EAF Ultra High Power Graphite Electrodes 550mm-700mm
EAF Ultra High Power Graphite Electrodes 550mm-700mm
Graphite Electrode Manufacturing Process
1.Raw Material
Use of high-quality calcined petroleum coke production materials
2.Crushing & Screening
They are broken needle coke in mechanical equipment and screening according to the formula after the proportion of the ingredients.
3.Kneading
Ingredients of the raw materials with a certain proportion of asphalt heated kneading, made with plastic paste.
4.Extruding
After kneading of the paste by temperature cooled to process, and forming into the compressor according to the requirements of product specifications.
700UHP Properties
| Nipple | |||||
| Nipple | AD | SPR | MOR | MOE | CTE//cmcmC |
| (gm/cc) | (ohm Micro mtr) | (Nmm2) | ( kg/mm2) | x10-7(0-50℃) | |
| g/cm3 | µΩ.m | MPa | GPa | 10-6/℃ | |
| (100-600℃) | |||||
| MAX | 1.86 | 3.6 | 27 | 16 | 1.1 |
| MIN | 1.8 | 3.2 | 23 | 17.5 | 0.98 |
| Pole | |||||
| Electrode | AD | SPR | MOR | MOE | CTE//cmcmC |
| (gm/cc) | (ohm Micro mtr) | (Nmm2) | ( kg/mm2) | x10-7(0-50℃) | |
| g/cm3 | µΩ.m | MPa | GPa | 10-6/℃ | |
| (100-600℃) | |||||
| MAX | 1.74 | 5 | 12 | 10.5 | 1.25 |
| MIN | 1.70 | 4.2 | 9.5 | 9 | 1.15 |
General Properties:
| Item | Unit | UHP | HP | RP | UHP Nipple | HP Nipple | |||
| 450-500mm | 550-700mm | 450-500mm | 550-700mm | 400-450mm | 500-700mm | ||||
| Bulk Density | g/cm3 | 1.66-1.73 | 1.68-1.75 | 1.60-1.70 | 1.62-1.72 | 1.55-1.65 | 1.54-1.64 | 1.80-1.85 | 1.72-1.80 |
| Resistivity | μΩm | 4.8-6.0 | 4.2-5.0 | 5.2-7.5 | 5.5-7.2 | 7.5-9.0 | 8.0-9.5 | 3.0-4.3 | 4.0-6.0 |
| Flexual Strength | MPa | 10.5-15.0 | 10.0-14.0 | 10.5-14.5 | 9.0-13.5 | 8.0-11.0 | 7.0-10.0 | 20.0-30.0 | 18.0-25.0 |
| Elastic Modulus | GPa | 8.0-10.0 | 8.0-12.0 | 6.0-9.3 | 16.0-20.0 | 12.0-16.0 | |||
| CTE (30-600) | 10-6/℃ | ≤1.5 | ≤2.2 | ≤2.8 | ≤1.3 | ≤2.0 | |||
| Ash Content | % | ≤0.3 | ≤0.3 | ≤0.5 | ≤0.3 | ≤0.3 | |||
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