Silicon carbide ceramics are resistant to high-temperature impact and chemical corrosion. It can withstand high temperatures of about 1500°C. Therefore, they are suitable for the casting of all copper alloys and cast iron. Ceramic foam filters can significantly improve the quality of cast iron parts, reduce scrap rates, and can also be used in continuous casting and rolling processes, and can be made in all standard sizes and different thicknesses.
There are three basic materials forFoam ceramic filtersilicon carbide, zirconia, and alumina.
The foam ceramic filter has a good filtration effect on copper or molten iron, and adopts a three-dimensional structure to effectively remove oxidation mixtures and other non-metallic mixtures, blocking capture and adsorption. Whether it is gray iron, ductile iron, shafts, cylinder blocks or complex large parts, the quality of the product will be satisfactory after the precision parts are filtered.Foam ceramic filterIt is also suitable for copper, bronze, brass and other copper alloys to reduce the turbulence of copper liquid and rectify and purify molten copper liquid. What is particularly valuable is that the service life of copper castings in high-demand or harsh environments such as offshore ship turbines and chemical parts is significantly extended, and it also has a good effect on copper castings with surface polishing requirements. Foam ceramic filters also play an important role in traditional copper manufacturing, electronic copper manufacturing, and continuous casting and rolling processes. Due to the large proportion of copper and alloys, including zinc alloys, which generate greater thermal shock during the pouring process, the use of silicon carbide foam filters generally has strict size regulations
The basic material forFoam ceramic filteror steel casting is Zirconia Zro2. The heat-resistant temperature of the zirconia filter is about 1700°C, which has high strength and good impact at high temperatures.
Cast steel parts are widely used in areas that require high strength and elongation. As a result, steel castings are very sensitive to defects caused by impurities. The excellent properties of ceramic foam filters can effectively remove impurities that ultimately lead to product quality defects. The impurities are mainly composed of non-metallic particles, slag and refractory fragments, which improve the surface quality and mechanical properties of castings and reduce the scrap rate.Foam ceramic filterIt can make the molten steel fill the cavity more evenly, and the molten metal has a higher turbulence tendency during the pouring process. The three-dimensional pore structure of the ceramic foam filter converts turbulent flow into a very stable laminar flow. Laminar flow fills the cavity better, thereby reducing the impact corrosion of the metal solution on the casting cavity, significantly reducing the scrap rate.