Silicon carbide
Black Silicon Carbide 10mm for Foundry
Black Silicon Carbide (SiC) is a widely used abrasive material that is also used in the foundry industry for its refractory properties. It is produced by smelting a mixture of high-purity quartz sa...
DESCRIPTION
Black Silicon Carbide (SiC) is a widely used abrasive material that is also used in the foundry industry for its refractory properties. It is produced by smelting a mixture of high-purity quartz sand and petroleum coke at a temperature of about 2,500°C in an electric furnace. The resulting material is then crushed and sized to produce the desired abrasive particle size.
In foundry applications, black silicon carbide is used as a refractory material to withstand high temperatures and thermal shock. It is used as a lining material for furnace hearths and as a crucible material for the melting and casting of metals. Its high thermal conductivity, low thermal expansion coefficient, and excellent resistance to thermal shock make it an ideal material for these applications.
| Property | Description |
|---|---|
| Color | Black |
| Hardness | 9.2 on Mohs scale |
| Density | 3.20-3.22 g/cm³ |
| Melting Point | 2,730°C |
| Thermal Conductivity | 120-200 W/m·K |
| Thermal Expansion Coefficient | 4.5-5.5 × 10^-6 /K |
| Applications | Refractory material for furnace hearths and crucibles; abrasive for grinding and polishing cast iron, steel, and non-ferrous metals; cutting and shaping refractory materials such as fire bricks. |
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