Discussion Forum : Workshop Technology
Question - In TIG arc welding, the welding zone is shielded by an atmosphere of
Options:
A .  Helium gas
B .  Argon gas
C .  Either (A) or (B)
D .  None of these
Answer: Option C
In TIG arc welding, The weld area and electrode is protected from oxidation or other atmospheric contamination by an inert shielding gas argon or helium

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