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首页> 外文期刊>Welding in the World: Journal of the International Institute of Welding: Journal of the International Institute of Welding >Magnetic pulse welding-investigation on the welding of high-strength aluminum alloys and steels as well as the influence of fluctuations in the production on the welding results for thin metal sheets
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Magnetic pulse welding-investigation on the welding of high-strength aluminum alloys and steels as well as the influence of fluctuations in the production on the welding results for thin metal sheets

机译：磁脉冲焊接研究高强度铝合金和钢焊接的焊接以及生产在薄金属板焊接效果上的影响

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摘要

As there has been an increasing demand for cold welding methods recently, this offers the chance and possibility to use the potential of magnetic pulse technology to its full extent. This is especially the case when joining different materials (steel-aluminum sheet metal welds) and having to adhere to the specific requirements of lightweight constructions, thus, giving this welding method a particular role. In this paper and the oral presentation, results of a publicly funded project will be presented (AiF-Nr. 18290 N/P1029). The focus lies on the weldability of mixed-material combinations through magnetic pulse technology and its reproducibility. Tests showed that, aside from the influence of the surface properties, it is the mechanical properties and chemical composition of the materials that are especially important for the process stability. The generated process window illustrates the aforementioned, whereby the lower curve-surface preparation-can be adapted to meet fluctuations and tolerances in the production. On a secondary level, the robustness of the process is shown as regards fluctuations and tolerances of the process. The results show relevant differences, especially for the alignment of the welding partners as even a change in the discharge energy influences the weld results. The influence of deviations from the angle for a parallel alignment of the metal sheets, the influence of fluctuations in the gap, and the increase in discharge energy are determined and characterized through destructive tests with fragmentation pattern analyses. In sum, the results show the high potential of magnetic pulse welding for the joining of mixed materials and show a high reproducibility of the welding results.
机译：由于最近对冷焊接方法的需求越来越大，这提供了使用磁脉冲技术的潜能能力和可能性。尤其如同加入不同材料（钢 - 铝板金属焊接）并且必须粘附到轻质结构的特定要求，因此，使这种焊接方法具有特定作用。在本文和口头介绍中，将提出公共资助项目的结果（AIF-NR。18290 N / P1029）。重点在于通过磁脉冲技术及其再现性混合材料组合的可焊性。试验表明，除了表面性质的影响之外，它是对工艺稳定性尤为重要的材料的机械性能和化学组成。所生成的过程窗口示出了上述，由此较低的曲线表面制备 - 可以适于满足生产中的波动和公差。在次级水平上，该过程的稳健性显示在该过程的波动和容差方面示出。结果表明了相关的差异，特别是对于焊接伙伴的对准，因为即使放电能量的变化也会影响焊接结果。从金属板的平行对准角度的偏差的影响，通过具有碎片模式分析的破坏性测试来确定间隙中的波动的影响，以及放电能量的增加。总之，结果显示了用于混合材料的连接的磁脉冲焊接的高电位，并显示出焊接结果的高再现性。

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