High Power (HP) Graphite Electrodes are precision-engineered carbon electrodes designed for use in electric arc furnaces (EAFs) and ladle furnaces (LFs) operating under medium-to-high electrical loads. Produced using high-grade petroleum coke and coal tar pitch, HP electrodes undergo multiple cycles of baking and graphitization at up to 2800°C, resulting in enhanced thermal conductivity, mechanical strength, and oxidation resistance compared to regular power electrodes.
They are ideal for steel mills and foundries seeking reliable performance with optimized cost-efficiency in electric furnace applications.
Key Features:
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Moderate to High Electrical Conductivity: Delivers efficient arc performance with stable current flow
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Good Thermal Shock Resistance: Capable of withstanding high-temperature fluctuations in the furnace
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Improved Mechanical Strength: Reduced risk of electrode breakage or deformation
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Low Ash and Impurity Content: Ensures minimal contamination of molten steel
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Cost-Effective Alternative: Suitable for operations not requiring the extreme performance of UHP electrodes
Typical Applications:
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Electric Arc Furnaces (EAFs): For carbon steel and alloy steel production
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Ladle Furnaces (LFs): For refining, alloying, and desulfurization processes
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Submerged Arc Furnaces: For non-ferrous alloy production and mineral smelting
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Foundry Operations: Ideal for small to medium furnace capacities
Technical Specifications (Typical):
| Property | HP Grade Value |
|---|---|
| Bulk Density | ≥ 1.65 g/cm³ |
| Electrical Resistivity | ≤ 6.0 µΩ·m |
| Flexural Strength | ≥ 10.0 MPa |
| Elastic Modulus | ≤ 12 GPa |
| Thermal Conductivity | ≥ 120 W/m·K |
| Ash Content | ≤ 0.3% |
| Apparent Porosity | ≤ 23% |
| Current Carrying Capacity | 15,000 – 35,000 A (varies by size) |
Available Sizes:
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Diameter: 200 mm (8″) to 600 mm (24″)
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Length: 1600 mm to 2400 mm
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Nipple Types: 3TPI or 4TPI threading; custom threads available
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Packaging: Wooden crates with anti-collision foam and moisture protection
HP vs UHP Electrodes:
| Feature | HP Electrode | UHP Electrode |
|---|---|---|
| Raw Material | Petroleum coke | Needle coke |
| Resistivity | ≤ 6.0 µΩ·m | ≤ 5.5 µΩ·m |
| Max Current Capacity | Up to 35,000 A | Up to 45,000 A |
| Cost | More economical | Higher investment |
Conclusion:
High Power graphite electrodes strike a balance between performance and cost, making them ideal for medium-duty electric furnace operations in steelmaking and metallurgical industries. With solid conductivity, strength, and stability, HP electrodes are a reliable choice for consistent and efficient production.
