Silicon carbide supplier
2022-03-22
Silicon carbide has two commonly used basic varieties, black silicon carbide and green silicon carbide, both of which belong to α-SiC. ①Black silicon carbide contains about 95% SiC, and its toughness is higher than that of green silicon carbide. It is mostly used for processing materials with low tensile strength, such as glass, ceramics, stone, refractory materials, cast iron and non-ferrous metals. ②Green silicon carbide contains more than 97% SiC and has good self-sharpening properties. In addition, there is cubic silicon carbide, which is a yellow-green crystal made by a special process. The abrasive tool used to make it is suitable for super-finishing of bearings, and the surface roughness can be processed from Ra32~0.16 microns to Ra0.04~ 0.02 microns.
Silicon carbide products can be divided into many categories, which are divided into different types according to different use environments. Generally used in machinery more. For example, when used on mechanical seals, it can be called silicon carbide seal ring, which can be divided into static ring, moving ring, flat ring, etc. According to the special requirements of customers, we can also produce various shapes of silicon carbide products, such as silicon carbide special-shaped parts, silicon carbide plates, silicon carbide rings, etc.
Silicon carbide ceramics, one of the products of silicon carbide, has the characteristics of high hardness, high corrosion resistance and high high temperature strength, which makes silicon carbide ceramics widely used.
Applied to sealing rings: Silicon carbide ceramics have good chemical corrosion resistance, high strength, high hardness, good wear resistance, small friction coefficient, and high temperature resistance, so it is an ideal material for manufacturing sealing rings. When it is paired with graphite material, its friction coefficient is smaller than that of alumina ceramics and cemented carbide, so it can be used for high PV value, especially in the working conditions of transporting strong acid and alkali. The SIC-1 silicon carbide normal pressure sintered products produced by our company have the characteristics of high density, high hardness, large production batch, and complex shape products. They are suitable for use in high-performance seals, especially high PV value and Resistant to strong acid and alkali conditions. The SIC-3 silicon carbide ceramic products produced by our company are silicon carbide materials containing graphite. Because the silicon carbide matrix contains a large number of dispersed fine graphite particles, when used in combination with other materials, its friction coefficient is very small and has good self-lubricating properties, especially suitable for making air seals or seals with dry friction conditions Used in the seal, so that the service life of the seal and the reliability of the work are improved.
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