Research on droplet transfer in MIG welding based on high-speed photography and FLUENT

JI Guangya; LI Ke; CHANG Hanwen; HU Jiarui; ZHANG Zizheng

doi:10.7513/j.issn.1004-7638.2025.04.025

Volume 46 Issue 4

Aug. 2025

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Article Navigation > IRON STEEL VANADIUM TITANIUM > 2025 > 46(4): 190-196

JI Guangya, LI Ke, CHANG Hanwen, HU Jiarui, ZHANG Zizheng. Research on droplet transfer in MIG welding based on high-speed photography and FLUENT[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(4): 190-196. doi: 10.7513/j.issn.1004-7638.2025.04.025

Citation:

JI Guangya, LI Ke, CHANG Hanwen, HU Jiarui, ZHANG Zizheng. Research on droplet transfer in MIG welding based on high-speed photography and FLUENT[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(4): 190-196. doi: 10.7513/j.issn.1004-7638.2025.04.025

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Research on droplet transfer in MIG welding based on high-speed photography and FLUENT

doi: 10.7513/j.issn.1004-7638.2025.04.025

School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi, China

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Received Date: 2024-11-27
Available Online: 2025-08-31
Publish Date: 2025-08-31

Abstract

Abstract

In order to study the droplet transfer behaviors during the MIG welding process of 304L stainless steel, a FLUENT numerical simulation software and high-speed photography system had been utilized to analyze the characteristics and frequency of droplet transfer at currents of 150, 180 A, and 260 A, respectively. The results show that the electromagnetic constriction force and the plasma drag force acting on the droplet both become dominant gradually with the increasing of welding current. As the droplet temperature rises gradually, the surface tension acting on the droplet decreases accordingly, which reduces the required gravity of the droplet to separate from the end of the welding wire. Consequently, the droplet diameter decreases and the transfer frequency increases gradually, presenting the modes of globular transfer, projected transfer and spray transfer in turn. Through the comparison between the high-speed video pictures and numerical simulation results of the three groups of welding currents, the similarity of experimental and the simulated values containing transfer period, characteristic time and droplet size exceeds 87%, 90%, and 91% respectively, indicating that the numerical simulation model adopted in this study has a relatively high reliability.
- MIG welding,
- droplet transfer,
- numerical simulation,
- high-speed photography,
- FLUENT software,
- 304L stainless steel

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References(13)

References

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