公开(公告)号：US08696834B2

公开(公告)日：2014-04-15

申请号：US13236702

申请日：2011-09-20

申请人： Keiichi Kondo ,  Toshiharu Abe ,  Kunio Kondo ,  Yuichi Yano ,  Yuji Arai

发明人： Keiichi Kondo ,  Toshiharu Abe ,  Kunio Kondo ,  Yuichi Yano ,  Yuji Arai

IPC分类号： C21D9/08 ,  C22C38/22 ,  C21D11/00

CPC分类号： C21D8/105 ,  C21D9/085 ,  C22C1/002 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32

摘要： A method for suppressing shock and storage cracking when manufacturing seamless steel pipes comprises hot piercing and hot rolling a billet consisting of, by mass percent controlled amounts of C, Si, Mn, Cr, Mo, Ti, and Al, with the balance being Fe and impurities of Ni, P, S, N, and O also in controlled amounts. Further heat treatment is performed, wherein a hot rolled steel pipe is direct quenched from a temperature of not lower than the Ar3 transformation point and the pipe is then subjected to heat treatment at a temperature of not lower than 450° C. and not higher than the Ac1 transformation point in heat treatment equipment for performing direct quenching. The steel pipe subjected to the heat treatment is reheated, quenched from a temperature of not lower than the Ac3 transformation point, and tempered at a temperature of not higher than the Ac1 transformation point.

摘要翻译： 制造无缝钢管时的冲击和储存裂纹的抑制方法，其特征在于，以C，Si，Mn，Cr，Mo，Ti，Al的质量百分比计，由热刺穿和热轧制成的坯料，余量为Fe 和Ni，P，S，N和O的杂质也是受控量的。 进行进一步的热处理，其中热轧钢管从不低于Ar 3相变点的温度直接淬火，然后在不低于450℃的温度下对管进行热处理， 用于直接淬火的热处理设备的Ac1转换点。 进行热处理的钢管从不低于Ac 3相变点的温度再加热淬火，并在不高于Ac1相变点的温度下回火。

公开(公告)号：US20120042992A1

公开(公告)日：2012-02-23

申请号：US13236702

申请日：2011-09-20

申请人： Keiichi KONDO ,  Toshiharu ABE ,  Kunio KONDO ,  Yuichi YANO ,  Yuji ARAI

发明人： Keiichi KONDO ,  Toshiharu ABE ,  Kunio KONDO ,  Yuichi YANO ,  Yuji ARAI

IPC分类号： C21D11/00 ,  C21D9/08

CPC分类号： C21D8/105 ,  C21D9/085 ,  C22C1/002 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32

摘要： A method for suppressing shock and storage cracking when manufacturing seamless steel pipes comprises hot piercing and hot rolling a billet consisting of, by mass percent controlled amounts of C, Si, Mn, Cr, Mo, Ti, and Al, with the balance being Fe and impurities of Ni, P, S, N, and O also in controlled amounts. Further heat treatment is performed, wherein a hot rolled steel pipe is direct quenched from a temperature of not lower than the Ar3 transformation point and the pipe is then subjected to heat treatment at a temperature of not lower than 450° C. and not higher than the Ac1 transformation point in heat treatment equipment for performing direct quenching. The steel pipe subjected to the heat treatment is reheated, quenched from a temperature of not lower than the Ac3 transformation point, and tempered at a temperature of not higher than the Ac1 transformation point.

