Keywords
Citation
Rigelsford, J. (2003), "Resistance welding", Assembly Automation, Vol. 23 No. 2. https://doi.org/10.1108/aa.2003.03323bad.009
Publisher
:Emerald Group Publishing Limited
Copyright © 2003, MCB UP Limited
Resistance welding
Resistance welding
Keywords: Welding, Patent
Applicant: Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbG, GermanyPatent number: US6,448,532Publication date: 10 September 2002Title: Method for resistance welding metal parts
Current resistance welding techniques often result in poor weld quality when welding metal parts with soiled or roughened surfaces together. Therefore, an aim of this invention is to provide a resistance welding process for welding metal parts together where at least one of the parts has a soiled or roughened surface.
Initially, the metal parts to be welded together are overlapped and clamped into position between two welding electrodes. At least one of the electrodes is a circular cylinder that can rotate around its cylindrical axis. A suitable electric current is then passed between the electrodes as to cause the parts to be welded together. As the welding electrodes track the line to be welded, the sliding frictional force generated between the surface area of the circular cylinder and the metal part resting against it, cleans the surface of the metal part. The process is particularly well suited for welding sand-blasted molybdenum foils and tungsten wires together.