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UHP graphite electrode is mainly used for smelting scrap steel in eaf steelmaking production. This is a process in which it is used as a high temperature resistant conductor, and three-phase alternating current is used as a power source. Elektrik arkları are generated between electrodes and metal materials, and then the high temperature of the arcs is used to heat and melt the furnace materials.
They are mainly used in DC electric arc furnaces, AC electric arc furnaces and ladle refining furnaces. The purpose of refining is to improve the quality of steel, this process uses the arc generated between the electrode and the molten steel to heat the EAF steelmaking.
( In AC electric furnace) (In DC electric furnace) (In Ladle refining furnace)
Yüksek sıcaklık dayanımı: It can withstand high temperatures during the electric arc furnace (EAF) steelmaking process. Even in harsh high temperatures up to 3600 degrees Celsius, it will not melt or deform or be damaged under the action of strong arcs.
Düşük özgül direnç: The specific resistance of the electrode body is below 5.0g∕㎝3ve meme başı 4,0 g∕㎝'ın altındadır.3. At this time, the resistance to current is small, reducing power loss.
Yüksek yoğunluk: The overall structure has smaller porosity, reducing electrode consumption.
İyi elektrik iletkenliği: They have low ash content, are heat-resistant and corrosion-resistant. Therefore they are excellent conductive materials used in electric arc furnaces at high temperatures.
Yüksek mekanik dayanım: Yoğurma işlemi sırasında kok partikülleri eşit şekilde karıştırılır ve sıkıca bağlanır. Bu nedenle eğilme ve basınç dayanımı yüksektir.
Küçük termal genleşme katsayısı: Üretim sürecinde iğne kok ilave edildiğinden, işlenmemiş ürün 2000°C'nin üzerindeki yüksek sıcaklıklarda daha kolay grafitleşir. Grafitleşme derecesi ne kadar iyi olursa, termal genleşme katsayısı o kadar küçük olur.
UHP graphite electrode is made of high-grade needle coke and treated with Lengthwise Graphitization (LWG). The graphitization temperature can be up to 2800 °C – 3000 °C. You can find that this thpe of electrodes have lower electrical resistance & linear expansion, good thermal shock resistance and allow a larger current density.
Needle coke is a key raw material in the production process of ultra-high power graphite elektrotlar. The needle coke content of our UHP grade is 100%, and it determines the price of graphite electrode.
It is important to note that the price of it may vary due to market conditions, supply and demand dynamics, and other external factors. In addition, the rising cost of raw materials such as needle coke has also driven the price.
As a graphite electrode producer in China, Jinsun has a complete production line, including raw material mixing, roasting, impregnation, graphitization, processing, etc. Our factory manufacture and supply high quality UHP grade graphite electrodes for your EAF steelmaking production.
| UHP Grafit Elektrot | Birim | Çap | ||||
| 12"-16" | 18"-22" | 24"-26" | 28"-32" | |||
| Spesifik direnç | Elektrot | μΩ-m
≤ |
6.0 | 6.5 | 6.5 | 5.5 |
| Meme ucu | 5.0 | 5.5 | 5.5 | 4.5 | ||
| Enine mukavemet | Elektrot | ΜРa
≥ |
11.0 | 10.5 | 10.5 | 11.0 |
| Meme ucu | 16.0 | 15.0 | 15.0 | 16.0 | ||
| Elastik modül | Elektrot | GРa
≤ |
14.0 | 14.0 | 14.0 | 14.0 |
| Meme ucu | 18.0 | 18.0 | 18.0 | 18.0 | ||
| Yığın Yoğunluğu | Elektrot | g∕㎝3
≥ |
1.65 | 1.65 | 1.66 | 1.68 |
| Meme ucu | 1.76 | 1.76 | 1.74 | 1.75 | ||
| C.T.E
（100～600℃） |
Elektrot | 10-6∕℃
≤ |
1.5 | 1.5 | 1.4 | 1.4 |
| Meme ucu | 1.4 | 1.4 | 1.3 | 1.3 | ||
| Kül içeriği | % ≤ | 0.2 | 0.2 | 0.2 | 0.2 | |
| Nominal | UHP Grafit Elektrotlar | ||
| mm | inç | Akım Taşıyıcı
Kapasite（A） |
Mevcut Yoğunluk
（A/cm2） |
| 300 | 12 | 15000~22220 | 20~32 |
| 350 | 14 | 20000~30300 | 20~32 |
| 400 | 16 | 25000~40400 | 19~32 |
| 450 | 18 | 32000~45450 | 19~29 |
| 500 | 20 | 38000~55550 | 18~29 |
| 550 | 22 | 42000~64640 | 17~28 |
| 600 | 24 | 50000~76760 | 17~27 |
| 700 | 28 | 70000~91000 | 18~24 |
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