A Study on the Process Robustness of Nd:YAG Laser-MIG Hybrid Welding of Aluminum Alloy 6061-T6 (307)

摘要

Laser-arc hybrid welding is an attractive tool that has high potential in welding lightweight structure. The welding quality is improved by deep penetration with gap-bridging ability. This study examines the effectiveness an arc leading welding process through plasma phenomenon, melting efficiency and gap bridging ability experiment in melting pool. We apply hybrid welding using sheet aluminum welding to a vehicle body. We use 3KW cw Nd:YAG laser and 350A class MIG welding machine as an experiment device, high speed camera for melting phenomenon observation in melting pool and welding current measurement device for arc state observation.