METHOD FOR PRODUCING HIGH-STRENGTH Cr-Ni ALLOY SEAMLESS PIPE
    1.
    发明申请
    METHOD FOR PRODUCING HIGH-STRENGTH Cr-Ni ALLOY SEAMLESS PIPE 审中-公开
    生产高强度Cr-Ni合金无缝管的方法

    公开(公告)号:US20120031534A1

    公开(公告)日:2012-02-09

    申请号:US13245110

    申请日:2011-09-26

    IPC分类号: C21D9/08 C21D6/00

    CPC分类号: C21D8/10 C21D6/004 C22C1/002

    摘要: A method for producing a high-strength Cr—Ni alloy seamless pipe comprising preparing an alloy billet with a chemical composition consisting, by mass %, of C: 0.05% or less, Si: 1.0% or less, Mn: less than 3.0%, P: 0.005% or less, S: 0.005% or less, Cu: 0.01 to 4.0%, Ni: 25% or more and less than 35%, Cr: 20 to 30%, Mo: 0.01% or more and less than 4.0%, N: 0.10 to 0.30%, Al: 0.03 to 0.30%, O (oxygen): 0.01% or less, REM (rare earth metal): 0.01 to 0.20%, and the balance being Fe and impurities, and satisfying the formula N×P/REM≦0.10, wherein P, N and REM represent the contents (mass %) of P, N and REM, respectively. The pipe is hot worked using cross roll piercing, solution heat treated, and cold worked. The pipe is excellent in hot workability, stress corrosion cracking and does not laminate during cross piercing.

    摘要翻译: 一种高强度Cr-Ni合金无缝管的制造方法,其特征在于,以质量%计含有C:0.05%以下,Si:1.0%以下,Mn:小于3.0%的化合物组成的合金坯, ,P:0.005%以下,S:0.005%以下,Cu:0.01〜4.0%,Ni:25%以上且不足35%,Cr:20〜30%,Mo:0.01%以上且小于 4.0%,N:0.10〜0.30%,Al:0.03〜0.30%,O(氧):0.01%以下,REM(稀土金属):0.01〜0.20%,余量为Fe和杂质,满足 式N×P / REM≦̸ 0.10,其中P,N和REM分别表示P,N和REM的含量(质量%)。 管道采用横轧穿孔,溶液热处理和冷加工进行热加工。 该管材具有优异的热加工性,应力腐蚀开裂性,并且在交叉穿孔期间不层压。

    High strength Cr-Ni alloy material and seamless pipe for oil well
    2.
    发明授权
    High strength Cr-Ni alloy material and seamless pipe for oil well 有权
    高强度Cr-Ni合金材料和油井无缝管

    公开(公告)号:US08071020B2

    公开(公告)日:2011-12-06

    申请号:US12485270

    申请日:2009-06-16

    IPC分类号: C22C28/00 C22C38/42 C22C38/44

    摘要: A high strength Cr—Ni alloy material excellent in hot workability and stress corrosion cracking resistance, and seamless pipe for oil well application which consists of, by mass percent, C: 0.05% or less, Si: 0.05 to 1.0%, Mn: 0.01% or more and less than 3.0%, P: 0.05% or less, S: 0.005% or less, Cu: 0.01 to 4%, Ni: 25% or more and less than 35%, Cr: 20 to 30%, Mo: 0.01% or more and less than 4.0%, N: 0.10 to 0.30%, Al: 0.03 to 0.30%, O (oxygen): 0.01% or less, and REM (rare earth metal): 0.01 to 0.20% with the balance being Fe and impurities, and also satisfies the conditions in the following formula (1). N×P/REM≦0.40  formula (1) where P, N, and REM in the formula (1) respectively denote the contents (mass %) of P, N, and REM. The high strength Cr—Ni alloy material may further contain one or more types of W, Ti, Nb, Zr, V, Ca, and Mg, instead of part of Fe.

    摘要翻译: C:0.05%以下,Si:0.05〜1.0%,Mn:0.01%以下的质量%以上的油井用无缝管,耐热加工性和耐应力腐蚀开裂性优异的高强度Cr-Ni合金材料 %以上且小于3.0%,P:0.05%以下,S:0.005%以下,Cu:0.01〜4%,Ni:25%以上且小于35%,Cr:20〜30%,Mo :0.01%以上且小于4.0%,N:0.10〜0.30%,Al:0.03〜0.30%,O(氧):0.01%以下,REM(稀土金属):0.01〜0.20% 为Fe和杂质,也满足下式(1)的条件。 式(1)中的P,N,REM分别表示P,N,REM的含量(质量%),N×P / REM&nlE 0.40。 高强度Cr-Ni合金材料可以进一步含有一种或多种W,Ti,Nb,Zr,V,Ca和Mg而不是Fe的一部分。

    HIGH STRENGTH Cr-Ni ALLOY MATERIAL AND SEAMLESS PIPE FOR OIL WELL
    3.
    发明申请
    HIGH STRENGTH Cr-Ni ALLOY MATERIAL AND SEAMLESS PIPE FOR OIL WELL 有权
    高强度Cr-Ni合金材料和无缝管油

    公开(公告)号:US20090291017A1

    公开(公告)日:2009-11-26

    申请号:US12485270

    申请日:2009-06-16

    IPC分类号: C22C30/02

    摘要: [Object] To provide a high strength Cr—Ni alloy material excellent in hot workability and stress corrosion cracking resistance, and seamless pipe for oil well.[Solution] A high strength Cr—Ni alloy material which consists of, by mass percent, C: 0.05% or less, Si: 0.05 to 1.0%, Mn: 0.01% or more and less than 3.0%, P: 0.05% or less, S: 0.005% or less, Cu: 0.01 to 4%, Ni: 25% or more and less than 35%, Cr: 20 to 30%, Mo: 0.01% or more and less than 4.0%, N: 0.10 to 0.30%, Al: 0.03 to 0.30%, O (oxygen): 0.01% or less, and REM (rare earth metal): 0.01 to 0.20%, with the balance being Fe and impurities, and also satisfies the conditions in the following formula (1). N×P/REM≦0.40  formula (1) where P, N, and REM in the formula (1) respectively denote the contents (mass %) of P, N, and REM. The high strength Cr—Ni alloy material may further contain one or more types of W, Ti, Nb, Zr, V, Ca, and Mg, instead of part of Fe.

    摘要翻译: 本发明提供热加工性和耐应力腐蚀开裂性优异的高强度Cr-Ni合金材料,以及油井无缝管。 [方案]一种高强度Cr-Ni合金材料,以质量%计含有C:0.05%以下,Si:0.05〜1.0%,Mn:0.01%以上且小于3.0%,P:0.05%以上 较少,S:0.005%以下,Cu:0.01〜4%,Ni:25%以上且小于35%,Cr:20〜30%,Mo:0.01%以上且4.0%以下N:0.10 至0.30%,Al:0.03〜0.30%,O(氧)0.01%以下,REM(稀土金属):0.01〜0.20%,余量为Fe和杂质,也满足以下条件 公式1)。 NxP / REM其中,式(1)中的P,N和REM分别表示P,N和REM的含量(质量%)。 高强度Cr-Ni合金材料可以进一步含有一种或多种W,Ti,Nb,Zr,V,Ca和Mg而不是Fe的一部分。