Abstract
Welding electrode arc welding, upside welding, single side welding, double side forming welding operation technology is the most difficult welding process in manual arc welding operation. It is an operation technology that senior welding operators must master, and it reflects the technical level of the welding welder. . In this paper, the welding operation essentials and operation skills of backing welding, filling welding and cover welding are studied for the welding operation of the back welding test board, which creates a theoretical basis for the improvement of the welding operator's operation skills.
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