Tests show that slowly rising condenser-discharge preheat current with rapidly rising welding current affords no less expulsion than rapidly rising welding current alone, and is inferior to slowly rising welding current alone; postheating had no effect on shear strength until current was sufficient to remelt welds.
Effect of preheating and postheating on quality of spot welds in aluminum alloys
Nat Advisory Committee Aeronautics -- Tech Note
1947
20 pages
Report
English
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Evaluation of friction spot welds in aluminum alloys
Automotive engineering | 2005
|Evaluation of Friction Spot Welds in Aluminum Alloys
SAE Technical Papers | 2005
|