摘要翻译： 制造无缝钢管时的冲击和储存裂纹的抑制方法，其特征在于，以C，Si，Mn，Cr，Mo，Ti，Al的质量百分比计，由热刺穿和热轧制成的坯料，余量为Fe 和Ni，P，S，N和O的杂质也是受控量的。 进行进一步的热处理，其中热轧钢管从不低于Ar 3相变点的温度直接淬火，然后在不低于450℃的温度下对管进行热处理， 用于直接淬火的热处理设备的Ac1转换点。 进行热处理的钢管从不低于Ac 3相变点的温度再加热淬火，并在不高于Ac1相变点的温度下回火。

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：US20090047166A1

公开(公告)日：2009-02-19

申请号：US12285251

申请日：2008-10-01

申请人： Kuniaki Tomomatsu ,  Tomohiko Omura ,  Yuji Arai ,  Toshiharu Abe

发明人： Kuniaki Tomomatsu ,  Tomohiko Omura ,  Yuji Arai ,  Toshiharu Abe

IPC分类号： C21D9/08 ,  C22C38/28 ,  C22C38/32

CPC分类号： C22C38/02 ,  C21D6/002 ,  C21D8/0226 ,  C21D8/0263 ,  C21D9/14 ,  C22C38/002 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24 ,  C22C38/28

摘要： A low alloy steel comprising, by mass %, C: 0.10 to 0.20%, Si: 0.05 to 1.0%, Mn: 0.05 to 1.5%, Cr: 1.0 to 2.0%, Mo: 0.05 to 2.0%, Al: 0.10 % or less and Ti: 0.002 to 0.05%, and with a Ceq value obtained by the following formula (1) of 0.65 or more, with the balance being Fe and impurities, wherein in the impurities, P is 0.025% or less, S is 0.010% or less, N is 0.007% or less, and B is less than 0.0003%, and the number per unit area of M23C6 type precipitates (M: a metal element) whose grain diameter is 1 μm or more is 0.1/mm2 or less. This invention provides a low alloy steel possessing both hardenability and toughness and improves the resistance to sulfide stress corrosion cracking. Ceq=C+(Mn/6)+(Cr+Mo+V)/5   formula (1) where C, Mn, Cr, Mo and V in the formula (1) denote the mass % of respective elements.

摘要翻译： 1.一种低合金钢，以质量％计含有C：0.10〜0.20％，Si：0.05〜1.0％，Mn：0.05〜1.5％，Cr：1.0〜2.0％，Mo：0.05〜2.0％，Al：0.10％ 较小，Ti：0.002〜0.05％，下述通式（1）所得的Ceq值为0.65以上，余量为Fe和杂质，其中，在杂质中，P为0.025％以下，S为0.010 ％以下，N为0.007％以下，B小于0.0003％，粒径为1μm以上的M23C6型析出物（M：金属元素）的单位面积数为0.1个/ mm 2以下 。 本发明提供了具有淬透性和韧性两者的低合金钢，提高了耐硫化应力腐蚀开裂性。 Ce = C +（Mn / 6）+（Cr + Mo + V）/ 5式（1）<？in-line-formula description =“In-line formula”end =“lead” 式中，式（1）中的C，Mn，Cr，Mo和V表示各元素的质量％。

公开(公告)号：US06958099B2

公开(公告)日：2005-10-25

申请号：US10419967

申请日：2003-04-22

申请人： Shigeru Nakamura ,  Kaori Kawano ,  Tomohiko Omura ,  Toshiharu Abe

发明人： Shigeru Nakamura ,  Kaori Kawano ,  Tomohiko Omura ,  Toshiharu Abe

IPC分类号： C21D8/10 ,  C22C38/00 ,  C22C38/04 ,  C22C38/22 ,  C22C38/28 ,  C22C38/38 ,  C22C38/12

CPC分类号： C22C38/22 ,  C21D8/10 ,  C22C38/002 ,  C22C38/04 ,  C22C38/28

摘要： A steel material and a steel pipe made by using the same are provided which are to be used in severe oil well environments. Such a highly tough oil well steel pipe can be produced by rolling the base material, quenching the rolling product from the austenite region and tempering the same so that the relationship between the content of Mo [Mo] in the carbides precipitated at austenite grain boundaries and the austenite grain size (according to ASTM E 112) can be defined by the formula (a) given below. In this manner, steel pipes suited for use even under oil well environments becoming more and more severe can be produced while satisfying the requirements that the cost should be rationalized, the productivity improved and energy saved. [Mo]≦exp(G−5)+5  (a)

