1. Turn off the gas circuit device and cut off the power supply of the equipment.
2. Clean the welding bead, dust and debris in the welding area, and clean the robot body, electrical box and other parts. Make a record of the equipment inspection.
The application of welding robots should strictly control the preparation quality of parts and improve the accuracy of weldment assembly. The surface quality, groove size and assembly accuracy of the parts will affect the welding seam tracking effect. The quality of parts preparation and the accuracy of weldment assembly can be improved from the following aspects.
(1) Compile a special welding process for welding robots, and implement strict process regulations on the size of parts, weld grooves, and assembly dimensions. Generally, the tolerance of parts and groove dimensions is controlled within ±0.8mm, and the assembly dimension error is controlled within ±1.5mm. The probability of welding defects such as porosity and undercut in the weld can be greatly reduced.
(2) Use high-precision assembly tooling to improve the assembly accuracy of weldments.
(3) Welding seams should be cleaned, free of oil, rust, welding slag, cutting slag, etc., and solderable primers are allowed. Otherwise, it will affect the success rate of arc ignition. Tack welding is changed from electrode welding to gas shielded welding. At the same time, the spot welding parts are polished to avoid residual slag crusts or pores due to tack welding, thereby avoiding arc instability and even splashing.