Metal Transfer and Arc Plasma in Gas Metal Arc Welding
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.
J. Hu and H. Tsai, "Metal Transfer and Arc Plasma in Gas Metal Arc Welding," Journal of Heat Transfer, American Society of Mechanical Engineers (ASME), Aug 2007.
The definitive version is available at http://dx.doi.org/10.1115/1.2724847
Mechanical and Aerospace Engineering
GM R&D Center
Keywords and Phrases
Arc Welding; Arcs (Electric); Gravity Waves; Heat Transfer; Liquid Metals; Plasma Flow; Plasma Materials Processing; Plasma Pressure; Plasma Transport Processes; Surface Tension; Temperature Distribution; Electric welding
Article - Conference proceedings
© 2007 American Society of Mechanical Engineers (ASME), All rights reserved.