Ceramic Foam Filter

Ceramic foam filter is a special technology applied for foundry industry. It has a foam-like porous structure of ceramic products. Main characteristics are light weight, chemical stability, large surface area through-hole rate, corrosion resistance, high strength, and good thermal shock resistance. We apply these filters in foundry industry, wind power industry, vehicle parts manufacturing industry, and metal parts manufacturing industry. Himor produces 3 types filters like Silicon carbide ceramic foam filter, Alumia ceramic foam filter, and Zirconia ceramic foam filter. You can choose from these three types according to your industry requirement. Also you can choose different PPI(from 10ppi, 20ppi, 30ppi, 40ppi, 50ppi) and shapes from Himor. We accept all sizes and shapes customization.

Silicon carbide ceramic foam filter

Silicon carbide ceramic foam filter(SIC ceramic foam filter)
Color: Dark Grey
PPI: 10ppi, 20ppi, 30ppi, 40ppi, 50ppi
Working Temperature: ≤1500℃
Thermal shock resistance(1100℃):≥2
Compressive strength:>0.9Mpa
Porosity: ≥80%
Sample: Support
Customization: Sizes and shapes
Application:Ductile Cast Iron, Malleable Cast Iron, Gray iron, and other Cast Iron.

Alumina ceramic foam filter

Alumina ceramic foam filter
Color: White
PPI: 10ppi, 20ppi, 30ppi, 40ppi, 50ppi
Working Temperature:≤1100℃
Thermal shock resistance(1100℃):≥2
Compressive strength:>0.8Mpa
Porosity: ≥80%
Sample: Support
Customization: Sizes and shapes
Application:Aluminium Aluminium alloys and other Non-ferrous alloys.

Zirconia ceramic foam filter

Zirconia ceramic foam filter
Color: Yellow
PPI:10ppi, 20ppi, 30ppi, 40ppi, 50ppi
Working Temperature:≤1700℃
Thermal shock resistance(1100℃):≥2
Compressive strength:>1.2Mpa
Porosity: ≥80%
Sample: Support
Customization: Sizes and shapes
Application:High melting point metal alloys like Steel, Alloy Steel, and Stainless Steel.

Ceramic foam filter Advanced features

Ceramic Foam Filter can Filter waste slag to reduce the harm of slag to castings.
Reduce gas and inclusions that are contained in the casting.
Reduce the turbulence level of molten metal when filling the mold
Reduce surface defects in castings, and significantly reduce the rejection rate of casting.
Increase the compressive sealing of casting, increase elongation and tensile strength of casting, improved surface finish of casting, improve the mobility of molten metal, increase the filling capacity and the feeding capacity of melt.
Ceramic foam filter can simplify the casting system, reduce the length of the lateral flow channel, improve casting yield.
Reduce the processing time and tool abrasion, improve surface quality of casting.

How to use Ceramic Foam Filtration Slice?

We can not use the filter to control or affect the pouring speed. Although the filter has some effect on the pour speed, it cannot be used as a tool to control the pour speed. Its main work is still filtering and rectifying.
In order to ensure the sufficient filtration of the molten metal, the filter must have a certain pressure head when starting the filtration to overcome the obstacle of surface tension. The size of the pressure head has a considerable effect on the starting of the filtration. Generally, it should be larger than 300 mm. The indenter of the casting should be correspondingly larger.
We should seal the overlapping parts of the foam ceramic filter and the mold as much as possible to prevent the metal liquid from leaking from the gap. This does not have the effect of filtering. For some sand molds such as wet molds, the foam ceramic filter alone will easily cause the sand to fall off the part where we place the filter. In this way, a filter seat must be designed to support the filter so that the filter does not move under the impact of the molten metal. , to prevent sand particles from entering the cavity and metal liquid loss.
Before using the foam ceramic filter, the dust on the surface and the internal fragments should be blown off with compressed air to avoid impurities contaminating the metal liquid.
Avoid getting damp during transportation and storage, and store it in a dry environment. If necessary, bake it before use to make the filter fully dry.
In addition, the filter is a fragile product and should be handled with care to prevent damage. We do rigorous testing on product packaging before shipping. After receiving the goods, the customer needs to pay attention to the protection work when handling. More…