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What is the Difference between Black Silicon Carbide and Green SiC
Both black silicon carbide and green silicon carbide are smelted from quartz sand, petroleum coke and sawdust through resistance furnace at high temperature. But their physical properties and uses are very different.
Black silicon carbide contains about 98.5% SiC, and its toughness is higher than that of green silicon carbide. Black silicon carbide does not require additives, and the smelting time is lower than that of green silicon carbide. Black silicon carbide is mainly used to process materials that resist tensile strength, such as glass, ceramics, stone, refractory materials, cast iron, non-ferrous metals, etc. such as glass, ceramics, stone, refractory materials, cast iron and non-ferrous metals. Black silicon carbide has high purity and is also widely used in the manufacture of refractory materials and various abrasive tools.
Green silicon carbide is smelted with salt as an additive. The smelted crystal has high purity and high hardness, and its hardness is between diamond and corundum. Green silicon carbide contains more than 99% SiC and has good self-sharpening properties. It is mostly used for processing hard alloys, titanium alloys and optical glass, and is also used for honing cylinder liners and fine grinding high-speed steel tools. In addition, there is cubic silicon carbide, which is a yellow-green crystal produced by a special process, and the abrasive tools used to manufacture are suitable for superfinishing of bearings.
Green silicon carbide is suitable for grinding copper, brass, aluminum, precious stones, optical glass, ceramics and other hard alloys, metals and hard and brittle non-metallic materials. Green silicon carbide can also be used in ceramic materials.
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JBT produces and supplies silicon metal and ferrosilicon products, mainly products are silicon metal 553, 441, 421, 411 3303,2202, 97, silicon carbide, carbon raiser for steelmaking and casting industries. We also make electrolytic manganese metal, inoculants and nodulizers.
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