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1. 发明专利

JP2009228099A Uoe steel pipe for line pipe, and method for manufacturing the same 审中-公开
标题翻译： UOE管线管线及其制造方法
公开(公告)号：JP2009228099A
公开(公告)日：2009-10-08
申请号：JP2008077985
申请日：2008-03-25
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： MINATO IZURU , TAKAHASHI NOBUAKI , YAMAMOTO AKIO
IPC分类号： C22C38/00 , B21B1/26 , B21B3/00 , B21C37/08 , C21D8/10 , C21D9/08 , C21D9/50 , C22C38/58
CPC分类号： B21C37/0815 , C21D7/12 , C21D8/0226 , C21D8/10 , C21D9/08 , C21D2211/002 , C21D2211/004 , C21D2211/005 , C21D2211/008 , C22C38/02 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high-strength UOE steel pipe having excellent earthquake resistance.
SOLUTION: The high-strength UOE steel pipe for line pipes has a metal structure having a steel composition containing ≥0.03 to ≤1.20% C, ≥0.5 to ≤0.50% Si, ≥1.50 to ≤2.2% Mn, ≤0.025% P, ≤0.02% S, ≤1.0% Cu, ≤1.0% Cr, ≤2.0% Ni, ≤1.0% Mo, ≤0.1% Nb, ≤0.1% V, ≤0.025% Ti, ≤0.06% Al, ≤0.005% N, and ≤0.0050% Ca, having Ti/N ≥40, having a steel composition consisting of the balance Fe and inevitable impurities, and has a metal structure composed of ferrite and bainite, and has a metal structure composed of ferrite, bainite and martensite.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供具有优异耐震性的高强度UOE钢管。
解决方案：管线管用高强度UOE钢管具有金属结构，钢组成含有≥0.03〜≤1.20％C，≥0.5〜≤0.50％Si，≥1.50〜≤2.2％Mn，≤0.025 ％P，≤0.02％S，≤1.0％Cu，≤1.0％Cr，≤2.0％Ni，≤1.0％Mo，≤0.1％Nb，≤0.1％V，≤0.025％Ti，≤0.06％Al，≤0.005 ％N，≤0.0050％Ca，Ti /N≥40，具有由Fe和不可避免的余量组成的钢组成，并且具有由铁素体和贝氏体组成的金属结构，并且具有由铁素体，贝氏体组成的金属结构和马氏体。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2008007841A Continuously cast ingot for thick steel plate, its manufacturing method, and thick steel plate 有权
标题翻译：连续铸造厚板，其制造方法和厚钢板
公开(公告)号：JP2008007841A
公开(公告)日：2008-01-17
申请号：JP2006181727
申请日：2006-06-30
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： KATO TORU , YAMANAKA AKIHIRO , TAKAHASHI NOBUAKI
IPC分类号： C22C38/00 , B21B3/00 , B22D11/00 , B22D11/20 , C21D8/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a continuously cast ingot and a thick steel plate containing Nb and Ti combinedly and having such a superior hydrogen-induced crack (HIC) resistance that cracking area ratios (CAR) in HIC test is 4% or less.
SOLUTION: The continuously cast ingot and the thick steel plate comprises 0.03-0.10% C, 0.05-0.4% Si, 0.8-1.8% Mn, 0.010% or less P, 0.002% or less S, 0.01-0.10% Nb, 0.005-0.03% Ti, 0.005-0.06% Al, 0.0005-0.0060% Ca, 0.0015-0.007% N and the balance being Fe with impurities; have a chemical composition satisfying an inequality of 1.48-1.5×Si-14.3×Ti-73×N>0.72; and further, in the central segregation parts of the ingot and the steel plate, contain such inclusions that the area density of (Ti, Nb)(C, N)-based inclusions exceeding 10 μm in length is 2 pieces/mm
2 or fewer and the area density of the (Ti, Nb)(C, N)-based inclusions of 1-10 μm in length is 2-200 pieces/mm
2 . The ingot and the steel plate may contain at least one kind of metal content selected from the group consisting of 0.5% or less of Cu, 1.0% or less of Ni, 1.5% or less of Cr, 1.0% or less of Mo and 0.2% or less of V.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供含有Nb和Ti的连续铸造锭和厚钢板，并且具有如此优异的氢诱发裂纹（HIC）电阻，HIC试验中的开裂面积比（CAR）为4％或更少。
