Method for producing seamless steel pipe for oil wells excellent in sulfide stress cracking resistance
    1.
    发明授权
    Method for producing seamless steel pipe for oil wells excellent in sulfide stress cracking resistance 有权
    生产耐硫化物应力开裂性优良油井无缝钢管的方法

    公开(公告)号:US09017494B2

    公开(公告)日:2015-04-28

    申请号:US13212400

    申请日:2011-08-18

    摘要: A high-strength seamless steel pipe for oil wells excellent in sulfide stress cracking resistance which comprises, on the percent by mass basis, C: 0.1 to 0.20%, Si: 0.05 to 1.0%, Mn: 0.05 to 1.0%, Cr: 0.05 to 1.5%, Mo: 0.05 to 1.0%, Al: 0.10% or less, Ti: 0.002 to 0.05% and B: 0.0003 to 0.005%, with a value of equation “C+(Mn/6)+(Cr/5)+(Mo/3)” of 0.43 or more, with the balance being Fe and impurities, and in the impurities P: 0.025% or less, S: 0.010% or less and N: 0.007% or less. The seamless steel pipe may contain a specified amount of one or more element(s) of V and Nb, and/or a specified amount of one or more element(s) of Ca, Mg and REM. The seamless steel pipe can be produced at a low cost by adapting an in-line tube making and heat treatment process having a high production efficiency since a reheating treatment for refinement of grains is not required.

    摘要翻译: C:0.1〜0.20%,Si:0.05〜1.0%,Mn:0.05〜1.0%,Cr:0.05以下的耐硫化物应力开裂性优异的油井用高强度无缝钢管 至1.5%,Mo:0.05〜1.0%,Al:0.10%以下,Ti:0.002〜0.05%,B:0.0003〜0.005%,C +(Mn / 6)+(Cr / 5) +(Mo / 3)“为0.43以上,余量为Fe和杂质,杂质P:0.025%以下,S:0.010%以下,N:0.007%以下。 无缝钢管可以含有规定量的一种或多种V和Nb元素,和/或规定量的一种或多种Ca,Mg和REM元素。 通过适应不需要再精加工处理的再加热处理,可以通过适应生产效率高的在线制管和热处理工艺,以低成本制造无缝钢管。

    STEEL FOR STEEL TUBE WITH EXCELLENT SULFIDE STRESS CRACKING RESISTANCE
    2.
    发明申请
    STEEL FOR STEEL TUBE WITH EXCELLENT SULFIDE STRESS CRACKING RESISTANCE 有权
    具有优异的耐硫裂纹耐腐蚀性的钢管钢

    公开(公告)号:US20130084205A1

    公开(公告)日:2013-04-04

    申请号:US13702763

    申请日:2011-05-25

    摘要: The present invention provides a steel which simultaneously satisfies a plurality of characteristics, specifically, a steel for tubes with excellent sulfide stress cracking resistance, including, C: 0.2 to 0.7%; Si: 0.01 to 0.8%; Mn: 0.1 to 1.5%; S: not more than 0.005%; P: not more than 0.03%; Al: 0.0005 to 0.1%; Ti: 0.005 to 0.05%; Ca: 0.0004 to 0.005%; N: not more than 0.007%; Cr: 0. 1 to 1.5%; and Mo: 0.2 to 1.0%; the balance being Fe, Mg and impurities, being characterized in that: the content of Mg is not less than 1.0 ppm and not more than 5.0 ppm; and inclusions of not less than 50% of the total number of those in steel have such a morphology that Mg—Al—O-based oxides exist at the central part of the inclusion, Ca—Al-based oxides enclose the Mg—Al—O-based oxides, and Ti-containing-carbonitrides further exist on a periphery of the Ca—Al-based oxides.

    摘要翻译: 本发明提供一种同时满足多种特性的钢,具体地说,具有优异的耐硫化物应力开裂性的钢,其包括C:0.2〜0.7%, Si:0.01〜0.8% Mn:0.1〜1.5% S:不超过0.005%; P:不大于0.03%; Al:0.0005〜0.1% Ti:0.005〜0.05% Ca:0.0004〜0.005% N:不大于0.007%; Cr:0.1〜1.5% 和Mo:0.2〜1.0% 余量为Fe,Mg和杂质,其特征在于:Mg的含量不小于1.0ppm且不大于5.0ppm; 并且不少于钢总数的50%的夹杂物具有在夹杂物的中心部存在Mg-Al-O系氧化物的形态,Ca-Al系氧化物包围Mg-Al- O型氧化物和含Ti的碳氮化物进一步存在于Ca-Al系氧化物的周围。

    Low alloy steel for oil country tubular goods having high sulfide stress cracking resistance
    3.
    发明授权
    Low alloy steel for oil country tubular goods having high sulfide stress cracking resistance 有权
    具有较高硫化物抗应力开裂性能的油管式低合金钢

    公开(公告)号:US07670547B2

    公开(公告)日:2010-03-02

    申请号:US12007165

    申请日:2008-01-07

    IPC分类号: C22C38/00 C22C38/60 C22C38/22

    摘要: Low alloy steel for oil country tubular goods contains, in percentage by mass, 0.20% to 0.35% C, 0.05% to 0.5% Si, 0.05% to 0.6% Mn, at most 0.025% P, at most 0.01% S, 0.005% to 0.100% Al, 0.8% to 3.0% Mo, 0.05% to 0.25% V, 0.0001% to 0.005% B, at most 0.01% N, and at most 0.01% O, the balance comprising Fe and impurities, the steel satisfying Expression (1): 12V+1−Mo≧0 (1) where the symbols of elements represent the contents of the elements in percentage by mass. In this way, the steel according to the present invention has high SSC resistance.

