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 Ceramic Foam Filters for Casting

       Ceramic Foam Filter is just developed as a new type molten metal filters to decrease casting flaw in recent years. Ceramic Foam Filter has the characters of light weight, high mechanical strength, large specific surface areas, high porosity, excellent thermal shock resistance, chemical corrosion resistance and high temperature stability in molten metal. With the distributing pores net structure, Ceramic Foam Filters are able to increase the surface areas, and absorb the sinter, the liquid metal becomes more pure, waster quality problems such as sand pore and air pore are much less. and the cast quality becomes much better. AceChemPack is the top leading manufacturer, supplier, exporters of ceramic foam filters. Our ceramic foam filters has perfect performance in the world-wide market.

Function & Advantages:

       AceChemPack Ceramic Foam Filters offer the best way to eliminate inclusions, foreign materials that are a major source of quality problems in casting.  and help you meet ever increasing demands for quality.

       Get rid of the  impurity, refractory scrap, solid refractory alloy, sinter, in the molten metal liquid when casting the products, get rid of turbulent flow, reduce the air cavity of castings, raise the quality of cast. So our ceramic foam filters (foamed ceramics) are widely used in the foundry industry such as casting /foundry of  aluminium,  bronze, copper, alloy and aluminum for preventing defects caused by oxides, dross, gas, slag and other impurities.

Types of Inclusions and Their Origins

        Inclusions show up as alumina, silica, intermetallic sludge compounds, and other refractory and ceramic hard particles. The come from many sources: dirty charge materials, tools, ingot, oxides, foundry sand debris on returns metalworking lubricant pigments from trim, gates and risers, machined scrap castings refractory wear debris from furnaces, ladles, and other molten metal handling vessels oxidation of aluminum, magnesium, and other reactive alloy elements in the melt itself sludging in die cast alloys (precipitation of intermetallic compounds at lower temperatures) fluxing salts and/or other metallurgical additives Good furnace practice helps minimize the generation and entrapment of inclusions, but good practice alone often is not enough. You usually need effective filtration to ensure quality, AceChemPack foamed ceramic filter is your best choice.

Item: Foam-SiC (Silicon Carbide Ceramic Foam Filter)

         Silicon carbide is thermally conductive (ceramic foam filters are insulating oxide ceramics). Therefore, there is less temperature gradient between the hot and cold sides of the filter. This means less superheat is required in the hearth, and less sludging occurs because temperature can be maintained in the dip-out well. Actual temperature gradients depend on furnace design, well area, metal throughput, and filter cleanliness. Gradients less than 5 exist with steady metal flow - for example, during continuous dip-out, ladling, or pouring - and when oxide buildup, which is insulating, is removed periodically

Applications:   Filters for Molten Iron & Alloy,  nodular cast iron castings, grey iron castings and malleable castings, and for the filtration of non-ferrous metals
Material:        SiC (Silicon Carbide)
Working Temperature:   1500
Pore Size:      10,20,30,60 PPI


    1) The ceramic foam fitlers of other specifications can also be prepared according to customers' requirement.

    2) PPI (Pores Per Inch), the ppi means the number of holes per inch.

Ceramic Foam Filters' Data










Pore Size





1.3~1.5 g/cm3

0.45~0.7 g/cm3

0.4~0.7 g/cm3

Surface area




Compression Strength




Operation temperature




Thermal Stability

1100℃~room temperature

Not break after 5 times thermal shock testing

Not break after 5 times thermal shock testing

Not break after 3 times thermal shock testing


 Stainless Steel, Alloy




Material Zirconia Silicon Carbide aluminium oxide


 Related topic:

Ceramic Foam Filters Alumnia Ceramic Foam Filters for the filtration of aluminum casting,


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