Ceramic filter and method of filtrating molten metal using the same
AssigneeBridgestone Corporation
InventorsEigo Tanuma, Takashi Tokugawa
Life of this patent
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Abstract
A ceramic filter arranged in a flow passage through which a molten metal is poured from a gate into a cavity of a casting mold. The ceramic filter has a ceramic main body of a three-dimensional reticulated skeleton structure having interconnected pores. The main body is formed into a cylindrical shape having an inner hollow portion. A method of making the ceramic main body is disclosed by applying a ceramic slurry on a reticulated synthetic resin foam having no cell membranes. The foam is sintered and applied with the ceramic slurry until the foam is removed by carbonization.
Claims9
A ceramic filter to be arranged in a flow passage through which a molten metal is poured from a gate into a cavity of a casting molding, said ceramic filter comprising:
- a ceramic main body of a three-dimensional reticulated skeleton structure having interconnected pores;
- said ceramic body formed into a shape having an inner hollow portion, wherein said ceramic main body has a bulk specific gravity within a range from 0.3 to 0.8;
- the number of pores within a range from 3 to 40 per 2.5 cm in length along astraight line;
- and a porosity within a range of 75 to 85%.
Dependencies are inferred from the claim text.