铝合金复合焊接工艺参数的优化

T. Jokinen, Petteri Jernstroem, M. Karhu, I. Vanttaja, V. Kujanpaeae
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引用次数: 15

摘要

据报道,将激光束和电弧结合起来的混合焊接比自激光焊接有许多优点。特别是在通过mig焊接的过程中由于添加了填充金属而导致被焊板的接头准备或固定不准确的情况下。此外,额外的热量,从电弧到过程,使更高的焊接速度和更深的渗透。实验材料为铝合金(AlMg3)。采用Nd:YAG焊和mig焊相结合的复合焊接工艺在平焊位置进行焊接。节理制备采用剪切剪切方式,采用不同间隙宽度。焊接实验采用田口法进行系统的统计实验。实验中的参数,如圆弧点和激光的对准,是不同的。并根据实验过程改变了两种焊接方法的特征参数。本文报道了焊接试验的结果以及所采用的参数。讨论了铝复合过程中出现的现象,指出了产生焊接缺陷的原因。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimization of parameters in hybrid welding of aluminum alloy
Numerous advantages of hybrid welding, in which laser beam and arc has combined, over autogenous laser welding has been reported. Especially in case of inaccurate joint preparation or fixturing of the plates to be welded because of the filler metal added to the process through MIG-welding. Also additional heat, coming from the arc to the process, enables higher welding speed and deeper penetration. Aluminum alloy (AlMg3) was used in the experiments. Welding was carried out by using the hybrid process (combination of Nd:YAG- and MIG-welding) in the flat position. The joint preparation was carried out as shear cut and different gap widths were used. Welding experiments were made systematically using a statistical experiment procedure called TAGUCHI-method. Parameters, for example alignment of point of arc and laser, varied in experiments. Also characteristic parameters of both welding methods were changed according to the experimental procedure. In this paper results of welding experiments are reported as well as parameters used. A phenomenona of the hybrid process with aluminum is discussed and also reasons for weld defects occurred are pointed out.
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