Development of Laser/Arc Hybrid Welding and Control System

Abstract

In order to improve problems and make use of advantages of the arc welding and the laser welding processes, hybrid welding process combined the TIG arc with the YAG laser was studied. As an experimental result, it was confirmed that the shot position of the laser beam is very important to obtain sound welds in hybrid welding. Therefore, a new intelligent system to monitor the welding area using vision sensor is constructed. Furthermore, control system to shot the laser beam to a selected position in molten pool, which is formed by TIG arc, is constructed. As a result, it is confirmed that the hybrid welding process and the control system are effective on the stable welding of thin stainless steel plates.