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| Production Process: | Unshaped Refractories/Castables |
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High Strength Sic Ceramic Filter 10ppi 20ppi 30ppi 40ppi
Foam Ceramic are mainly used for filtration of aluminium and aluminium alloys in foundries and cast houses . With their excellent thermal shock resistance and corrosion resistance from molten aluminum, they can effectively eliminate inclusions, reduce trapped gas 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.
Ceramic foam is a new industrial ceramic products with low bulk density (0.25 ~ 0.65) g/cm3, high porosity (60% ~ 90%), and three-dimensional reticulated structure. As ceramic foam has excellent properties such like: high temperature resistance, strong chemical corrosion resistance, and large surface area as a result of high porosity, it is widely used in molten metal filtration to remove undesirable nonmetallic inclusions in the melt.
Physical Properties for Silicon Carbide Ceramic Foam Filters:
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Working Temperature |
≤1540°C |
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Porosity |
80~90% |
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Compression Strength |
≥1.0Mpa |
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Volume Density |
0.3-0.5g/cm3 |
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Thermal Shock Resistance |
1200°C---room temperature 3 times |
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Application |
cast iron, cast copper, cast bronze, cast brass |
Specification for Silicon Carbide Foam Filter
| Dimension (mm) | Pouring rate (kg/s) | Filtration capacity (ton) | ||
| Grey Iron | Ductile Iron | Grey Iron | Ductile Iron | |
| 40*40*22 | 4 | 3 | 65 | 32 |
| 50*50*22 | 6 | 4 | 100 | 52 |
| 75*50*22 | 9 | 6 | 150 | 75 |
| 75*75*22 | 14 | 9 | 220 | 100 |
| 100*50*22 | 12 | 8 | 200 | 100 |
| 100*75*22 | 18 | 12 | 300 | 150 |
| 100*100*22 | 25 | 16 | 400 | 200 |
| 150*150*22 | 50 | 36 | 900 | 450 |
Chemical Composition for Silicon Carbide Ceramic Foam Filters:
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Al2O3 |
SiC |
SiO2 |
Fe2O3 |
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≤28.00% |
≥62.00% |
≤10.00% |
≤0.50% |
Physical &chemical properties for 3 kinds of ceramic foam filter
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Type |
Ceramic Ceramic Filter |
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Material |
Alumina |
Silicon carbide |
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Applied temperature |
≤1200celsius degree |
≤1500celsius degree |
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Color |
White |
Grey black |
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Bulk Density |
0.35~0.55g/cm3 |
0.45~0.65g/cm3 |
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Bore Density |
10~60PPI |
10~60PPI |
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Porosity |
80~90% |
80~90% |
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Bending Strength |
0.6Mpa |
0.8Mpa |
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Compression Strength |
≥0.8Mpa |
≥1.0Mpa |
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Thermal Shock Resistance |
Not break after 6 times thermal shock testing |
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Application |
Molten Aluminum and Alloy |
Molten Iron and Alloy |
Molten Stainless Steel, Alloy and other metal in precision molding |
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