Optimization of Laser-Arc Interspacing Distance during CO2 Laser-GMA Hybrid Welding by Using High-Speed Imaging
Laser welding has not easily been adopted in shipbuilding industry because of its poor gap bridging ability. Recently, laser-GMA hybrid welding process showed possibility to overcome the tight gap tolerance with improved productivity. The laser-arc hybrid welding process is inherently complex because it has three kinds of process parameters: arc welding, laser welding and hybrid welding parameters. In this study, welding phenomena were investigated to optimize the hybrid process parameter; interspacing distance between laser and arc. The bead surface and cross-sectional shapes were evaluated, and weld pool shape and droplet transfer were monitored by high speed camera to clarify welding phenomena.
Young Won Chang, Nack J. Kim and Chong Soo Lee
C. H. Kim et al., "Optimization of Laser-Arc Interspacing Distance during CO2 Laser-GMA Hybrid Welding by Using High-Speed Imaging ", Advanced Materials Research, Vols. 26-28, pp. 481-484, 2007