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    • 1. 发明授权
    • Highly tough ERW steel pipe with distinguished sour resistance
    • 高耐磨ERW钢管具有卓越的耐酸性
    • US4804021A
    • 1989-02-14
    • US124863
    • 1987-11-24
    • Yasushi HasegawaHiroyo Haga
    • Yasushi HasegawaHiroyo Haga
    • C22C38/00C22C38/06C22C38/14C22C38/58E21B17/00F16L9/02
    • C22C38/14C22C38/06E21B17/00Y10S148/909
    • A highly tough, ERW steel pipe having a distinguished sour resistance is disclosed. The steel pipe is prepared from steel for production of ERW steel pipe containing 0.01 to 0.35% by weight of C; 0.02 to 0.5% by weight of Si; 0.1 to 1.8% by weight of Mn; more than 0.005% to 0.05% by weight of Al; 0.0005 to 0.008% by weight of Ca; 0.001 to 0.015% by weight of Zr; not more than 0.015% by weight of P; and not more than 0.003% by weight of S; a ratio of Zr/Al or (Ti+Zr)/Al being less than 2 by weight; or further containing (A) at least one of 0.2 to 0.6% by weight of Cu, 0.1 to 1.0% by weight of Ni and 0.2 to 3.0% by weight of Cr, and/or (B) at least one of 0.10 to 1.0% by weight of Mo, 0.01 to 0.15% by weight of Nb, 0.005 to 0.10% by weight of Ti and 0.01 to 0.15% by weight of V; the balance being Fe and impurities as a steel material; and the steel pipe has a welding part in which the content of Al.sub.2 O.sub.3 contained in inclusions at welding heat affected zone is not more than 50% by weight.
    • 公开了具有显着耐酸性的高韧性ERW钢管。 钢管由钢制成,用于生产含有0.01〜0.35重量%的C的ERW钢管; 0.02〜0.5重量%的Si; 0.1〜1.8重量%的Mn; 大于0.005重量%至0.05重量%的Al; 0.0005〜0.008重量%的Ca; 0.001〜0.015重量%的Zr; 不大于0.015重量%的P; 和不大于0.003重量%的S; Zr / Al或(Ti + Zr)/ Al的重量比小于2; 或进一步含有(A)0.2〜0.6重量%的Cu,0.1〜1.0重量%的Ni和0.2〜3.0重量%的Cr中的至少一种,和/或(B)0.10〜1.0中的至少一种 Mo的重量%,Nb:0.01〜0.15重量%,Ti:0.005〜0.10重量%,V:0.01-0.15重量% 余量为Fe,杂质为钢材; 并且钢管具有焊接热影响区的夹杂物中所含的Al 2 O 3的含量不大于50重量%的焊接部。
    • 4. 发明授权
    • Apparatus for monitoring and controlling a welding phenomenon in an
electric resistance welding
    • 用于监测和控制电阻焊接中的焊接现象的装置
    • US4254323A
    • 1981-03-03
    • US916075
    • 1978-06-16
    • Toshio TakamatsuHiroyo HagaKazuo AokiTakeshi Sato
    • Toshio TakamatsuHiroyo HagaKazuo AokiTakeshi Sato
    • B23K11/25B23K11/06
    • B23K11/252
    • An apparatus for monitoring and controlling a welding phenomenon in an electric resistance welding process, which comprises a welding characteristics measuring instrument for carrying out digital measurement of at least one of high frequency welding characteristics, a welding phenomenon monitor circuit for detecting variations in the welding characteristics, and a welding phenomenon controller circuit for automatically adjusting a parameter of a welding power source or other welding conditions, wherein the welding characteristics include an oscillating frequency and an oscillating period of a high frequency used for the welding, and a phase difference between a high frequency voltage and a current. Changes in the welding characteristics occur in correspondence with the occurrence of periodic fluctuations in the shape of the high frequency welding current circuit formed in the material to be welded during high frequency electric resistance welding process.
    • 一种用于监测和控制电阻焊接过程中的焊接现象的装置,其包括用于执行高频焊接特性中的至少一个的数字测量的焊接特性测量仪器,用于检测焊接特性变化的焊接现象监测电路 以及用于自动调整焊接电源的参数或其他焊接条件的焊接现象控制器电路,其中焊接特性包括用于焊接的高频的振荡频率和振荡周期,以及高频之间的相位差 频率电压和电流。 焊接特性的变化与在高频电阻焊接过程中形成在待焊接材料中的高频焊接电流电路的形状的周期性波动的发生相对应地发生。
    • 6. 发明授权
    • High toughness steel
    • 高韧性钢
    • US4842816A
    • 1989-06-27
    • US77976
    • 1987-07-27
    • Akihiro MiyasakaHiroyo HagaTakeshi Terasawa
    • Akihiro MiyasakaHiroyo HagaTakeshi Terasawa
    • C22C38/00C22C38/14C22C38/50C22C38/58
    • C22C38/14
    • A steel composition particularly suitable for the manufacture of electric resistance welded pipes for use in most hostile environments and able to display excellent sour resistance and high toughness. The aluminum content of the steel composition is reduced to not more than 0.005%, while from 0.006 to 0.2% in total of one or both of titanium and zirconium is used instead for steel containing 0.0005 to 0.008% Ca. The steel, apart from iron and unavoidable impurities further contains:0.01 to 0.35% C0.02 to 0.5% Si0.1 to 1.8% Mnnot more than 0.015% P, andnot more than 0.003% SCu, Ni, Cr, Mo, Nb and V may be added in appropriate amounts to enhance the steel performance.
    • 一种钢组合物,特别适用于制造用于大多数恶劣环境的电阻焊管,能够显示出优异的耐酸性和高韧性。 钢组合物的铝含量降低到不超过0.005%,而代替含有0.0005至0.008%Ca.a的钢代替钛和锆中的一种或两种,从0.006至0.2%。 除了铁和不可避免的杂质之外,钢还含有:0.01〜0.35%的C 0.02〜0.5%的Si 0.1〜1.8%的Mn不大于0.015%的P,不超过0.003%的S Cu,Ni,Cr,Mo,Nb 并且可以以适当的量添加V以提高钢的性能。