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    Process for producing high-strength seamless steel pipe having excellent sulfide stress cracking resistance
    13.
    发明授权
    Process for producing high-strength seamless steel pipe having excellent sulfide stress cracking resistance 失效
    具有优异的耐硫化物应力开裂性的高强度无缝钢管的制造方法

    公开(公告)号：US5938865A

    公开(公告)日：1999-08-17

    申请号：US952222

    申请日：1998-02-05

    申请人： Kunio Kondo ,  Takahiro Kushida ,  Hajime Osako ,  Hideki Takabe

    发明人： Kunio Kondo ,  Takahiro Kushida ,  Hajime Osako ,  Hideki Takabe

    IPC分类号： B21B19/04 ,  B21B23/00 ,  C21D8/10

    CPC分类号： B21B23/00 ,  C21D8/10 ,  B21B19/04

    摘要： A process for producing a seamless steel pipe wherein pipe manufacturing steps and the heat treatment steps are carried out in one production line. The properties of the pipe are comparative or superior to those of the pipe manufactured in the conventional reheating, quenching and tempering process. The process is characterized by using the billet of a low alloy steel containing C: 0.15-0.50%, Cr: 0.1-1.5%, Mo: 0.1-1.5%, Al: 0.005-0.50%, Ti: 0.005-0.50% and Nb: 0.003-0.50%, and comprising the following steps (1) to (5).(1) hot rolling with 40% or more of cross sectional reduction ratio,(2) finishing the hot rolling in a temperature range of 800-1100.degree. C.,(3) putting the manufactured steel pipe promptly in a complementary heating apparatus after the finish rolling, and complementarily heating at the temperature and time satisfying the following formula (a).(4) quenching the steel pipe immediately after taking out of the complementary heating apparatus, and(5) tempering the pipe at a temperature not higher than the Ac.sub.1 transformation point as the last heat treatment.23500.ltoreq.(T+273).times.(21+log t).ltoreq.26000 (a)where, T (.degree.C.) is a temperature of not lower than 850.degree. C., and t is time (hr). Further, an intermediate heat treatment consisting of quenching or combination of quenching and tempering may be applied between the steps (4) and (5).

    摘要翻译： PCT No.PCT / JP96 / 01274 Sec。 371日期：1998年2月5日 102（e）日期1998年2月5日PCT提交1996年5月15日PCT公布。 公开号WO96 / 36742 日期：1996年11月21日一种生产无缝钢管的方法，其中在一条生产线中进行管制造步骤和热处理步骤。 管道的性能与传统的再加热，淬火和回火工艺中制造的管材的性能相比甚至更好。 该方法的特征在于使用含有C：0.15-0.50％，Cr：0.1-1.5％，Mo：0.1-1.5％，Al：0.005-0.50％，Ti：0.005-0.50％的低合金钢和Nb ：0.003-0.50％，并且包括以下步骤（1）至（5）。 （1）以40％以上的横截面减速比进行热轧，（2）在800-1100℃的温度范围内完成热轧，（3）将制造的钢管迅速置于互补的加热装置中 精轧，并在满足下述式（a）的温度和时间下互补加热。 （4）在取出补充加热装置后立即淬火钢管，（5）在不高于Ac1相变点的温度下对管进行回火作为最后的热处理.23500

    Martensitic stainless steel
    14.
    发明授权
    Martensitic stainless steel 有权
    马氏体不锈钢

    公开(公告)号：US07767039B2

    公开(公告)日：2010-08-03

    申请号：US11335676

    申请日：2006-01-20

    申请人： Kunio Kondo ,  Hisashi Amaya

    发明人： Kunio Kondo ,  Hisashi Amaya

    IPC分类号： C22C38/18

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

    摘要： A martensitic stainless steel having a resistance to sulfide stress corrosion cracking superior to Super 13 Cr steel and having a strength and corrosion resistance comparable to dual phase stainless steels has a chemical composition consisting essentially of, in mass %, C: 0.001-0.1%, Si: 0.05-1.0%, Mn: 0.05-2.0%, P: at most 0.025%, S: at most 0.010%, Cr: 11-18%, Ni: 1.5-10%, sol. Al: 0.001-0.1%, N: at most 0.1%, O: at most 0.01%, Cu: 0-5%, solid solution Mo: 3.5-7%, the composition satisfying the following Equation (1), optionally at least one element selected from at least one of the following Groups A-C, and a remainder of Fe and impurities and undissolved Mo, if undissolved Mo is present. Ni-bal.=30(C+N)+0.5(Mn+Cu)+Ni+8.2−1.1(Cr+Mo+1.5Si)≧−4.5  Equation (1) Group A—W: 0.2-5% Group B—V: 0.001-0.50%, Nb: 0.001-0.50%, Ti: 0.001-0.50%, and Zr: 0.001-0.50% Group C—Ca: 0.0005-0.05%, Mg: 0.0005-0.05%, REM: 0.0005-0.05%, and B: 0.0001-0.01%.

