Exam 17: Gas Tungsten Arc Welding of Plate

Using a ____ arc current setting with ____ travel speeds is important when welding stainless steel.

The greater the contamination of a stainless steel weld, ____ of the bead after the weld.

As the gas flows out of the torch it must form a(n) ____________________ around the weld.

​When might the GTAW process be used to make only the root pass on a pipe weld?

Which of the following is true of tungsten contamination?

When a weld is contaminated by the tungsten touching the molten weld pool, ____ before resuming welding.

The gas preflow and postflow times depend on which of the following?

Carbide precipitation is the combining of ____.

With ____, lack of cleanliness may cause the weld pool to show overheating and poor gas coverage.

____ is inexpensive and requires the least amount of cleaning.

When tungsten touches the molten weld pool, ____________________ pulls the contamination up onto the hot tungsten.

___________________ is GTA welded using an EWP, EWZr, EWCe-2, or EWLa-1 rounded tip tungsten, with the welding machine set for ACHF welding current.

Explain why the filler rod end must be kept inside the protective zone.

____ is somewhat affected by cleanliness, requiring little preweld cleaning.

A thick piece of metal that is used to absorb heat is also called a(n) ____________________.

​What are the Experiments in this chapter designed to do?

The torch may be angled for better visibility, and still have the proper shielding ____________________.

​Why is it important to keep your hands and gloves clean and oil free?

With ____, cleanliness is a critical factor.

With stainless steel, it is desirable to take the time and necessary precautions to make welds that are no darker than the color ____________________.