Which current type creates very shallow penetration for GTAW?

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Multiple Choice

Which current type creates very shallow penetration for GTAW?

Explanation:
In GTAW, how deep the weld penetrates depends on where the arc’s heat is concentrated, which is controlled by polarity. When the electrode is positive (direct current electrode positive), most of the heat goes into the electrode tip rather than into the base metal. That makes the weld pool less energetic into the workpiece, yielding a very shallow penetration. If you flip to the electrode negative (direct current electrode negative), more heat goes into the workpiece, producing deeper penetration. Alternating current or pulsed DC modify heat input over time, but the polarity that inherently produces the shallowest penetration is the electrode-positive setting.

In GTAW, how deep the weld penetrates depends on where the arc’s heat is concentrated, which is controlled by polarity. When the electrode is positive (direct current electrode positive), most of the heat goes into the electrode tip rather than into the base metal. That makes the weld pool less energetic into the workpiece, yielding a very shallow penetration. If you flip to the electrode negative (direct current electrode negative), more heat goes into the workpiece, producing deeper penetration. Alternating current or pulsed DC modify heat input over time, but the polarity that inherently produces the shallowest penetration is the electrode-positive setting.

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