Seamless steel tubes and pipes for use in oil well
    1.
    发明申请
    Seamless steel tubes and pipes for use in oil well 审中-公开
    用于油井的无缝钢管和管道

    公开(公告)号:US20060231168A1

    公开(公告)日:2006-10-19

    申请号:US11387747

    申请日:2006-03-24

    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。

    High strength seamless steel pipe excellent in hydrogen-induced cracking resistance
    2.
    发明授权
    High strength seamless steel pipe excellent in hydrogen-induced cracking resistance 有权
    高强度无缝钢管耐氢腐蚀性能优良

    公开(公告)号:US07416617B2

    公开(公告)日:2008-08-26

    申请号:US11088740

    申请日:2005-03-25

    IPC分类号: C22C38/22 C22C38/28 C22C38/50

    摘要: A high strength seamless steel pipe having mgh yield stress and excellent hydrogen-induced cracking resistance, comprises by mass %, C: 0.03-0.11%, Si: 0.05-0.5%, Mn: 0.8-1.6%, p: 0.025% or less, S: 0.003% or less, Ti: 0.002-0.017%, Al: 0.001-0.10%, Cr: 0.05-0.5%, Mo: 0.02-0.3%, V: 0.02-0.20%, Ca 0.0005-0.005%, N: 0.008% or less and O (Oxygen): 0.004% or less, the balance Fe and impurities. The steel microstructure is bainite and/or martensite and ferrite is precipitated at grain boundaries. The seamless steel pipe can contain at least one of Cu: 0.05-0.5% and Ni: 0.05-0.5%. To produce the pipe, it is desirable to limit a starting temperature of quenching after rolling, a cooling rate and a tempering temperature.

    摘要翻译: 具有mgh屈服应力和优异的氢诱发开裂性的高强度无缝钢管以质量%计含有C:0.03〜0.11%,Si:0.05〜0.5%,Mn:0.8〜1.6%,p:0.025%以下 ,S:0.003%以下,Ti:0.002〜0.017%,Al:0.001〜0.10%,Cr:0.05〜0.5%,Mo:0.02〜0.3%,V:0.02〜0.20%,Ca:0.0005〜0.005% :0.008%以下,O(氧):0.004%以下,余量为Fe和杂质。 钢组织为贝氏体和/或马氏体,铁素体在晶界析出。 无缝钢管可以含有Cu:0.05〜0.5%,Ni:0.05〜0.5%中的至少一种。 为了制造管,优选限制轧制后的淬火起始温度,冷却速度和回火温度。

    High strength seamless steel pipe excellent in hydrogen-induced cracking resistance and its production method
    3.
    发明申请
    High strength seamless steel pipe excellent in hydrogen-induced cracking resistance and its production method 审中-公开
    高强度无缝钢管耐氢破坏性优良及其制备方法

    公开(公告)号:US20080283161A1

    公开(公告)日:2008-11-20

    申请号:US12219390

    申请日:2008-07-22

    IPC分类号: C21D9/08

    摘要: The present invention relates to a high strength seamless steel pipe excellent in hydrogen-induced cracking resistance, characterized by consisting of, by mass %, C: 0.03-0.11%, Si: 0.05-0.5%, Mn: 0.8-1.6%, P: 0.025% or less, S: 0.003% or less, Ti: 0.002-0.017%, Al: 0.001-0.10%, Cr: 0.05-0.5%, Mo: 0.02-0.3%, V: 0.02-0.20%, Ca: 0.0005-0.005%, N: 0.008% or less and O (Oxygen): 0.004% or less, and the balance Fe and impurities, and also characterized in that the microstructure of the steel is bainite and/or martensite, ferrite is precipitated at grain boundaries and yield stress is 483 MPa or more. Further, to ensure high strength of the steel, the seamless steel pipe preferably contains, by mass %, at least one of Cu: 0.05-0.5% and Ni: 0.05-0.5%. To produce the above-mentioned steel pipe, it is desirable to limit a starting temperature of quenching after rolling, a cooling rate and a tempering temperature. By this configuration a seamless steel pipe having an yield stress of 483 MPa or more and excellent HIC resistance, which is suitable for a pipeline, can be provided.

    摘要翻译: 本发明涉及氢诱发抗裂性优异的高强度无缝钢管,其特征在于以质量%计含有C:0.03-0.11%,Si:0.05-0.5%,Mn:0.8-1.6%,P :0.025%以下,S:0.003%以下,Ti:0.002〜0.017%,Al:0.001-0.10%,Cr:0.05〜0.5%,Mo:0.02〜0.3%,V:0.02〜0.20%,Ca: 0.0005-0.005%,N:0.008%以下,O(氧):0.004%以下,余量为Fe和杂质,其特征在于,钢的组织为贝氏体和/或马氏体,铁素体析出 晶界和屈服应力为483MPa以上。 此外,为了确保钢的高强度,无缝钢管优选以质量%计含有Cu:0.05〜0.5%和Ni:0.05〜0.5%中的至少一种。 为了制造上述钢管,优选限制轧制后的淬火起始温度,冷却速度和回火温度。 通过这种结构,可以提供一种适用于管道的屈服应力为483MPa以上,耐HIC电阻优异的无缝钢管。

    High strength seamless steel pipe excellent in hydrogen-induced cracking resistance and its production method
    4.
    发明申请
    High strength seamless steel pipe excellent in hydrogen-induced cracking resistance and its production method 有权
    高强度无缝钢管耐氢破坏性优良及其制备方法

    公开(公告)号:US20050167013A1

    公开(公告)日:2005-08-04

    申请号:US11088740

    申请日:2005-03-25

    IPC分类号: C21D8/10 C21D9/08

    摘要: A high strength seamless steel pipe having mgh yield stress and excellent hydrogen-induced cracking resistance, comprises by mass %, C: 0.03-0.11%, Si: 0.05-0.5%, Mn: 0.8-1.6%, P: 0.025% or less, S: 0.003% or less, Ti: 0.002-0.017%, Al: 0.001-0.10%, Cr: 0.05-0.5%, Mo: 0.02-0.3%, V: 0.02-0.20%, Ca: 0.0005-0.005%, N: 0.008% or less and O (Oxygen): 0.004% or less, the balance Fe and impurities. The steel microstructure is bainite and/or martensite and ferrite is precipitated at grain boundaries. The seamless steel pipe can contain at least one of Cu: 0.05-0.5% and Ni: 0.05-0.5%. To produce the pipe, it is desirable to limit a starting temperature of quenching after rolling, a cooling rate and a tempering temperature.

    摘要翻译: 具有mgh屈服应力和优异的氢诱发开裂性的高强度无缝钢管以质量%计含有C:0.03-0.11%,Si:0.05-0.5%,Mn:0.8-1.6%,P:0.025%以下 ,S:0.003%以下,Ti:0.002〜0.017%,Al:0.001-0.10%,Cr:0.05〜0.5%,Mo:0.02〜0.3%,V:0.02〜0.20%,Ca:0.0005〜0.005% N:0.008%以下,O(氧):0.004%以下,余量为Fe和杂质。 钢组织为贝氏体和/或马氏体,铁素体在晶界析出。 无缝钢管可以含有Cu:0.05〜0.5%,Ni:0.05〜0.5%中的至少一种。 为了制造管,优选限制轧制后的淬火起始温度,冷却速度和回火温度。