Effects of Nd: YAG Laser+Pulsed MAG Arc Hybrid Welding Parameters on Its Weld shape

摘要

The effects of Nd:YAG laser+pulsed MAG arc hybrid welding parameters on the weld shape were investigated with bead-on-plate tests. The results indicated that the laser energy mainly decides the weld penetration and the weld width depends on the arc for a given welding speed. The Nd:YAG laser has a few effects on the hybrid weld appearance in varying of laser-arc distance and location of laser focus. The addition of laser energy in pulsed MAG arc welding can greatly increase its welding speed and the arc can improve the absorption of laser energy by workpiece. The test results also show that there is a matching relationship between the optimal laser- distance and welding current for a given laser energy.