Generally, ceramic foundry foam filter filtration methods are used to remove entrained solids from molten aluminum alloys before casting. The thermal shock characteristics obtained by pouring liquid aluminum when the CFF filter is placed in the gate system to ensure that the filter can withstand the temperature of the aluminum alloy.
AdTech CFF filters can be made into any shape and size, with excellent thermal shock resistance, sufficient compressive strength, acceptable density and permeability.
The ceramic foundry foam filter is produced by impregnating polyurethane foam with ceramic slurry, then drying, baking, and finally baking the foam in an oven. Before pouring, the filter was experimentally tested to measure size, weight, cold pressure strength and permeability. After pouring, the filter is cut into several parts to measure the macro and micro structure of the filter and to ensure that foreign particles are captured by the filter.
The ceramic filter for aluminum foundry can remove the inclusions generated between the refining system and the mold table. Filter by reducing the content of non-metallic inclusions and oxide film in molten metal. The ability of ceramic foam filters to capture these inclusions is critical to maintaining a clean ingot during the metal solidification process. Therefore, the quality and productivity of downstream operations such as forging, extrusion and rolling are guaranteed.
Ceramic foam filters are used to produce high-quality aluminum plates, aluminum foils and other castings. It can effectively remove the inclusions in the liquid aluminum through physical adsorption and chemical adsorption, thereby eliminating the defects of the casting, improving the quality of the casting, and providing excellent materials for further processing. Ceramic foam filters can be used to remove oxides and other inclusions.
The ceramic foam filter (CFF) produced by AdTech maintains high strength and has excellent resistance to chemical abrasion of castings. The network of pores in the filter provides a larger surface area for inclusions retention. The filter size range is 7, 15, 17, 23, 26 inches, and the pore size is 10 to 60 PPI. For high cleanliness requirements, a double filter with two pores can be used.
Ceramic Foam Filters Feature
-Uniform pore structure
-High surface strength
-High temperature resistance 1100°C
-Excellent resistance to chemicals used in foundries