Influence of constructive materials, geometry and other variables on heat flow and output power of an air-cooled GTAW torch
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Director/aFuentes, Julio; Zschetzsche, J.
CenterEscuela Técnica Superior de Ingeniería Industrial
Knowledge AreaIngeniería Eléctrica
Most kinds of GTAW machines that are available in market are large, solid, expensive and with voluminous power sources. These great machines are water-cooled GTAW machines that require input power and water connections beside the electrical connections, making them heavier and less portable than other welding machines. It could be easily stated that the water-cooled machines´ disadvantages are advantages for air-cooled GTAW. Several producers, like racecar, street or building constructors, would prefer the features of air-cooled welder machines because they are smaller, lighter, and easy to move, less complexity with fewer expensive internal components and less maintenance. However, air-cooled GTAW has a disadvantage that water-cooled GTAW do not have, and it is that its amperage range is much shorter. That is, these machines cannot work with high current or over long times because the torch elements and internal electrical components tent to overheated. Mostly, all air-co ...
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