铝合金5A12钨极氩弧焊板外变形的试验研究(英文)

Experimental Investigation on Out-of-Plane Distortion of Aluminum Alloy 5A12 in TIG Welding

通过自行研制的动态变形测量系统,对焊接过程板外变形进行实时测量。研究钨极氩弧焊接过程中,不同焊接条件下铝合金 5A12 板外变形动态过程及最终残余变形形态。分析板外变形动态过程及最终残余变形的产生机制及影响因素。结果表明,试板厚度和焊接热输入对焊接板外变形动态过程及最终残余变形有很重要的影响。残余板外变形分为,拱形、波浪形、碗形 3 种形态。

In this paper, the dynamic progress and residual distortion of out-of-plane of aluminum alloy 5A12 were investigated under different welding conditions of TIG welding. The dynamic out-of-plane distortion was measured by self-developed distortion measuring system. Out-of-plane distortion mechanism and the effecting parameters on distortion process were analyzed, and the effect of plate thickness and welding heat input on distortion was discussed. The results show that the plate thickness and welding heat input have great effect on the dynamic process and residual distortion of out-of-plane. The residual distortion of out-of-plane can be divided into three types including arch, buckling and bowling distortion.