Varieties Of Silicon Carbide Substances

Silicon carbide has two commonly used basic varieties: black silicon carbide and green silicon carbide, both of which belong to the α- SiC. ① Black 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 Green silicon carbide contains over 97% SiC and has good self sharpening properties. It is mostly used for machining hard alloys, titanium alloys, and optical glass, as well as for honing cylinder sleeves and precision grinding high-speed steel tools. In addition, there is cubic silicon carbide, which is a yellow green crystal made by a special process. The grinding tool used for production is suitable for ultra precision machining of bearings, and can process the surface roughness from Ra32 to 0.16 microns to Ra0.04 to 0.02 microns in one go.