激光对脉冲MAG电弧辐射的影响  

Effect of laser on pulsed MAG arc radiation

作　　者：刘德深[1] 李桓[1] 王旭友[2] 王威[2] 高莹[3] 

机构地区：[1]天津大学天津市现代连接技术重点实验室,天津300072 [2]哈尔滨焊接研究所,哈尔滨150080 [3]天津职业技术师范大学天津市高速切削与精密加工重点实验室,天津300222

出　　处：《焊接学报》2011年第12期21-24,114,共4页Transactions of The China Welding Institution

基　　金：国家自然科学基金项目(51175374);国家"十一五"科技支撑计划资助项目(2006BAF04B10);天津市应用基础及前沿技术研究计划项目(09JCYBJC05000);天津市科技支撑计划重点项目(10ZCKFSF00200)

摘　　要：搭建了激光-脉冲MAG复合焊接系统和采集系统,分别在加激光和不加激光的条件下进行试验,得到了电信号和电弧光谱数据.运用线性拟合的方法,分析了FeII274.648,FeI382.043,FeI492.050,ArI801.479谱线的电弧能量输入和光谱辐射强度之间的关系.结果表明,四条特征谱线的光谱辐射与电弧的能量输入成正比例的关系.在相同的电弧能量输入下,激光-脉冲MAG复合焊的电弧辐射强度比脉冲MAG焊的电弧辐射强度小.这是由于激光束产生的金属蒸气与光致等离子体对电弧等离子体辐射的吸收造成的.The laser-pulsed MAG hybrid welding system and acquisition system were set up to get the electric signal and arc spectrum under the conditions with and without laser.To analyze the relationship between arc energy input and the spectral radiation intensity of FeII274.648,FeI382.043,FeI492.050 and ArI801.479 using the method of linear fit.Studies have shown that the spectral radiation intensity of the four feature spectrum lines are proportion to arc energy input.With the same arc energy input,the arc radiation intensity of hybrid welding is smaller than the one of pulsed MAG welding.This is because the metal vapor and plasma produced by laser may absorb the arc plasma radiation.

关 键 词：激光复合焊 能量输入 辐射强度 线性拟合 

分 类 号：TG403[金属学及工艺—焊接]