An investigation on plasma-MIG hybrid welding process of thick plate aluminum

IF 3.8 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Advanced Joining Processes Pub Date : 2024-01-18 DOI:10.1016/j.jajp.2024.100188

Toshifumi Yuji , Shinichi Tashiro , Hiroyuki Kinoshita , Kentaro Yasui , Toshio Bouno , Wu Ziang , Wu Dongsheng , Wittawat Poonthong , Syahril Azli Abdul Rahman , Sarizam Bin Mamat , Manabu Tanaka

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Abstract

Plasma-Metal Inert Gas (MIG) hybrid welding was employed to carry out bead on plate welding of an aluminum alloy A5052. The plasma arc was ignited to form a keyhole, and a series of welding systems were developed starting with MIG welding. The convective patterns within the weld pool were meticulously analyzed. In addition, we conducted experimental observations of the flow inside and on the surface of the pool, and we were able to visualize the flow in some areas. The results indicated that the plasma welding side formed a pool that seamlessly integrated the plasma side and the MIG side. At the same time, we observed the formation of a flow pool that integrates both plasma and MIG sides, affecting the formation and behavior of the weld pool. This study aims to provide a nuanced understanding of flow dynamics across the entire pool. This approach is geared towards refining the intricacies of weld pool dynamics for the advancement of welding technologies.

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厚板铝的等离子-MIG 混合焊接工艺研究

采用等离子-金属惰性气体（MIG）混合焊接技术对铝合金 A5052 进行了板上焊缝焊接。等离子弧被点燃以形成键孔，并从 MIG 焊接开始开发了一系列焊接系统。我们对焊接熔池内的对流模式进行了细致分析。此外，我们还对熔池内部和表面的流动情况进行了实验观察，并在某些区域实现了流动的可视化。结果表明，等离子焊接侧形成的熔池将等离子侧和 MIG 侧完美地结合在一起。同时，我们观察到等离子和 MIG 两侧形成了流动熔池，影响了焊接熔池的形成和行为。这项研究旨在提供对整个熔池流动动力学的细微理解。这种方法旨在完善焊池动力学的复杂性，以促进焊接技术的发展。

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