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Effect of plasma welding current on heat source penetration ability of plasma-GMAW hybrid welding

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Abstract

The weld penetration under different plasma welding currents was compared in the plasma-gas metal arc welding (GMAW) hybrid welding of aluminum alloy. When the plasma welding current was lower than 150 A, the hybrid welding penetration was greater than the sum of the single plasma welding and the single GMAW penetration. When the plasma welding current reached 130 A, with the increase of the plasma welding current, the advantage of the weld penetration of the hybrid welding was gradually weakened, compared with that of the single welding. The above change mechanism is revealed from heat source energy distribution and molten pool stress. The results show that when the plasma welding current is lower than 110 A, the area of the high-temperature region in the arc zone of GMAW in the hybrid welding increases, compared with that in the single GMAW. The trend of arc energy transfer to the penetration direction increases under the action of arc pressure, arc shear force, electromagnetic force, and droplet impact. With the increase of plasma welding current, the high-temperature area of the GMAW arc first increases and then decreases. When the plasma current reaches 130 A, the effect of arc pressure, arc shear force, electromagnetic force, and droplet impact on increasing the penetration begins to weaken.

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All the data generated or analyzed during this study are included in this published article.

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The codes used or analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

This work was financially supported by the National Natural Science Foundation of China (grant no. 51665044). The authors also received financial support from the Science and Technology Programs of Inner Mongolia (grant no. 2020GG0313), and the Natural Science Foundation of Inner Mongolia (grant no. 2019LH05017, 2021SHZR2300).

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Authors and Affiliations

  1. Key Laboratory of Material Forming, Inner Mongolia University of Technology, Hohhot, 010051, China

    Jiao Han, Yongquan Han, Zhenbang Sun & Haitao Hong

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  1. Jiao Han
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  2. Yongquan Han
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  3. Zhenbang Sun
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  4. Haitao Hong
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Contributions

Yongquan Han, and Jiao Han contributed to the conception of the study; Jiao Han and Haitao Hong performed the experiment; Jiao Han contributed significantly to the analysis and manuscript preparation; Jiao Han, Yongquan Han performed the data analyses and wrote the manuscript; Jiao Han, Yongquan Han, and Zhenbang Sun helped perform the analysis with constructive discussions.

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Correspondence to Yongquan Han.

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Han, J., Han, Y., Sun, Z. et al. Effect of plasma welding current on heat source penetration ability of plasma-GMAW hybrid welding. Int J Adv Manuf Technol 123, 1835–1844 (2022). https://doi.org/10.1007/s00170-022-10280-6

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  • DOI: https://doi.org/10.1007/s00170-022-10280-6

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