Original document(12 pages) Authorized document(13 pages) 中文版
    The feature of the invented method is that the sprayed welds on the inner wall of pipe end with molybenum contained nickel base alloy powder material by using the modified type spray welding gun which uses enlarged powder bucket and eqipped with some rollers, and molybenum containing stainless steel welding electrode is used by adopting the single-face welding and double face forming to do the bottom welding. The invented method has the special property of low rate of alloy dilution in semi-fusion zone continuously high anti-corrosion, high bonding strength with steel pipe and steady operation of welding gun. It is suitable to use for patch welding treatment of anticorrosion of inner wall in small diameter infinite long steel pipes.
Application Number
92103755 Application Date
Title 名称 Anticorrosion weld repairing method for inner wall of welded joint region of small diameter steel pipeline
Publication Number
1066410 Publication Date
Approval Pub. Date Granted Pub. Date 1994.04.13
International Classification 分类号 B23K9/02,F16L13/02
Applicant(s) Name
Oil-field Construction Design Research Inst. Under Daqing Petroleum Administrati
Address 地址 163712
Inventor(s) Name 发明人 Ji Hanxiong, Ren Shencheng
Attorney & Agent 代理人 XING SHAOZHEN

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