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从钨极摆动控制、钨极摆动轨迹分析、焊接过程中弧长调节等几方面介绍厚壁管窄间隙全位置焊接摆动钨极控制系统特点，其在实际管道全位置焊接中工作稳定可靠，达到设计要求
The characteristics of tungsten arc control system with all-position welding of narrow-gap narrow-gap are introduced from the control of tungsten oscillation, the analysis of tungsten wobble trajectory and the adjustment of arc length in the welding process. The method is stable and reliable in all-position welding of actual pipeline, Design requirements