活性剂对不锈钢YAG激光-电弧复合焊接的影响  

Effect of Activating Flux on YAG Laser-TIG Arc Hybrid Welded Stainless Steel

作　　者：潘晓冬[1] 刘金合[1] 包海涛[1] 徐韦锋[1] 朱石刚[2] 

机构地区：[1]西北工业大学材料学院 [2]中国人民解放军驻430厂军事代表室

出　　处：《航空制造技术》2010年第11期92-95,共4页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金(50675179)资助项目

摘　　要：以8mm厚的热轧态不锈钢1Cr18Ni9Ti为试验对象,分析了激光和电弧2种热源共同作用下单质活性剂(SiO2、TiO2、CaF2)对YAG激光-TIG电弧复合焊接的影响。结果表明:这3种活性剂都能不同程度地增加焊缝熔深,其中SiO2、TiO2可使熔深显著增加;结合电弧形态、测温曲线峰值温度综合分析发现,活性剂的加入使电弧收缩是增加焊缝熔深的主要原因,其次是活性剂对激光等离子体存在抑制作用,两者表现出激光-TIG电弧复合活性剂焊接的焊缝中心测温曲线的峰值温度与焊缝熔深以及深宽比同时增加。Under the combined action of the laser and arc, the effects of activating fluxes（SiO2, TiO2, CaF2） on YAG Laser-TIG Arc hybrid welded 1Cr18Ni9Ti stainless steel are studied. The results show that all three activating fluxes can deepen the welding penetration, and SiO2 and TiO2 can remarkably increase penetration. By comparison and analysis of arc shape, peak temperature of temperature testing curve.The arc shrinks are found in relation to using of activating fluxes, meanwhile. Activating flux can also effectively restrain laser plasma. Actually, The two factors increase peak temperature of temperature curves in weld center.And the weld penetration depth and aspect ratio increase at the same time.

关 键 词：活性剂 激光-TIG复合焊接 熔深 电弧形态 测温曲线 

分 类 号：V261.34[航空宇航科学与技术—航空宇航制造工程]