AWS Practice Test
AWS - American Welding Society Certification AWS AWS Welding Processes & Equipment
In GMAW (MIG welding), what is the primary function of the shielding gas?
Select your answer
A
To preheat the base metal
B
To protect the molten weld pool from atmospheric contamination (oxygen and nitrogen)
C
To increase the arc voltage
D
To serve as a flux carrier
Hint