In GTAW, at the arc between the electrode and the base metal, what happens to the base metal and the filler metal?

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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, at the arc between the electrode and the base metal, what happens to the base metal and the filler metal?

Explanation:
In GTAW, the heat from the arc melts the base metal to create a molten weld pool, and the filler metal is fed into that pool where it also melts and fuses with the base metal. The tungsten electrode used in GTAW is non-consumable, so it remains solid and does not melt away. So the molten weld pool consists of melted base metal and melted filler metal, while the electrode stays intact.

In GTAW, the heat from the arc melts the base metal to create a molten weld pool, and the filler metal is fed into that pool where it also melts and fuses with the base metal. The tungsten electrode used in GTAW is non-consumable, so it remains solid and does not melt away. So the molten weld pool consists of melted base metal and melted filler metal, while the electrode stays intact.

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