薄板铝合金焊接角变形动态行为研究
首发时间:2006-05-08
摘要:利用自主开发的焊接温度与变形实时测量系统,对薄板铝合金5A12氩弧焊接动态角变形过程进行了试验研究,探讨通过特征值来描述焊接角变形动态行为。通过对温度及变形动态曲线的分析,提出了焊接动态角变形过程的两个特征值,即下挠最大值点和上翘平衡点。并采用正交试验法,研究了不同焊接参数条件下动态角变形曲线的变化规律,利用回归分析构建了焊接角变形的动态特征曲线的数学模型。
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Investigation on the Characteristics of Dynamic Welding Angular Distortion of an Aluminum Alloy with TIG Welding
Abstract:The characteristics of dynamic welding angular distortions of aluminum alloy 5A12 with TIG welding are investigated by self-made welding dynamic temperature and distortion measuring system. With analyzing the welding thermal cycle and dynamic angular distortion curves in detail, two characteristic values, the maximum point and warping balanced point, are put forward to describe the dynamic curve behavior. For further investigation on the dynamic angular distortion behavior, the changing rules of the dynamic curves under different welding parameters are investigated by means of orthogonal experiment method. Based on the results, the numerical model on the dynamic angular distortion curve is introduced by regression analysis.
Keywords: aluminum alloy, dynamic deformation, dynamic characteristic values
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No.6528782811470616****
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