As is well known, carbon electrodes are electrodes composed of elemental carbon. Carbon electrodes have the advantages of excellent electrical and thermal conductivity, heat resistance, chemical resistance, high mechanical strength, and easy processing. Widely used in metallurgy, chemical industry, electrochemistry, and other industries, such as electrodes for arc furnaces, arc furnace electrodes, electrodes for electrolysis, electrodes for batteries, etc.
Carbon Electrode Performance Requirements
The main raw material for the manufacture of carbon electrodes is preheated anthracite or anthracite, to which some recycled materials (broken electrodes, etc.) are added or cast coke. Use a bituminous coal pitch or pitch containing anthracene oil as a binder. Add a small amount of natural graphite and make it through extrusion molding and roasting. The performance of arc furnace electrodes, the provisions of the Ministry of Metallurgical Industry Standard Heavy Color 1922-55 have the following points:
- The joint and joint paste is supplied with the electrode. The number is one connector per electrode, and 5 kg of connector paste per ton of electrode.
- After the electrode is connected with a nipple joint, the gap between its end surfaces should not exceed 0.5 mm.
- When the electrodes are connected together, the deviation of the centerline of one electrode from the centerline of the other electrode shall not exceed 3 mm.
- The bending of any diameter electrode cannot exceed 0.5% of its length. It is allowed to supply shorter electrodes, but not shorter than one meter, the number of which shall not exceed 10% of the total weight in each batch.
- The depth of the falling block on the edge of the arc furnace electrodes end should not be greater than 10 mm, and the total length should not be greater than 40 mm. The drop-out of the thread of the joint hole and the joint is allowed to be no longer than 15 mm in length and no more than two places. No transverse cracks are allowed on the arc furnace electrodes and the joint.
Transport and Storage of Arc Furnace Electrodes
The transportation and storage of the arc furnace electrodes should do the following work:
- The electrode should be stored in a dry and ventilated warehouse, and the pad should be more than 20 cm away from the ground and no less than 500 mm away from the wall.
- The original packaging should be kept intact, stacked horizontally, and the stack height should not exceed 1.5 meters.
- Distribute materials according to the principle of first-in-first-out to avoid moisture deterioration after long-term storage.
- During transportation, the electrodes shall be strictly protected from rain and snow.
Graphite Electrode for DC Electric Arc Furnace
The diameter of the graphite electrode used in the DC arc furnace is also calculated based on the capacity of the electric furnace and the allowable current density of the electrode. For the ultra-high power electric furnace with the same input power, the DC furnace using one UHP graphite electrode has a larger electrode diameter. For example, the AC arc furnace with a capacity of 150t uses electrodes with a diameter of 600mm. For the DC arc furnace of the same capacity, electrodes with a diameter of 700 to 750 mm are used. The quality requirements of graphite electrodes for DC arc furnaces are higher than those used for AC arc furnaces.
Arc Furnace Electrodes Supplier
Rongsheng graphite electrode supplier, sell graphite electrode to all regions of the world. According to customer feedback, the quality of Rongsheng’s graphite electrode products is reliable. In actual production and use, it is not easy to break the electrode. If the customer can guarantee the standard operation of the production process, it will greatly help to save the production cost.
