Q3
In TIG arc welding, the welding zone is shielded by an atmosphere of
A.
Helium gas
B.
Argon gas
C.
Either (A) or (B)
AnswerD.
None of these
Answer: Option C
Solution
Answer: Option C
Solution:
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