INTRODUCTION TO WELDING
gas tungsten arc welding. The filler metal for gas tung-sten arc welding is a hand fed consumable welding rod. Additional information about filler rods and elec-
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www.weldability-sif.comwelding and 2 % Zirconiated tungsten are recommended for AC welding. The diameter of the electrode is chosen to match the current required. For DC welding, a sharp point is required but for AC welding only, a small bevel is needed as the end of the electrode becomes rounded when the arc is operated. Shielding Gas The most commonly used gas for ...