This automatic pipe welding machine can be used for all position welding of stainless steel pipes with a diameter of {{0}}mm and a wall thickness of 7.0-35.0mm, and adopts narrow gap wire filling TIG welding (single layer single pass welding process). The automatic control system of the welding machine adopts visual and auditory sensors, and the execution mechanism is controlled by a computer program to simulate the reactions and actions of skilled welders.

The working principle of adaptive control and quality monitoring system is that adaptive control mainly controls the position of the tungsten electrode relative to the groove edge, the position of the filler wire relative to the tungsten electrode, and the welding parameters that determine the size of the welding pool according to fuzzy logic rules, through real-time detection of information from visual sensors and computer image processing. The monitoring system for weld quality adjusts the size of the welding pool, shape of the weld bead, shape of the tungsten electrode tip, stability of arc combustion, and welding current in real-time based on the information of laser video sensors, auditory sensors, and current sensors to ensure consistency in weld quality.