In GTAW, which statement is true about the tungsten electrode?

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Prepare for the GTAW Advanced Welding Exam. Use flashcards and multiple choice questions, each with hints and detailed explanations. Excel in the exam!

Multiple Choice

In GTAW, which statement is true about the tungsten electrode?

Explanation:
In GTAW the tungsten electrode is non-consumable: it provides the arc heat but stays intact, while any filler metal is added separately with a filler rod. Tungsten has a very high melting point, so it doesn’t melt into the weld pool or dissolve into the weld; the electrode tip may wear a bit from erosion, but it isn’t consumed as part of the weld metal. The shielding gas protects the weld from atmospheric oxygen, so the electrode isn’t consumed by oxygen.

In GTAW the tungsten electrode is non-consumable: it provides the arc heat but stays intact, while any filler metal is added separately with a filler rod. Tungsten has a very high melting point, so it doesn’t melt into the weld pool or dissolve into the weld; the electrode tip may wear a bit from erosion, but it isn’t consumed as part of the weld metal. The shielding gas protects the weld from atmospheric oxygen, so the electrode isn’t consumed by oxygen.

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