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Technical Properties of Ultra High Power Graphite Electrodes and nipple
| Technical Properties of Ultra High Power Graphite Electrodes and nipple | ||||||||
| Item | Classification | Unit | NominalDiameter (mm) | |||||
| 300-400 | 450-500 | 550-700 | ||||||
| Electric Resistivuty(<=) | Elatrode | μΩ.m | 6.2 | 6.2 | 6.3 | |||
| Nipple | 5.0 | 5.0 | 4.5 | |||||
| Bending strength(>=) | Elatrode | Mpa | 10.5 | 10.5 | 11.0 | |||
| Nipple | 18.0 | 18.0 | 20.0 | |||||
| Elastic moduluc(<=) | Elatrode | Gpa | 14.0 | 14.0 | 14.0 | |||
| Nipple | 18.0 | 18.0 | 22.0 | |||||
| Bulk density(>=) | Elatrode | g/cm3 | 1.66 | 1.66 | 1.66 | |||
| Nipple | 1.75 | 1.75 | 1.75 | |||||
| CTE(<=) | Elatrode | X10-6/ºC | 1.5 | 1.5 | 1.4 | |||
| Nipple | 1.4 | 1.4 | 1.2 | |||||
| Ash(<=) | % | 0.3 | 0.3 | 0.5 | ||||
| Note: Ash content and thermal expansion coefficient are parameter indicators | ||||||||
Precautions for using graphite electrodes
1. When selecting the electrode diameter during steelmaking, please refer to the electrode current capacity.
2. Graphite electrodes should be protected from rain and snow during transportation and storage, and must be dried before use.
3. Graphite electrodes should be handled with care during loading, unloading and transportation to protect the threads and prevent damage.
4. Before connecting the electrode, the electrode socket threads must be blown clean with compressed air, and then the joint and electrode are tightened.
5. The electrode lifting device of the electrode must not shake during operation to prevent the joint from loosening and disengaging.
6. The electrode holder must not clamp the electrode near the joint socket.
7. When loading the furnace, a large steel block should be placed underneath to prevent the material from collapsing and breaking the electrode during melting.
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