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LOW-MEDIUM STRENGTH UOE LINE PIPE EXCELLENT IN SULFIDE STRESS CRACKING RESISTANCE IN WELD ZONE
LOW-MEDIUM STRENGTH UOE LINE PIPE EXCELLENT IN SULFIDE STRESS CRACKING RESISTANCE IN WELD ZONE
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机译：焊接区中抗硫化物应力开裂的中低强度UOE线管
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摘要
PURPOSE: To obtain a low-medium strength UOE line pipe excellent in sulfide stress cracking resistance in the weld zone by producing a UOE line pipe having a specified componental compsn. in which Ca is added and the width of the group of oxide is limited. ;CONSTITUTION: A line pipe having a compsn. contg., by weight, 0.03 to 0.09% C, 0.1 to 0.4% Si, 0.5 to 1.0% Mn, ≤0.015% P, ≤0.0010% S, 0.010 to 0.050% Nb, 0.005 to 0.03% Al, 0.001 to 0.003% Ca and 0.005 to 0.025% Ti, satisfying the inequality of (%Ca) [1-98(%O)](%S)1.7 and in which, among oxides present in groups, the width of the group of CaO.Al2O3-based oxide is regulated to ≤200μ and the width of the group of Al2O3.SiO2-based oxide is regulated to ≤100μ is prepd. In this way, the line pipe of X 42 to 52 in an API grade having excellent sulfide stress cracking resistance in the weld zone in a humid hydrogen sulfide environment can be obtd.;COPYRIGHT: (C)1994,JPO
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机译：目的：通过生产具有指定成分的UOE管线管，获得在焊接区具有优异的抗硫化物应力开裂性的中强度UOE管线管。其中添加Ca并且限制了氧化物基团的宽度。 ;构成：具有组件的管线。以重量计，包括0.03-0.09％C，0.1-0.4％Si，0.5-1.0％Mn，≤0.015％P，≤0.0010％S，0.010-0.050％Nb，0.005-0.03％Al，0.001-0.003％ Ca和0.005-0.025％Ti，满足（％Ca）[1-98（％O）]（％S）> 1.7的不等式，并且在成组存在的氧化物中，CaO.Al的宽度将 2 O 3 基氧化物调节为≤200μ，Al 2 O 3 基团的宽度制备SiO 2 基氧化物≤100μ。用这种方法，可以制得API等级的X 42至52的管线管，该管线在潮湿的硫化氢环境中在焊接区具有优异的抗硫化物应力开裂性。; COPYRIGHT：（C）1994，JPO
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