GTAW Flashcard Chapter 8 Notes

Front

What type of electrode is used in GTAW?

Back

Tungsten

Front

Which materials are suitable for GTAW due to their oxidation properties? Options: Iron and copper, Aluminum and magnesium, Gold and silver, Lead and zinc

Back

Aluminum and magnesium

Front

What is the early name for GTAW?

Back

Heliarc

Front

What is a common characteristic of materials suitable for GTAW?

Back

Oxidizing

Front

In DCEN, where is the majority of the heat concentrated?

Back

On the work piece.

Front

Why does DCEP require a larger size electrode?

Back

Higher current carried

Front

Which welding method is preferred for carbon and alloy steels?

Back

DCEN

Front

What happens during the background time in pulse arc welding?

Back

The torch is moved forward

Front

What is the purpose of moving the torch forward during background time?

Back

To cool the metal

Front

What happens to the current in downslope current?

Back

It decreases slowly