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Multi-impulse welding
From GAWDAwiki
Multi-impulse welding is the making of spot, projection and upset welds by more than one impulse of current. When alternating current is used, each impulse may consist of a fraction of a cycle or a number of cycles.[1]
Multiple-impulse welding can help control the rate of heat in at the interface. For galvanized steels, multiple-impulse welding allows zinc coating on the surface to escape from the interfaces before the nugget is formed.[2]



