Home > News > Zirconia Ceramic Foam Filters
Zirconia Ceramic Foam Filters
2022-05-17

Zirconia ceramic foam filters are foam ceramic materials. How much do you know about foam ceramics?

zirconia ceramic foam filters

Foam Ceramics

Foam ceramics are porous materials with high-temperature characteristics, with their porosity between 20% and 95%. The pore sizes range from nanometers to micrometers. The maximum operating temperature can reach 1600°C. Foam ceramics have high porosity and a large specific surface area. They are lightweight, high-temperature resistance, and corrosion resistant. They have the functions of heat insulation, sound insulation, moisture and fire resistance, shock resistance, filtration, and adsorption. It can be used as thermal insulation material, sound insulation material, heat exchange material, automobile exhaust gas treatment material, and filter and purification material. In the foundry, construction, industry, environmental protection, and other fields are using it widely.

In the early days, foam ceramics were mainly used in metallurgy, the chemical industry, medicine, electronics, and other fields in terms of heat recovery, filtration and purification, and purification. With the continuous advancement of technology and the increasing number of products, the application field of foam ceramics has gradually expanded to thermal insulation, sound absorption, catalyst carrier sewage separation, etc., and the application field has expanded to building materials, automobile exhaust gas treatment, sewage treatment, etc. The downstream application fields of foamed ceramics continue to expand, the market space continues to expand, and the future development prospects are good.

Sefu’s foam ceramic products have ceramic foam filters. The basic materials of ceramic foam filters are SIC, ZrO2, and Al2O3.

The ceramic foam filter has an excellent filtering effect on molten metal. Using the three-dimensional structure, oxide inclusions and other non-metallic inclusions are effectively removed by blocking capture adsorption. Shafts, cylinders, complex large parts, precision hardware parts, etc. are filtered, and the product quality will get satisfactory results.

zirconia ceramic foam

Zirconia Ceramic Foam Filters

The basic material of zirconia foam ceramic filter is zirconia ZrO2. The heat-resistant temperature of zirconia filter mesh is higher than about 1760 ℃, and it has very high strength and excellent high-temperature impact force. Zirconia ceramic foam filters have a significant filtering effect on all steel grades, including carbon steel, stainless steel, cobalt-based nickel-based superalloys, etc.

Cast steel parts require high strength and elongation requirements. Steel castings are therefore very sensitive to defects caused by impurities. The excellent characteristics of zirconia foam ceramic filters can effectively remove impurities that cause product quality defects. The impurities are mainly composed of non-metallic particles, slag, and refractory fragments. Zirconia ceramic foam filters can improve the surface quality and mechanical properties of castings and reduce scrap rates.

The zirconia foam ceramic filter can make the molten steel fill the cavity more uniformly, and the molten metal has a high turbulent tendency during pouring. The turbulent flow is converted into a very stable laminar flow through the three-dimensional pore structure of the zirconia foam ceramic filter. Laminar flow can fill the cavity better. Therefore, the impact corrosion of the metal solution to the casting cavity is reduced, and the scrap rate is significantly reduced.

Sefu guarantees stable dimensional tolerances for ceramic foam filters with excellent raw materials and advanced production technology. At the same time meet the requirements of manual modeling and more efficient mechanized production lines. And to ensure that the product quality of the foundry meets the international quality standard requirements.