Abstract
In gas metal arc welding (GMAW), current is one of the most important factors affecting the mode of metal transfer, weld pool dynamics and subsequently the weld quality. in this paper, the comprehensive model recently developed by the authors was used to study the effects of different current levels on the droplet formation, plasma generation, metal transfer, and weld pool dynamics in GMA welding. Two welding currents were studied, including one low current and one high current. at each current level, the transient temperature and velocity distributions of the arc plasma and the molten metal, and the shapes of the droplet and the weld pool were calculated. the results showed that a higher current generates smaller droplet size, higher droplet frequency, deeper weld penetration, and bigger weld pool.
Recommended Citation
J. Hu and T. L. Tsai, "Effects of Welding Current in Gas Metal Arc Welding," Collection of Technical Papers - 9th AIAA/ASME Joint Thermophysics and Heat Transfer Conference Proceedings, vol. 3, pp. 1820 - 1836, American Institute of Aeronautics and Astronautics, Jan 2006.
The definitive version is available at https://doi.org/10.2514/6.2006-3584
Department(s)
Mechanical and Aerospace Engineering
Publication Status
Full Access
International Standard Book Number (ISBN)
978-156347815-4
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 American Institute of Aeronautics and Astronautics, All rights reserved.
Publication Date
01 Jan 2006
