Metal Transfer and Arc Plasma in Gas Metal Arc Welding
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Authors
Hu, Junling
Tsai, Hai-Lung
Issue Date
2007-08
Type
Article
Language
en_US
Keywords
Engineering , Temperature , Metals , Electric arcs , Plasmas (Ionized gases) , Gas metal arc welding (GMAW) , Electrodes , Pressure , Boundary-value problems , Equations , Force
Alternative Title
Abstract
This article analyzes the transient complex heat transfer and fluid flow in molten metal and arc plasma during the gas metal arc welding process. The model predicts the formation, growth, detachment, and transfer of droplets from the tip of a continuously fed electrode under the influences of several competing forces including gravity, electromagnetic force, arc pressure, plasma shear stress, and surface tension. Simulations were conducted for five different current levels to study the effects of current on the distributions of temperature, velocity, pressure, and current density in the droplet and/or the arc plasma. Agreement between the simulated results and published experimental data was obtained.
Description
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Citation
J. Hu, H. Tsai, "Metal Transfer and Arc Plasma in Gas Metal Arc Welding," Journal of Heat Transfer, vol. 129, no. 8, Aug. 2007.
Publisher
ASME