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Applications of silicon carbide

Source:http://www.ayhbyjnc.com/news/2.html    Release time:2020-12-04    Click:292

  Silicon carbide has four main applications: functional ceramics, high refractories, abrasives and metallurgical raw materials. Silicon carbide coarse material can be supplied in large quantities, so it cannot be regarded as high-tech products, and the application of nano-sic powder with high technical content cannot form economies of scale in a short time. As abrasive, can be used to make abrasive, such as grinding wheel, whetstone, grinding head, sand tile, etc. As metallurgical deoxidizer and high temperature resistant materials. High purity single crystal, can be used to manufacture semiconductor, manufacture silicon carbide fiber.

  Main uses of silicon carbide: linear cutting of 3-12 inch monocrystalline silicon, polycrystalline silicon, potassium arsenide, quartz crystal, etc. Solar photovoltaic industry, semiconductor industry, piezoelectric crystal industry engineering processing materials. Used in semiconductor, lightning rod, circuit components, high temperature applications, ULTRAVIOLET light detector, structural materials, astronomy, disc brake, clutch, diesel particulate filter, filament pyrometer, ceramic film, cutting tools, heating elements, nuclear fuel, jewelry, steel, protective equipment, catalyst support and other fields.

  Abrasive abrasive tools, silicon carbide is mainly used for grinding and polishing of grinding wheels, sandpaper, abrasive belts, whetstone, grinding blocks, grinding heads, grinding paste, monocrystalline silicon, polycrystalline silicon and piezoelectric crystals in the electronic industry in photovoltaic products. With corrosion resistance, high temperature resistance, high strength, good thermal conductivity, impact resistance and other characteristics, silicon carbide on the one hand can be used for various smelting lining, high-temperature kiln components, silicon carbide board, liner, supporting parts, sagger, silicon carbide crucible and so on.

  On the other hand, it can be used as high temperature indirect heating materials for non-ferrous metal smelting industry, such as vertical tank distillation furnace, distillation furnace tray, aluminum electrolytic cell, copper melting furnace lining, zinc powder furnace arc plate, thermocouple protection tube, etc. For the production of wear resistance, corrosion resistance, high temperature resistance and other advanced silicon carbide ceramic materials; It can also make rocket nozzles, gas turbine blades and so on. In addition, silicon carbide is also one of the ideal materials of solar water heater for highway and aviation airstrip.

  Silicon carbide can be used as a deoxidizer for steelmaking and as a modifier for cast iron structure. It can also be used as a raw material for making silicon tetrachloride and is the main raw material for silicone industry. Silicon carbide deoxidizer is a new kind of compound deoxidizer, replaced the traditional solid silicon powder carbon powder, and compared with the original process of various physical and chemical performance is more stable, deoxidization effect is good, deoxidize shorter time, save energy and improve the efficiency of steel, improve the quality of steel, reduce raw material consumption, reduce environmental pollution, improve working conditions, improve the comprehensive economic benefits of the electric furnace has important value.

  The use of silicon carbide has high temperature resistance, high strength, good thermal conductivity, impact resistance, as high temperature indirect heating materials, such as solid pot distillation furnace, distillation furnace tray, aluminum electrolytic cell, copper melting furnace lining, zinc powder furnace arc plate, thermocouple protection tube. With the characteristics of corrosion resistance, thermal shock resistance, wear resistance and good thermal conductivity, silicon carbide is used for lining of large blast furnace to improve its service life. Silicon carbide is especially suitable for the production of gas seal or dry friction conditions in the use of seals, so that the service life of seals and work reliability.

  Carborundum, also known as silicon carbide, is made of quartz sand, petroleum coke (or coal coke), wood chips (need to add salt when producing green silicon carbide) and other raw materials through high temperature smelting resistance furnace. The hardness of silicon carbide is second only to diamond, and it has strong wear-resisting performance. It is the ideal material for the lining of wear-resisting pipe, impeller, pump chamber, cyclone and ore bucket, and its wear-resisting performance is cast iron. Rubber service life 5-20 times & DEF is also one of the ideal materials for aviation airstrips.

  Making use of the characteristics of thermal conductivity, thermal radiation and high thermal strength, thin sheet kiln furniture can not only reduce the capacity of kiln furniture, but also improve the capacity and product quality of kiln furniture, shorten the production cycle, making it an ideal indirect material for ceramic glaze baking and sintering. Make use of good heat conduction and heat stability, make heat exchanger, burn up reduce 20%, save fuel 35%, make productivity increase 20-30%, especially the mine concentrator uses the inside of the discharge conveying pipe, its wear-resisting degree is the common wear-resisting material 6-7 times.

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