What are the main use of silicon carbide? Emery silicon carbide including black silicon carbide and green silicon carbide, including: black silicon carbide, quartz sand and petroleum coke and high quality silica as the main raw material, through the resistance furnace and. Its hardness between corundum and diamond, mechanical strength higher than corundum, brittle and sharp. Green silicon carbide is made of petroleum coke and high quality silica as the main raw material. The hardness between corundum and diamond, mechanical strength higher than corundum. So what are the main uses of silicon carbide?
1, abrasive - mainly because silicon carbide has high hardness, chemical stability and toughness, so can be used in the manufacture of silicon carbide bonded abrasives, coated abrasives and free grinding, to glass, ceramics, stone processing, iron and non-ferrous metal, hard alloy, titanium alloy, high speed steel cutting tool and grinding wheel etc..
2, refractory material and corrosion resistant materials, mainly because of silicon carbide with a high melting point (resolution), chemical inertness and heat shock resistance, so can be used for silicon carbide abrasives, ceramics kiln used in slab and sagger, zinc smelting industry vertical distillation furnace cylinder with silicon carbide and aluminum electrolytic, crucible lining small pieces of material such as silicon carbide furnace, ceramic products.
3, the use of chemical - because silicon carbide can dissolve in molten steel and molten steel in the oxygen, metal oxide reaction to generate carbon monoxide and silicon containing slag. Therefore, the utility model can be used as a purifying agent for smelting iron and steel, which is used as a deoxidizing agent for steel making and an improvement agent for cast iron. This generally uses low purity silicon carbide to reduce costs. At the same time, it can also be used as raw material for producing four silicon chloride.
4, electrical purposes - used as heating elements, nonlinear resistance components and high semiconductor materials. The heating elements such as silicon carbide (1100 to 1500 DEG C for the work of a variety of nonlinear resistance element, the electric stove), all kinds of valve arrester.