What are the classification and characteristics of ceramic foam filter

Ceramic foam filter: approximately appeared in 1978, was used in nonferrous alloy, beginning in 1985 for cast iron, cast steel, its production process with organic precursors for the skeleton, coated with high temperature material slurry, after high temperature sintering, have a good filtering effect. Moderate intensity, filtering effect is the best. At present, it is widely used in the foundry industry, especially in automobile casting.

According to the classification of ceramic foam filter material, there are three main types: aluminum oxide, silicon carbide and zirconium oxide. Alumina is mainly used in aluminum and Aluminum Alloy castings; silicon carbide mainly used in iron and iron alloys; zirconium oxide is mainly used in steel and alloy steel.

Characteristics of foam ceramic filter

Foam ceramic filter, its ability to filter metal solution slag and metal impurities is much stronger than other filters, the filter has a comprehensive role of physical and chemical. The large inclusions are physical screening, trapped in the surface of the filter, and tiny inclusions due to the chemical affinity function is adsorbed on the surface of the filter, the side wall or pores. Therefore, impurities can be effectively filtered out of various sizes, including impurities smaller than the filter pores. This kind of filter can also be able to comb the entire disordered metal liquid flow, reduces the turbulent flow, causes the metal fluid to flow to become smooth and clean.