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What are the differences in carbon rod burn-out and groove forming quality when using DC positive polarity and DC reverse polarity?
In carbon arc gouging, the choice of DC positive or DC reverse polarity directly determines the carbon rod burn-off rate, arc energy distribution, and groove forming quality.
The core difference between the two stems from the difference in heat distribution between the arc anode and cathode (the anode region accounts for about 2/3 of the total heat,
and the cathode region accounts for about 1/3).
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