The robot welding is argon-rich mixed gas maintenance welding, and the welding shortcomings presented in the welding process generally include welding deviation, undercut, porosity, etc., the specific analysis is as follows:
(1) The welding deviation may be due to the incorrect orientation of the welding or the problem of finding the welding gun. In this case, it is necessary to consider whether the TCP (torch center point bearing) is accurate and adjust it. If this situation is frequently presented, it is necessary to check the zero position of each axis of the robot, and re-calibrate it for correction.
(2) The undercut may be due to improper selection of welding parameters, the wrong sight of the welding torch or the orientation of the welding gun, and the size of the power can be appropriately adjusted to change the welding parameters, adjust the posture of the welding gun and the relative orientation of the welding gun and the workpiece.
(3) The porosity may be poor gas maintenance, the primer of the workpiece is too thick, or the maintenance gas is not dry enough, and it can be dealt with corresponding adjustments.
(4) Too much spatter may be due to improper selection of welding parameters, gas composition or too long extension length of welding wire, the size of the power can be appropriately adjusted to change the welding parameters, the gas ratio instrument can be adjusted to adjust the gas mixture share, and the relative orientation of the welding gun and the workpiece can be adjusted.
(5) An arc pit is formed at the end of the weld after cooling, and the function of submerged arc pit is added to the working step during programming, which can be filled.
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