Gaussian Pulsed Current Waveform Welding for Aluminum Alloys

Abstract

A new welding method, which uses a Gaussian current waveform with a smooth curve and concentrated energy input, was applied for welding of aluminum alloys of various thickness. Current peak modulation and base modulation models are proposed in the article. Five welding experiments were carried out using ER4043 1.2 mm aluminum wire, the results showing that the welding process was found to be stable, and that current and voltage waveforms were regular with no broken arcs or short circuits. Moreover, the arc voice sound was soft with low splatter. Weld seam surfaces were bright with regular scaly stripes and proper weld height and penetration.