The tungsten inert gas (TIG) welding process which is applied with an active flux deposited on the work piece surface just before the welding was called as activated flux TIG (A-TIG) welding. The layer deposition can be achieved by brushing or spraying over the surface and welding is carried out after it dries out. This process has shown that it is possible to increase weld penetration and productivity up to three times higher or more compared to the TIG process in steels. In this review paper, A-TIG welding applications of steels were examined. The chemical composition and thickness of the flux, and welding parameters (welding current, welding speed, arc length, the shielding gas composition and its flow rate) affect the weld geometry. The activated flux welding mechanisms, effects of flux and welding parameters on weld geometry, microstructure and properties of A-TIG welds are explained.

中文翻译：

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奥氏体不锈钢的活性焊剂氩弧焊

钨极惰性气体（TIG）焊接工艺被称为活性焊剂TIG（A-TIG）焊接，该焊接工艺是在焊接之前将活性焊剂沉积在工件表面上。可以通过在表面刷涂或喷涂来实现层沉积，并在干燥后进行焊接。该过程表明，与钢中的TIG工艺相比，可以将焊缝熔深和生产率提高三倍甚至三倍以上。在这篇综述文件中，研究了钢的A-TIG焊接应用。焊剂的化学成分和厚度以及焊接参数（焊接电流，焊接速度，电弧长度，保护气体成分及其流速）会影响焊接的几何形状。激活的焊剂焊接机制，焊剂和焊接参数对焊缝几何形状的影响，