Basic flux-cored wire for backingweld to T91 tube was studied in this paper.
研究了用于T91钢管打底焊的碱性渣系药芯焊丝。
2
Welding methods and technology of narrow gap quirk backingweld were discussed. Indirect quirk backingweld using manual hydrogen arc welding is considered as the best result.
讨论了窄间隙深槽打底焊焊接方法和工艺，认为用手工氩弧焊进行单面深槽打底焊效果最好。
3
They cause all the welding of double tubes, joint boxes and gas-collecting tubes to realize the backingweld of TAW-P. The quality of the double tube waste heat boilers have been improved.