Introduction
It is made by Vacuum casting and flexible mold forming, features smooth surface,erosion resistance , heat insulation and high cost performance.
Physicochemical indexes
Material denstity Kg/m3 | 135-145 |
Flexure strength Mpa | ＞6 |
SiO2 | 60% |
Al2O3 | 15% |
CaO | 15% |
Features
- High Geometric processing precision, easy to install
- High strength, long service life, low maintenance cost
- Good insulation
- Non stick aluminum, no pollution to molten aluminum
- Erosion resistance, corrosion resistance.
Launder Lining
Introduction
It is made of high strength castable. After curing for 72 hours in the greenhouse and high temperature sintering at 1300℃.the material has good resistance to aluminum and infiltration within 950℃ ,no aluminum sticking within 1200℃, it is used for transportation and heat preservation of molten aluminium.
Product Performance
Cold compressive strength | 1.3Mpa | Cold bending strength | 1.0Mpa |
Heating permanent line changes 1000℃*3h | ＜0.1 | ||
Density | 1350 Kg/m3 | Thermal conductivity | 0.25 |
Continuous service temperature | 950℃ | Refractoriness | 1100℃ |
AI2O3 | 55.8% | Si02 | 38.5% |
Advantages
- launder lining can be reused. The surface is sprayed with boron nitride coating to improve the service life (the average service life is more than one year)
- Low coefficient of thermal expansion, strong thermal shock resistance and good thermal shock resistance
- High temperature resistance, corrosion resistance, erosion resistance and no pollution to molten aluminium
- Easy to clean, non stick aluminium, no slag inclusions
Launder dam
Introduction
It is usually assembled in the integral launder, which used for intercepting and controlling the flow and controls the molten aluminium in the casting process.
Product Performance
Maximum service temperature | 1250℃ | Continuous service temperature | 800℃ |
Coefficient of thermal expansion | 1.45*10-6 | Rupture modulus | 22.3Mpa |
Thermal conductivity | 0.95w/m.k | AI2O3 | 21% |
Si02 | 72.5% | CaO | 3.7% |
Others | 2.8% |
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Product Advantages
- The surface is sprayed with boron nitride coating, which does not stick aluminum and increases the service life
- High strength, erosion resistance, impact resistance and thermal shock resistance
- smooth surface and does not delaminate,no pollution to molten aluminium