Wholesale graphite electrode 200mm 300mm 400mm RP Hp UHP graphite electrode for steel making
|
Nominal Diameter(mm) |
Resistivity |
Density |
Flexure Strength |
Elastic Modulus |
Ash Content |
CTE |
Current Load |
Current Density |
|
300 |
6 |
1.67-1.73 |
12 |
10.5 |
0.3 |
2 |
13000-17400 |
17-24 |
|
350 |
6 |
1.67-1.73 |
12 |
10.5 |
0.3 |
2 |
17400-24000 |
17-24 |
|
400 |
6 |
1.67-1.73 |
12 |
10.5 |
0.3 |
2 |
21000-31000 |
16-24 |
|
450 |
6 |
1.67-1.73 |
12 |
10.5 |
0.3 |
2 |
25000-40000 |
15-24 |
|
500 |
6 |
1.67-1.73 |
12 |
10.5 |
0.3 |
2 |
30000-48000 |
15-24 |
|
550 |
6 |
1.67-1.73 |
12 |
10.5 |
0.3 |
2 |
34000-53000 |
14-22 |
|
600 |
6 |
1.67-1.73 |
12 |
10.5 |
0.3 |
2 |
38000-58000 |
13-21 |
|
650 |
6.2 |
1.67-1.73 |
12 |
10.5 |
0.3 |
2 |
41000-65000 |
12-20 |
|
700 |
6.2 |
1.67-1.73 |
12 |
10.5 |
0.3 |
2 |
45000-72000 |
12-19 |
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Purified graphite electrodes are engineered to minimize impurities, making them ideal for applications requiring ultra-high conductivity and chemical inertness. Raw graphite materials, typically derived from petroleum coke or coal tar pitch, contain inherent impurities like sulfur, silicon, and iron oxides. Through advanced purification processes-including halogen treatment, alkali melting, and high-temperature vacuum distillation-these contaminants are reduced to levels below 0.1%, achieving purity exceeding 99.9%.
The benefits of purification are profound. In electric arc furnaces, impurities act as "getters," reacting with molten steel and degrading product quality. Purified electrodes eliminate this risk, ensuring cleaner steel with fewer defects. Additionally, low impurity levels reduce electrode consumption: impurities accelerate oxidation at high temperatures, shortening electrode life. For example, a purified electrode may last 15–20% longer than a standard one in EAF operations, reducing material costs.
Purification also enhances corrosion resistance. In non-ferrous metal smelting (e.g., aluminum or copper), acidic or alkaline slags can erode impure electrodes. High-purity graphite resists chemical attack, maintaining structural integrity. As industries demand greener, more efficient processes, purified graphite electrodes align with sustainability goals by minimizing waste and energy use. Their role in precision manufacturing-from aerospace alloys to advanced electronics-underscores their value as a premium material.
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