Exam 17: Gas Tungsten Arc Welding of Plate

Oxides on ____ may prevent the molten weld pool from flowing together.

Failure to remove tungsten contamination properly will result in ____________________.

Carbide precipitation occurs in some stainless steels when they are kept at a temperature between ____ degrees Fahrenheit for a long period of time.

If the end of the filler rod is removed from the shielding gas protection, ____.

Which of the following is true of welding machine settings?

Mild steel weld coupons can have the welds removed using an OFC torch, but welds on stainless and aluminum coupons will have to be cut out with a(n) ____________________ torch.

The most common types of contaminants are ____.

Describe how the velocity of the shielding gas and the torch angle affects the protective zone.

In GTA welding, the torch may be angled ____ for better visibility.

In the GTAW process, contamination left on the metal will be deposited in the weld because ____.