Which of the following common welding components are missing from ...

[faduma]

Which of the following common welding components are missing from the aluminum GTAW process,
  resulting in minimal corrosion from slag entrapment?
 
  a. Flux
  b. Argon
  c. Inert gas
  d. Backing gas

Question 2

When used for GTAW on aluminum pipe, a push angle provides base-metal cleaning is provided _____.
 
  a. by the action of the electrode
  b. by the action of the flux
  c. due to increased arc length and the DC voltage
  d. on the positive portion of the AC voltage cycle

[janieazgirl]

Answer to Question 1

a

Answer to Question 2

d

[faduma]

Thanks for the timely response, appreciate it

[Joy Chen]

Gracias!