Welding aluminum and its alloys requires precise control of alternating current (AC), and the TELWIN SUPERTIG 302 AC/DC AQUA is a true master in this area. The ability to adjust the AC current balance plays a key role here. This allows you to precisely adjust the ratio between the positive half-wave (responsible for cathodic cleaning, i.e. removing oxides from the aluminum surface) and the negative half-wave (ensuring deep fusion). This allows the welder to obtain a perfectly clean weld with adequate penetration, minimizing the risk of defects.

Another important parameter is AC current frequency control. Higher frequencies (up to 200 Hz and more) allow for a more concentrated and stable arc, which is extremely useful when welding thin sheet metal, making fillet welds or working in hard-to-reach areas. This results in a narrower heat affected zone, less material distortion and a more aesthetically pleasing weld face. SUPERTIG 302 gives you the tools to create aluminum welds with quality comparable to the best industry standards.

Intense TIG welding, especially at the high currents required to join thicker materials, generates significant amounts of heat in the welding chuck. The integrated, high-performance AQUA water cooling system in the SUPERTIG 302 is the answer to this challenge. The cooling unit (G.R.A. – Gruppo Raffreddamento Acqua) actively circulates coolant through the specially designed TIG chuck, keeping its temperature at an optimal level.

For the professional, this means a number of specific benefits. First, a significant extension of the work cycle at maximum performance – you can weld for longer without interruption to the cooling of the handle. Second, increased comfort, as the handle of the chuck remains cool, reducing fatigue and allowing for better precision. Third, longer life of the chuck itself and its consumable parts, which translates into lower maintenance costs. The AQUA system is a guarantee of reliability and full readiness to work even in the toughest conditions.

The TELWIN SUPERTIG 302 AC/DC AQUA is not just about power, but more importantly about intelligent control of the welding process. The device offers a rich set of advanced TIG functions that allow you to tailor every aspect of the welding arc to the specific task at hand. The TIG Puls function is invaluable for welding thin materials, stainless steel or nickel alloys. It enables precise control of linear energy, minimizing distortion and the risk of burn-through, and allows you to achieve a distinctive, aesthetic weld appearance. The ability to adjust pulse frequency, pulse balance, and peak and base current gives the welder full flexibility.

In addition, functions such as the slope-up and slope-down time control ensure a smooth start and finish of welding, eliminating craters and defects at the ends of welds. Precise pre-gas and post-gas timing of the shielding gas ensures optimal protection of the weld pool and tungsten electrode from oxidation. The Bi-Level function allows quick switching between two defined welding current levels during operation, which is extremely useful for varying material thickness. All of these options, accessible through an intuitive panel, provide unparalleled control and repeatability, crucial for professional applications.