〜≤2.2质量％，0.04〜1.5质量％％o，<0.5质量％Cr和<0.2质量％V由余量Fe和不可避免的杂质组成，CS值= 5.1 + 1.4 [Mc] - [Ni] -0.6 [Mn] - 焊接金属部件的36.3 [C]在内表面侧和外表面侧都满足≥0。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2009091653A High strength welded steel pipe for low temperature use having excellent weld heat affected zone toughness, and its production method 有权
标题翻译：高强度焊接钢管用于低温焊接热影响区域的韧性及其生产方法
公开(公告)号：JP2009091653A
公开(公告)日：2009-04-30
申请号：JP2008213867
申请日：2008-08-22
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： SHIMAMURA JUNJI , ISHIKAWA NOBUYUKI , OKATSU MITSUHIRO , ENDO SHIGERU , SHIKAUCHI NOBUO
IPC分类号： C22C38/00 , B21C37/08 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high strength welded steel pipe for low temperature use having excellent weld heat affected zone toughness which has a pipe thickness of ≤50 mm and a tensile strength of 570 to 760 MPa, and is suitable for transport use to natural gas and crude oil, and to provide its production method. SOLUTION: The welded steel pipe has a base metal part whose fundamental componential system is composed of Nb-Ti-B and further having a composition comprising one or more kinds selected from Cu, Ni, Cr, Mo, V, Ca, REM, Zr and Mg, and satisfying 0.12≤P CM ≤0.20, and the balance Fe with inevitable impurities, and, regarding the microstructure of a longitudinal seam weld zone in which an old austenite grain size in the vicinity of a welding line is ≥50 μm, the area ratio of bainite in which carbides essentially consisting of cementite are precipitated within the laths and/or between the laths of bainitic ferrite with the average grain size of ≤5 μm is ≥50%, and the balance insular martensite and/or upper bainite including cementite between the laths or martensite or pearlite or their mixed structure. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供具有优异的焊接热影响区韧性的高强度焊接钢管，其具有≤50mm的管厚度和570〜760MPa的拉伸强度，并且适用于运输用于天然气和原油，并提供其生产方法。焊接钢管具有贱金属部件，其基本成分体系由Nb-Ti-B组成，并且还具有包含选自Cu，Ni，Cr，Mo，V，Ca， REM，Zr和Mg，并且满足0.12≤P CM ≤0.20，余量为Fe与不可避免的杂质，以及关于其中的奥氏体晶粒尺寸焊接线附近的厚度≥50μm，其中主要由渗碳体组成的碳化物的贝氏体在板条之间和/或平均粒径≤5μm的贝氏体铁素体的板条之间沉积的面积比为≥50％以及包含板条或马氏体或珠光体之间的渗碳体的平衡的马氏体和/或上部贝氏体或它们的混合结构。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2008274405A High-strength steel sheet excellent in sr resistant property and deformation performance, and method for manufacturing the same 有权
标题翻译：耐磨性能和变形性能优异的高强度钢板及其制造方法
公开(公告)号：JP2008274405A
公开(公告)日：2008-11-13
申请号：JP2008045456
申请日：2008-02-27
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： SHIMAMURA JUNJI , ISHIKAWA NOBUYUKI , OKATSU MITSUHIRO , SHIKAUCHI NOBUO
IPC分类号： C22C38/00 , B21B3/00 , C21D8/02 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high-strength steel sheet having X100 grade or higher showing excellent SR resistance property and deformation performance and a method for manufacturing the same. SOLUTION: The steel containing, by mass%, 0.03-0.10% C, 0.01-0.5% Si, 1.5-2.5% Mn, 0.1-0.5% Mo, 0.08% or less Al, one or more elements of Ti, Nb, and V and the balance being Fe and unavoidable impurities, and having a PCM value of not less than 0.19 and not more than 0.25, and a P value of 0.20 or more, is heated to 1,100-1,300°C, hot-rolled at a rolling finishing temperature of 750°C or more, then treated with accelerated cooling at a cooling speed of 20°C/s or more to reach not less than 350°C and not more than 550°C, thereafter, reheated to 550-700°C at a temperature increase rate of 0.5°C/s or more. The PCM value is represented by the formula (1): C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5×B and the P value is represented by the formula (2): [Mo]+[Ti]+[Nb]+[V]. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供具有优异的SR电阻特性和变形性能的X100等级或更高等级的高强度钢板及其制造方法。解决方案：以质量％计含有0.03-0.10％C，0.01-0.5％Si，1.5-2.5％Mn，0.1-0.5％Mo，0.08％或更少的Al，一种或多种Ti， Nb和V，余量为Fe和不可避免的杂质，PCM值不小于0.19且不大于0.25，P值为0.20以上，加热至1100〜1300℃，热轧在750℃以上的轧制终轧温度下，以20℃/ s以上的冷却速度进行加速冷却处理，达到350℃以上且550℃以下，再加热至550℃ -700℃，升温速度为0.5℃/ s以上。 PCM值由式（1）表示：C + Si / 30 + Mn / 20 + Cu / 20 + Ni / 60 + Cr / 20 + Mo / 15 + V / 10 + 5×B，P值为由式（2）表示：[Mo] + [Ti] + [Nb] + [V]。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2007270194A Method for producing high-strength steel sheet excellent in sr resistance property 审中-公开
标题翻译：用于生产耐磨性优良的高强度钢板的方法
公开(公告)号：JP2007270194A
公开(公告)日：2007-10-18
申请号：JP2006094886
申请日：2006-03-30
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： SHIMAMURA JUNJI , ISHIKAWA NOBUYUKI , OKATSU MITSUHIRO
