Nd:YAG-MAG激光电弧复合焊接线能量配比对焊缝成形与熔滴过渡特征的影响  

Effect of Line Energy Ratio on Bead Shape and Droplet Transfer in Nd: YAG-MAG Laser Arc Hybrid Welding

作　　者：薛川[1] 张宏[1] 

机构地区：[1]东北电力大学,吉林吉林132012

出　　处：《拖拉机与农用运输车》2015年第6期57-61,66,共6页Tractor & Farm Transporter

摘　　要：以5.0 mm厚高强度钢板为试验材料,分析Nd:YAG-MAG激光电弧旁轴复合焊接在相同线能量不同参数配比下的焊缝形貌、熔滴过渡特征、工艺稳定性电信号规律特征的差异研究。试验结果表明:在线能量相同激光能量配比较低时焊缝表面形貌较好,其中焊缝熔深主要受激光能量影响,焊缝熔宽主要受电弧能量影响。电弧能量配比较大时,熔滴过渡形态更稳定。电弧能量配比较低时,电信号呈现短路过渡且密度较大;激光能量配比过低时呈现的电信号与单独电弧焊效果相似。The paper took a 5 mm thick high strength steel plate as a experimental material, and analyzed the, weld shaping, droplet transfer characteristics,process stability and the welding electric signals in hybrid welding processes of Nd： YAG laser-MAG hybrid welding with different line energy ratios. Experimental results show that when the laser power is lower in line energy ratio, the better appearance is visible. And the arc power mainly affects the weld width, the laser power mainly affects the composite weld penetration. When the arc power is higher in hne energy ratio, the droplet transfer characteristics is more stable. When the arc power is lower in line energy ratio, the welding electric signals show a high density of the transfer mode and short circuit transfer. When the laser power is lower in line energy ratio, the welding electric signals of hybrid welding are similar to the effect of arc welding.

关 键 词：线能量 激光-电弧复合焊接 熔滴过渡 熔滴过渡频率 焊缝成形 汉诺威分析仪 

分 类 号：TG456.9[金属学及工艺—焊接]