公开(公告)号：EP2341161A1

公开(公告)日：2011-07-06

申请号：EP09823629.2

申请日：2009-10-28

申请人： Sumitomo Metal Industries Limited

发明人： KONDO, Kunio ,  AMAYA, Hisashi ,  TAKABE, Hideki ,  OHE, Taro

IPC分类号： C22C38/00 ,  C22C38/44 ,  C22C38/54

CPC分类号： C22C38/42 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44

摘要： The problem to be solved is the provision of a high-strength stainless steel pipe having a sufficient corrosion resistance in a high-temperature carbonic acid gas environment and having an excellent sulfide stress cracking resistance at normal temperature.
A high-strength stainless steel pipe consist of, by mass%, C: 0.05% or less, Si: 1.0% or less, P: 0.05% or less, S: less than 0.002%, Cr: more than 16% and 18% or less, Mo: more than 2% and 3% or less, Cu: 1% to 3.5%, Ni: 3% or more and less than 5%, Al: 0.001 % to 0.1 % and O: 0.01% or less, Mn: 1% or less and N: 0.05% or less, and Mn and N in the above ranges satisfy formula (1), and the balance being Fe and impurities; and the metal micro-structure of the stainless steel pipe mainly includes a martensitic phase and comprises 10 to 40% of a ferritic phase by volume fraction and 10% or less of a retained γ-phase by volume fraction. Mn × N - 0.0045 ≤ 0.001
wherein the symbols of elements in formula (1) respectively represent the contents (unit: mass%) of the elements in the steel.

摘要翻译： 待解决的问题是具有在高温碳酸气环境中的足够的耐腐蚀性，并具有优异的抗硫化物应力在正常温度下耐龟裂性的高强度不锈钢钢管的提供。 一种高强度不锈钢管组成的，以质量％计，C：0.05％以下，Si：1.0％以下，P：0.05％或以下，S：小于0.002％，Cr：大于16％至18 ％以下，Mo：大于2％且在3％以下，Cu：1％〜3.5％以下，Ni：3％以上且小于5％以下，Al：小于0.01％至或：0.001％至0.1％，及O 以下，Mn：1％以下，N：0.05％以下，及Mn和N在上述范围内满足式（1），余量由Fe和杂质; 和不锈钢管的金属微观结构主要包括马氏体相和以体积分数由体积分数和10％或更少的残留³相包括铁素体相为10〜40％。 锰X N - 0.0045‰¤0001 worin在式元素符号（1）分别表示的内容：在钢中的元素（单位质量％）。

公开(公告)号：EP1995341A1

公开(公告)日：2008-11-26

申请号：EP08722143.8

申请日：2008-03-14

申请人： Sumitomo Metal Industries Limited

发明人： TAKABE, Hideki ,  UEDA, Masakatsu ,  KONDO, Kunio ,  OHE, Taro

IPC分类号： C22C38/00 ,  C22C38/58 ,  C21D8/10

CPC分类号： C22C38/004 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/58

摘要： An oil country tubular good for expansion according to the invention is expanded in a well. The oil country tubular good for expansion according to the invention is formed of duplex stainless steel having a composition containing, in percentage by mass, 0.005% to 0.03% C, 0.1% to 1.0% Si, 0.2% to 2.0% Mn, at most 0.04% P, at most 0.015% S, 18.0% to 27.0% Cr, 4.0% to 9.0% Ni, at most 0.040% Al, and 0.05% to 0.40% N, and the balance consisting of Fe and impurities, a structure including an austenite ratio in the range from 40% to 90%. The oil country tubular good for expansion according to the invention has a yield strength from 256 MPa to 655 MPa, and a uniform elongation more than 20%. Therefore, the oil country tubular good for expansion according to the invention has a high pipe expansion characteristic.

摘要翻译： 根据本发明有利于膨胀的油井管在井中扩大。 根据本发明的用于膨胀的油井管由具有以下成分的双相不锈钢形成，其组成含有：以质量计含有0.005％至0.03％的C，0.1％至1.0％的Si，至多0.2％至2.0％的Mn 0.04％P，最多0.015％S，18.0％至27.0％的Cr，4.0％至9.0％的Ni，至多为0.040％的Al和0.05％至0.40％的N，余量由Fe和杂质组成，包括 奥氏体比在40％至90％的范围内。 根据本发明的用于膨胀的油井管的屈服强度为256MPa至655MPa，均匀伸长率大于20％。 因此，根据本发明的用于膨胀的油井管具有较高的管膨胀特性。

公开(公告)号：EP2000555A1

公开(公告)日：2008-12-10

申请号：EP08722142.0

申请日：2008-03-14

申请人： Sumitomo Metal Industries Limited

发明人： OHE, Taro ,  NAKAMURA, Keiichi ,  TAKABE, Hideki ,  ABE, Toshiharu ,  MORI, Tomoki ,  UEDA, Masakatsu

IPC分类号： C22C38/00 ,  C21D8/10 ,  C21D9/08 ,  C22C38/50

CPC分类号： C22C38/18 ,  C21D8/105 ,  C22C38/02 ,  C22C38/04 ,  C22C38/20 ,  Y10S148/909

摘要： An oil country tubular good for expansion according to the invention is expanded in a well. The oil country tubular good for expansion has a composition containing, in percentage by mass, 0.05% to 0.08% C, at most 0.50% Si, 0.80% to 1.30% Mn, at most 0.030% P, at most 0.020% S, 0.08% to 0.50% Cr, at most 0.01% N, 0.005% to 0.06% Al, at most 0.05% Ti, at most 0.50% Cu, and at most 0.50% Ni, and the balance consisting of Fe and impurities, and a structure having a ferrite ratio of at least 80%. The oil country tubular good for expansion has a yield strength in the range from 276 MPa to 379 MPa and a uniform elongation of at least 16%. Therefore, the oil country tubular good according to the invention has a high pipe expansion characteristic.

摘要翻译： 扩展gemäß发明的油井管在井中已展开。 对于膨胀油井管具有如下组成成分：以质量，0.05％至0.08％至C，至多0.50％的Si，0.80％至1.30％的Mn，0.030％的P，至多0.020％的S，12:08百分比 ％〜12：50％的Cr，至多0.01％至N，0.005％至0.06％于Al，至多0.05％的Ti，至多0.50％的Cu，和至多0.50％的Ni，和余量为Fe和杂质，以及结构 具有至少80％的铁素体比例。 为扩径用油井管具有良好的从276 MPa至379兆帕，至少16％的均匀延伸率的范围内的屈服强度。 因此，根据本发明的油井管具有高的扩径性。