Graphite Electrode URP Definition
Ultra high power graphite electrodes (EHSP-UHP) are manufactured for operation at currents with a density of more than 25A / cm2
Graphite Electrode URP Application
1.URP graphite electrode used in steel making electric arc furnaces, refining furnaces, as conductive electrodes.
2.Graphite electrode URP used in industrial silicon furnaces, yellow phosphorus furnaces, corundum furnaces. As conductive electrodes for graphite electrode URP.
Graphite Electrode UHP Specification
| Name |
Unit |
diameter of electrode 300mm-600mm |
| standard |
Actual measurement |
| Electrode |
Nipple |
Electrode |
Nipple |
| Specific electrical resistivity |
μOhm • m |
6.2-6.5 |
5.5 |
5.0-6.5 |
4.5 |
| Limit of mechanical resistance to bending |
MPa |
10.5 |
16 |
14-16 |
18-20 |
| Elastic modulus |
GPa |
14 |
18 |
12 |
14 |
| Ash content, not more than |
% |
0.5 |
0.5 |
0.5 |
0.5 |
| Bulk density, not less than |
g / cm3 |
1.64-1.65 |
1.70-1.72 |
1.72-1.75 |
1.78 |
| Thermal coefficient of linear expansion (100-600 ° C) |
× 10-6 / ℃ |
1.5 |
1.4 |
1.3 |
1.2 |
The Length & Diameter & Permissible Deviation of the Graphite Electrode UHP
| 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 |
± 100 |
-100 |
-275 |
| 550 |
22 |
556 |
553 |
| 600 |
24 |
613 |
607 |
Graphite Electrode UHP Current Capacity
| Nominal diameter |
Current throughput (A) |
The current density (A / cm2) |
| Millimeters (mm) |
Inch (inch) |
| 250 |
10 |
9200-15100 |
21-30 |
| 300 |
12 |
13000-22000 |
20-30 |
| 350 |
14 |
20000-30000 |
20-30 |
| 400 |
16 |
25000-40000 |
19-30 |
| 450 |
18 |
32000-45000 |
19-27 |
| 500 |
20 |
38000-55000 |
18-27 |
| 550 |
|
48000-60000 |
18-24 |
| 600 |
24 |
52000-72000 |
18-24 |
| 700 |
27th |
62000-95000 |
18-24 |
Graphite Electrode URP Manufacturer in RS Refractory Factory Advantages
1.High quality graphite electrodes products.
2.Graphite electrode URP manufacturer from China
3.Profitable price for high quality graphite electrodes.
4.RS refractory factory can produce various specifications in accordance with customer requirements.
Graphite Electrode URP Using Precautions
1.In actual use the graphite electrode URP, specifications and grades of the graphite electrode should be selected according to the specific furnace conditions.
2.Primary factor is the maximum current intensity, but also consider the influence of other factors, such as the characteristics of the Arc electric furnace itself, the type of charge, the smelting time, the oxygen blowing amount, the mechanical requirements, the steel making process.
3. Normally, specification of most grades of graphite electrodes have been standardized. But in the process of use, sometimes also consider the temperature to some impacts of these indicators.
4. Select the grade and diameter of the electrode according to the furnace capacity and transformer load.
5. When charging the electric furnace, refractory material should be installed at the bottom of furnace to prevent furnace refractory material from collapsing and breaking the electrode. In the smelting process, lime, it should be avoided.
6. A large amount of objects are concentrated directly under the electrodes, otherwise it will affect the energization of the electrodes and may even cause the electrodes to break.
7. Pay attention to the position of the furnace cover. If the furnace cover is misaligned, the furnace cover will be scratched when the electrode is lifted, resulting in damage to the electrode.
8. If the connector plug is found to be missing when connecting the electrode, replace it and connect it.
9. After the electrodes are connected, if there is a gap on the connection surface, be sure to find out the cause. It can be used after the gap is eliminated.
10. Graphite electrode holder should be sandwiched between the upper and lower guard lines of the topmost electrode. It is forbidden to be caught in the warning line (the joint hole) and the middle electrode, otherwise the electrode column may be broken.
11.Since raw refractory materials and production processes of different manufacturers may be different, the physical and chemical properties of the electrodes are also different. It is recommended that the joints and electrodes produced by different manufacturers should not be used interchangeably during use.
