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Manufacturer Graphite Powder for Steel and Casting Recarburizer
Metallurgy grade silicon carbide is used as an abrasive, and more recently as a semiconductor and diamond simulant of gem quality. The simplest manufacturing process is to combine silica sand and carbon in an Acheson graphite electric resistance furnace at a high temperature, between 1,600 °C (2,910 °F) and 2,500 °C (4,530 °F). Fine SiO2 particles in plant material (e.g. rice husks) can be converted to SiC by heating in the excess carbon from the organic material. The silica fume, which is a byproduct of producing silicon metal and ferrosilicon alloys, also can be converted to SiC by heating with graphite at 1,500 °C (2,730 °F).
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Foundry Grade Black Silicon Carbide
Foundry Grade Black Silicon Carbide main used in foundries. As you know the cast iron contain C: 2-4%, Si: 1-3%, and Carbon and silicon are the main elements affecting the microstructure of cast iron. Foundry Grade Black Silicon Carbide has made carbon alloyed in it, so it can provide the two elements effectively. Lately Foundry Grade Black Silicon Carbide also be used in steel making, especially steel scraps melting. Foundry Grade Black Silicon Carbide serves as deoxidizer and efficient heating agent (Si&C: 6.58kcal/g, 1.24kcal/g each) and recarburizer. With SiC at least 90%, the impurity is very less, so the input is easy to control.
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