Alumina Ceramic Foam Filters mainly for filtration of aluminum and alloys in foundries and cast houses. With the excellent resistance to attack and corrosion from molten aluminum, the filter can effectively remove inclusions, reduce trapped gas and provide laminar flow and then the filtered metal is significantly cleaner.
 

Before a filter can be used, it must be completely wetted by liquid metal. This happens during the start-up of the casting operation. The amount of metallostatic pressure (or priming head) required to wet filters depends on alloy,metal temperature, pre-heat uniformity, pre-heat temperature, incoming metal quality,pre-filter treatments and on the cell size of the filter.