Undercut in MIG welding is caused by a combination of several factors, including the current, travel speed, and the type of wire being used. High current can cause the weld to penetrate too deeply, leading to an undercut. If the travel speed is too slow, the weld pool may become too large, resulting in an undercut.. An undercut is a groove melted into the base plate adjacent to the weld toe or weld root and left unfilled by weld metal. It weakens the joint, particularly when located in a highly stressed area, and can act as a crack initiation site. Undercut can be minimized or eliminated by proper techniques, electrode selection, and joint design.
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On this episode we tackle the problem of undercut and how to avoid it0:0:00 Intro0:2:48 welding0:8:07 results0:9:15 solutions to undercut0:10:27 Why undercut.. An undercut in welding is a type of weld defect that can occur when the weld reduces the cross-sectional thickness of the base metal. This can weaken the weld and cause it to fail. Undercuts can be caused by a variety of factors, including incorrect welding parameters, incorrect torch angle, or incorrect electrode size.
