Product Overview
The 750mm diameter graphite electrode is a large-scale, high-strength industrial-grade graphite material designed for large electric arc furnaces (EAF) and ladle furnaces (LF). It efficiently conducts electric current under extreme thermal and electrical loads, making it ideal for high-temperature metallurgical processes.
Key Features
1,High Electrical Conductivity
Low resistivity (typically ≤5.5 μΩ·m), ensuring efficient power transmission and reduced energy loss.
2,Exceptional Thermal Resistance
Withstands temperatures up to 3000°C; optional anti-oxidation coating (e.g., aluminum coating) available for extended service life.
3,Superior Mechanical Strength
Flexural strength ≥10 MPa, compressive strength ≥20 MPa, minimizing breakage risks.
4,Low Thermal Expansion
Coefficient of thermal expansion (CTE) ≤1.5×10⁻⁶/°C (RT to 600°C), ensuring stability under rapid heating.
5,Precision Machining
Threaded connections (NPT or ISO standard) ensure tight furnace integration, reducing arc loss.
Typical Applications
Steelmaking: Large EAF scrap melting, steel refining.
Non-Ferrous Metals: Silicon, phosphorus, titanium alloy production.
Industrial Silicon/Carbide: Conductivity material in submerged arc furnaces.
Other Uses: Graphitization furnaces, monocrystalline silicon growth furnaces.
Technical Specifications
|
Parameter |
Value |
|
Diameter |
750mm (±2mm tolerance) |
|
Length |
Standard 1800-2700mm (customizable) |
|
Bulk Density |
≥1.68 g/cm³ |
|
Resistivity |
≤5.5 μΩ·m |
|
Ash Content |
≤0.5% |
|
Current Capacity |
≥80 kA (operation-dependent) |
Advantages
Large-Scale Design: Optimized for UHP furnaces (100+ tons), improving melting efficiency.
Low Consumption: Anti-oxidation treatment reduces electrode wear (consumption ≤1.2 kg/ton steel).
Customization: Special threading, tapered ends, and other modifications available.
Packaging & Shipping
Wooden crates or steel frames with moisture-proof protection.
Shockproof handling required; store in dry, ventilated areas.
Usage Notes
Preheat to 200-300°C before use to prevent thermal shock cracks.
Regularly inspect joints to avoid loose connections and uneven arcing.
For detailed technical data or application support, please contact our engineering team.
This specification can be adjusted based on production grades (e.g., UHP, RP). Let us know your requirements for further customization.
Products Parameters
|
Item |
Unit |
RP |
HP |
UHP |
||||
|
≤∅400 |
≥∅450 |
≤∅400 |
≥∅450 |
≤∅400 |
≥∅450 |
|||
|
Electric Resistivity |
Electrode |
μΩ*m |
≤8.5 |
≤9.0 |
≤6.0 |
≤6.5 |
≤5.0 |
≤5.5 |
|
Nipple |
≤6.5 |
≤6.5 |
≤5.5 |
≤5.5 |
≤4.5 |
≤4.5 |
||
|
Transverse Strength |
Electrode |
MPa |
≥8.0 |
≥7.0 |
≥10.5 |
≥10.5 |
≥15.0 |
≥15.0 |
|
Nipple |
≥16.0 |
≥16.0 |
≥20.0 |
≥20.0 |
≥22.0 |
≥22.0 |
||
|
Young's Modulus |
Electrode |
Gpa |
≤9.3 |
≤12.0 |
≤14.0 |
|||
|
Nipple |
≤14.0 |
≤16.0 |
≤18.0 |
|||||
|
Bulk Density |
Electrode |
g/cm3 |
≥1.54 |
≥1.65 |
≥1.68 |
|||
|
Nipple |
≥1.69 |
≥1.73 |
≥1.76 |
|||||
|
Coefficient of Termal Expansion (100℃﹣600℃) |
Electrode |
100-6/℃ |
≤2.5 |
≤2.0 |
≤1.5 |
|||
|
Nipple |
≤2.0 |
≤1.6 |
≤1.2 |
|||||
|
Ash |
% |
≤0.3 |
≤0.2 |
≤0.2 |
||||