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MIG Weld Study Guide Questions and Answers 100% Verified
After an arc is struck, what protects the molten puddle from contamination due to 
elements in the air? - ️️Shielding Gas Cover 
What are the three things that have to adjusted to be in balance on a MIG welding 
machine? - ️️Voltage Control, Wire Feed Speed, and Shielding Gas Flow Rate. 
What does each digit of the electrode number stand for? - ️️E - electrode, R - rod, 
First two digits - tensile strength (by 1000 pounds), S - solid bare wire, Last digits - 
chemical composition var...
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