DCEP concentrates heat on the plate and the electrode in which proportions?

DCEP concentrates heat on the plate and the electrode in which proportions?

• A. 2/3 on the plate, 1/3 on the electrode
• B. 1/3 on the plate, 2/3 on the electrode
• C. 50/50 heat distribution
• D. All heat on the plate

Answer: (B)

With direct current polarity, heat distribution between the electrode and the workpiece depends on which side is positive. In DCEP, the electrode is positive, so the arc’s heat concentrates more in the electrode than in the plate. The common practical split is about two-thirds of the heat to the electrode and about one-third to the plate. This happens because the positive electrode experiences more resistive heating and ion bombardment, while the workpiece (the negative side) receives less heat. So the correct choice reflects roughly 1/3 on the plate and 2/3 on the electrode.

With direct current polarity, heat distribution between the electrode and the workpiece depends on which side is positive. In DCEP, the electrode is positive, so the arc’s heat concentrates more in the electrode than in the plate. The common practical split is about two-thirds of the heat to the electrode and about one-third to the plate. This happens because the positive electrode experiences more resistive heating and ion bombardment, while the workpiece (the negative side) receives less heat. So the correct choice reflects roughly 1/3 on the plate and 2/3 on the electrode.