Graphite Electrode Manufacturer
Rongsheng Group
Graphite Electrodes used in EAF furnance for smelting steel.
The electric arc furnace uses electric energy as a heat source and graphite electrodes as an electric conductor, which can adjust the atmosphere in the furnace, and is extremely advantageous for melting a steel material containing many oxidizable elements.
Graphite Electrodes used in EAF furnance for smelting steel.
Electric arc furnace steelmaking is a steelmaking method in which electric energy is input into an electric arc steelmaking furnace through a graphite electrode, and an electric arc generated between an electrode end portion and the loading is used as a heat source.
The nipples of the graphite electrodes play a key role in the connectivity of the electrode during steelmaking. The quality of the nipple directly affects the use of graphite electrodes in electric steelmaking.
No matter how the electrode quality is, if there is no good nipple with it, there will be problems in steel making.
According to relevant information, in electric steelmaking, more than 80% of electrode accidents are caused by nipple breakage and loosening tripping. Therefore, the selection of Rongsheng high-quality electrode nipple is a powerful guarantee for electric arc furnace steelmaking.
The parameters of graphite electrode nipples (4TPI, 3TPI).
(1) When the new electrode connects the nipple. It is necessary to blow out dust or dirt in the socket with compressed air.
(2) When connecting, the electrode is aligned with the center axis of the nipple to which is the connection.
(3) The electrode clampers should be the exterior of two security lines of the nipple connection position.
(4) Before screwing the electrode, the dust on the surface of the electrode should be blown out of compressed air.
The ultra-high power graphite electrode is abbreviated as the UHP graphite electrode.
Large bulk density, low internal defects, low resistivity;
High bending strength, not easy to be broken;
The graphitization temperature is high and the resistivity is low.
1. Rongsheng Group‘s UHP graphite electrode has increased the amount of small-grain raw materials and powders in the raw materials, and the UHP graphite electrode increases the number of impregnations, so its bulk density is higher than normal.
2. In the production process of the UHP graphite electrode products, the particle size of coke is reduced, the strength of carbonaceous raw materials is increased, and the bending strength is correspondingly improved.
3. Rongsheng Group’s UHP graphite electrode has low resistivity and good conductivity and low motor consumption during use.
1. There should be less than two defects or holes on the electrode surface, the max size of which is mentioned in the below chart.
2. There should be no transverse crack on the electrode surface. For the longitudinal crack, the length should be less than 5% of the electrode circumference and the width between 0.3-1.0mm.
The high power graphite electrode is referred to as the hp graphite electrode.
Ash ≤ 0.3%, has no obvious effect on steelmaking;
Elastic Modulus can be adjusted to suit the requirements of use;
Low resistivity, good conductivity and low consumption.
1. The HP graphite electrode of Rongsheng Group own the lower ash content of the petroleum coke needle coke as raw material, so the ash content of the finished product does not exceed 0.3%, and has no obvious influence on steelmaking.
2. In the production of graphite electrodes, Rongsheng Group can grasp the elastic modulus value which is more suitable for the user’s requirements by adjusting the size of the formula and the volume density of the product.
3. Selecting high-quality raw materials and improving the temperature conditions of graphitization can reduce the resistivity of graphite electrodes, which is also the advantage of Rongsheng Group.
1. There should be less than two defects or holes on the electrode surface, the max size of which is mentioned in the below chart.
2. There should be no transverse crack on the electrode surface. For the longitudinal crack, the length should be less than 5% of the electrode circumference and the width in between 0.3-1.0mm.
The RP graphite electrode refers to the regular power graphite electrode.
Low ash, the ash content no more than 0.3%;
Low thermal expansion coefficient, less breakage, and low consumption;
High thermal shock resistance, low crushing and fracture rates;
1. The RP graphite electrode of the Rongsheng Group uses high-quality petroleum coke, needle coke, and coal pitch as raw materials. Low ash, strong oxidation resistance, and low electrical resistivity.
2. High processing precision, high pre-assembly, and precision of graphite electrode body and nipple.
3. Strict inspection of finished products, each step is not sloppy, graphite electrode products have a high pass rate.
1. There should be less than two defects or holes on the electrode surface, the max size of which is mentioned in the below chart(Surface quality of RP graphite electrode, defects are within the allowable range).
2. There should be no transverse crack on the electrode surface. For the longitudinal crack, the length should be less than 5% of the electrode circumference and the width between 0.3-1.0mm.
3. The width of the black area on the electrode surface should be less than 1/10 of electrode circumference and the length less than 1/3 of the electrode.