摘要翻译： 提供了一种钢材和使用该钢材的钢管，用于严酷的油井环境。 这种高韧性的油井钢管可以通过轧制基体材料，从奥氏体区域淬火轧制产品并回火来生产，使得在奥氏体晶界析出的碳化物中的Mo [Mo]的含量与 奥氏体晶粒尺寸（根据ASTM E 112）可以由下面给出的式（a）定义。 以这种方式，即使在油井环境变得越来越严重的情况下也可以生产适合使用的钢管，同时满足成本合理化，生产率提高和节能的要求。 <？in-line-formula description =“In-line Formulas”end =“lead”？> [Mo] <= EXP（G-5）+5（a）<？in-line-formula description = 行公式“end =”tail“？>

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：US20060231168A1

公开(公告)日：2006-10-19

申请号：US11387747

申请日：2006-03-24

申请人： Keiichi Nakamura ,  Hajime Osako ,  Nobutoshi Murao ,  Toshiharu Abe

发明人： Keiichi Nakamura ,  Hajime Osako ,  Nobutoshi Murao ,  Toshiharu Abe

IPC分类号： C22C38/22

CPC分类号： C22C38/02 ,  C22C38/04 ,  C22C38/22

摘要： Disclosed are seamless steel tubes for oil well use, comprising C: 0.14-0.35%, Si: 0.05-1.0%, Mn: 0.05-2.0%, Cr: 0.05-1.5%, Mo: 0.05-2.0%, Ti: 0-0.05%, V: 0-0.1%, and Al: not less than 0.010%, wherein the concentration product by Al and N content, corrected by Ti and V, is within the range of 0.00001 to 0.00050, and the residuals are Fe and impurities including P: 0.025% or less, and S: 0.010% or less. Ti, V, Nb, or B is preferably contained to enhance the quench hardenability as well as the resistance to sulfide stress corrosion cracking, and further Ca, Mg and/or REM is preferably contained to improve the shape of non-metallic inclusions, enhancing the resistance to sulfide stress corrosion cracking. Thus, said tubes by the invention can be produced by efficient means realizing energy savings, and widely used as ones having excellent stability in mechanical strength.

摘要翻译： 公开了用于油井的无缝钢管，其包括C：0.14-0.35％，Si：0.05-1.0％，Mn：0.05-2.0％，Cr：0.05-1.5％，Mo：0.05-2.0％，Ti： 0.05％，V：0〜0.1％，Al：不小于0.010％，其中通过Ti和V校正的Al和N含量的浓度乘积在0.00001至0.00050的范围内，残余物为Fe和 P：0.025％以下，S：0.010％以下的杂质。 优选含有Ti，V，Nb或B以提高淬火淬透性以及耐硫化物应力腐蚀开裂性，并且优选含有Ca，Mg和/或REM，以改善非金属夹杂物的形状，提高 耐硫化物应力腐蚀开裂。 因此，通过本发明的所述管可以通过实现节能的有效手段制造，并且被广泛用作具有优异的机械强度稳定性的装置。

公开(公告)号：US20090098403A1

公开(公告)日：2009-04-16

申请号：US12232363

申请日：2008-09-16

申请人： Tomohiko Omura ,  Yuji Arai ,  Kuniaki Tomomatsu ,  Toshiharu Abe

发明人： Tomohiko Omura ,  Yuji Arai ,  Kuniaki Tomomatsu ,  Toshiharu Abe

IPC分类号： C22C38/22 ,  C22C38/12 ,  C22C38/04 ,  B32B1/08

CPC分类号： C22C38/22 ,  C21D8/12 ,  C21D9/08 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  Y10T428/12292