解决方案：连续铸锭和厚钢板包括0.03-0.10％C，0.05-0.4％Si，0.8-1.8％Mn，0.010％或更少的P，0.002％或更少的S，0.01-0.10％的Nb ，0.005-0.03％Ti，0.005-0.06％Al，0.0005-0.0060％Ca，0.0015-0.007％N，余量为Fe与杂质; 化学成分满足不等式1.48-1.5×Si-14.3×Ti-73×N> 0.72; 此外，在锭和钢板的中心偏析部分中，含有这样的夹杂物，即，长度超过10μm的（Ti，Nb）（C，N）系的夹杂物的面积密度为2个/ mm 2 以下，长度为1-10μm的（Ti，Nb）（C，N）系夹杂物的面积密度为2〜200个/ mm 2。锭和钢板可以含有Cu，0.5％以下，Ni：1.0％以下，Cr：1.5％以下，Mo：1.0％以下，0.2以下的金属含量百分之零以下V.版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2012167336A Steel sheet for high-strength steel pipe and high-strength steel pipe 有权
标题翻译：高强度钢管和高强度钢管钢丝
公开(公告)号：JP2012167336A
公开(公告)日：2012-09-06
申请号：JP2011030067
申请日：2011-02-15
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： MINATO IZURU , TAKAHASHI NOBUAKI
IPC分类号： C22C38/00 , B21C37/08 , B23K9/025 , B23K9/032 , B23K9/23 , B23K35/30 , C21D8/02 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet for a high-strength steel pipe having excellent HIC (Hydrogen Induced Cracking) resistance, and a high-strength steel pipe.SOLUTION: The high-strength steel pipe includes, by mass%, C: 0.020-0.070%, Si: 0.05-0.50%, Mn: 1.10-1.60%, P: 0.008% or less, S: 0.0006% or less, Cu: 0.05-0.50%, Cr: 0.05-0.50%, Ni: 0.05-1.00%, Mo: 0.50% or less, Nb: 0.005-0.080%, V: 0.005-0.080%, Ti: 0.005-0.030%, N: 0.0015-0.0070%, Al: 0.005-0.060%, Ca: 0.0005-0.0060%, and the balance of Fe and impurities, and satisfies formula (1): 0.6
摘要翻译：要解决的问题：提供一种具有优异的HIC（氢诱发开裂）电阻的高强度钢管和高强度钢管的钢板。解决方案：高强度钢管以质量％计含有C：0.020-0.070％，Si：0.05-0.50％，Mn：1.10-1.60％，P：0.008％以下，S：0.0006％或少于Cu：0.05-0.50％，Cr：0.05-0.50％，Ni：0.05-1.00％，Mo：0.50％以下，Nb：0.005-0.080％，V：0.005-0.080％，Ti：0.005-0.030％，N：0.0015-0.0070％，Al：0.005-0.060％，Ca：0.0005-0.0060％，余量为Fe和杂质，满足式（1）：0.6

4. 发明专利

JP2009235460A High-strength uoe steel pipe excellent in earthquake-proof performance and low-temperature toughness of weld heat-affected zone 审中-公开
标题翻译：高强度钢管在焊接热影响区的地震性能和低温韧性优异
公开(公告)号：JP2009235460A
公开(公告)日：2009-10-15
申请号：JP2008081162
申请日：2008-03-26
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： TAKAHASHI NOBUAKI , YAMAMOTO AKIO , HAMADA MASAHIKO
IPC分类号： C22C38/00 , C22C38/16 , C22C38/58
CPC分类号： C22C38/42 , B21D5/015 , B21D35/005 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58 , F16L9/02 , Y10T428/12292
摘要： PROBLEM TO BE SOLVED: To provide a high-strength UOE steel pipe which has excellent earthquake-proof performance, has a weld heat-affected zone having excellent low-temperature toughness, and is suitable for use in a pipeline to be laid in, for instance, permafrost in cold district or a seismogenetic region. SOLUTION: The UOE steel pipe has a steel composition which comprises 0.03 to 0.07% C, 0.05 to 0.50% Si, 1.6 to 2.2% Mn, 0.020% or less P, 0.003% or less S, 0.20 to 0.60% Cu, 0.10% or less Cr, 0.20 to 0.80% Ni, 0.005 to 0.030% Nb, 0.005 to 0.030% Ti, 0.0070% or less N, 0.005 to 0.060% Al so that a hardenability index (Pcm) can be 0.22% or less and also Cu+Cr+Ni: 0.4 to 1.5% and Nb+Mo+V: 0.05% or less can be satisfied, and the balance Fe with impurities; and has a yield strength in the axial direction of 480 MPa or higher and a yield ratio of 85% or lower. Furthermore, the weld heat-affected zone has a Charpy absorption energy of 40 J or higher at -40°C. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供具有优异的抗震性能的高强度UOE钢管，具有优异的低温韧性的焊接热影响区，适用于待铺设的管道例如，在寒冷地区或地震发生地区的永久冻土。