IPC分类号： C21D8/02 , B21B3/00 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a method capable of producing a high-strength steel having the high-strength of API X100 grade or above and exhibiting excellent SR resistance property without adding a large quantity of alloy elements. SOLUTION: In this producing method, the steel, which contains, by mass, 0.03-0.07% C, 0.01-0.5% Si, 1.5-2.5% Mn, 0.1-0.5% Mo, ≤0.08% Al and one or more kinds of 0.005-0.035% Ti, 0.005-0.07% Nb, 0.005-0.1% V, and satisfies 9×Ceq+4×P≥4.8, wherein Ceq is the value shown by a prescribed expression and P is the total value of, by atomic%, Mo, Ti, Nb and V, and [C]/([Mo]+[Ti]+[Nb]+[V])=0.6 to 1.7, is hot-rolled by heating , then accelelatively cooled, and thereafter immediately is reheated. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够生产具有API X100等级或更高等级的高强度并且在不添加大量合金元素的情况下表现出优异的SR电阻特性的高强度钢的方法。解决方案：在该制造方法中，将含有0.03-0.07％C，0.01-0.5％Si，1.5-2.5％Mn，0.1-0.5％Mo，≤0.08％Al和1或1％ 0.005-0.035％Ti，0.005-0.07％Nb，0.005-0.1％V，并且满足9×Ceq + 4×P≥4.8，其中Ceq为规定表达式所示的值，P为，原子％，Mo，Ti，Nb和V，[C] /（[Mo] + [Ti] + [Nb] + [V]）= 0.6〜1.7，通过加热进行热轧，然后冷却，然后立即重新加热。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2006183133A Method for producing steel sheet for high strength steam piping having excellent weld heat affected zone toughness 有权
标题翻译：用于生产具有优异焊接热影响区域的高强度蒸汽管道的钢板的方法
公开(公告)号：JP2006183133A
公开(公告)日：2006-07-13
申请号：JP2005284198
申请日：2005-09-29
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： MURAOKA RYUJI , OKATSU MITSUHIRO , ENDO SHIGERU
IPC分类号： C21D8/02 , C21D8/10 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a steel sheet having excellent weld heat affected zone toughness which has a yield strength of ≥550 MPa in a medium temperature region, and is suitable for a high strength welded steel pipe for steam piping.
SOLUTION: A steel having a composition comprising, by mass, 0.05 to 0.09% C, 0.05 to 0.20% Si, 1.5 to 2.0% Mn, ≤0.020% P, ≤0.002% S, 0.05 to 0.3% Mo, 0.005 to 0.05% Nb, 0.005 to 0.02% Ti and 0.01 to 0.04% Al, satisfying Ti/N of 2.0 to 4.0, and, if required, comprising one or more kinds selected from Cu, Ni, Cr, V, Ca and rare earth metals, and the balance Fe with inevitable impurities is heated at 1,000 to 1,200°C, is thereafter hot-rolled at a cumulative draft of ≥50% in ≤900°C and also at a rolling finishing temperature of ≤850°C, and is subsequently subjected to accelerated cooling to 400 to 550°C at a cooling rate of ≥5°C/s.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种在中温区域具有优异的焊接热影响区韧性的钢板的屈服强度≥550MPa的钢板的制造方法，适用于高强度焊接钢管蒸汽管道。解决方案：一种组合物，其组成包括：0.05〜0.09％的C，0.05〜0.20％的Si，1.5〜2.0％的Mn，≤0.020％的P，≤0.002％的S，0.05〜0.3％的Mo，0.005 至0.05％的Nb，0.005〜0.02％的Ti和0.01〜0.04％的Al，满足Ti / N为2.0〜4.0，如果需要，还可以含有选自Cu，Ni，Cr，V，Ca和稀土中的一种或多种金属，余量为不可避免的杂质的Fe在1000〜1200℃下加热，然后以≤900℃，轧制终轧温度≤850℃，以≥50％的累积牵伸热轧，随后以≥5℃/ s的冷却速度加速冷却至400-550℃。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2005060839A Steel pipe with low yield ratio, high strength, high toughness and superior strain age-hardening resistance, and manufacturing method therefor 有权
标题翻译：具有低屈服强度，高强度，高韧性和超级耐老化耐久性的钢管及其制造方法
公开(公告)号：JP2005060839A
公开(公告)日：2005-03-10
申请号：JP2004225683
申请日：2004-08-02
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： SHINGU TOYOHISA , ENDO SHIGERU , ISHIKAWA NOBUYUKI , OKATSU MITSUHIRO
IPC分类号： B21B1/38 , B21B3/00 , B21C37/08 , C21D8/02 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel pipe with a low yield ratio, high strength, high toughness and superior strain age-hardening resistance, which is manufactured at high manufacturing efficiency and at a low cost.
SOLUTION: The steel pipe with the low yield ratio, high strength, high toughness and superior strain age-hardening resistance comprises, by mass%, 0.03-0.1% C, 0.01-0.5% Si, 1.2-2.5% Mn, 0.05-0.4% Mo, 0.005-0.04% Ti, 0.08% or less Al, while controlling a ratio, by atom%, of a C content to the total content of Ti and Mo, namely C/(Mo+Ti) to 1.2-3, and the balance substantially Fe; and has a metallographic structure of a three-phase structure consisting substantially of ferrite, bainite and island martensite, in which an area fraction of the island martensite is 3 to 20%.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：待解决的问题：为了提供以高制造效率和低成本制造的低屈服比，高强度，高韧性和优异的应变时效硬化性的钢管。
解决方案：低屈服比，高强度，高韧性和优异的应变时效硬化性能的钢管以质量％计含有0.03-0.1％C，0.01-0.5％Si，1.2-2.5％Mn， 0.05〜0.4％的Mo，0.005〜0.04％的Ti，0.08％以下的Al，同时控制C含量与Ti和Mo的总含量（即C /（Mo + Ti））的比（原子％）为1.2 -3，余量基本上为Fe; 并且具有基本上由铁素体，贝氏体和岛状马氏体构成的三相结构的金相组织，其中岛状马氏体的面积分数为3〜20％。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2004143509A High strength, high toughness, low yield ratio steel tube stock, and production method therefor 有权
公开(公告)号：JP2004143509A
公开(公告)日：2004-05-20
申请号：JP2002308450
申请日：2002-10-23
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： OKATSU MITSUHIRO
IPC分类号： C21D8/02 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high strength, high toughness, low yield ratio steel tube stock in which high strength is attained while satisfying high absorbed energy, and further, a low yield ratio satisfying YR of B phase of ≥70 vol.% and an αq phase of ≥10 vol.%.
COPYRIGHT: (C)2004,JPO

