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The Influence of Leading Mode on the Stability of Plasma and Molten Pool in the Laser-MIG Hybrid Welding Process of Invar Alloy

Qiyu Gao1, Xiaohong Zhan1,*

1 Nanjing University of Aeronautics and Astronautics, 29 Jiangjun Avenue, Nanjing, 211106, China

* Corresponding Author: Xiaohong Zhan. Email: email

The International Conference on Computational & Experimental Engineering and Sciences 2024, 30(1), 1-1. https://doi.org/10.32604/icces.2024.012448

Abstract

Invar alloy is widely used in the field of aeronautical composite die manufacturing because it has a very low coefficient of thermal expansion, which is like that of composite material. The laser-MIG (Metal-Inert Gas) hybrid welding was developed to join 10 mm thick Invar alloy plates using Invar M93 filling wire. High speed camera equipment was used to observe plasma dynamic processes. Three-dimensional finite element models of laser-MIG hybrid welding process were established to solve the flow field of the molten pool by two leading modes. Elaborated on the flow behavior of the molten pool and the evolution mechanism of plasma under two leading modes. The results show that the MIG plasma under MIG leading mode contracts more and deviates towards the keyhole, which is mainly related to the degree of ionization of the metal vapor. The keyhole is deeper and more stable under MIG leading mode, while the keyhole fluctuates more significantly under laser leading mode. In addition, the simulation results are in good agreement with the experimental results. The state of microstructure verifies the interaction state between laser and MIG under two leading modes.

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Cite This Article

APA Style
Gao, Q., Zhan, X. (2024). The influence of leading mode on the stability of plasma and molten pool in the laser-mig hybrid welding process of invar alloy. The International Conference on Computational & Experimental Engineering and Sciences, 30(1), 1-1. https://doi.org/10.32604/icces.2024.012448
Vancouver Style
Gao Q, Zhan X. The influence of leading mode on the stability of plasma and molten pool in the laser-mig hybrid welding process of invar alloy. Int Conf Comput Exp Eng Sciences . 2024;30(1):1-1 https://doi.org/10.32604/icces.2024.012448
IEEE Style
Q. Gao and X. Zhan, “The Influence of Leading Mode on the Stability of Plasma and Molten Pool in the Laser-MIG Hybrid Welding Process of Invar Alloy,” Int. Conf. Comput. Exp. Eng. Sciences , vol. 30, no. 1, pp. 1-1, 2024. https://doi.org/10.32604/icces.2024.012448



cc Copyright © 2024 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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