The raw materials of graphite electrode are mainly petroleum coke and asphalt coke. They are made from petroleum asphalt and coal asphalt by coking treatment, is a low ash, low sulfur, easy to graphitization of the ideal carbon materials. Graphite is an important material in the metallurgical industry, in addition to the crucible, refractory materials mentioned above, but also in steel making furnace, arc furnace as electrode. Artificial graphite electrodes were used in 1955, and natural graphite electrodes have been used in recent years, and have developed rapidly. Although in our subconscious understanding of graphite, it is generally considered a soft material. However, experimental data and application show that the hardness of graphite is higher than that of metal data. Because of its layered structure, graphite has excellent cutting properties in the cutting process. However, due to its high hardness, tool wear will be slightly greater than that of metal cutting tools. At the same time, the high hardness data has a good control effect on the discharge loss. Therefore, the scleros-hardness of graphite electrode data is also one of the specifications for selecting graphite electrode data.500mm Graphite Electrode
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