TIG AC welding of aluminum requires precise control of arc parameters, and the TELWIN TECHNOLOGY TIG 222 AC/DC provides the tools to meet this challenge. A key feature is the AC current balance adjustment, which allows optimization between penetration and oxide cleaning from the aluminum surface. Setting a higher proportion of the negative half-wave (greater cleaning) is ideal for heavily contaminated surfaces, while a higher proportion of the positive half-wave (greater penetration) provides deeper penetration.

In addition, the ability to adjust the frequency of the AC current (usually in the range of 50-200 Hz or more) allows the arc to be focused, resulting in a narrower weld, a smaller heat-affected zone and faster welding speeds. The higher frequency stabilizes the arc, which is especially beneficial when welding thin aluminum sheets. These advanced adjustment options give professionals full control over the process, enabling them to create welds of excellent quality, strength and aesthetics, even on difficult aluminum alloys.

The TIG Pulse welding function of the TECHNOLOGY TIG 222 AC/DC is a real breakthrough in precision joining of materials, especially thin and overheat-sensitive materials such as stainless steel and nickel alloys. Thanks to the fully adjustable pulse parameters – peak current (Ip), base current (Ib), pulse frequency (Hz) and pulse fill factor (%) – the welder is able to precisely dose heat energy to the weld pool.

The peak current ensures adequate fusion, while the base current allows controlled cooling and solidification of the weld. The result is a significant reduction in material distortion, better control of remelting (especially in forced positions) and the ability to achieve aesthetically pleasing, regular scale welds. Telwin also often implements the “” EASY PULSE “” function, which automatically selects the optimal pulse parameters, making it easier for less experienced welders while guaranteeing high quality. This is ideal for the food, chemical and aerospace industries, and wherever the highest precision is required.

TELWIN TECHNOLOGY TIG 222 AC/DC is not only a master TIG welder, but also a powerful and reliable MMA (shielded electrode) welding machine. With up to 180A of power, the welder can handle a wide range of rutile, alkaline, stainless steel or cast iron electrodes, with diameters up to 4.0 mm. This versatility will be appreciated by professionals working in different conditions and with different materials.

The device is equipped with key features to support MMA welding: Arc Force (dynamic short-circuit current control) prevents arc dimming and ensures arc stability, even with difficult electrodes or short arcs. Hot Start (hot start) increases the current at the beginning of welding, making it easier to ignite the electrode, especially with wet or cold materials. The Anti-Stick function automatically reduces the current if the electrode sticks to the material, protecting it from overheating and making it easier to detach. These intelligent systems make MMA welding easier, more efficient and the welds are of higher quality.

Professional welders often work in diverse conditions – from stationary workshops to construction sites and assembly work in the field. The TELWIN TECHNOLOGY TIG 222 AC/DC is designed for maximum mobility without compromising on performance. Its compact dimensions (430x170x340 mm) and relatively low weight (12.5 kg) make it easy to transport and maneuver the unit even in tight spaces.

The rugged IP23-rated housing provides adequate protection from dust and moisture, which is crucial when operating in harsher environments. The unit is also designed to be powered by generator power (with adequate power and voltage stabilization), further enhancing its versatility. Inverter technology not only contributes to weight and size reduction, but also ensures high energy efficiency, which translates into lower operating costs. No matter where your next job takes you, the TECHNOLOGY TIG 222 AC/DC is ready for action.