400 mesh black silicon carbide 30 microns 32 microns
Black silicon carbide is made of quartz sand, petroleum coke (or coal coke), wood chips and other raw materials in a resistance furnace by high temperature smelting, into black opaque, hexagonal crystal, Mohs hardness9.16-9.5.Second only to diamond and boron carbide, the performance is brittle and sharp and has a certain degree of conductivity.
Black silicon carbide containsSiCabout98%Its toughness is higher than that of green silicon carbide, and it is mostly used to process materials with low tensile strength, such as glass, ceramics, stone, refractories, cast iron and non-ferrous metals, optical glass, ceramics and other non-metallic materials.
| Black silicon carbide physical properties | |
| Mohs hardness | 9.15 |
| melting point | 2250℃ |
| Maximum operating temperature | 1900℃ |
| True density | 3.2-3.4g/cm³ |
| microhardness | 2840-3320kg/m㎡ |
| Black silicon carbide chemical composition | |
| SiC | ≥98% |
| F.C | ≤0.30% |
| H2O3 | ≤1% |
| SIO2 | ≤1% |
| Fe2O3 | ≤0.30% |
| Magnetic content | ≤0.02 |
| Model Black silicon carbideGranular sand 8# 12# 14# 16# 20# 22# 24# 30# 36# 40# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220 # Black silicon carbideMicronized In标 W63 W50 W40 W28 W20 W14 W10 W7 W5 W3.5 W2.5 W1.5 W0.5 National standard F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F2000 Daily standard 240# 280# 320# 360# 400# 500# 600# 700# 800# 1000# 1200# 1500# 2000# 2500# 3000# 4000# 6000# 8000# | |
| Black silicon carbide uses: Black silicon carbide is made of quartz sand , petroleum coke and high-quality silica as the main raw materials , and is smelted through high-temperature resistance furnace. Its hardness is between corundum and diamond , its mechanical strength is higher than that of corundum , and it is brittle and sharp. Green silicon carbide is made of petroleum coke and high-quality silica as the main raw materials , adding salt as an additive, and is smelted through a resistance furnace at high temperature. Its hardness is between corundum and diamond , and its mechanical strength is higher than that of corundum. So what are the main uses of silicon carbide ? 1. Abrasives – mainly because silicon carbide has high hardness, chemical stability and certain toughness, so silicon carbide can be used to manufacture bonded abrasives, coated abrasives and free grinding to process glass and ceramics , stone, cast iron and some non-ferrous metals, hard alloys, titanium alloys, high-speed steel tools and grinding wheels, etc. 2, refractory materials and corrosion-resistant materials—Mainly because silicon carbide has a high melting point(Decomposition), chemical inertness and thermal vibration resistance, so silicon carbide can be used in abrasives, ceramic products firing kiln used in the shed and box, zinc smelting industry vertical cylinder distillation furnace silicon carbide bricks, aluminum electrolytic cell lining, crucibles, small furnace materials and other silicon carbide ceramic products. 3, chemical use–Because silicon carbide can decompose in molten steel and react with oxygen separation and metal oxides in molten steel to form carbon monoxide and silicone-containing slag. Therefore, it can be used as a purifying agent for smelting steel, that is, as a deoxidizer for steelmaking and a cast iron structure improver. This generally uses low-purity silicon carbide to reduce costs. At the same time, it can also be used as a raw material for the manufacture of silicon tetrachloride. 4, electrician use–Used as heating elements, nonlinear resistance elements and high semiconductor materials. Heating elements such as silicon carbon rods(Applies to1100～1500Various electric furnaces working at °C), nonlinear resistance elements, various lightning arresting valve plates. 5, other formulated into far-infrared radiation coating or made of silicon carbide silicon board with far-infrared radiation dryer. | |
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