Graphite electrode rp uses domestic petroleum coke and asphalt as raw materials, in accordance with the regular power graphite electrode production processes, calcination, dosing, kneading, forming, baking, graphite and machining refined. The nipple uses one time of impregnation and two time of baking processes.
Name | Unit | diameter of electrode 300mm-600mm | |||
standard | Actual measurement | ||||
Electrode | Nipple | Electrode | Nipple | ||
Specific electrical resistivity | μOhm • m | 9.0-10.5 | 8.5 | 8.0-9.0 | 7.5 |
Limit of mechanical resistance to bending | MPa | 6.4-7.8 | 13 | 9.0-10 | 15 |
Elastic modulus | GPa | 9.3 | 14 | 9 | 13.7 |
Ash content, not more than | % | 0.5 | 0.3 | 0.5 | 0.3 |
Bulk density, not less than | g / cm3 | 1.52 | 1.68 | 1.56-1.62 | 1.7. |
Thermal coefficient of linear expansion | × 10-6 / ℃ | 2.9 | 2.8. | 2.4 | 2.2 |
A type | Diameter | Length | ||
Nominal diameter | Nominal length | tolerance | ||
Millimeter (mm) | Inch (inch) | |||
Small type | 75 | 2.95 | 1200/1400 | ± 100 |
86 | 3.38 | ± 100 | ||
100 | 3.93 | ± 100 | ||
130 | 5.11 | ± 100 | ||
150 | 5.9 | 1600/1800 | ± 100 | |
200 | 7.87 | ± 100 | ||
225 | 8.85 | ± 100 | ||
250 | 9.84 | ± 100 | ||
Common Type | 300 | 12 | 1600/1800/2000/2200 | ± 100 |
350 | 14 | ± 100 | ||
400 | 16 | ± 100 | ||
450 | 18 | ± 100 | ||
500 | 20 | ± 100 | ||
550 | 22 | ± 100 | ||
600 | 24 | ± 100 | ||
Large type | 780 | 30.7 | 2000 | ± 100 |
800 | 31.49 | ± 100 | ||
850 | 33.46 | ± 100 | ||
960 | 37.79 | ± 100 | ||
1200 | 47.24 | ± 100 |
Nominal diameter | Permissible current power | The current density (A / cm2) | |
Millimeter (mm) | Inch (inch) | ||
300 | 12 | 10000-13000 | 14-18 |
350 | 14 | 13500-18000 | 14-18 |
400 | 16 | 18000-23500 | 14-18 |
450 | 18 | 22000-27000 | 13-17 |
500 | 20 | 25000-32000 | 13-16 |
600 | 24 | 30000-36000 | 12-15 |
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. and RP Graphite electrode can be widely used in the electric smelting furnace for producing the ferroalloy, pure silicon, yellow phosphorus, copper matte, calcium carbide and so on.
RS refractory factory as a professional graphite electrode rp manufacturer in china, have many competitive advantages in the market. if you have demand of rp graphite electrodes, or have some questions on rp graphite electrode about physical and chemical indicators, please contact us for free, we will provide you with high quality rp graphite electrodes.