Porous ceramic filter plates (also known as ceramic foam filters) are high-performance porous materials used for molten metal filtration and purification in foundry and metallurgy industries. They effectively remove inclusions, gas bubbles, and impurities, significantly improving metal quality, mechanical properties, and casting yield.
Common materials include Alumina (Al₂O₃), Silicon Carbide (SiC), and Zirconia (ZrO₂).
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Porous Ceramic Filter Plates Material Characteristics & Applications
Alumina (Al₂O₃)
- Properties: Good thermal stability, moderate cost, excellent chemical resistance to non-ferrous metals.
- Applications: Mainly used for aluminum, copper, and other non-ferrous alloys.
- Advantages: Cost-effective, widely available, suitable for mass production.
Silicon Carbide (SiC)
- Properties: High strength, excellent thermal shock resistance, good high-temperature performance.
- Applications: Used for iron, steel, and large castings with high pouring temperatures.
- Advantages: Strong and durable, less likely to crack during fast pouring.
Zirconia (ZrO₂)
- Properties: Extremely high melting point, superior chemical stability, strong corrosion resistance.
- Applications: Used for superalloys, titanium alloys, high-purity steels, and special precision castings.
- Advantages: Highest purity and filtration performance; ideal for high-value, high-temperature melts.https://www.chempackings.com/ceramic-foam-filter/sic-ceramic-foam-filter-for-metal-filtration.html
How to Choose the Right Material
- Choose Alumina (Al₂O₃)If you cast aluminum, copper, or general non-ferrous alloys at moderate temperatures and require a cost-efficient solution.
- Choose Silicon Carbide (SiC)If you cast cast iron, steel, or large-volume castings with high pouring temperature and need strong thermal shock resistance.
- Choose Zirconia (ZrO₂)If you produce high-temperature alloys, high-purity steels, or precision critical castings and demand top-level purity and stability.