TIG Welding Aluminium? Should You Use AC or DC
In this discussion, we will explore the distinctions between employing AC and DC welding currents for aluminum TIG welding . We'll address the feasibility of using DC welding and elucidate why AC welding has become the industry standard. Additionally, we'll delve into the hurdles encountered when TIG welding aluminum and examine the equipment utilized in the process. Why AC is Preferred for TIG Welding Aluminum In TIG welding aluminum , alternating current (AC) is typically preferred over direct current (DC). But why? When welding aluminum with TIG, AC is chosen because it alternates between positive and negative cycles. The positive cycle acts as a scrubbing effect on the surface, breaking up oxides that can impair weld quality. This is evident in the flawless welds we often admire in pictures. The negative cycle, on the other hand, facilitates weld penetration. Together, these cycles work in harmony to achieve high-quality welding re...