摘要
以5.0mm厚高强钢板为实验材料,采用Nd:YAG激光-MAG电弧复合焊接方法,研究了电弧电压与焊接电流的大小对复合焊接熔滴过渡特征、工艺稳定性和焊缝形貌的影响。结果表明:当激光功率P=2.5kW、焊接速度v=1.2m/min不变时,发现电弧电压U=24V,焊接电流I<180A时或当焊接电流I=180A,电弧电压U<24V时,熔滴过渡模式为短路过渡和颗粒过渡或是二者的混合过渡,且焊缝表面飞溅较多;焊接电流I≥180A时或电弧电压U≥24V时,熔滴的过渡模式为射滴过渡,且焊缝形貌较好。
In this essay,the experimental material is 5.0 mm thick high strength steel plate,and analyzes the weld shaping,process stability and droplets transfer characteristics of Nd：YAG laser-MAG hybrid welding with different the arc energy.Experimental results show that：when the laser power P=2.5 kW and welding speed v=1.2 m/min doesn＇t change.Found that when welding current I〈180 A,current voltage U=24 V,or welding current I=180 A current voltage U〈24 V,the transfer mode is short circuit transfer,or globular transfer,or transfer mode between short circuit and globular.When welding current I≥180 A,or current voltage U≥24 V,the transfer mode is spray transfer and the better appearance is visible.
出处
《应用激光》
CSCD
北大核心
2015年第3期344-350,共7页
Applied Laser
关键词
激光电弧复合焊接
熔滴过渡
熔滴过渡频率
焊缝形状
电弧能量
laser-arc hybrid welding
droplets transfer
frequency of droplets transfer
laser power
weld shapingy arc energy