    摘要翻译： 具有优于超级13Cr钢的具有耐硫化应力腐蚀开裂性且具有与双相不锈钢相当的强度和耐腐蚀性的马氏体不锈钢的化学成分基本上以质量％计含有C：0.001-0.1％ Si：0.05〜1.0％，Mn：0.05〜2.0％，P：0.025％以下，S：0.010％以下，Cr：11〜18％，Ni：1.5〜10％ Al：0.001-0.1％，N：0.1％以下，O：0.01％以下，Cu：0-5％，固溶Mo：3.5〜7％，满足下述式（1）的组成， 选自以下组AC中的至少一个的元素，以及余量的Fe和杂质以及未溶解的Mo，如果不溶解的Mo存在。 Ni-bal = 30（C + N）+0.5（Mn + Cu）+ Ni + 8.2-1.1（Cr + Mo + 1.5Si）≥-4.5等式（1）组A-W：0.2-5％ -V：0.001-0.50％，Nb：0.001-0.50％，Ti：0.001-0.50％，Zr：0.001-0.50％C-Ca：0.0005-0.05％，Mg：0.0005-0.05％，REM： 0.05％，B：0.0001-0.01％。

    Martensitic stainless steel
    16.
    发明申请
    Martensitic stainless steel 有权
    马氏体不锈钢

    公开(公告)号：US20050034790A1

    公开(公告)日：2005-02-17

    申请号：US10798855

    申请日：2004-03-12

    申请人： Hisashi Amaya ,  Kunio Kondo ,  Masakatsu Ueda ,  Keiichi Nakamura ,  Takahiro Kushida ,  Kazuyo Kushida

    发明人： Hisashi Amaya ,  Kunio Kondo ,  Masakatsu Ueda ,  Keiichi Nakamura ,  Takahiro Kushida ,  Kazuyo Kushida

    IPC分类号： C22C38/00 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/54 ,  C22C38/22

    CPC分类号： C22C38/44 ,  C22C38/001 ,  C22C38/002 ,  C22C38/04 ,  C22C38/42

    摘要： A martensitic stainless steel comprising C: 0.01-0.10%, Si: 0.05-1.0%, Mn: 0.05-1.5%, P: not more than 0.03%, S: not more than 0.01%, Cr: 9-15%, Ni: 0.1-4.5%, Al: not more than 0.05% and N: not more than 0.1% in mass %, and further comprising at least one of Cu: 0.05-5% and Mo: 0.05-5%, the residual being Fe and impurities, is provided, wherein the contents of Cu and Mo satisfy the following formula (a) or (b), 0.2%≦Mo+Cu/4≦5%  (a) 0.55%≦Mo+Cu/4≦5%  (b) and wherein the hardness is 30-45 in HRC and the carbide amount in grain boundaries of the prior austenite is not more than 0.5 volume %. The marensitic stainless steel has excellent properties regarding the sulfide stress cracking resistance, the resistance to corrosive wear and the localized corrosion.

    摘要翻译： 一种马氏体不锈钢，其包含C：0.01〜0.10％，Si：0.05〜1.0％，Mn：0.05〜1.5％，P：0.03％以下，S：0.01％以下，Cr：9〜15％，Ni ：0.1-4.5％，Al：0.05％以下，N：0.1质量％以下，进一步含有Cu：0.05〜5％和Mo：0.05〜5％中的至少一种，残留物为Fe 和杂质，其中Cu和Mo的含量满足下式（a）或（b），0.2％<= Mo + Cu / 4 <= 5％（a）0.55％<= Mo + Cu / 4 <= 5％（b），其中HRC中的硬度为30-45，并且原奥氏体的晶界中的碳化物量不大于0.5体积％。 锰矿不锈钢具有耐硫化物应力开裂性，耐腐蚀性和局部腐蚀性等优异性能。

    Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe
    17.
    发明授权
    Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe 有权
    埋管扩管用钢管，埋管扩孔油井钢管方法

