GMAW电弧对Nd∶YAG激光传输的影响  

Effect of GMAW arc on Nd:YAG laser refraction

作　　者：王威[1] 林尚扬[1] 王旭友[1] 朱成禹[2] 雷震[1] 

机构地区：[1]哈尔滨焊接研究所,哈尔滨150080 [2]哈尔滨工业大学,哈尔滨150001

出　　处：《焊接学报》2010年第2期41-44,共4页Transactions of The China Welding Institution

基　　金：国家科技支撑计划(2006BAF04B10);黑龙江省自然科学基金项目(ZJG0601)

摘　　要：针对脉冲过渡熔化极气体保护焊(gas metal arc welding,GMAW)电弧和短路过渡GMAW电弧,通过保持GMAW电弧正常态,Nd:YAG激光水平逐层、逐点扫描穿过脉冲电弧区域的试验方式,获得了Nd∶YAG激光穿过GMAW电弧后的激光折射和散射结果.试验发现,波长为1.064μm的Nd∶YAG激光穿过脉冲GMAW电弧激光光斑会略微变小,并且不同电弧区域对激光的影响能力基本相同;激光穿过短路GMAW电弧后激光光斑也会略微变小,不同电弧区域对激光的影响也基本相同.结果表明,GMAW电弧可以近似看作各项同性的激光传输介质,还可以近似认为GMAW电弧对波长1.064μm的Nd:YAG激光是透明的.By keeping gas metal arc welding (GMAW) arc normal position and Nd:YAG laser parallel crossing GMAW arc, refrangibility of GMAW arc to Nd:YAG laser was measured. The results indicate that when Nd:YAG laser crosses pulse GMAW arc, laser radius will decrease slightly. And the influence of pulse GMAW arc of different part to Nd:YAG is almost same. Similarly, when Nd:YAG laser crosses short-circuiting pulse GMAW arc, the radius of the laser will decrease slightly too. By considering this phenomenon from welding point of view, GMAW arc can be regarded as transparent substance and optic isotropy to Nd:YAG laser.

关 键 词：复合热源焊接 激光焊接 熔化极气体保护焊 激光散射 激光折射 

分 类 号：TG456.7[金属学及工艺—焊接]