    摘要翻译: 用于石油管状物品的低合金钢以质量%计含有0.20%至0.35%的C,0.05%至0.5%的Si,0.05%至0.6%的Mn,至多0.025%的P,至多0.01%的S,0.005% 至0.100%的Al,0.8%至3.0%的Mo,0.05%至0.25%的V,0.0001%至0.005%的B,至多0.01%的N和至多0.01%的O,余量包含Fe和杂质,满足表达式 (1):12V + 1-Mo≥0(1)其中元素符号表示元素的含量,以质量百分比表示。 这样,根据本发明的钢具有高的抗SSC性。

    Steel Product for Use as Line Pipe Having High Hic Resistance and Line Pipe Produced Using Such Steel Product
    4.
    发明申请
    Steel Product for Use as Line Pipe Having High Hic Resistance and Line Pipe Produced Using Such Steel Product 有权
    钢制产品用作具有高耐热性的管线和使用这种钢产品生产的管线

    公开(公告)号:US20070217942A1

    公开(公告)日:2007-09-20

    申请号:US10588122

    申请日:2004-06-17

    IPC分类号: C22C38/00

    CPC分类号: C22C38/02 C22C38/04

    摘要: A steel product for a line pipe according to the invention has a composition containing, in mass %, C : 0.03% to 0.15%, Si: 0.05% to 1.0%, Mn: 0.5% to 1.8%, P: 0.015% or less, S: 0.004% or less, O: 0.01% or less, N: 0.007% or less, sol. Al: 0.01% to 0.1%, Ti: 0.024% or less, Ca: 0.0003% to 0.02%, and the balance consisting of Fe and impurities. The size of TiN in the steel product for a line pipe is at most 30 μm. The steel product has high HIC resistance and its crack area ratio can be reduced to 3% or less.

    摘要翻译: 根据本发明的管线用钢产品具有质量%C:0.03〜0.15%,Si:0.05〜1.0%,Mn:0.5〜1.8%,P:0.015%以下的组合物 ,S:0.004%以下,O:0.01%以下,N:0.007%以下,溶胶。 Al:0.01〜0.1%,Ti:0.024%以下,Ca:0.0003〜0.02%,余量由Fe和杂质组成。 用于管道管道的钢制品中的TiN的尺寸至多为30μm。 该钢产品具有高HIC电阻,裂纹面积比可以降低到3%以下。

    Seamless steel pipe for oil wells excellent in sulfide stress cracking resistance and method for producing the same
    5.
    发明申请
    Seamless steel pipe for oil wells excellent in sulfide stress cracking resistance and method for producing the same 审中-公开
    耐硫化应力开裂性优良的油井用无缝钢管及其制造方法

    公开(公告)号:US20060266448A1

    公开(公告)日:2006-11-30

    申请号:US11494608

    申请日:2006-07-28

    IPC分类号: C21D9/08 C22C38/32

    摘要: A high-strength seamless steel pipe for oil wells excellent in sulfide stress cracking resistance which comprises, on the percent by mass basis, C: 0.1 to 0.20%, Si: 0.05 to 1.0%, Mn: 0.05 to 1.0%, Cr: 0.05 to 1.5%, Mo: 0.05 to 1.0%, Al: 0.10% or less, Ti: 0.002 to 0.05% and B: 0.0003 to 0.005%, with a value of equation “C+(Mn/6)+(Cr/5)+(Mo/3)” of 0.43 or more, with the balance being Fe and impurities, and in the impurities P: 0.025% or less, S: 0.010% or less and N: 0.007% or less. The seamless steel pipe may contain a specified amount of one or more element(s) of V and Nb, and/or a specified amount of one or more element(s) of Ca, Mg and REM. The seamless steel pipe can be produced at a low cost by adapting an in-line tube making and heat treatment process having a high production efficiency since a reheating treatment for refinement of grains is not required.