8. 发明专利

JP2004076101A High-strength high-toughness steel pipe material excellent in weldability and its production method 有权
标题翻译：高强度高韧性钢管材料优良的焊接性及其生产方法
公开(公告)号：JP2004076101A
公开(公告)日：2004-03-11
申请号：JP2002238036
申请日：2002-08-19
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： OKATSU MITSUHIRO
IPC分类号： C21D9/46 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel pipe material which attains a high strength while satisfying a high absorption energy and is not hardened even when influenced by welding heat.
SOLUTION: The high-strength high-toughness steel pipe material is a steel plate comprising 0.005-0.020 mass% C, 0.05-1.0 mass% Si, 1.0-4.0 mass% Mn, 0.01-0.10 mass% Al, 0.01-0.50 mass% Nb, 0.005-0.10 mass% Ti, 0.0010-0.010 mass% B, 0.003 mass% or lower S, and the balance being Fe and unavoidable impurities, provided that X1 defined by equation (1): X1 = 970-130*Mn-1450*Nb is 400-650 and that the microstructure of the steel plate contains a bainite phase in the form of α°B in a content of at least 70 vol%.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种在满足高吸收能量的同时获得高强度并且即使在受到焊接热影响的情况下也不会硬化的钢管材料。解决方案：高强度高韧性钢管材料是含有0.005-0.020质量％C，0.05-1.0质量％Si，1.0-4.0质量％Mn，0.01-0.10质量％Al，0.01- 0.50质量％Nb，0.005-0.10质量％Ti，0.0010-0.010质量％B，0.003质量％以下S，余量为Fe和不可避免的杂质，条件是由式（1）定义的X1：X1 = 970-130 * Mn-1450 * Nb为400-650，钢板的组织为含有至少70体积％的α°B形式的贝氏体相。版权所有（C）2004，JPO

