Shiny, clean bead indication?

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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

Shiny, clean bead indication?

Explanation:
Shiny, clean bead indicates proper shielding and clean metal. In GTAW, a bright, smooth bead means the shielding gas is effectively covering the weld and the base metal was free of contaminants, allowing oxide-free solidification and good fusion. If gas flow is insufficient or the metal isn’t clean, oxidation or contamination tends to dull the bead, or create other defects. Porosity shows up as holes, undercut as a groove along the weld toe, and contamination often dulls or discolor the bead. So a bright, clean bead is the sign of correct gas coverage and clean metal.

Shiny, clean bead indicates proper shielding and clean metal. In GTAW, a bright, smooth bead means the shielding gas is effectively covering the weld and the base metal was free of contaminants, allowing oxide-free solidification and good fusion. If gas flow is insufficient or the metal isn’t clean, oxidation or contamination tends to dull the bead, or create other defects. Porosity shows up as holes, undercut as a groove along the weld toe, and contamination often dulls or discolor the bead. So a bright, clean bead is the sign of correct gas coverage and clean metal.

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