公开(公告)号：EP1918398B1

公开(公告)日：2012-10-31

申请号：EP06782902.8

申请日：2006-08-22

申请人： Sumitomo Metal Industries Limited

发明人： KOBAYASHI, Kenji ,  OMURA, Tomohiko ,  KONDO, Kunio ,  ARAI, Yuji ,  HISAMUNE, Nobuyuki

IPC分类号： C22C38/00 ,  C21D8/10 ,  C21D9/08 ,  C22C38/12 ,  C22C38/58

CPC分类号： C22C38/005 ,  C21D8/105 ,  C21D9/08 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  Y10S148/909

公开(公告)号：EP1918398A1

公开(公告)日：2008-05-07

申请号：EP06782902.8

申请日：2006-08-22

申请人： Sumitomo Metal Industries Limited

发明人： KOBAYASHI, Kenji ,  OMURA, Tomohiko ,  KONDO, Kunio ,  ARAI, Yuji ,  HISAMUNE, Nobuyuki

IPC分类号： C22C38/00 ,  C21D8/10 ,  C21D9/08 ,  C22C38/12 ,  C22C38/58

CPC分类号： C22C38/005 ,  C21D8/105 ,  C21D9/08 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  Y10S148/909

摘要： A seamless steel pipe for line pipe having high strength and stable toughness and having resistance to sulfide corrosion cracking at low temperatures to room temperature is provided. A seamless steel pipe according to the present invention has a chemical composition comprising, in mass percent, C: 0.03 - 0.08%, Si: 0.05 - 0.5%, Mn: 1.0 - 3.0%, Mo: greater than 0.4% to 1.2%, Al: 0.005 - 0.100%, Ca: 0.001 - 0.005%, a remainder of Fe and impurities including N, P, S, O, and Cu, with the impurities containing at most 0.01 % ofN, at most 0.05% of P, at most 0.01 % of S, at most 0.01 % of O, and at most 0.1 % of Cu, and having a microstructure comprising a bainitic-martensitic dual phase structure.

摘要翻译： 提供了一种具有高强度和稳定韧性并且在低温至室温下具有耐硫化物腐蚀开裂性能的管线管用无缝钢管。 根据本发明的无缝钢管具有质量％C：0.03〜0.08％，Si：0.05〜0.5％，Mn：1.0〜3.0％，Mo：大于0.4％〜1.2％的化学组成， Al：0.005〜0.100％，Ca：0.001〜0.005％，余量为Fe，杂质含有N，P，S，O，Cu，杂质含有0.01％以下的N，最多为P的0.05％，P 最多0.01％的S，至多0.01％的O和至多0.1％的Cu，并且具有包含贝氏体 - 马氏体双相结构的微结构。

公开(公告)号：EP1918397A1

公开(公告)日：2008-05-07

申请号：EP06782899.6

申请日：2006-08-22

申请人： Sumitomo Metal Industries Limited

发明人： KONDO, Kunio ,  ARAI, Yuji ,  HISAMUNE, Nobuyuki

IPC分类号： C22C38/00 ,  C21D8/10 ,  C21D9/08 ,  C22C38/12 ,  C22C38/58

CPC分类号： C22C38/005 ,  C21D8/105 ,  C21D9/08 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  Y10S148/909

摘要： A thick-walled seamless steel pipe for line pipe which has a high strength and improved toughness and corrosion resistance in spite of the thick wall and which is suitable for use as a riser and flow line has a chemical composition comprising, in mass percent, C: 0.02 - 0.08%, Si: at most 0.5%, Mn: 1.5 - 3.0%, Al: 0.001 - 0.10%, Mo: greater than 0.4% - 1.2%, N: 0.002 - 0.015%, at least one of Ca and REM in a total amount of 0.0002 - 0.007%, and a remainder of Fe and impurities, with the impurities having the content of P: at most 0.05%, S: at most 0.005%, and O: at most 0.005%, the chemical composition satisfying the inequality: 0.8 ≤ [Mn] x [Mo] ≤ 2.6, wherein [Mn] and [Mo] are the numbers equivalent to the contents of Mn and Mo, respectively, in mass percent.

