GAS TUNGSTEN ARC WELDING - Practice Mode
1) How heat effected zone is covered and protected from atmospheric contaminations in GTAW?
Correct Answer: Argon gas
2) What is the use of a little hydrogen added to argon for welding of stainless steel in GTAW process?
Correct Answer: Improves heat transfer
3) How molten metal is shielded from the atmospheric contamination as a blanket in GTAW?
Correct Answer: By using inert gas
Explanation:
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4) How is the inert gas directed to flow over weld pool, in TIG welding?
Correct Answer: Through ceramic nozzle