Welder Red Seal · Question
In DCEN GTAW, what is the typical effect of using a 'pointed' versus a 'blunted' tungsten tip on the weld profile?
A sharply pointed tungsten tip concentrates the arc, producing a narrow, deeply penetrating weld bead. Blunting the tip slightly distributes the arc energy over
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Question: In DCEN GTAW, what is the typical effect of using a 'pointed' versus a 'blunted' tungsten tip on the weld profile?
Answer options:
- A pointed tip produces a wider, shallower bead ✅ A blunted tip produces a wider, shallower bead
- A pointed tip has no effect on the bead profile
- A blunted tip is only used for AC welding
Correct answer: A blunted tip produces a wider, shallower bead
Explanation: A sharply pointed tungsten tip concentrates the arc, producing a narrow, deeply penetrating weld bead. Blunting the tip slightly distributes the arc energy over a wider area, resulting in a wider, shallower weld bead and can handle higher amperages without degradation.
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