What action should you take if the tungsten becomes contaminated?

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Enhance your TIG welding skills with the Nebraska GTAW FFA TIG Welding Exam. This exam features multiple choice questions and realistic scenarios to prepare you for success in TIG welding.

Multiple Choice

What action should you take if the tungsten becomes contaminated?

Explanation:
When tungsten gets contaminated, it can destabilize the arc and introduce impurities into the weld. The proper response is to stop welding, regrind the electrode to remove the contaminated surface, and clean it to remove oils or residues. If the contamination or damage is severe, you should replace the tungsten. This approach directly removes the contaminant and restores a clean, sharp tip for a stable arc. Simply continuing to weld or increasing gas flow won’t remove the contamination, and replacing the tungsten without regrinding/cleaning may not address the dirty surface.

When tungsten gets contaminated, it can destabilize the arc and introduce impurities into the weld. The proper response is to stop welding, regrind the electrode to remove the contaminated surface, and clean it to remove oils or residues. If the contamination or damage is severe, you should replace the tungsten. This approach directly removes the contaminant and restores a clean, sharp tip for a stable arc. Simply continuing to weld or increasing gas flow won’t remove the contamination, and replacing the tungsten without regrinding/cleaning may not address the dirty surface.

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