    公开(公告)号：US07458426B2

    公开(公告)日：2008-12-02

    申请号：US11790874

    申请日：2007-04-27

    申请人： Yuji Arai ,  Kunio Kondo ,  Hisashi Amaya ,  Akihito Yamane

    发明人： Yuji Arai ,  Kunio Kondo ,  Hisashi Amaya ,  Akihito Yamane

    IPC分类号： E21B43/10 ,  E21B29/00 ,  C22C38/00

    CPC分类号： C22C38/02 ,  B21C1/24 ,  C21D9/085 ,  C22C38/04 ,  C22C38/12 ,  C22C38/22 ,  E21B43/103

    摘要： (1) A steel pipe that is expanded radially in a state wherein it was inserted in a well such as an oil well, characterized in that the non-uniform wall thickness ratio E0 (%) before expanding satisfies the following expression {circle around (1)}. E0≦30/(1+0.018α)  {circle around (1)} Wherein α is the pipe expansion ratio (%) calculated by the following expression {circle around (2)}. α=[(inner diameter of the pipe after expanding−inner diameter of the pipe before expanding)/inner diameter of the pipe before expanding]×100  {circle around (2)} (2) A steel pipe that should be expanded radially in a state wherein it is inserted in a well, such as an oil well, characterized in that the eccentric non-uniform wall thickness ratio is 10% or less.When the embedding-expanding method is performed with use of the steel pipe of (1) or (2), lowering of collapse strength of the expanded steel pipe is prevented and bending thereof can be decreased.

    摘要翻译： （1）一种钢管，其在将其插入诸如油井的井中的状态下径向膨胀，其特征在于，膨胀前的不均匀壁厚比E0（％）满足以下表达式{ E0 <= 30 /（1 + 0.018alpha）{圈内（1 <？in-line-formula description =“in-line-formula description =” 其中，α是通过以下表达式计算的管道膨胀率（％）{circle around（2. <？in-line-formula description =“In-line Formulas”end = α= [（膨胀后的管内径 - 膨胀前的管的内径）/扩管前的内径]×100 {圆周（2 <？在线配方说明=“ 在线公式“end =”tail“？>（2）在其插入诸如油井的井中的状态下应该径向膨胀的钢管，其特征在于，所述偏心不均匀壁厚 比例为10％以下 。 当使用（1）或（2）的钢管进行埋入膨胀方法时，防止扩大钢管的塌陷强度的降低，并且可以降低其弯曲。

    Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe
    18.
    发明申请
    Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe 有权
    埋管扩管用钢管，埋管扩孔油井钢管方法

    公开(公告)号：US20070199720A1

    公开(公告)日：2007-08-30

    申请号：US11790874

    申请日：2007-04-27

    申请人： Yuji Arai ,  Kunio Kondo ,  Hisashi Amaya ,  Akihito Yamane

    发明人： Yuji Arai ,  Kunio Kondo ,  Hisashi Amaya ,  Akihito Yamane

    IPC分类号： E21B19/16

    CPC分类号： C22C38/02 ,  B21C1/24 ,  C21D9/085 ,  C22C38/04 ,  C22C38/12 ,  C22C38/22 ,  E21B43/103

    摘要： (1) A steel pipe that is expanded radially in a state wherein it was inserted in a well such as an oil well, characterized in that the non-uniform wall thickness ratio E0 (%) before expanding satisfies the following expression {circle around (1)}. E0≦30 /(1+0.018α)  {circle around (1)}Wherein α is the pipe expansion ratio (%) calculated by the following expression {circle around (2)}. α=[(inner diameter of the pipe after expanding−inner diameter of the pipe before expanding)/inner diameter of the pipe before expanding]×100  {circle around (2)}(2) A steel pipe that should be expanded radially in a state wherein it is inserted in a well, such as an oil well, characterized in that the eccentric non-uniform wall thickness ratio is 10% or less. When the embedding-expanding method is performed with use of the steel pipe of (1) or (2), lowering of collapse strength of the expanded steel pipe is prevented and bending thereof can be decreased.

    摘要翻译： （1）一种钢管，其在将其插入诸如油井的井中的状态下径向膨胀，其特征在于，膨胀前的不均匀壁厚比E0（％）满足以下表达式{ <？in-line-formula description =“In-line Formulas”end =“lead”？> E0 <= 30 /(1+0.018alpha）{circle around（1 <？in-line-formula description =“ 其中，α是通过以下表达式计算的管道膨胀率（％）{circle around（2. <？in-line-formula description =“In-line Formulas”end = α= [（膨胀后的管内径 - 膨胀前的管的内径）/扩管前的内径]×100 {圆周（2 <？在线配方说明=“ 在线公式“end =”tail“？>（2）在其插入诸如油井的井中的状态下应该径向膨胀的钢管，其特征在于，所述偏心不均匀壁厚 比例为10％ s。 当使用（1）或（2）的钢管进行埋入膨胀方法时，防止扩大钢管的塌陷强度的降低，并且可以降低其弯曲。

    Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe
    19.
    发明授权
    Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe 有权
    埋管扩管用钢管，埋管扩孔油井钢管方法

