Table of Contents
ISRN Mechanical Engineering
Volume 2011, Article ID 824149, 7 pages
http://dx.doi.org/10.5402/2011/824149
Research Article

Effect of Welding Parameters on the Peak Load and Energy Absorption of Low-Carbon Steel Resistance Spot Welds

Materials and Metallurgical Engineering Department, Dezful Branch, Islamic Azad University, 64616-45169 Dezful, Iran

Received 18 January 2011; Accepted 8 March 2011

Academic Editors: A. J. Chamkha and P. Dineva

Copyright © 2011 M. Pouranvari. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Effect of process variables (electrode pressure, holding time, welding current, and welding time) on low-carbon steel resistance spot welds performance has been investigated in this paper. Failure mode, peak load, and maximum energy obtained in tensile-shear test have been used to describe spot welds performance. Excessive electrode pressure can reduce both peak load and maximum energy, considerably. Holding time does not significantly affect peak load and maximum energy for investigated material. Increasing welding time and welding current to some extent increases both peak load and maximum energy. However, excessive welding time and welding current not only do not increase weld nugget size and peak load, but also decrease maximum energy.