摘要翻译： 尽管厚壁具有高强度和改善的韧性和耐腐蚀性并且适合用作提升管和流动管线的管道管的厚壁无缝钢管具有以质量％计含有C ：0.02〜0.08％，Si：0.5％以下，Mn：1.5〜3.0％，Al：0.001〜0.10％，Mo：大于0.4％〜1.2％，N：0.002〜0.015％ REM总量为0.0002〜0.007％，余量为Fe和杂质，杂质含量为P：0.05％以下，S：0.005％以下，O：0.005％以下。 满足不等式的组成：0.8‰[Mn] x [Mo]‰2.6，其中[Mn]和[Mo]分别等于Mn和Mo含量的质量百分比。

公开(公告)号：EP2078764B1

公开(公告)日：2012-09-19

申请号：EP07829822.1

申请日：2007-10-15

申请人： Sumitomo Metal Industries Limited

发明人： ARAI, Yuji ,  TAKANO, Takashi

IPC分类号： C22C38/00 ,  C21D8/10 ,  C21D9/08 ,  C22C38/38 ,  C22C38/58 ,  B60R21/26

CPC分类号： C21D8/10 ,  C21D9/08 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22

公开(公告)号：EP2078764A1

公开(公告)日：2009-07-15

申请号：EP07829822.1

申请日：2007-10-15

申请人： Sumitomo Metal Industries Limited

发明人： ARAI, Yuji ,  TAKANO, Takashi

IPC分类号： C22C38/00 ,  C21D8/10 ,  C21D9/08 ,  C22C38/38 ,  C22C38/58 ,  B60R21/26

CPC分类号： C21D8/10 ,  C21D9/08 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22

摘要： A seamless steel tube for an airbag accumulator which can be manufactured by heat treatment of normalizing without quenching and tempering and which has a tensile strength of at least 850 MPa and resistance to bursting at -20° C has a stee; composition comprising, in mass %, C: 0.08 - 0.20%, Si: 0.1 - 1.0%, Mn: 0.6 - 2.0%, P: at most 0.025%, S: at most 0.010%, Cr: 0.05 - 1.0%, Mo: 0.05 - 1.0%, Al: 0.002 - 0.10%, at least one of Ca: 0.0003 - 0.01%, Mg: 0.0003 - 0.01%, and REM (rare earth metals): 0.0003 - 0.01%, at least one of Ti: 0.002 - 0.1% and Nb: 0.002 - 0.1%, with Ceq which is defined by the following Equation (1) being in the range of 0.45 - 0.63, with the metallurgical structure being a mixed structure of ferrite + bainite: Ceq = C + Si / 24 + Mn / 6 + Cr + Mo / 5 + Ni + Cu / 15
wherein the symbol for each element in Equation (1) indicates the number expressing the mass percent of the element.

摘要翻译： 一种用于气囊蓄能器的无缝钢管，其可以通过不进行淬火和回火的标准化的热处理并且具有至少850MPa的抗拉强度和在-20℃下的抗破裂性而制造; C：0.08〜0.20％，Si：0.1〜1.0％，Mn：0.6〜2.0％，P：0.025％以下，S：0.010％以下，Cr：0.05〜1.0％ ：0.05〜1.0％，Al：0.002〜0.10％，Ca：0.0003〜0.01％，Mg：0.0003〜0.01％，REM（稀土金属）：0.0003〜0.01％中的至少一种，Ti： 0.002-0.1％和Nb：0.002-0.1％，Ceq由下式（1）定义在0.45-0.63的范围内，冶金结构是铁素体+贝氏体：Ceq = C + Si / 24 + Mn / 6 + Cr + Mo / 5 + Ni + Cu / 15，其中式（1）中的每个元素的符号表示表示元素的质量百分比的数字。