Manufacturing method for high strength steel pipe joint for oil well
    1.
    发明专利
    Manufacturing method for high strength steel pipe joint for oil well 有权
    用于油井的高强度钢管接头的制造方法

    公开(公告)号:JP2003071589A

    公开(公告)日:2003-03-11

    申请号:JP2001260895

    申请日:2001-08-30

    摘要: PROBLEM TO BE SOLVED: To provide a manufacturing method for a high strength oil well pipe by welding joining.
    SOLUTION: In conducting peripheral welding for end parts of high strength steel pipes having a base material structure containing C:0.03% or less, Si:0.70% or less, Mn:0.30-2.00%, Cr:10.5-15.0%, Ni:7.0% or less, N:0.03% or less, O:0.01% or less, and containing one or two kinds out of Nb:0.20% or less, V:0.20% or less, using a welding material containing C+N:0.3% or less, Si:1.0% or less, Mn:2.5% or less, Cr:10.5-24.0%, Ni:8.0% or less, or further one or two kinds out of Mo, Cu, and/or one or two kinds or more selected from Nb, Ti, Zr, B, W, and/or Ca, REM, the welding joining is conducted using a GTAW method of GMAW method. In welding using the GMAW method in a 100% inert gas, the welding material is preferably made to contain REM as the essential containment.
    COPYRIGHT: (C)2003,JPO

    摘要翻译: 要解决的问题:通过焊接来提供高强度油井管的制造方法。 解决方案:在具有C:0.03%以下的基体结构的高强度钢管的端部进行周边焊接时,Si:0.70%以下,Mn:0.30〜2.00%,Cr:10.5〜15.0%,Ni: 7.0%以下,N:0.03%以下,O:0.01%以下,含有1种或2种Nb:0.20%以下,V:0.20%以下,使用含有C + N的焊接材料: 0.3%以下,Si:1.0%以下,Mn:2.5%以下,Cr:10.5〜24.0%,Ni:8.0%以下,或者还有一种或两种以上Mo,Cu和/ 选自Nb,Ti,Zr,B,W和/或Ca,REM中的两种以上,使用GMAW法的GTAW法进行焊接。 在使用100%惰性气体中的GMAW法进行焊接时,焊接材料优选为含有REM作为必需的密封材料。

    Method for producing welded joint
    2.
    发明专利
    Method for producing welded joint 有权
    生产焊接接头的方法

    公开(公告)号:JP2003001423A

    公开(公告)日:2003-01-08

    申请号:JP2001185155

    申请日:2001-06-19

    摘要: PROBLEM TO BE SOLVED: To provide a method for producing a welded joint which has an excellent bead shape using a consumable electrode type gas-shieled arc welding method by which the falling of molten metal can be prevented in all position welding. SOLUTION: Welding is performed in such a manner that a steel wire containing 0.010 to 0.300 mass% rare earth elements and

    摘要翻译: 要解决的问题:提供一种使用消耗电极式气体电弧焊接方法具有优异的焊道形状的焊接接头的方法,通过该方法可以在所有位置焊接中防止熔融金属的落下。 解决方案:以使用含有0.010〜0.300质量%稀土元素和<= 0.01质量%O的钢丝作为自耗电极进行焊接,使用惰性气体作为保护气体,将焊接热输入 被控制为5.0〜25.0kJ / cm,能够防止熔融金属的落下,可以制造出具有优异的焊道形状的焊接接头,能够实现高效率的焊接。