Title

Metal Transfer and Arc Plasma in Gas Metal Arc Welding

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.

Department(s)

Mechanical and Aerospace Engineering

Sponsor(s)

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

Library of Congress Subject Headings

Electric welding

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2007 American Society of Mechanical Engineers (ASME), All rights reserved.

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