摘要： A low alloy steel is provided for oil country tubular goods with a yield strength between 654 MPa and 757 MPa, and possessing excellent resistance to HIC and SSC in high-pressure hydrogen sulfides environment, and comprising, by mass %: 0.10 to 0.60% C; 0.05 to 0.5% Si; 0.05 to 3.0% Mn; 0.025% or less P; 0.010% or less S; 0.005 to 0.10% Al; 0.01% or less O (oxygen); 3.0% or less Cr; and 3.0% or less Mo, wherein the amount of Cr and Mo content is 1.2% or more, with the balance being Fe and impurities, and the number of nonmetallic inclusions whose major axis is 10 μm or more is 10 per square millimeter in the inspected cross section. The present invention provides a low alloy steel for oil country tubular goods possessing excellent resistance to sulfide stress cracking, and a seamless steel pipe.

摘要翻译： 本发明提供一种低合金钢，其屈服强度在654MPa〜757MPa之间，在高压硫化氢环境下具有优异的抗HIC，SSC特性，其质量含量为0.10〜0.60％ ; 0.05〜0.5％Si; 0.05〜3.0％Mn; 0.025％以下P; 0.010％以下S; 0.005〜0.10％Al; 0.01％以下O（氧）; 3.0％以下Cr; 和3.0％以下的Mo，其中Cr和Mo的含量为1.2％以上，余量为Fe和杂质，长轴为10μm以上的非金属夹杂物的数量为10个/平方毫米 检查截面。 本发明提供一种具有优异的抗硫化物应力开裂性的油井筒用低合金钢和无缝钢管。

公开(公告)号：US06692592B2

公开(公告)日：2004-02-17

申请号：US10361555

申请日：2003-02-11

申请人： Shigeru Kidani ,  Koichi Ikeda ,  Toshiharu Abe

发明人： Shigeru Kidani ,  Koichi Ikeda ,  Toshiharu Abe

IPC分类号： C21D810

CPC分类号： C22C38/44 ,  C21D8/105 ,  C21D9/08 ,  C22C38/24 ,  C22C38/46 ,  C22C38/58

摘要： A method for manufacturing a high Cr system seamless steel pipe having a high inside surface quality with a high efficiency and at a reduced production cost is provided. An initial material including Cr at a content of 10 to 20%, and impurities S and P at respective contents of not more than 0.050% is used to form a finished pipe, and when using parameters, the total soaking period &Sgr;t1 (hours) for soaking the initial material to form a primary pipe material as a billet or bloom and the total soaking period &Sgr;t2 (hours) for soaking the primary pipe material, a finished pipe is formed at a heating temperature of 1,200° C. under the condition that the following equation (b) is satisfied: F = f + 0.6 × ( 1 - 1 e ∑   ⁢ t1 ) + 0.8 × ( 1 - 1 e ∑ t2 ) > - 9.7 ( b ) where f is a factor indicating the degree of generating the &dgr; ferrites in accordance with the contents of elements included therein. The method allows a high Cr system seamless steel pipe having a very small amount of inside surface defects to be formed, using a high Cr steel. Since a predetermined productivity can be attained without any excessive addition of impurities, a high Cr system seamless steel pipe having a high inside surface quality can be produced with a high efficiency.

摘要翻译： 提供了一种以高效率和降低生产成本制造具有高内表面质量的高Cr系无缝钢管的方法。 使用包含Cr含量为10〜20％的初始材料，以及含量不大于0.050％的杂质S和P，以形成成品管，当使用参数时，总浸泡时间Sigmat1（小时）为 浸泡初始材料以形成作为坯料或坯料的主管材料，以及用于浸泡主管材料的总浸渍时间Sigmat2（小时），在1200℃的加热温度下形成成品管，条件是 满足以下等式（b）：其中f是指示根据其中包括的元素的内容产生δ铁素体的程度的因子。 该方法允许使用高Cr钢形成具有非常少量的内表面缺陷的高Cr系无缝钢管。 由于可以在没有任何过量添加杂质的情况下实现预定的生产率，所以可以高效率地制造具有高内表面质量的高Cr系无缝钢管。