摘要
通过试验研究了Nd:YAG激光+脉冲GMAW复合热源焊接过程中焊接工艺参数对焊缝熔宽的影响。结果表明,复合热源焊缝熔宽随电弧功率和激光功率的增大而增大,随焊接速度的提高而减小,而光丝间距和离焦量对复合热源焊缝熔宽影响相对较小。复合热源焊缝熔宽远大于激光焊缝熔宽而仅稍大于脉冲GMAW焊缝熔宽,说明在复合热源焊接过程中脉冲GMAW决定焊缝熔宽,这主要是由于激光束加热区域远小于电弧加热区域造成的。试验结果的分析比较还表明,在激光+电弧复合热源焊接过程中激光功率的增大还极大地提高了焊接速度。
The influences of Nd: YAG laser +pulsed GMAW(gas metal arc welding) arc hybrid welding parameters on weld width were investigated by bead-on-plate tests.The results show that the hybrid weld width increases with the increase of arc power and laser power,and decreases with welding increased speed,while the laser-arc distance and defocusing distance have little influence on it.Hybrid weld is slightly wider than that of pulsed GMAW and much wider than that of laser welding for the same welding parameters,which indicates that hybrid weld width is determined for a given welding speed by pulsed GMAW arc power because the area heated by pulsed GMAW arc is much larger than that by laser beam.The analysis and comparison also show that laser can greatly improve the welding speed in hybrid welding process.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2006年第9期73-76,共4页
Transactions of The China Welding Institution
