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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials: Design and Application >Experimental analysis of zero-gap laser welding of zinccoated steels in a lap joint configuration
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Experimental analysis of zero-gap laser welding of zinccoated steels in a lap joint configuration

机译：LAP关节构造Zinc Coate钢零间隙激光焊接的实验分析

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摘要

Automotive manufacturing requires high productive manufacturing technologies to ensure a high-volume efficient production. Joining metal sheets in an overlap joint configuration of zinc-coated steel is an important task for body-in-white production. This paper describes the influence of different spot sizes regarding process stability in laser beam welding. Therefore, welds were performed in an overlap joint configuration with fully penetrated welds. Relevant material combinations for automotive industry were investigated. A broad-based parameter study and the analysis of interaction between spot- and keyhole diameter state a higher process stability. Welds with a smaller spot diameter lead to a sufficient increase of joint quality by using a zero gap overlap configuration. It is shown that the amount of joint instabilities such as pores, pinholes, spatter and further defects can be minimized by using smaller spot diameters. This can be explained by different keyhole regimes. Moreover, the change of isothermal interaction in the interlayer zone caused by the adjusted spot diameter leads to high-quality joints.
机译：汽车制造需要高生产力制造技术，以确保高批量效率生产。在镀锌钢的重叠关节配置中加入金属板是适用于白色生产的重要任务。本文介绍了不同点尺寸关于激光束焊接过程稳定性的影响。因此，具有具有完全穿透的焊缝的重叠接头构造中进行焊接。调查了汽车工业的相关材料组合。基于广泛的参数研究和分数与钥匙孔直径状态之间的相互作用分析较高的过程稳定性。具有较小光斑直径的焊缝通过使用零间隙重叠配置来充分增加关节质量。结果表明，通过使用较小的点直径可以最小化诸如孔，针孔，喷溅和进一步的缺陷的关节稳定性的量。这可以通过不同的钥匙孔制度来解释。此外，由调节的光斑直径引起的中间层区域中的等温相互作用的变化导致高质量的接头。

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