Aluminum oxide ceramics is a ceramic material with alumina (Al2O3) as the main body, used for thick film integrated circuits. Alumina ceramics have good conductivity, mechanical strength and high temperature resistance. It should be noted that ultrasonic cleaning is required. Aluminum Oxide Ceramic is a kind of ceramics with a wide range of uses. Because of its superior properties, it has become more and more widely used in modern society to meet the needs of daily use and special properties. In terms of functional ceramics, its excellent high temperature resistance is used as a refractory material.
The Aluminum Oxide Ceramic material used for molten metal filtration has a very high melting point and will not melt during casting, nor will it decompose into the gold liquid. Alumina foam ceramic filters generally use polyurethane foam plastic as a carrier, filled with ceramic slurry made of refractory aggregate binders, binders and other micropowders and water, and then extrude the slurry, leaving the package The ceramic material around the foam fiber is dried, fired and sintered at a high temperature, and the polyurethane is decomposed by heat, leaving a foamy ceramic product, that is, a foam ceramic filter.
Alumina ceramic foam filter is mainly used in the purification process of aluminum and aluminum alloy production. It can effectively remove all kinds of inclusions in the aluminum water with a fineness of micrometers, so that the aluminum water becomes a smooth laminar flow, which is conducive to punching; it has excellent aluminum water erosion resistance, strictly controlled hole size and through-hole rate. A stable filtering effect can be obtained; thereby improving casting quality, reducing casting reject rate, prolonging service life, and reducing casting costs.
Large-size alumina foam ceramic sheets (filter plates) are widely used in aluminum casting workshops such as aluminum alloy casting rods, slabs, aluminum foils, aluminum can materials and aluminum profiles.
Alumina ceramic foam filter, suitable for the temperature of 1000 ° ℃, suitable for the filtration and purification of aluminum and alloy solutions. In order to meet the increasingly high quality requirements of aluminum castings, it is more and more important to use oxidized ceramic foam filters.
Filters are also widely used in sand casting and fixed mold casting such as automobile aluminum parts casting. The use of the filtration process is mainly based on the following considerations. On the one hand, the filtration makes the flow of the aluminum liquid orderly and relatively calm, and on the other hand, the solid slag in the gold liquid is effectively removed. The quality of castings is rapidly improving.
The aluminium oxide ceramic foam filter product effectively removes the solid inclusions in the molten metal, so the aluminum alloy can be successfully forged, aluminum foil manufacturing, extrusion processing and other processes to obtain aluminum products. The product has a selection range of 20ppPPI to 60ppPPI, so there will always be a product standard that suits your requirements.