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Improvement On The Resistance Spot Weldability of Aluminum Body Sheet
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1984 by SAE International in United States
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A method for improving resistance spot weldability is proposed based on creating a differential surface resistance between the sheet surfaces. The differential in surface resistance is achieved by an anodizing technique. Relationships between electrode life, differential surface resistance and differential oxide thickness have been established. Under the conditions used, optimum electrode life is achieved with a differential oxide thickness of some 330Å. This corresponds to a differential in surface resistance of approximately 50 × 103 micro-ohms. The treatment also produces an improvement in the consistency of weld performance. Although the method has so far only been tested and evaluated on a laboratory scale it is felt that the results offer sufficient insight into the mechanisms of aluminum spot welding to merit publication. The possibility of developing a commercial process based on these findings for the production of improved autobody sheet is under investigation.
|Technical Paper||Basic Phenomena in Resistance Spot Welding|
|Technical Paper||Optimizing Resistance Spot Welding on Aluminum-Alloy 6111 Autobody Sheet|
|Technical Paper||Resistance Welding Aluminum for Automotive Production|
CitationLeone, G. and Altshuller, B., "Improvement On The Resistance Spot Weldability of Aluminum Body Sheet," SAE Technical Paper 840292, 1984, https://doi.org/10.4271/840292.
- Roest, C.A., and Rager. D.D., Resistance Welding Parameter Profile for Spot Welding Aluminum, Welding J. 1974, Vol. 53, 529-S-536-S.
- Pilay, W., Rogala E.A., and Zulinski, E.J., Resistance Welding Aluminum for Automotive Production, SAE Paper 770305, March 1977.
- Wefers, K., Properties and Characterization of Surface Oxides on Aluminum Alloys. Aluminum (Germ), 57, 1981, (11), 722-726.
- Aluminum Association. Guidelines to Resistance Spot Welding Aluminum Automotive Sheet. T10.