Gtaw - Study guides, Class notes & Summaries

True or False? Arc welding machines used for GTAW can be either AC and/or DC, but must supply a constant current. correct answers true In GTAW, a high frequency voltage is superimposed on the DC circuit for the purpose of ____ the arc. correct answers starting In a constant current volt-ampere curve, a large percentage change made in the voltage results in _____ percentage change in the current. correct answers a small High frequency is fed into the AC circuit during GTAW to stabilize t...

In gas tungsten arc welding with _____, approximately 70% of the heat is generated at the electrode and 30% on the workpiece. correct answers DCEN True or False? DCEN requires a larger electrode diameter than DCEP for the same current. correct answers False True or False? DCEP cleans surface oxides off aluminum or magnesium. correct answers True What diameter electrode, in inches, should be used to gas tungsten arc weld a lap joint in 1/8" carbon steel. correct answers 3/32" The in...

SENSE Module #7 GTAW Exam Questions with Answers.SENSE Module #7 GTAW Exam Questions with Answers.SENSE Module #7 GTAW Exam Questions with Answers.

Touch start Pilot arc High-frequency start Pulse start correct answers What are the four arc initiation methods? Sugaring correct answers What is the gray/flaked appearance on stainless steel welds known as? Nitrogen dioxide correct answers Which toxic gas only occurs within 6 inches of the welding arc? 15-35 CFH correct answers What is the suggested flow rate for argon according to the book? Hydrogen correct answers Aluminum is very susceptible to porosity caused by the prese...

WHICH HARMFUL GAS WILL BE PRODUCED FROM THE INTENSE UV RADIATION ON THE SURROUNDING AIR? Ozone ONE OF THE PRIMARY BENEFITS OF GTAW IS THE FACT THAT VENTILATION IS UNECESSARY TRUE OR FALSE False True or False GTAW PRODUCES MORE VISIBLE LIGHT RAYS THAN FCAW WELDING? True GTAW USES A CONSUMABLE ELECTRODE TRUE OR FALSE FALSE WHAT DOES THE TERM " AUTOGENOUS " MEAN IN RESPECT TO GTAW WELDING ? A WELD PRODUCED WITHOUT THE USE OF A FILLER ROD . WHAT METALS ...

Air-cooled torches use _____ to cool the electrode and the internal components of the torch. correct answers Shielding gas The _____ is designed for welding on light-gauge metals at less than 200A. correct answers Air-cooled torch The _____ is adjusted a necessary for different joints. correct answers Stickout The _____ is designed for welding at current levels above 200A. correct answers Water-cooled torch T/F: Post flow is the flow of shielding gas after the arc is extinguished. co...

How is TIG welding different from the other two Arc welding processes used in our shop? - ️️The electrode is not also the filler metal. You can control the amount of heat put into the weld during the welding process through the foot pedal. What is the temperature split between the positive and negative end of an arc? - ️️70% of the heat to the positive side (the side receiving the electrons) and 30% to the negative side (the side giving up the electrons) What is a weld? - ️️The...

2 % tungsten is what color? correct answers red inert gases are gases that do not react with ? correct answers other gases in the vicinity of the weld, stainless steal and nickle alloys using ____ as shielding gas for the AC GTAW operation one must contend with the less arc stability and less cleaning action? correct answers helium when the current is reduced or there is no current flowing during half of the AC cycle, the arc is said to be partially or completely? correct answers rectif...

What filler metals are not used for oxyacetylene welding correct answers Copper-coated mild steel Filler metal used for GTAW are similar in classification as those used for correct answers GMAW Filler metals must be of the same composition as the correct answers Base metal You do not always use filler metal when welding with the correct answers GTAW process The electrode classification EWP indicates a correct answers Pure tungsten electrode It is necessary to keep the hot end of t...

GTAW Exam 55 Questions with Verified Answers-2024 Update.GTAW Exam 55 Questions with Verified Answers-2024 Update.GTAW Exam 55 Questions with Verified Answers-2024 Update.