Topic
Shielded metal arc welding
About: Shielded metal arc welding is a research topic. Over the lifetime, 4462 publications have been published within this topic receiving 40560 citations. The topic is also known as: manual metal arc welding & flux shielded arc welding.
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TL;DR: In this article, an attempt has been made to refine the fusion zone grains by applying pulsed current welding technique, which leads to relatively finer and more equi-axed grain structure in gas tungsten arc (GTA) and gas metal arc welding (GMA) welds.
40 citations
TL;DR: In this paper, the role of arc mode on laser-metal active gas (MAG) arc hybrid welding of mild steel was investigated, which was found that both the stability and mechanical properties of laser-CMT hybrid welding (LCHW) are the best, while those of laser standard short circuiting arc welding (LSHW) is the worst.
40 citations
TL;DR: In this article, the effect of the shielding gas concentration on the weld shape was studied for the moving bead on plate TIG welding of SUS304 stainless steel under He-O2 mixed shielding.
Abstract: The effect of the shielding gas concentration on the weld shape was studied for the moving bead on plate TIG welding of SUS304 stainless steel under He–O2 mixed shielding. The small addition of oxygen to the helium base shielding gas can precisely control the oxygen content in a liquid pool and the weld shape. Oxygen is a surface active element for stainless steel. When the oxygen content in the liquid pool is above the critical value of ∼ 70 ppm, the weld shape suddenly changes from a wide shallow type to a deep narrow one due to the change in the Marangoni convection from the outward to inward direction on the liquid pool surface. Weld shape variations influenced by the welding parameters including welding speed, welding current and electrode tip work distance under pure He and He–0.4%O2 mixed gas shielding were systematically investigated. The investigation results showed that the final shape of the TIG weld depends to a large extent on the pattern and magnitude of the Marangoni convection on t...
40 citations
TL;DR: In this article, the feasibility and microstructures of pure copper claddings produced on a pressure vessel A516 Gr. 70 steel plate, using friction stir welding versus gas metal arc welding, were compared.
40 citations