Графитовый электрод UHP

графитовый электрод

Графитовый электрод UHP

UHP graphite electrodes are used for electric arc furnace and high-load ladle furnaces. This electrode is characterized by a low electrical resistivity and a high permissible current load. In the electric arc furnace steelmaking process, the current density allowed to pass is greater than 25A/cm2. The production of it uses needle coke as raw material, and multiple impregnation and roasting are used in the production process. With the rapid development of electric furnace steelmaking, high-power and ultra-high-power electric arc furnaces are becoming more popular. We manufacturer and supply graphite electrodes with diameters ranging from 250-600 mm with nipples.

Приложения:

UHP graphite electrode is mainly used for smelting scrap steel in eaf steelmaking production. As a high-temperature resistant conductor, it can easily melt various high-melting-point alloys in the arc temperature zone (up to 3000-6000 °C ) in the electric arc furnace connected to a three-phase transformer.

UHP graphite electrodes can also be used in ladle refining furnaces, continuous casting and other processes. 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 electric arc furnace steelmaking. This will help steel mills achieve high production, high quality and low consumption.

 

Graphite electrodes for AC electric arc furnace    What is graphite electrode used for    HP graphite electrode for DC arc furnace

( In AC electric furnace)                                        (In DC electric furnace)                                                    (In Ladle refining furnace)

 

Основные характеристики

Устойчивость к высоким температурам: 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.

Низкое удельное сопротивление: The specific resistance of the electrode body is below 5.0g∕㎝3и сосок ниже 4,0 г∕㎝.3. At this time, the resistance to current is small, reducing power loss.

Высокая плотность: The overall structure has smaller porosity, reducing electrode consumption.

Хорошая электропроводность: 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.

Высокая механическая прочность: В процессе замешивания частицы кокса равномерно перемешиваются и прочно связываются. Поэтому прочность на изгиб и сжатие очень высока.

Малый коэффициент теплового расширения: Поскольку в процессе производства добавляется игольчатый кокс, заготовка легче графитизируется при высоких температурах выше 2000℃. Чем лучше степень графитизации, тем меньше коэффициент теплового расширения.

Advantages:

The resistivity of UHP graphite electrode is the lowest among all electrode types. This means that it can pass higher density current without breaking or deforming during arc furnace smelting.

Jinsun uses игольчатый кокс in production to enhance the thermal shock resistance of the электрод itself. This makes it have a lower thermal expansion coefficient and can better resist rapid changes in temperature without being damaged.

The density of the double-impregnated UHP graphite electrode has been greatly improved. So, even at high temperatures, it oxidizes slowly, reducing the number of replacements.

Its diameter can be more than 750mm, which can meet the smelting needs of 100MT ultra-high power arc furnaces.

 

UHP Graphite Electrode Price.

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.

Your professional UHP graphite electrode manufacturer

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.

 

Физические и химические свойства электрода и ниппеля

Графитовый электрод UHP Единица Диаметр
12"-16" 18"-22" 24"-26" 28"-32"
Специфическое сопротивление Электрод μΩ-m

6.0 6.5 6.5 5.5
Ниппель 5.0 5.5 5.5 4.5
Поперечная прочность Электрод ΜРa

11.0 10.5 10.5 11.0
Ниппель 16.0 15.0 15.0 16.0
Модуль упругости Электрод GРa

14.0 14.0 14.0 14.0
Ниппель 18.0 18.0 18.0 18.0
Насыпная плотность Электрод g∕㎝3

1.65 1.65 1.66 1.68
Ниппель 1.76 1.76 1.74 1.75
C.T.E.

(100~600℃)

Электрод 10-6∕℃

1.5 1.5 1.4 1.4
Ниппель 1.4 1.4 1.3 1.3
Содержание золы % 0.2 0.2 0.2 0.2

 

Допустимая токопроводящая способность

Номинальный Графитовые электроды UHP
мм дюйм Токопроводящая

Мощность(A)

Текущая плотность

(A/см2

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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