Alumina Ceramic Foam Filter are just developed as a new type molten metal filter to decrease casting flaw in recent years. With its characteristics of light-weight, high mechanical strength, large specific surface areas, high porosity, excellent thermal shock resistance, erode resistance, high-performance. Al2O3 Ceramic Foam filter is designed for filtering impurities from molten Iron & Alloy, nodular cast iron castings, grey iron castings and malleable castings, Bronze casting, etc. With their excellent resistance to attack and corrosion from molten iron liquid, Al2O3 Ceramic Foam filter can effectively remove inclusions, reduce trapped gas from liquid metal and provide laminar flow, and then the filtered metal is significantly cleaner. Cleaner metal results in higher-quality castings, less scrap, and fewer inclusion defects, all of which contribute to bottom-line profit.
*Filter the surdries in the castings, reduce the casting splracles, reduce the veins flowing when pouring the casting, reduce surface defects, obviously to improve the final-product rate
*Reduce castings manufacturing duration and the sword and tool damages, improve casting surface manufacturing quality
*Strengthen castings anti-pressure and airproof features, strengthen elongate anti-resistance intensity, to improve surface glabrousness
*Predigest casting system designing requirement, reduce the length of horizontal casting channel, improve castings technology output rate
Alumina ceramic foam filters are available in a wide range of sizes and in several standard shapes and pore sizes.
Round Shape (mm):
D*H D=30~200mm H=5~20mm
Φ 40*12, Φ 45*15, Φ 50*15, Φ 55*15, Φ 60*15, Φ 70*20, Φ 90*20, Φ 150*25, Φ 200*25
Square and Rectangular Shape (mm):
L*W*H
L=40~500mm W=40~500mm H=10~50mm
Applications:
*Sand casting
*Investment casting
*Shell casting
*Low-pressure die casting
*Permanent mould casting
*Holding and transfer systems
Advantages:
*Easily installed
*Resistant to molten aluminium
*Non-wetting
*Excellent hot strength
*Dimensionally stable
*Suitable for both horizontal and vertical placement
| Items | | | |
| Material | Alumina | Silicon Carbide | Zirconia |
| Color | White | Grey-black | Yellow |
| Applied Temp.( ° C) | ≤ 1200 | ≤ 1500 | ≤ 1700 |
| Pore Size(PPi) | 8~50 | 8~50 | 8~50 |
| Porosity(%) | 80~90 | 80~90 | 80~90 |
| Bulk Density(g/cm3) | 0.35~0.55 | 0.45~0.65 | 1.0~1.5 |
| Compressive Strength(Mpa) | ≥ 0.8 | ≥ 1.0 | ≥ 1.5 |
| Application | Molten Aluminum and Alloy | Molten Cuprum, Iron and Alloy | Molten Stainless Steel, Alloy and other metal in precision molding |
| No. | Size (mm) | Flow velocity (Kg/s) | Filter capacity (Kg) |
| Gray castiron | Ductile castiron | Gray castiron | Ductile castiron |
| 1 | 30 × 50 × 22 | 2~4 | 1~3 | 45~60 | 15~30 |
| 2 | 40 × 40 × 11 | 2~4 | 1~3 | 45~60 | 15~30 |
| 40 × 40 × 13 | 2~4 | 1~3 | 45~60 | 15~30 |
| 40 × 40 × 22 | 2~4 | 1~3 | 45~60 | 15~30 |
| 3 | 50 × 50 × 13 | 3~6 | 2~4 | 55~90 | 25~45 |
| 50 × 50 × 22 | 3~6 | 2~4 | 55~90 | 25~45 |
| 4 | 60 × 60 × 22 | 4~8 | 3~5 | 65~110 | 40~75 |
| 5 | 66 × 66 × 22 | 5~9 | 4~6 | 80~130 | 45~80 |
| 6 | 75 × 50 × 22 | 4~8 | 5~7 | 65~110 | 40~75 |
| 7 | 75 × 75 × 22 | 9~14 | 6~9 | 145~220 | 70~100 |
| 8 | Φ 50 × 22 | 3~5 | 1~3 | 50~70 | 20~40 |
| 9 | Φ 60 × 22 | 3~6 | 2~4 | 65~110 | 35~60 |
| 10 | Φ 70 × 22 | 4~8 | 3~6 | 75~130 | 40~75 |
| 11 | Φ 76 × 22 | 5~9 | 4~7 | 90~150 | 45~80 |
| 12 | Φ 90 × 22 | 10~15 | 6~9 | 180~260 | 75~110 |
| 13 | 100 × 50 × 22 | 8~12 | 5~8 | 130~200 | 65~90 |
| 14 | 100 × 60 × 22 | 9~14 | 6~9 | 180~260 | 70~100 |
| 15 | 150 × 100 × 22 | 18~25 | 12~16 | 300~ 400 | 150~210 |
| 16 | 150 × 150 × 22 | 35~50 | 24~36 | 400~ 900 | 300~450 |
