铝合金超音频双脉冲调制VPTIG深熔焊接技术  

Ultrasonic Double-Pulsed Deep Penetration VPTIG Welding for Aluminum Alloys

作　　者：从保强[1,2] 王义朋 齐铂金[1,2] 钟豪 胡鑫[3] CONG Baoqiang;WANG Yipeng;QI Bojin;ZHONG Hao;HU Xin(School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China;MIIT Key Laboratory of Aeronautics Intelligent Manufacturing,Beijing 100191,China;Sichuan Future Aerospace Industry LLC,Shifang 618400,China)

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191 [2]航空高端装备智能制造工信部重点实验室,北京100191 [3]四川明日宇航工业有限责任公司,什邡618400

出　　处：《航空制造技术》2018年第8期38-42,47,共6页Aeronautical Manufacturing Technology

基　　金：先进焊接与连接国家重点实验室开放课题(AWJ-17M-01);研究生创新实践基金项目(YCSJ-03-2015-03);北京市自然科学基金项目(3182020)

摘　　要：变极性钨极氩弧焊(VPTIG)因其低成本高质量的焊接工艺效果,广泛应用于铝及铝合金材料的焊接。为进一步提升VPTIG电弧热源的能量密度和穿透能力,基于自主研制的焊接电源系统,提出一种"超音频方波脉冲+低频脉冲"的双脉冲调制VPTIG电弧深熔焊接新方法,将其用于7~12mm Al-Cu和Al-Mg系列铝合金平板的焊接。初步试验结果表明,采用该方法进行铝合金中厚板焊接时,焊接过程稳定且可获得良好的焊接质量,通过调节电流波形参数可实现对焊缝熔深的准确控制。针对该电弧焊接新方法进一步开展工艺适用性及其相关理论基础研究将具有重要的理论和应用价值。Variable polarity tungsten inert gas arc welding(VPTIG)is widely used in the welding of aluminum and aluminum alloys,due to its low cost and high weld quality.In order to enhance the arc energy density and its penetration ability,a novel ultrasonic double-pulsed deep penetration VPTIG(DP-VPTIG)process was proposed in this paper.Al-Cu and Al-Mg series aluminum alloy plates were employed as base materials.The preliminary experimental results show that the stable process and good welding quality can be obtained when DP-VPTIG is employed to weld aluminum alloy plates,and also the precise control of weld penetration can be achieved by adjusting the pulsed current characteristic parameters.It is very significant and valuable to carry out the applicability and related theoretical study for the novel DP-VPTIG process,which can be employed in the welding fabrication of aluminum alloy plates and show a good application prospect.

关 键 词：铝合金中厚板 超音频双脉冲调制 电流波形参数 深熔 变极性钨极氩弧焊 

分 类 号：TG457.14[金属学及工艺—焊接] V261.34[航空宇航科学与技术—航空宇航制造工程]