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Research on the effect of weld groove on the quality and stability of laser-MAG hybrid welding in horizontal position

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Abstract

The laser-MAG hybrid welding in horizontal-vertical (PC) position was used to study the effect of different groove types on the quality of a root weld. Six combinations of bevel angles (50° + 0° (represents the groove angle of upper plate and lower plate respectively), 45° + 5°, 40° + 10°, 35° + 15°, 30° + 20°, and 25° + 25°) and root face sizes of 2 to 4 mm were designed. Hannover analyzer was used to collect electrical signals to analyze the stability of the horizontal-vertical position welding process. The results show that different combinations of groove angle have achieved one-sided welding with root formation. The groove angle has an obvious effect on the weld inclination and molten weld metal flowing down. The combination of bevel angles in which that of the lower plate is smaller than that of the upper plate was more conducive to avoid welding defects such as weld inclination and molten weld metal flowing down. The best groove angle combination was 30° + 20°, which allowed one-sided welding with root formation using a 4-mm root face.

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Authors and Affiliations

  1. Beijing University of Chemical Technology, Beijing, 102617, China

    Wang Kai & Jiao Xiangdong

  2. Beijing Institute of Petrochemical Technology, Beijing, 100029, China

    Wang Kai, Jiao Xiangdong, Zhu Jialei, Li Jingyang & Li Congwei

Authors
  1. Wang Kai
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  2. Jiao Xiangdong
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  3. Zhu Jialei
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  4. Li Jingyang
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  5. Li Congwei
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Correspondence to Jiao Xiangdong.

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Kai, W., Xiangdong, J., Jialei, Z. et al. Research on the effect of weld groove on the quality and stability of laser-MAG hybrid welding in horizontal position. Weld World 65, 1701–1709 (2021). https://doi.org/10.1007/s40194-021-01125-z

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  • DOI: https://doi.org/10.1007/s40194-021-01125-z

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