Electric Arc Furnace Graphite Electrodes 200mm 300mm 400mm 600mm RP Hp UHP

Electric Arc Furnace Graphite Electrodes 200mm 300mm 400mm 600mm RP Hp UHP

How do graphite electrodes (200mm/300mm/400mm/600mm) for electric arc furnaces (EAFs) correspond to power levels (RP/HP/UHP)? What furnace capacities are suitable for different combinations?

The size (diameter) and power level should be matched based on the furnace capacity and smelting intensity (e.g., scrap melting rate and power consumption target):
• 200mm electrodes: Mostly suitable for small EAFs (≤20 tons), commonly used with RP (regular power) or HP (high power) grades, and suitable for low-intensity, small-batch smelting (e.g., trial production of special steel or alloy steel).

• 300mm electrodes: Suitable for medium-sized EAFs (20-50 tons), primarily with HP grades, balancing efficiency and cost, and suitable for conventional scrap smelting.

• 400mm electrodes: Used in medium-to-large EAFs (50-100 tons), primarily with HP grades. Some high-efficiency furnaces can also have UHP grades, supporting higher current densities (e.g., 5-7 A/cm²).

• 600mm electrodes: Only used in ultra-large electric furnaces (≥100 tons) and must be paired with UHP grades (current density ≥7A/cm²) to meet the ultra-high power requirements of rapid melting and low-carbon steel production.