The electric arc furnace graphite electrode is a heat conductive material that releases electric energy in the form of an electric arc furnace to heat and melt the charge.The main raw materials are needle coke and petroleum coke. The medium asphalt as a binder, after calcination, batching, kneading, pressing, co-firing, graphitization and machining, the product has low electrical resistivity, good electrical and thermal conductivity, good oxidation resistance, thermal shock resistance and mechanical vibration resistance, and mechanical High strength, high machining strength, etc.
Why Choose Graphite Electrode Application in the Arc Furnace
1.Arc furnace uses a graphite electrode as a conductive material, and transfers the heat energy to the charge through the arc discharge to melt the charge.
2.Electric arc furnace has three electrodes, each of which is composed of 3 to 4 electrodes connected by a tapered joint.
3.The heat during smelting is generated by the arc furnace discharge generated between the electrode and the metal charge.
4.Compared with other conductive materials, graphite materials have some excellent and irreplaceable properties under high temperature conditions.
5.The graphite electrode is used at a relatively high temperature, and the sublimation temperature can reach 3650 ℃. Graphite electrode is a high temperature material capable of withstanding high-temperature conductivity. In actual use, no other refractory material can be substituted, the strength of the graphite electrode rises with temperature at high temperature. Increasingly, the graphite electrode has a lower coefficient of thermal expansion than other metals.
Graphite Electrode Advantage for the Electric Arc Furnace
Graphite electrode for the arc furnace has the characteristics of low resistivity, good electrical and thermal conductivity, good oxidation resistance, strong resistance to thermal shock and mechanical vibration, high mechanical strength and high mechanical processing strength.
How to Select the Graphite Electrode Use for the Arc Furnace
The choice of graphite electrode is more or less related to the capacity of the electric furnace, the type of electric furnace, the size of the transformer, the magnitude of the secondary current, and the smelting steel. RongSheng refractory supplier can match the appropriate electrode according to the furnace type, transformer size and current. .
How to Selec the Raw Material Manufacture the Graphite Electrode
1.Production of ordinary power graphite electrodes can be made from petroleum coke of general quality.
2.High quality graphite coke and high-quality graphite coke can be used as raw materials.
3.Production of ultra-high power graphite electrodes using high quality needle coke as raw material.
4.Production of high-purity graphite electrodes requires the use of petroleum ash with very low ash.
Graphite Electrode Standard Classification
1. Ordinary power electric furnace with ordinary power graphite electrode.
2. High-power electric arc furnace with high-power graphite electrode.
3. Ultra high power graphite electrode for ultra high power electric arc furnace.
AC Electric Arc Furnace Configuration Graphite Electrode Classification
1.10~30t electric arc furnace with graphite electrode with diameter of 300~400mm
2.30~50t electric arc furnace with diameter 450mm is graphite electrode
3.60~80t electric arc furnace with 500mm graphite electrode
4.100~170t electric arc furnace with 550~600mm diameter graphite electrode
5.200t electric arc furnace with graphite electrode with diameter of 600~700mm
6.250~300 electric arc furnace with graphite electrode diameter 700mm graphite electrode
DC Arc Furnace Configuration Graphite Electrode Classification
1.30t electric arc furnace with 450mm diameter graphite electrode
2.60t electric arc furnace with 500mm diameter graphite electrode
3.70~80t electric arc furnace with 600mm diameter graphite electrode
4.100~130t electric arc furnace with 700mm diameter graphite electrode
5.150t electric arc furnace with 750mm diameter graphite electrode
Graphite Electrode of Using and Transport Precautions
1. Special tools should be used for lifting the graphite electrode. Graphite electrode is strictly forbidden to use the crowbar.
2. The graphite electrode is prohibited from rain, snow and water leaching and should be kept dry.
3. Before connecting the graphite electrode, carefully check whether the electrode joint hole is intact, whether the joint thread is damaged, whether the joint bolt is lost.
4. Dust and debris in the joints and joint holes must be cleaned with compressed air. Do not use other items to clean.
5. Graphite electrode should be dried in a drying oven before use. The furnace temperature is not more than 150 °C, and the drying time is not less than 30 hours.
6. The electrodes should be close to each other. Use professional torque to move the hand to prevent excessive or too little force. Never allow tilting.
7. The electrode chuck should be clamped, not loose and in good contact, and should not generate arcing.
8. In order to avoid electrode breakage, the small piece of material in the furnace should be placed in the upper part, and the insulating block should not be installed. The working current of the electrode should be compatible with the allowable current of the electrode of the specification.