    公开(公告)号：US07225868B2

    公开(公告)日：2007-06-05

    申请号：US10651941

    申请日：2003-09-02

    申请人： Yuji Arai ,  Kunio Kondo ,  Hisashi Amaya ,  Akihito Yamane

    发明人： Yuji Arai ,  Kunio Kondo ,  Hisashi Amaya ,  Akihito Yamane

    IPC分类号： E21B43/10 ,  E21B29/00 ,  C22C38/00

    CPC分类号： C22C38/02 ,  B21C1/24 ,  C21D9/085 ,  C22C38/04 ,  C22C38/12 ,  C22C38/22 ,  E21B43/103

    摘要： (1) A steel pipe that is expanded radially in a state wherein it was inserted in a well such as an oil well, characterized in that the non-uniform wall thickness ratio E0 (%) before expanding satisfies the following expression {circle around (1)}. E0≦30/(1+0.018α){circle around (1)} Wherein α is the pipe expansion ratio (%) calculated by the following expression {circle around (2)}. α=[(inner diameter of the pipe after expanding−inner diameter of the pipe before expanding)/inner diameter of the pipe before expanding]×100{circle around (2)} (2) A steel pipe that should be expanded radially in a state wherein it is inserted in a well, such as an oil well, characterized in that the eccentric non-uniform wall thickness ratio is 10% or less.When the embedding-expanding method is performed with use of the steel pipe of (1) or (2), lowering of collapse strength of the expanded steel pipe is prevented and bending thereof can be decreased.

    摘要翻译： （1）一种钢管，其在将其插入诸如油井的井中的状态下径向膨胀，其特征在于，膨胀前的不均匀壁厚比E0（％）满足以下表达式{ E0 <= 30 /（1 + 0.018alpha）{圈内（1 <？in-line-formula description =“in-line-formula description =” 其中，α是通过以下表达式计算的管道膨胀率（％）{circle around（2. <？in-line-formula description =“In-line Formulas”end = α= [（膨胀后的管内径 - 膨胀前的管的内径）/扩管前的内径]×100 {圆周（2 <？在线配方说明=“ 在线公式“end =”tail“？>（2）在其插入诸如油井的井中的状态下应该径向膨胀的钢管，其特征在于，所述偏心不均匀壁厚 比例为10％以下。 当使用（1）或（2）的钢管进行埋入膨胀方法时，防止扩大钢管的塌陷强度的降低，并且可以降低其弯曲。

    Martensitic Stainless Steel Oil Country Tubular Good
    20.
    发明申请
    Martensitic Stainless Steel Oil Country Tubular Good 有权
    马氏体不锈钢国家管状良好

    公开(公告)号：US20090098008A1

    公开(公告)日：2009-04-16

    申请号：US11792524

    申请日：2004-12-07

    申请人： Hisashi Amaya ,  Kunio Kondo ,  Masakatsu Ueda

    发明人： Hisashi Amaya ,  Kunio Kondo ,  Masakatsu Ueda

    IPC分类号： C22C38/20 ,  C22C38/18 ,  C22C38/22

    CPC分类号： C22C38/00 ,  C21D8/10 ,  C21D8/105 ,  C21D9/08 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/38 ,  C22C38/58

    摘要： A martensitic stainless steel oil country tubular good contains, by mass, 0.005% to 0.1% C, 0.05% to 1% Si, 1.5% to 5% Mn, at most 0.05% P, at most 0.01% S, 9% to 13% Cr, at most 0.5% Ni, at most 2% Mo, at most 2% Cu, 0.001% to 0.1% Al, and 0.001% to 0.1% N, with the balance being Fe and impurities, and the pipe has a Cr-depleted region under the surface. The martensitic stainless steel oil country tubular good according to the present invention does not have a passive film on the surface and corrodes wholly at low speed. In addition, the Ni content is reduced, which allows uneven corrosion to be prevented. Therefore, SCC can be prevented from being generated in spite of the presence of a Cr-depleted region.

    摘要翻译： 马氏体不锈钢油管状良好的质量含有0.005〜0.1％的C，0.05〜1％的Si，1.5〜5％的Mn，至多0.05％的P，最多0.01％的S，9〜13 ％Cr，最多0.5％Ni，至多2％Mo，最多2％Cu，0.001％至0.1％Al和0.001％至0.1％N，余量为Fe和杂质，管道为Cr - 表面下方的剥离区域。 根据本发明的马氏体不锈钢油管状管状体在表面上不具有钝化膜并且完全以低速腐蚀。 另外，Ni含量降低，能够防止不均匀的腐蚀。 因此，尽管存在Cr-贫化区域，也可以防止产生SCC。