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在厚壁管窄间隙全位置ＴＩＧ焊过程中，为了加强对熔池的控制，采用脉动送丝与钨极摆动同步控制技术，很好地解决了管道全位置焊接熔池稳定性的控制问题，其中所设计的脉动送丝系统具有灵敏度高、工作稳定、抗干扰能力强的优点，能够满足厚壁管全位置特殊焊接工艺要求．
In the narrow-gap all-position TIG welding process of thick-walled tube, in order to strengthen the control of the molten pool, the synchronous control technology of pulsating wire feeding and tungsten wobble is used to solve the control problem of all-position welding pool stability. The designed pulsating wire feeding system has the advantages of high sensitivity, stable operation and strong anti-interference ability, and can meet the requirements of the special position welding technology of the thick-walled tube.