Brief Introduction
Graphite electrodes of general power (EG-RP) are manufactured for operation at currents with a density of not more than 17 A / cm2 and The Graphite electrode RP is used in an electric smelting furnace or an arc furnace of a total power for smelting steel, silicon, yellow phosphorus, etc.
Technical Characteristics
| Name | Unit | diameter of electrode 300mm-600mm | |||
| standard | Actual measurement | ||||
| Electrode | Nipple | Electrode | Nipple | ||
| Specific electrical resistivity | μOhm • m | 7.0-7.5 | 6.5. | 6.5-7.0 | 6th |
| Limit of mechanical resistance to bending | MPa | 9.8-10.5 | 14 | 12-15 | 15-18 |
| Elastic modulus | GPa | 12 | 16 | 12 | 14 |
| Ash content, not more than | % | 0.3 | 0.3 | 0.3 | 0.3 |
| Bulk density, not less than | g / cm3 | 1.6 | 1.7. | 1.68-1.73 | 1.75 |
| Thermal coefficient of linear expansion | × 10-6 / ℃ | 2.4 | 2.2 | 2.2 | 2 |
The Length & Diameter & Permissible Deviation
| Diameter | Length | ||||||
| Nominal diameter | Actual diameter | Nominal length | tolerance | ||||
| Millimeters (mm) | Inch (inch) | Max. (Max.) | Min (min) | mm | Length | the maximum | |
| 300 | 12 | 307 | 302 | 1600 1800 | ± 100 | -100 | -275 |
| 350 | 14 | 357 | 352 | ||||
| 400 | 16 | 409 | 403 | ||||
| 450 | 18 | 460 | 454 | ||||
| 500 | 20 | 511 | 505 | 1600/1800/2000/2200 1800/2000/2200 1800/2000/2200/2400 1800/2000/2200 1800/2000/2200 |
± 100 | -100 | -275 |
Current Capacity
| Nominal diameter | Permissible current power | The current density (A / cm2) | |
| Millimeter (mm) | Inch (inch) | ||
| 300 | 12 | 10000-13000 | 17-24 |
| 350 | 14 | 13500-18000 | 17-24 |
| 400 | 16 | 18000-23500 | 16-24 |
| 450 | 18 | 22000-27000 | 16-24 |
| 500 | 20 | 25000-32000 | 15-24 |
| 600 | 24 | 30000-36000 | 14-24 |