公开(公告)号：US09109268B2

公开(公告)日：2015-08-18

申请号：US13276374

申请日：2011-10-19

申请人： Hideki Takabe ,  Kunio Kondo ,  Hisashi Amaya ,  Taro Ohe ,  Yohei Otome

发明人： Hideki Takabe ,  Kunio Kondo ,  Hisashi Amaya ,  Taro Ohe ,  Yohei Otome

IPC分类号： C22C38/42 ,  C21D8/02 ,  C21D8/10 ,  C21D9/08 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  F16L9/02

CPC分类号： C22C38/50 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/005 ,  C21D8/0205 ,  C21D8/105 ,  C21D9/08 ,  C21D9/085 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  F16L9/02

摘要： The chemical composition of a stainless steel in accordance with the present invention consists of C: not more than 0.05%, Si: not more than 0.5%, Mn: 0.01 to 0.5%, P: not more than 0.04%, S: not more than 0.01%, Cr: more than 16.0 and not more than 18.0%, Ni: more than 4.0 and not more than 5.6%, Mo: 1.6 to 4.0%, Cu: 1.5 to 3.0%, Al: 0.001 to 0.10%, and N: not more than 0.050%, the balance being Fe and impurities, and satisfies Formulas (1) and (2). Also, the micro-structure thereof contains a martensitic phase and a ferritic phase having a volume ratio of 10 to 40%, and the ferritic phase distribution ratio is higher than 85%. Cr+Cu+Ni+Mo≧25.5  (1) −8≦30(C+N)+0.5Mn+Ni+Cu/2+8.2−1.1(Cr+Mo)≦−4  (2)

摘要翻译： 根据本发明的不锈钢的化学组成由C：不大于0.05％，Si：不大于0.5％，Mn：0.01至0.5％，P：不大于0.04％，S：不大于 0.01％以上，Cr：16.0以上18.0％以下，Ni：4.0以上5.6％以下，Mo：1.6〜4.0％，Cu：1.5〜3.0％，Al：0.001〜0.10％ N：不大于0.050％，余量为Fe和杂质，并满足式（1）和（2）。 此外，其微结构含有马氏体相和体积比为10〜40％的铁素体相，铁素体相分布比高于85％。 Cr + Cu + Ni +Mo≥25.5（1）-8＆nlE; 30（C + N）+ 0.5Mn + Ni + Cu / 2 + 8.2-1.1（Cr + Mo）＆nlE; -4（2）

公开(公告)号：US08608872B2

公开(公告)日：2013-12-17

申请号：US13082432

申请日：2011-04-08

申请人： Kunio Kondo ,  Hisashi Amaya ,  Hideki Takabe ,  Taro Ohe

发明人： Kunio Kondo ,  Hisashi Amaya ,  Hideki Takabe ,  Taro Ohe

IPC分类号： C22C38/42 ,  C22C38/44

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  (1) wherein the symbols of elements in formula (1) respectively represent the contents (unit: mass %) of the elements in the steel.

摘要翻译： 要解决的问题是在高温碳酸气体环境中提供具有足够耐腐蚀性的高强度不锈钢管，并且在常温下具有优异的耐硫化物应力开裂性。 高强度不锈钢管以质量％计含有C：0.05％以下，Si：1.0％以下，P：0.05％以下，S：小于0.002％，Cr：16％以上18以下 ％以下，Mo：大于2％，3％以下，Cu：1〜3.5％，Ni：3％以上且小于5％，Al：0.001〜0.1％，O：0.01％以下 ，Mn：1％以下，N：0.05％以下，上述范围的Mn和N满足式（1），余量为Fe和杂质; 并且不锈钢管的金属微结构主要包括马氏体相，并且包含10〜40体积％的铁素体相和10体积％以下的γ相。 [Mn]×（[N] -0.0045）@ 0.001（1）其中，式（1）中的元素的符号分别表示钢中元素的含量（单位：质量％）。

公开(公告)号：US20110226378A1

公开(公告)日：2011-09-22

申请号：US13082432

申请日：2011-04-08

申请人： Kunio KONDO ,  Hisashi Amaya ,  Hideki Takabe ,  Taro Ohe

发明人： Kunio KONDO ,  Hisashi Amaya ,  Hideki Takabe ,  Taro Ohe

IPC分类号： F16L9/00

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  (1) wherein the symbols of elements in formula (1) respectively represent the contents (unit: mass %) of the elements in the steel.

