Black Silicon Carbide Is Suitable For Refractory And Grinding Applications
Short Description
Applications
Black Silicon Carbide is used to make various bonded abrasives, for grinding and polishing stones, and for processing metal and non-metallic materials with low tensile strength, such as gray cast iron, brass, aluminum, stone, leather, rubber, etc.
|
Items |
Unit | Index | |||
|
Chemical Composition |
|||||
| For abrasives | |||||
| Size | SiC | F.C | Fe2O3 | ||
| F12-F90 | % | 98.5min | 0.5max | 0.6max | |
| F100-F150 | % | 98.5min | 0.3max | 0.8max | |
| F180-F220 | % | 987.0min | 0.3max | 1.2max | |
| For refractory | |||||
| Type | Size | SiC | F.C | Fe2O3 | |
| TN98 | 0-1mm
1-3mm 3-5mm 5-8mm 200mesh 325mesh |
% | 98.0min | 1.0max | 0.8max |
| TN97 | % | 97.0min | 1.5max | 1.0max | |
| TN95 | % | 95.0min | 2.5max | 1.5max | |
| TN90 | % | 90.0min | 3.0max | 2.5max | |
| TN88 | % | 88.0min | 3.5max | 3.0max | |
| TN85 | % | 85.0min | 5.0max | 3.5max | |
| Melting point | ℃ | 2250 | |||
| Refractoriness | ℃ | 1900 | |||
| True density | g/cm3 | 3.20min | |||
| Bulk density | g/cm3 | 1.2-1.6 | |||
| Mohs hardness | --- | 9.30min | |||
| Colour | --- | Black | |||
Description
Black Silicon Carbide is produced by fusion of quartz sand, anthracite and high-quality silica in electric resistance furnace. The SiC blocks with most compact crystal structure near the core are carefully selected out as raw materials. Through perfect acid and water washing after crushing, the carbon content reduced to the minimum and then the shining pure crystals are obtained. It is brittle and sharp, and has certain conductivity and thermal conductivity.
It has stable chemical properties, high conductivity coefficient, low coefficient of thermal expansion and excellent wear-resistance, and is suitable for refractory and grinding applications.
