铝合金双光束激光焊接过程稳定性分析  

Process stability analysis of double beam laser welding of aluminum alloy

作　　者：杨海锋[1] 王旭友[1] 王威[1] 张甫[1] 

机构地区：[1]机械科学研究院哈尔滨焊接研究所,哈尔滨150028

出　　处：《焊接学报》2016年第6期13-18,129,共6页Transactions of The China Welding Institution

摘　　要：从成形、气孔、熔深的波动、激光匙孔、光致等离子体、飞溅等方面研究了铝合金高功率单光束激光和双光束激光焊接过程的稳定性.结果表明,在相同工艺参数下,双光束激光焊缝表面成形明显优于单光束,熔深的波动较单光束小;在相同工艺参数及相同熔深条件下,双光束焊缝气孔率较单光束小,小孔及等离子体的波动周期较单光束长,面积波动变异系数较单光束小,飞溅较单光束更加细小均匀.The stability of high power single beam laser and double beam laser welding process of aluminum alloy was studied from the aspects of the appearance of weld,porosity,fluctuation of penetration,keyhole,plasma,spatter and so on.The experimental results show that,under the same process parameters,the surface of the double beam laser welding is obviously better than that of the single beam,and the fluctuation of the penetration is smaller than that of the single beam. Under the same process parameters and the same depth of penetration condition,compared to single beam,double beam weld porosity rate is lower,the keyhole and plasma fluctuation cycle is longer,coefficient of variation of keyhole orifice area is smaller,spatters is finer and more uniform.

关 键 词：铝合金 双光束 激光焊接 稳定性 

分 类 号：TG456.7[金属学及工艺—焊接]