CO_(2)激光-MAG电弧复合焊电弧能量对熔滴过渡特征和焊缝形貌的影响  

Effects of the Arc Energy on Droplet Transfer and Bead Shape in CO_(2) Laser-MAG Arc Hybrid Welding

作　　者：刘凯[1] 宋佳妮[1] Liu Kai;Song Jiani(Jilin Technology College of Electronic Information,Jilin,Jilin 132021,China)

机构地区：[1]吉林电子信息职业技术学院,吉林吉林132021

出　　处：《应用激光》2021年第1期154-160,共7页Applied Laser

摘　　要：以5.0 mm厚高强钢板为试验材料,采用CO_(2)激光-MAG电弧复合焊接方法,研究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,在激光功率P=1.6 kW、焊接速度v=1.2 m/min的情况下:当电弧电压U=26 V、焊接电流I<180 A时或焊接电流I=180 A、电弧电压U<24 V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;当电弧电压U≥24 V时或焊接电流I≥180 A时,熔滴的过渡模式为射滴过渡,且焊缝表面质量较好。In this essay, take the 5.0 mm thick high strength steel plate as the experimental material, and analyzes the weld shaping, process stability and droplets transfer characteristics of CO_(2) laser-MAG hybrid welding with different the arc energy. Experimental results show that, when the laser power P=1.6 kW, welding speed v=1.2 m/min, if 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 weld shaping is more smooth.

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 

分 类 号：TG456[金属学及工艺—焊接]