Chinese Optics Letters, 2008, 6 (1): 0147, Published Online: Jan. 29, 2008
Influences of laser in low power YAG laser-MAG hybrid welding process Download: 844次
激光-电弧复合焊接 电弧吸引及压缩效应 能量增强 焊接稳定性 350.2660 Fusion 350.3390 Laser materials processing 350.5400 Plasmas 140.3390 Laser materials processing
Abstract
The influences of laser defocusing amount Δz, laser power P, space distance DLA between laser and arc on weld penetration, arc modality and stability are investigated in low power YAG laser and metal active gas (laser-MAG) hybrid welding process. The experimental results indicate that the effects of laser-induced attraction and contraction of MAG arc are emerged in hybrid welding process, which result in the augmentation of hybrid welding energy. When DLA=-0.5-2 mm, Δz=-2-2 mm and P≥73 W, the synergic efficiency between laser and MAG arc is obvious, the cross section at the root of hybrid arc is contracted and the hybrid weld penetration is increased. The maximal ratio of hybrid/MAG weld penetration is 1.5 and the lowest YAG laser power that augments MAG arc is 73 W. The input of YAG laser makes the stabilities of arc ignition and combustion prominent in hybrid welding process.
Ruisheng Huang, Liming Liu, Fan Zhang. Influences of laser in low power YAG laser-MAG hybrid welding process[J]. Chinese Optics Letters, 2008, 6(1): 0147.