Silicon Carbide Widely Used

Silicon carbide  is smelted at high temperature in a resistance furnace using raw materials such as quartz sand, petroleum coke (or coal coke), and wood chips (salt is required when producing green silicon carbide). Silicon carbide is the most widely used and economical type and can be called emery sand or refractory sand. 

Pure silicon carbide is colorless, while the brown to black color produced in industrial processes is due to iron-containing impurities. The rainbow-like luster on the crystal is due to the protective layer of silica produced on its surface.

Industrial silicon carbide appears in light yellow, green, blue or even black due to different types and contents of impurities, and its transparency varies with its purity.
The industrial production method of silicon carbide is to use high-quality quartz sand and petroleum coke to refine it in a resistance furnace. The silicon carbide blocks obtained are made into products of various particle sizes through crushing, acid and alkali washing, magnetic separation and screening or water separation.

Packaging: Customized according to customer requirements.

① Black silicon carbide contains about 95% SiC, and its toughness is higher than green silicon carbide. It is mostly used to process materials with low tensile strength, such as glass, ceramics, stone, refractory materials, cast iron and non-ferrous metals.

② Green silicon carbide contains more than 97% SiC and has good self-sharpening properties. It is mostly used for processing cemented carbide, titanium alloy and optical glass. It is also used for honing cylinder liners and precision grinding of high-speed steel cutting tools.

Silicon carbide products can be divided into many categories, and they are divided into different types according to different use environments. It is generally used more on machinery. For example, when used on mechanical seals, they can be called silicon carbide sealing rings, which can be divided into static rings, moving rings, flat rings, etc. Silicon carbide products of various shapes can also be produced according to customers' special requirements, such as silicon carbide special-shaped parts, silicon carbide plates, silicon carbide rings, etc.

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