摘要翻译： 要解决的问题是在高温碳酸气体环境中提供具有足够耐腐蚀性的高强度不锈钢管，并且在常温下具有优异的耐硫化物应力开裂性。 高强度不锈钢管以质量％计，C：0.05％以下，Si：1.0％以下，P：0.05％以下，S：小于0.002％，Cr：16％以上18％ 以下，Mo：大于2％和3％以下，Cu：1〜3.5％，Ni：3％以上且小于5％，Al：0.001〜0.1％，O：0.01％以下， Mn：1％以下，N：0.05％以下，上述范围的Mn和N满足式（1），余量为Fe和杂质; 并且不锈钢管的金属微结构主要包括马氏体相，并且含有10〜40体积％的铁素体系相和10体积％以下的γ相。 [Mn]×（[N] -0.0045）＆nlE; 0.001（1）其中，式（1）中的元素的符号分别表示钢中的元素的含量（单位：质量％）。

公开(公告)号：US09303296B2

公开(公告)日：2016-04-05

申请号：US13607957

申请日：2012-09-10

申请人： Taro Ohe ,  Hisashi Amaya ,  Hideki Takabe ,  Kunio Kondo ,  Yohei Otome

发明人： Taro Ohe ,  Hisashi Amaya ,  Hideki Takabe ,  Kunio Kondo ,  Yohei Otome

IPC分类号： C21D8/10 ,  C22C38/42 ,  C22C38/44

CPC分类号： C21D8/10 ,  C21D8/105 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  Y10T428/12292

摘要： A high-strength stainless steel for oil well having corrosion resistance excellent in a high-temperature environment, having excellent SSC resistance at normal temperature, and having better workability than 13% Cr steels has a chemical composition containing, by mass percent, C: at most 0.05%, Si: at most 1.0%, Mn: at most 0.3%, P: at most 0.05%, S: less than 0.002%, Cr: over 16% and at most 18%, Mo: 1.5 to 3.0%, Cu: 1.0 to 3.5%, Ni: 3.5 to 6.5%, Al: 0.001 to 0.1%, N: at most 0.025%, and O: at most 0.01%, the balance being Fe and impurities, a microstructure containing a martensite phase, 10 to 48.5%, by volume ratio, of a ferrite phase and at most 10%, by volume ratio, of a retained austenite phase, yield strength of at least 758 MPa and uniform elongation of at least 10%.

摘要翻译： 在高温环境下耐腐蚀性优异，在常温下具有优异的耐SSC性，并且具有比13％Cr钢更好的加工性的油井用高强度不锈钢具有以质量％计含有C：at 最多0.05％，Si：1.0％以下，Mn：0.3％以下，P：0.05％以下，S：小于0.002％，Cr：16％以上18％以下，Mo：1.5〜3.0％ Cu：1.0〜3.5％，Ni：3.5〜6.5％，Al：0.001〜0.1％，N：0.025％以下，O：0.01％以下，余量为Fe，杂质，含有马氏体相的组织， 10 -48.5％体积比的铁素体相和至少10％的残余奥氏体相的体积比，至少758MPa的屈服强度和至少10％的均匀伸长率。

公开(公告)号：US20110014083A1

公开(公告)日：2011-01-20

申请号：US12892045

申请日：2010-09-28

申请人： Hisashi Amaya ,  Kunio Kondo ,  Hideki Takabe ,  Taro Ohe

发明人： Hisashi Amaya ,  Kunio Kondo ,  Hideki Takabe ,  Taro Ohe

IPC分类号： C22C38/44 ,  C22C38/42 ,  C22C38/58

CPC分类号： C22C38/42 ,  C21D1/25 ,  C21D6/004 ,  C21D9/14 ,  C21D9/46 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

摘要： A stainless steel for an oil country tubular good according to the invention includes, in percent by mass, 0.001% to 0.05% C, 0.05% to 1% Si, at most 2% Mn, at most 0.03% P, less than 0.002% S, 16% to 18% Cr, 3.5% to 7% Ni, more than 2% and at most 4% Mo, 1.5% to 4% Cu, 0.001% to 0.3% rare earth metal, 0.001% to 0.1% sol. Al, 0.0001% to 0.01% Ca, at most 0.05% O, and at most 0.05% N, and the balance consists of Fe and impurities. The stainless steel according to the invention includes REM and therefore has high SCC resistance in a high temperature chloride aqueous solution environment.

摘要翻译： 根据本发明的用于油井管状的不锈钢以质量％计含有0.001％至0.05％的C，0.05％至1％的Si，至多2％的Mn，至多0.03％的P，小于0.002％ S，16％〜18％的Cr，3.5％〜7％的Ni，2％以上4％以下的Mo，1.5％〜4％的Cu，0.001％〜0.3％的稀土金属，0.001〜0.1质量％的溶胶。 Al，0.0001％至0.01％Ca，最多0.05％O和至多0.05％N，余量由Fe和杂质组成。 根据本发明的不锈钢包括REM，因此在高温氯化物水溶液环境中具有高SCC电阻。

公开(公告)号：US20090032246A1

公开(公告)日：2009-02-05

申请号：US12285032

申请日：2008-09-29

申请人： Hideki Takabe ,  Masakatsu Ueda ,  Kunio Kondo ,  Taro Ohe

发明人： Hideki Takabe ,  Masakatsu Ueda ,  Kunio Kondo ,  Taro Ohe

IPC分类号： E21B17/00 ,  C22C38/58 ,  C22C38/44 ,  C22C38/42 ,  C22C38/18 ,  C22C38/54

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： 根据本发明的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下列成分的双相不锈钢制成，该组合物含有以质量计含有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％Cr，4.0％至9.0％Ni，至多0.040％Al和0.05％至0.40％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：US07799149B2