9. 发明专利

JP2009091633A High strength steel excellent in deformable performance, and its producing method 有权
标题翻译：高强度钢可变性能及其生产方法
公开(公告)号：JP2009091633A
公开(公告)日：2009-04-30
申请号：JP2007264349
申请日：2007-10-10
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： OKATSU MITSUHIRO , ISHIKAWA NOBUYUKI , SHIMAMURA JUNJI , SHIKAUCHI NOBUO
IPC分类号： C22C38/00 , C21D8/02 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet which is used for high strength line-pipe of >750 MPa tensile strength, has ≤85% yield ratio and ≥4% uniform elongation, and is excellent in a deformability, and to provide its producing method.
SOLUTION: This steel sheet is composed of island martensite having ≤3.0 average aspect ratio in micro-structure and bainite. The island martensite has 5-15% area ratio. The steel having the specific component composition is re-heated to 1,000-1,200°C, and then is rolled by ≥80% accumulated rolling-reduction ratio in the temperature zone of ≤950°C and by ≥50% accumulated rolling-reduction ratio in the temperature zone of ≤800°C, thereafter the steel is accelerated-cooled at 20-80°C/s cooling rate from the temperature zone of Ar
3 or higher, and the cooling is stopped at 300-600°C, then immediately, the steel is re-heated to 630-700°C and is air-cooled to the room temperature.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于具有> 750MPa拉伸强度的高强度线管的钢板，屈服比≤85％，伸长率≥4％，变形性优异，提供其生产方法。
解决方案：该钢板由微结构和贝氏体中平均长径比≤3.0的岛状马氏体组成。岛马氏体面积比为5-15％。将具有特定成分组成的钢再加热至1000-1200℃，然后在≤950℃的温度区域和≥50％的累积压下率下滚动≥80％的累积压下率在≤800℃的温度范围内，从Ar 3 以上的温度区以20〜80℃/ s的冷却速度对钢进行加速冷却，冷却停止在 300-600℃，然后马上将钢再加热至630-700℃，风冷至室温。版权所有（C）2009，JPO＆INPIT

10. 发明专利

JP2009057629A High strength steel pipe for low temperature use having excellent buckling resistance and weld heat-affected zone toughness, and method for producing the same 有权
标题翻译：用于具有优异的耐开挖强度和焊接热影响区域的低温用低强度钢管及其制造方法
公开(公告)号：JP2009057629A
公开(公告)日：2009-03-19
申请号：JP2008080999
申请日：2008-03-26
申请人： Jfe Steel Kk , Jfeスチール株式会社
发明人： SHIMAMURA JUNJI , ISHIKAWA NOBUYUKI , OKATSU MITSUHIRO , ENDO SHIGERU , SHIKAUCHI NOBUO
IPC分类号： C22C38/00 , B23K9/025 , B23K9/23 , B23K35/30 , B23K101/06 , B23K103/04 , C21D8/02 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel pipe having a high strength of from X80 to X100 grade in the API standard and having excellent buckling resistance and weld heat-affected zone toughness, and to provide a method for producing the same.
SOLUTION: A base material of the steel pipe comprises, by mass%, 0.03-0.12% C, 0.01-0.5% Si, 1.5-3.0% Mn, P, S, 0.01-0.08% Al, 0.005-0.08% Nb, 0.005-0.025% Ti, 0.001-0.010% N, 0.005% or less O, and 0.0003-0.0020% B, and further comprises one or more of Cu, Ni, Cr, Mo, and V, satisfies the formula: 0.16≤P
CM ≤0.25, comprises the balance being Fe and inevitable impurities, has a tensile strength of 620-930 MPa, has a uniform elongation of 5% or more, and a yield ratio of 85% or less. The component composition of seam weld metal is specified. A microstructure in a seam weld heat affected zone having a former austenite grain size of 50 μm or more is a mixed structure comprising lower bainite or lower bainite having an area rate of at least 50% or more and upper bainite and/or martensite.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种在API标准中具有X80至X100级高强度并且具有优异的抗弯曲性和焊接热影响区韧性的钢管，并提供其制造方法。钢管的基材以质量％计含有0.03-0.12％C，0.01-0.5％Si，1.5-3.0％Mn，P，S，0.01-0.08％Al，0.005-0.08％ Nb，0.005〜0.025％Ti，0.001-0.010％N，0.005％以下O，0.0003〜0.0020％B，进一步含有Cu，Ni，Cr，Mo和V中的一种或多种，满足式0.16 ≤P≤0.25，余量为Fe和不可避免的杂质，拉伸强度为620-930MPa，均匀伸长率为5％以上，屈服比为85％或减。规定了焊缝金属的组成成分。前奥氏体晶粒尺寸为50μm以上的缝焊热影响区域的微结构是包含面积率为50％以上的下贝氏体或下贝氏体和上贝氏体和/或马氏体的混合结构。版权所有（C）2009，JPO＆INPIT

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