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通过对 ＧＨ１１４０（δ＝１．６ ｍｍ）高温合金材料的小口径管压制成形、焊接的工艺试验，对坡口间隙、焊接速度、 气体保护等焊接重要因索进行了探讨，确定了单面焊双面成形填丝钨极氩弧焊的焊接方法．
Through the experiment of small diameter pipe of GH1140 (δ = 1.6 mm) superalloy, the important welding factors such as groove gap, welding speed and gas protection were discussed. Double side forming wire welding TIG welding method.