    摘要翻译: C:0.1〜0.20%,Si:0.05〜1.0%,Mn:0.05〜1.0%,Cr:0.05以下的耐硫化物应力开裂性优异的油井用高强度无缝钢管 至1.5%,Mo:0.05〜1.0%,Al:0.10%以下,Ti:0.002〜0.05%,B:0.0003〜0.005%,C +(Mn / 6)+(Cr / 5) +(Mo / 3)“为0.43以上,余量为Fe和杂质,杂质P:0.025%以下,S:0.010%以下,N:0.007%以下。 无缝钢管可以含有规定量的一种或多种V和Nb元素,和/或规定量的一种或多种Ca,Mg和REM元素。 通过适应不需要再精加工处理的再加热处理,可以通过适应生产效率高的在线制管和热处理工艺,以低成本制造无缝钢管。

    Steel and component of structural equipment for use in a hydrogen gas environment, and a method for the manufacture thereof
    6.
    发明申请
    Steel and component of structural equipment for use in a hydrogen gas environment, and a method for the manufacture thereof 审中-公开
    用于氢气环境的结构设备的钢和部件及其制造方法

    公开(公告)号:US20060191600A1

    公开(公告)日:2006-08-31

    申请号:US11297419

    申请日:2005-12-09

    IPC分类号: C23C8/10

    摘要: A steel which does not suffer from hydrogen embrittlement contains 0.3-30% of Cr as the base material, and has an oxide film having a thickness of 100 nm or more formed on its surface. The oxide film contains at least two elements selected among Fe, Cr and Al in the form of oxides, respectively in an amount of 5 atom % or more. The oxide film is formed through single-step or two-step heating wherein the steel is heated in the atmosphere at 600-900° C. for not less than 3 minutes but not more than 2 hours if necessary, and then heated in a hydrogen atmosphere at 700-1200° C. for not less than 3 minutes but not more than 2 hours while controlling the water vapor partial pressure within the range from 10−8 to 10−1 MPa. The steel is adapted for use in hydrogen gas environments, such as a container or other hardware.

    摘要翻译: 不具有氢脆性的钢含有0.3〜30%的Cr作为基材,并且在其表面形成有厚度为100nm以上的氧化膜。 氧化物膜以氧化物的形式含有选自Fe,Cr和Al中的至少两种元素,分别为5原子%以上。 氧化膜通过单步或两步加热形成,其中钢在大气中在600-900℃下加热不少于3分钟但不超过2小时,如果需要,然后在氢气 气氛在700-1200℃下进行不少于3分钟但不超过2小时,同时将水蒸气分压控制在10 -8至10 -1的范围内, SUP> MPa。 钢适用于氢气环境,如容器或其他硬件。

    Low carbon martensite stainless steel plate
    7.
    发明授权
    Low carbon martensite stainless steel plate 失效
    低碳马氏体不锈钢板

    公开(公告)号:US06220306B1

    公开(公告)日:2001-04-24

    申请号:US09447269

    申请日:1999-11-23

    IPC分类号: F16L900

    摘要: A hot rolled martensite stainless steel plate which is excellent in formability and corrosion resistance has a chemical composition comprising, by mass %, 0.05% or less carbon, 10 to 15% chromium, 0 to 3% molybdenum, 0 to 0.75% titanium, and 1 to 8% nickel, with the balance being iron and impurities, and has a yield stress of 110 ksi (758 MPa) or less and a specific amount of austenitic phase according to the plate thickness.

    摘要翻译: 成型性和耐腐蚀性优异的热轧马氏体不锈钢板具有质量%为0.05%以下的碳,10〜15%的铬,0〜3%的钼,0〜0.75%的钛,以及 1〜8%的镍,余量为铁和杂质,并且屈服应力为110ksi(758MPa)或更低,并且根据板厚度的特定量的奥氏体相。

    QUENCHING METHOD FOR STEEL PIPE
    10.
    发明申请
    QUENCHING METHOD FOR STEEL PIPE 有权
    钢管淬火方法

    公开(公告)号:US20140007994A1

    公开(公告)日:2014-01-09

    申请号:US14005853

    申请日:2012-03-13

    IPC分类号: C21D1/18 C21D1/19

    摘要: A method for quenching a steel pipe by water cooling from an outer surface thereof, where pipe end portions are not subjected to water cooling, and at least part of a main body other than the pipe end portions is subjected to water cooling. A region(s) that is not subjected to direct water cooling over an entire circumference thereof can be along an axial direction at least in part of the main body other than the pipe end portions. The start and stop of water cooling can be intermittent at least in part of the quenching. During the water cooling of the pipe outer surface, an intensified water cooling can be performed in a temperature range in which the pipe outer surface temperature is higher than Ms point. Thereafter, the cooling can be switched to moderate cooling so that the outer surface is cooled down to Ms point or lower.

    摘要翻译: 通过水管从其外表面进行水冷淬火的方法,其中管端部不进行水冷,至少部分管端部以外的主体进行水冷。 在其整个圆周上不经受直接水冷却的区域可以沿除了管端部以外的主体的至少一部分的轴向方向。 水冷却的开始和停止至少部分地可以是间歇性的淬火。 在管外表面的水冷却期间,可以在管外表面温度高于Ms点的温度范围内进行增强的水冷。 此后,可以将冷却切换到适度的冷却,使得外表面冷却至Ms点或更低。