Alumina Foam Ceramic Filters	SiC Foam Ceramic Filters	Zirconia Foam Ceramic Filters

       Foam Ceramic Filter is just developed as a new type molten metal filters to decrease casting flaw in recent years. Foamed ceramics have 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, they 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.

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 low carbon steel, stainless steel , iron, 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.

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

Note:

    1) The product 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.

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