Porous Ceramic Foam Materials Filtering Molten Metals

It is well known that porous ceramic foam materials are particularly useful in filtering molten metals, especially aluminum alloys. The design and production of cast filters have the industry’s best inclusion reduction and flow control characteristics.

The ceramic foam filter can remove the inclusions in the metal flow, reduce turbulence and ensure a quiet, smooth mold filling to minimize the risk of oxidation defects. The best results can be obtained if it is placed as close as possible to the casting.

In fact, molten metal, especially molten aluminum, often contains entrained solids, which are harmful to the final cast metal product. These entrained solids appear as inclusions in the final cast product after the molten metal is solidified, and cause the ductility of the final product to decrease or the smoothness and anodizing properties of the final product are poor. Inclusions may come from several sources. For example, inclusions may originate from a surface oxide film, which is broken and entrained in the molten metal. In addition, inclusions may come from insoluble impurities, such as carbides, borides, etc., or corroded furnace and trough refractories.

Porous Ceramic Foam Materials

Porous Ceramic Foam Materials Molten Metal Filtration

These porous ceramic foam materials are particularly suitable for filtering molten metal for a variety of reasons, including excellent filtration efficiency, low cost, ease of use, and single-use and single-use capabilities. These ceramic foam filters are convenient and inexpensive to prepare and can be used once.

AdTech has a fully automatic production line for ceramic foam filters.

  • High strength, no slag, good thermal shock resistance.
  • High porosity, low filtration resistance, high surface energy, multi-phase adsorption capacity, no pollution to molten aluminum.
  • The molten aluminum has good stability when passing through.
  • Available from 7 inches to 26 inches, and can also be customized according to 10PPI to 60PPI.
  • Three different types of gaskets: fiber paper, fiber cotton and expandable.

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