What is the preweld defect of welding
Because of the pre-weld own characteristics, in the back of the welding operations, there often produce tumors, burn, wrong side, solder partial, broken weld (broken arc), weld reinforcement is too low or too high, porosity and slag and other defects. Among them burn, broken weld (broken arc) more likely to be found to take timely repair welding, generally does not have a significant impact on the internal and external welding quality.