TIG WELDING: (Tungsten Inert Gas) is an arc welding process with tungsten inert gas, with protection of inert gas; it can be better executed with or without aggregate input material. It provides high quality joints, but it requires high skilled operators. This technology was developped for the aircraft industry during the Second World War to replace the planes with reveted or welded joints (much higher given the same resistance).The main advantage of this welding consists in the addition of steel, among the parts to weld; the steel input does not depend on heat input, compared to wiring welding or consumable electrode. The bar of the material to add is kept constantly in the electrical arc under the protection of inert gas, to assure the best final result in terms of homogeneity and resistance.

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