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RESEARCH PAPERS

Axisymmetric Nugget Growth During Resistance Spot Welding

[+] Author and Article Information
P. S. Wei, C. Y. Ho

Institute of Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan

J. Heat Transfer 112(2), 309-316 (May 01, 1990) (8 pages) doi:10.1115/1.2910377 History: Received December 01, 1987; Revised June 25, 1989; Online May 23, 2008

Abstract

Three-dimensional weld nugget growths for different welding currents, electrode tip shapes, and thickness ratios of workpieces are determined. By providing an effective model to estimate the heat generation at the faying surface between workpieces and taking into account the phase change due to melting, results show that the calculated weld nugget growth, nugget thickness, and shape of the nugget agree well with experimental data. Heat generation at the faying surface in the early stage of welding and joule heating at long weld times dominate the nugget growth. Consideration of radial heat loss is necessary at longer weld times and higher welding currents.

Copyright © 1990 by The American Society of Mechanical Engineers
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