解决方案：UOE钢管具有含有0.03〜0.07％的C，0.05〜0.50％的Si，1.6〜2.2％的Mn，0.020％以下的P，0.003％以下的S，0.20〜0.60％的Cu ，0.10％以下的Cr，0.20〜0.80％的Ni，0.005〜0.030％的Nb，0.005〜0.030％的Ti，0.0070％以下的N，0.005〜0.060％的Al，使得淬透性指数（Pcm）可以为0.22％以下并且可以满足Cu + Cr + Ni：0.4〜1.5％，Nb + Mo + V：0.05％以下，余量为Fe的杂质; 并且轴向的屈服强度为480MPa以上，屈服比为85％以下。此外，焊接热影响区在-40℃下具有40J以上的夏比吸收能。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2006257499A High tensile strength steel sheet, welded steel tube and method for producing them 有权
标题翻译：高强度钢板，焊接钢管及其生产方法
公开(公告)号：JP2006257499A
公开(公告)日：2006-09-28
申请号：JP2005076727
申请日：2005-03-17
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： TAKAHASHI NOBUAKI , HAMADA MASAHIKO , OKAGUCHI HIDEJI , YAMANAKA AKIHIRO , SETA ICHIRO
IPC分类号： C22C38/00 , B21B3/00 , B21C37/08 , B22D11/00 , B22D11/115 , B22D11/128 , C21D8/02 , C22C38/58
CPC分类号： C21D8/0226 , B21B3/02 , B21C37/08 , C21D8/10 , C21D9/08 , C21D9/50 , C21D2211/002 , C21D2211/005 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/58 , Y10S148/908 , Y10T428/12292
摘要： PROBLEM TO BE SOLVED: To provide a high tensile strength steel sheet having a yield strength of ≥551 MPa and a tensile strength of ≥620 MPa, and also having excellent toughness, high speed ductile breakdown properties and weldability. SOLUTION: In the high tensile strength steel sheet, carbon equivalent Pcm shown by formula (1) is 0.180 to 0.220%, surface hardness is ≤285 by Vickers, the ratio of insular martensite in the surface layer part is ≤10%, the ratio of the mixed structure of ferrite and bainite at the inside than the surface layer part is ≥90%, also, the ratio of the bainite in the mixed structure is ≥10%, the thickness of the lath in the bainite is ≤1 μm, the length of the lath is ≤20 μm, and the segregation degree as the ratio of the Mn concentration in the central segregation part to the Mn concentration in the part at a depth of 1/4 of the sheet thickness from the surface is ≤1.3: Pcm=C+Si/30+(Mn+Cu+Cr)/20+Ni/60+Mo/15+V/10+5B (1); the symbols in the formula (1) denote the mass% of the respective elements. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供屈服强度≥551MPa，拉伸强度≥620MPa的高强度钢板，并且还具有优异的韧性，高速韧性击穿性和焊接性。解决方案：在高拉伸强度钢板中，式（1）所示的碳当量Pcm为维克斯的0.180至0.220％，表面硬度≤285，表层部分中的岛状马氏体比为≤10％铁素体与贝氏体混合结构比表面层部分的比例≥90％，混合结构中的贝氏体比例≥10％，贝氏体的板条厚度≤ 1μm时，板条的长度为≤20μm，偏析部分的中心偏析部分的Mn浓度与该表面的板厚的1/4的深度部分的Mn浓度的比例 ≤1.3：Pcm = C + Si / 30 +（Mn + Cu + Cr）/ 20 + Ni / 60 + Mo / 15 + V / 10 + 5B（1）公式（1）中的符号表示各元素的质量％。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2003033876A Welded metal part having high strength, excellent in low temperature cracking resistance, and its forming method 有权
标题翻译：焊接金属部件具有高强度，优异的低温耐开裂性，以及其形成方法
公开(公告)号：JP2003033876A
公开(公告)日：2003-02-04
申请号：JP2001215394
申请日：2001-07-16
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： IKEDA TOMOAKI , YAMAMOTO AKIO , YAMAUCHI SHIGEMICHI , TAKAHASHI NOBUAKI , HAMADA MASAHIKO
IPC分类号： B23K9/23 , B23K9/18 , C22C38/00 , C22C38/14 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To surely obtain a welded metal part having a tensile strength of ≥750 MPa, and besides excellent in low temperature toughness and low tempera ture cracking resistance, regarding a high strength welded steel tube or the like, which has the tensile strength of ≥750 MPa.
