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Effect of welding process parameters on hybrid GMAW-GTAW welding process of AZ31B magnesium alloy

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Abstract

MIG-TIG double arc welding of magnesium alloy was studied in this paper. The effects of different welding process parameters (bypass current, wire extension, distance between the tungsten electrode, and the workpiece) on weld forming were analyzed, and the craft parameters were obtained through the technology experiment. The favorable forming weld was obtained at the total current of 225 A, bypass current of 140 A, welding voltage of 21 V, welding speed of 2.8 m/min, distance between end of tungsten electrode, and the workpiece of 5 mm. The effect of the process parameters on welding process and weld was analyzed to provide a theoretical basis for further improving the stability of double arc welding of magnesium alloy and obtaining the weld which was in high quality and good forming.

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Authors and Affiliations

  1. School of Mechanical Engineering, Nanchang University, Nanchang, 330031, China

    Xu Shen, Guohong Ma & Peng Chen

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  1. Xu Shen
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  2. Guohong Ma
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  3. Peng Chen
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Correspondence to Guohong Ma.

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Shen, X., Ma, G. & Chen, P. Effect of welding process parameters on hybrid GMAW-GTAW welding process of AZ31B magnesium alloy. Int J Adv Manuf Technol 94, 2811–2819 (2018). https://doi.org/10.1007/s00170-017-0954-1

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  • DOI: https://doi.org/10.1007/s00170-017-0954-1

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