Graphite Electrode

Graphite electrodes are used for electric arc furnaces, ladle furnaces and submerged arc furnaces. After being energized in the EAF steelmaking, As a good conductor, it is used to generate an arc, and the heat of the arc is used to melt and refine steel, non-ferrous metals and their alloys. It is a current good conductor in the electric arc furnace, does not melt and deform at high temperatures, and maintains a specific mechanical strength. There are three types: RP 、HP, and UHP graphite electrode.

What is a graphite electrode?

The graphite electrode serves a current supply material into the electric arc furnace space for heating an subsequent melting of the charge at high temperatures to 1700 ℃. In the cost of eaf steelmaking, the consumption of graphite electrodes accounts for about 10%.

It is made of petroleum coke and pitch coke, and high-power and ultra-high-power grades are made of needle coke. They have low ash content, good electrical conductivity, heat, and corrosion resistance, and will not melt or deform at high temperatures.

About graphite electrode grades and diameters.

JINSUN has different grades and diameters. You can choose from RP, HP or UHP grades, which can help you improve electric arc furnace performance, increase production efficiency, and increase economic benefits. We have various diameters, 150mm-700mm, which can be used for smelting operations of electric arc furnaces of different tonnages.

Correct choice of electrode type and size is very important. This will play a key role in ensuring the quality of the smelted metal and the normal operation of the electric arc furnace.

How does it work in eaf steelmaking？

Graphite electrode introduce electric current into the steelmaking furnace, which is the electric arc furnace steelmaking process. The strong current is transmitted from the furnace transformer through the cable to the holder at the end of the three electrode arms and flows into it.

Therefore, between the electrode end and the charge an arc discharge occurs, and the charge begins to melt using the heat generated by the arc and the charge begins to melt. According to the capacity of the electric furnace, the manufacturer will choose different diameters for use.

To continuously use the electrodes during the smelting process, we connect the electrodes through threaded nipples. Since the cross-section of the nipple is smaller than that of the electrode, the nipple must have higher compressive strength and lower resistivity than the electrode.

In addition, there are various sizes and grades, depending on their use and the specific requirements of the eaf steelmaking process.

Features

Graphite electrode is a key good conductor raw material in the EAF steelmaking process. As source of electric energy for an electric arc furnace, which is the most efficient way to heat and melt steel scrap. They conduct electricity from the power source to the furnace, allowing it to reach high temperatures necessary for steel production.

High bulk density
low specific resistance
Allow large current load
Small thermal expansion coefficient
High bending strength
Low ash content
Graphite machining performance is strong

Main factors affecting the Graphite Electrode Price.

Raw material cost: The price of petroleum coke and needle coke directly affects the production cost of it, and also affects the price.

Price of energy: The production processes of roasting and graphitization require large amounts of electricity, so fluctuations in energy prices may have an impact on the final price.

Development of electric arc furnace technology: The emergence of large-tonnage ultra-high-power electric arc furnaces places higher requirements on their performance. Therefore, the cost of production process and technology also increases accordingly.

Market demand and supply: When the number of electric arc furnaces increases, the demand will inevitably increase, and prices are likely to rise.

Shipping Costs: Price fluctuations in ocean or ground freight, which may play a role in the final price.

International economic situation: Changes in trade relations and policies and exchange rate fluctuations may have an impact on the import and export of raw materials, thereby affecting the price.

Your professional graphite electrode supplier in China.

JINSUN is a professional graphite electrode manufacturer and supplier in China. We supply high-quality UHP/HP/RP graphite electrodes, which are used in EAF steelmaking, casting industry and metallurgical industry. We use advanced manufacturing processes to produce high quality products. In addition to this, JINSUN also offers in different grades. It is also available in custom lengths, diameters and designs.