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介绍了采用氦-氩混合气体保护焊焊接黄铜制换热器管子与管板先胀后焊的焊接工艺,并将焊接结果与氩弧焊作了对比,还分析了氩弧焊、氩-氮混合气体保护焊、氦-氩混合气体保护焊成败的原因。
The welding process of helical - argon mixed gas shielded welding brazing heat exchanger tube and tube plate pre - expansion and post - welding was introduced. The welding results were compared with that of argon arc welding. The effects of argon arc welding, argon - Nitrogen mixed gas shielded welding, helium - argon gas welding success or failure of the reasons.