Introduction
Nitride bonded silicon carbide riser tube is used in non-ferrous metal casting industry, especially in aluminum alloy wheel low-pressure casting industry.
Property
| Composition | 74% SiC+23% Si3N4 |
| Bulk Density g/cm3 | 2.5 |
| Flexural Strength MPa | 120 |
| Apparent Porosity % | <20 |
| Coeff of Thermal Exp | 4.5x10-6 |
| Thermal Conductivity (1200°C) W/m.K | 15 |
Features
- Good thermal shock resistance, no slag, no cracking under high temperature
- Gas-tight
- Can not be wetted by non-ferrous metal melts such as aluminum liquid
- Excellent corrosion resistance.
Coatings
To extend the service life of our NBSC riser tubes, two coatings can be applied:
- Antioxidation coatings for inwall and outerwall
- Anti-slag(aluminum) coating (e.g. BN)