公开(公告)日：2010-09-21

申请号：US12285031

申请日：2008-09-29

申请人： Taro Ohe ,  Keiichi Nakamura ,  Hideki Takabe ,  Toshiharu Abe ,  Tomoki Mori ,  Masakatsu Ueda

发明人： Taro Ohe ,  Keiichi Nakamura ,  Hideki Takabe ,  Toshiharu Abe ,  Tomoki Mori ,  Masakatsu Ueda

IPC分类号： C22C38/04 ,  C22C38/18 ,  C21D8/10 ,  C21D9/08

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： 根据本发明的有利于膨胀的油井管在井中扩大。 适用于膨胀的油井管具有以质量计含有0.05％至0.08％C，至多0.50％Si，0.80％至1.30％Mn，至多0.030％P，至多0.020％S，0.08 ％至0.50％的Cr，至多0.01％的N，0.005％至0.06％的Al，至多0.05％的Ti，至多0.50％的Cu和至多0.50％的Ni，余量由Fe和杂质组成， 具有至少80％的铁素体比。 用于膨胀的油井管的屈服强度在276MPa至379MPa的范围内，并且具有至少16％的均匀伸长率。 因此，根据本发明的油井管状管具有较高的管膨胀特性。

公开(公告)号：US20090032150A1

公开(公告)日：2009-02-05

申请号：US12285031

申请日：2008-09-29

申请人： Taro Ohe ,  Keiichi Nakamura ,  Hideki Takabe ,  Toshiharu Abe ,  Tomoki Mori ,  Masakatsu Ueda

发明人： Taro Ohe ,  Keiichi Nakamura ,  Hideki Takabe ,  Toshiharu Abe ,  Tomoki Mori ,  Masakatsu Ueda

IPC分类号： C21D9/08 ,  C22C38/42

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： 根据本发明的有利于膨胀的油井管在井中扩大。 适用于膨胀的油井管具有以质量计含有0.05％至0.08％C，至多0.50％Si，0.80％至1.30％Mn，至多0.030％P，至多0.020％S，0.08 ％至0.50％的Cr，至多0.01％的N，0.005％至0.06％的Al，至多0.05％的Ti，至多0.50％的Cu和至多0.50％的Ni，余量由Fe和杂质组成， 具有至少80％的铁素体比。 用于膨胀的油井管的屈服强度在276MPa至379MPa的范围内，并且具有至少16％的均匀伸长率。 因此，根据本发明的油井管状管具有较高的管膨胀特性。

公开(公告)号：US20090000709A1

公开(公告)日：2009-01-01

申请号：US12230497

申请日：2008-08-29

申请人： Taro Ohe ,  Koji Nakakaike

发明人： Taro Ohe ,  Koji Nakakaike

IPC分类号： C21D9/08

CPC分类号： B21B23/00 ,  B21B3/02 ,  B21B19/04 ,  B21B25/00 ,  B21B45/004 ,  C21D8/105 ,  C21D9/08 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04

摘要： A billet containing, by mass %, 8.0 to 16.0% of Cr with a value represented by the formula of “Cr+4Si−(22C+0.5Mn+1.5Ni+30N)” of not more than 9.0%, wherein the symbols of the elements represent the contents, by mass %, of the elements in the steel, is heated by means of a heating furnace conditioned so as to have a soaking temperature of 1100 to 1300° C. and an in-furnace time (min) of not less than “0.5×Diameter of the billet (mm)”. Thereafter, by means of a centering machine capable of forming a center hole having a diameter of not less than “0.34×Diameter of the billet (mm)” at one end face of the said billet where piercing starts by punch of 60 to 110° punching angle, a center hole is formed at the said face of the billet, followed by piercing and rolling by an inclined roll type piercing mill of not more than 8.0% plug tip draft rate. The thus-produced high-Cr seamless pipe or tube has excellent internal surface properties with minimized internal surface defects.

摘要翻译： 以质量％计含有Cr + 4Si-（22C + 0.5Mn + 1.5Ni + 30N）的值为9.0％以下的值为8.0〜16.0％的Cr的坯料，其中， 元素表示钢中元素的含量（以质量％计），通过加热炉进行加热，所述加热炉被调节以使其具有1100至1300℃的均热温度和炉内时间（min） 不小于“0.5x直径的钢坯（mm）”。 此后，借助于能够形成直径不小于“0.34x直径（mm）”的中心孔的定心机，在所述坯料的一个端面处，穿孔由冲头开始60至110°冲压 在坯料的所述面上形成中心孔，然后用倾斜辊式穿孔机进行穿孔轧制，其不超过8.0％的塞尖速度。 这样生产的高Cr无缝管或管具有优异的内表面性能，内表面缺陷最小化。