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500mm UHP Graphite Electrode
The 500mm Ultra High Power (UHP) graphite electrode is a key consumable widely used in electric arc furnace (EAF) steelmaking and high-temperature metallurgy. Its excellent electrical conductivity and thermal shock resistance enable efficient melting and secondary refining, improving production efficiency and steel quality.
Description
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Basic Description
The 500mm Ultra High Power (UHP) Graphite Electrode is a premium consumable widely used in electric arc furnace (EAF) steelmaking and other high-temperature metallurgical applications. Manufactured from high-quality petroleum coke and needle coke through advanced baking, graphitization, and precision machining processes, this electrode offers superior electrical conductivity, exceptional thermal shock resistance, and high mechanical strength, making it essential for modern steel production.
Key Technical Specifications
| Parameter | Unit | Electrode | Nipple |
| Resistivity | μΩ·m | 4.5 ~ 5.6 | 3.4 ~ 3.8 |
| Bending Strength | MPa | ≥ 12.0 | ≥ 22.0 |
| Elastic Modulus | GPa | ≤ 13.0 | ≤ 18.0 |
| Bulk Density | g/cm³ | 1.68 ~ 1.72 | 1.78 ~ 1.84 |
| Thermal Expansion Coefficient | 10⁻⁶/°C | ≤ 1.2 | ≤ 1.0 |
| Ash Content | % | ≤ 0.2 | ≤ 0.2 |
| Allowable Current | A | — | 38000 ~ 55000 |
| Current Density | A/cm² | — | 18 ~ 27 |
| Actual Diameter | mm | Max: 511 Min: 505 | — |
| Actual Length (Customizable) | mm | 1800 – 2400 | — |
| Length Tolerance | mm | ±100 | — |
| Short Ruler Length | mm | -275 | — |
Application Scenarios
● Electric Arc Furnace (EAF) steelmaking: Serves as the primary conductor of electrical current, generating stable arcs to efficiently melt scrap steel with minimal power loss.
● Ladle Furnace (LF) and Argon Oxygen Decarburization (AOD): Used for secondary refining, enhancing steel purity and alloy control.
● Non-Ferrous Metal Smelting: Suitable for melting and refining copper, aluminum, nickel, and other metals requiring high purity and excellent electrical performance.
● Chemical Industry: Utilized in high-temperature reactors for producing silicon, calcium carbide, and other carbon-based chemical products.
Advantages
● Outstanding electrical conductivity reduces power consumption and improves energy efficiency.
● Excellent thermal shock resistance extends electrode lifespan and reduces operational downtime.
● High mechanical strength ensures stability under heavy current loads and mechanical stresses during handling.
● Low impurity content improves molten metal quality by minimizing contamination.
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The 500mm HP graphite electrode is tailored for EAFs over 300 tons. It ensures stable performance under extreme heat and load with high conductivity, strong oxidation resistance, and low thermal expansion—reducing consumption and enhancing steelmaking efficiency.
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