Real-time monitoring of immobilized oxide defects on bead surface in welding of high-strength galvanized steel

摘要: Welding is widely used for joining steel components in the automobile industry. With use of high-quality materials, welding defects began to become increasingly complex. Immobilized oxide one recent complex defects. generated gas metal arc (GMAW) high-strength and galvanized result unpainted part on surface beads. Thus, it necessary be eliminated by using grinding peening. However, difficult find where oxides generate how order eliminate it. Few studies have explored mechanism immobilized formation other fields so far. In this study, generation patterns were confirmed. Further, an defect monitoring system GMAW was developed infrared camera image processing equipment. The chemical properties verified performing energy dispersive spectroscopy (EDS). appeared brighter image, then, conducted determine boundary processed images laid over original images, area displayed panel. Patterns confirmed when combined with following molten pool moving opposite direction our results. can easily applied automatic process