SOLUTION: The welded metal part contains, by mass, at least C of 0.01-0.15%, Si of 0.02-0.6%, Mn of 0.6-3.0%, P of ≤0.03%, S of ≤0.03%, Al of 0.004-0.08%, Ti of 0.003-0.03%, B of ≤0.005%, N of ≤0.01%, and Ca or Mg of ≤0.005%, as welding metal components, and besides has a weld cracking sensitivity parameter (P cm) in the range of 0.23-0.35 mass%. This welded metal part is cooled to 100°C after its welding. Preheating/post-heating, or heat- keeping is carried out so that T, the time until the welding metal part is cooled to 100°C after its welding, satisfies the formula: T[sec] ≥ exp(7.0×Pw+4.66)(Pw=P cm+HD/60).
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了确保获得拉伸强度> = 750MPa的焊接金属部件，并且除了低温韧性和低耐热龟裂性以外，对于具有高强度焊接钢管等的高强度焊接钢管等拉伸强度> 750MPa。解决方案：焊接金属部分质量含有至少为0.01-0.15％的C，0.02-0.6％的Si，0.6-3.0％的Mn，0.03％的S，≤0.03％的S， 0.004-0.08％，Ti为0.003-0.03％，B为<0.005％，N为<0.01％，Ca或Mg <0.005％为焊接金属成分，另外具有焊接裂纹敏感性参数 Pcm）在0.23-0.35质量％的范围内。该焊接金属部件在焊接后冷却至100℃。进行预热/后加热或保温，使焊接后的焊接金属部件冷却至100℃的时间T满足公式：T [sec]> = exp（7.0×Pw +4.66）（Pw = P cm + HD / 60）。

7. 发明专利

JP2011063840A Steel sheet having excellent hic resistance and uoe steel pipe 审中-公开
标题翻译：具有优异的耐腐蚀性和镀镍钢管的钢板
公开(公告)号：JP2011063840A
公开(公告)日：2011-03-31
申请号：JP2009214724
申请日：2009-09-16
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： MINATO IZURU , TAKAHASHI NOBUAKI , YAMAMOTO AKIO
IPC分类号： C22C38/00 , B21B3/00 , B21C37/08 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet in which, in addition to the control of elements known as HIC generation causes heretofore such as Mn, P and S, in particular, HIC generation caused by the carbonitrides of Nb and Ti can be prevented.
SOLUTION: The steel sheet having excellent HIC resistance has a composition comprising 0.02 to 0.07% C, 0.05 to 0.5% Si, 1.10 to 1.60% Mn, ≤0.015%P, ≤0.0020% S, 0.010 to 0.050% Nb, 0.005 to 0.025% Ti, 0.005 to 0.6% sol.Al, 0.0005 to 0.0060% Ca and 0.0015 to 0.007% N, and also satisfying inequality (1): 0.1%≤Cu+Ni+Cr+Mo≤1.5%, and the balance Fe with impurities, and in which the concentration of Nb in a region at a distance of a sheet thickness of 5% from the central part in the sheet thickness direction toward the sheet thickness direction is ≤0.060%, and further, the concentration of Ti is ≤0.025%.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种钢板，其特征在于，除了对由Mn，P，S等以前的HIC生成所产生的元素进行控制以外，特别是由Nb和Ti的碳氮化物引起的HIC生成可以防止。解决方案：具有优异HIC电阻的钢板具有包括0.02-0.07％C，0.05-0.5％Si，1.10到1.60％Mn，≤0.015％P，≤0.0020％S，0.010-0.050％Nb， 0.005〜0.025％Ti，0.005〜0.6％sol.Al，0.0005〜0.0060％Ca，0.0015〜0.007％N，满足不等式（1）：0.1％≤Cu+ Ni + Cr +Mo≤1.5％将Fe与杂质平衡，并且其中在板厚度方向上的中心部分的板厚为5％的区域中的区域中的Nb的浓度在板厚方向上为≤0.060％，此外， Ti≤0.025％。版权所有（C）2011，JPO＆INPIT

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