Uses of graphite electrodes:
1. Used in electric arc steelmaking furnace; graphite electrodes are mainly used in electric furnace steelmaking. Electric furnace steelmaking is to use graphite electrodes to introduce current into the furnace. The strong current passes through the gas at the lower end of the electrodes to generate arc discharge, and the heat generated by the arc is used for smelting. According to the capacity of the electric furnace, graphite electrodes with different diameters are used. In order to make the electrodes use continuously, the electrodes are connected by electrode threaded joints. Graphite electrodes for steelmaking account for about 70-80% of the total amount of graphite electrodes.
2. Used in submerged thermal electric furnaces; graphite electrode submerged thermal electric furnaces are mainly used for the production of ferroalloys, pure silicon, yellow phosphorus, matte and calcium carbide, etc., which are characterized in that the lower part of the conductive electrode is buried in the furnace charge. In addition to the heat generated by the electric arc between the furnaces, heat is also generated by the resistance of the furnace material when the current passes through the furnace material. Each ton of silicon needs to consume about 150kg of graphite electrodes, and each ton of yellow phosphorus needs to consume about 40kg of graphite electrodes.
3. Used in resistance furnaces; graphitization furnaces for graphite material products in the production process, melting furnaces for melting technical glass and production, and electric furnaces for silicon carbide are all resistance furnaces. The material management in the furnace is not only a heating resistor, It is the heated object again.
4. A large number of graphite electrode blanks are also used to process various crucibles, graphite boats, hot pressing molds and vacuum electric furnace heating elements and other special-shaped products.
Properties of graphite electrodes:
1. Graphite electrodes have the properties of low electrode consumption, faster processing speed, good machining characteristics, high processing accuracy, small thermal deformation, light weight, easy metal surface treatment, and electrode bonding.
2. Graphite has high high temperature compressive strength, excellent machinability and excellent heat and electrical conductivity, so it is widely used in metallurgical industry, heating furnace, wire electric discharge cutting and other industries. In terms of EDM, the development trend of new graphite electrode materials and production and processing technology has expanded the application range of EDM and improved its performance.
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