Round Square Foundry Alumina Ceramic Foam Filter 80-90% Porosity
Aluminum oxide foundry foam ceramic filter for filtration of cast iron and non-ferrous alloys. To obtain good quality metal castings, the minimum content of foreign impurities in the metal is crucial.
Ceramic Filters Solve Two Main Problems:
- Removal of solid particles from the melt
- Elimination of flow turbulence, which due to oxidation of the metal can become a source of inclusions in the castings
Technical Specifications
| Property |
Value |
| Working Temperature |
≤1200°C |
| Porosity |
80~90% |
| Compression Strength (Room Temperature) |
≥1.0Mpa |
| Volume Density |
≤0.5g/cm3 |
| Thermal Shock Resistance |
800°C to room temperature 5 times |
| Application |
Non-ferrous and alumina alloys, high temperature gas filter, chemical fillings and catalysis carrier |
Chemical Composition
| Component |
Percentage |
| Al2O3 |
80~82% |
| SiO2 |
5~6% |
| Others |
12~15% |
Pouring Rate and Filtration Capacity
| Dimensions (mm) |
Dimensions (inch) |
Pouring Rate (kg/s) |
Filtration Capacity (ton) |
| 178x178x50 |
7x7x2 |
0.2-0.6 |
5 |
| 228x228x50 |
9x9x2 |
0.3-1.0 |
10 |
| 305x305x50 |
12x12x2 |
0.8-2.5 |
15 |
| 381x381x50 |
15x15x2 |
2.2-4.5 |
25 |
| 430x430x50 |
17x17x2 |
3.0-5.5 |
35 |
| 508x508x50 |
20x20x2 |
4.0-6.5 |
45 |
| 585x585x50 |
23x23x2 |
5.0-8.6 |
60 |
Non-metallic inclusions in molded products reduce strength, ductility, resistance to creep and corrosion, fatigue strength and wear resistance. Large inclusions increase the risk of destruction and can influence the fluidity and casting properties of the melt.
Materials
- Aluminum oxide (Al2O3)
- Zirconia (ZrO2)
- Silicon carbide (SiC)
- Various ceramic compositions
Filter Comparison
| Property |
Ceramic Foam Filters |
Extruded Filter |
| Filter Materials |
Alumina, SiC, Zirconia |
Cordierite-Mullite |
| Applications |
Aluminum, Iron, Steel alloys |
Grey iron, ductile iron, aluminum alloy |
| Volume Density (g/cm3) |
0.4 - 1.0 |
0.8 - 1.2 |
| Hole Density (ppi) |
8 - 40 |
100 - 300 |
| Open Porosity (%) |
80 - 90 |
35 - 60 |
| Maximum Working Temperature (°C) |
1100 - 1700 |
> 1500 |
| Compressive Strength (MPa) |
0.8 - 1.5 |
> 2 |
| Thermal Shock Resistance |
3 - 6 cycles |
5 cycles |
Quality Control