Ceramic Foam Filters (CFF) are indispensable high-temperature filtration components for modern foundry and metallurgical industries. Featuring a unique 3D interconnected open-cell structure, they efficiently remove inclusions and impurities from molten metal, stabilize liquid flow, and significantly improve casting quality and product yield. With excellent thermal stability, chemical corrosion resistance and robust mechanical strength, ceramic foam filters have become the preferred purification solution for precision metal casting worldwide.
We provide standard and custom ceramic foam filters to suit diverse industrial casting conditions. Three mainstream materials are available: alumina, silicon carbide and zirconia. Alumina filters are ideal for low-temperature aluminum alloy casting. Silicon carbide filters withstand temperatures up to 1560°C, perfect for copper alloys and medium-temperature metal processing. Zirconia filters deliver superior erosion resistance, specially designed for high-purity steel and stainless steel casting. Our filters cover a complete pore size range from 10 PPI to 60 PPI. 10–20 PPI models offer high flow rates for large ingots, 20–30 PPI balances precision and efficiency for regular billet production, and 30–60 PPI ultra-fine filters eliminate micro impurities for thin-wall precision castings. All products maintain 75%–85% high porosity to ensure smooth metal flow and stable filtration performance.
Manufactured for harsh working environments, our CFFs feature outstanding thermal shock resistance and strong resistance to molten metal scouring. They cause no secondary contamination and retain stable structural integrity under continuous high-temperature operation. Compatible with sand casting, permanent mold casting and investment casting, these filters can be flexibly installed in pouring basins, runners and sprues for effective inline metal purification.
Widely used in ferrous and non-ferrous metal production, our filters purify molten aluminum for automotive parts, aerospace components and architectural profiles. They remove oxides from copper and brass to enhance electrical conductivity, while high-strength silicon carbide and zirconia models refine molten steel for high-precision, durable mechanical components.
High-quality ceramic foam filters effectively reduce casting defects such as porosity and slag inclusions, lower scrap rates and cut production costs. Manufactured under strict ISO standards, our filters deliver consistent and reliable performance for mass production, helping foundries upgrade processes and improve economic benefits.
We offer professional customized solutions based on your casting materials, working conditions and product specifications. Support for non-standard customization and bulk orders with sufficient stock and stable delivery.
Post time: Jun-03-2026
