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Optimization of welding conditions for hot-wire GMAW with CO2 shielding on heavy-thick butt joint

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Abstract

The purpose of this study was to optimize the conditions of the gas–metal arc welding using CO2 shield gas (CO2 arc welding) with hot-wire feeding technology. A high-speed camera was used to investigate welding phenomena of a butt joint of 36-mm-thick steel plates. The optimum parameters were determined under combinations of the welding current (300 or 400 A) and hot-wire feeding speed (0 to 12.5 m/min) to avoid molten metal precedence. A sound joint was achieved with only four weld passes using optimum conditions. Adequate joint properties, including tensile strength and toughness, were obtained. The optimum conditions provided a welding process with both high efficiency and low heat input.

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Authors and Affiliations

  1. Graduate School of Engineering, Hiroshima University, Hiroshima, Japan

    N. Suwannatee, S. Wonthaisong & M. Yamamoto

  2. Tsuneishi Shipbuilding Co., Ltd, Hiroshima, Japan

    S. Shinohara

  3. Faculty of Engineering, Rajamangala University of Technology Krungthep, Bangkok, Thailand

    R. Phaoniam

Authors
  1. N. Suwannatee
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  2. S. Wonthaisong
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  3. M. Yamamoto
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  4. S. Shinohara
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  5. R. Phaoniam
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Correspondence to M. Yamamoto.

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Suwannatee, N., Wonthaisong, S., Yamamoto, M. et al. Optimization of welding conditions for hot-wire GMAW with CO2 shielding on heavy-thick butt joint. Weld World 66, 833–844 (2022). https://doi.org/10.1007/s40194-021-01227-8

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  • DOI: https://doi.org/10.1007/s40194-021-01227-8

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