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What does TIG stand for? correct answers Tungsten Inert Gas Define inert. correct answers Doesn't react with metals or other gases. Which gases are used for TIG? correct answers Argon, Helium, argon-helium, and argon-hydrogen What are the principal advantages of TIG? correct answers Heat and the addition of filler metal are independently controlled, and high-quality welds can be made, great for welding materials that oxidize quickly. What are the principal disadvantages of TIG? correct answers REQUIRES MORE SKILL, SLOWER WELDING PROCESS, BASE METALS MUST BE VERY CLEAN, SHIELDING GAS CAN BE EXPENSIVE. Within a GTAW torch, which part holds the electrode in place. correct answers Collet What is the diameter of a #8 GTAW nozzle? correct answers 2.4 mm, 3.2 mm, 4.0 mm, ½" nozzle size What types of radiation does GTAW produce? correct answers Ultraviolet and infrared List three common names for gas tungsten arc welding. correct answers TIG, MIG Collet body correct answers Contacts and centers the collet and transfers the electrical current to the collet. Collet correct answers Firmly hold the electrode and make an electrical connection to it. Back Cap correct answers Insulates and provides protection against shorting out the tungsten electrode. Tungsten correct answers Provides a path for current and it isn't susceptible to high temperatures. Nozzle correct answers A device that fits on the end of a welding gun to direct a shielding gas. Gas lens correct answers Makes the shielding gas exit the nozzle more as a column than as a turbulent stream. What is always the FIRST part attached when assembling a TIG torch? correct answers Collet Body What is always the LAST part attached when assembling a TIG torch? correct answers Back cap