Swiss Aluminium Ltd.

Swiss Aluminum Ltd.

Jerry W Brockmeyer

James E Dore

Leonard S Aubrey

Michael A Cummings

Clifford N Soble

An improved ceramic foam filter for use in filtering molten metal prepared from a ceramic slurry containing silicon carbide and a colloidal silica binder. The filter has a solids content of at least 50% silicon carbide and at least 3% of silica.

Ceramic foam filter

Ceramic foam filter and process for preparing same

Apparatus for casting molten metal including a mold for casting molten metal having a base portion, a molten metal inlet located at the base portion, a filter positioned across the molten metal inlet so that all the molten metal must pass therethrough and a well beneath said inlet and beneath said filter.

Apparatus for casting molten metal

Disclosed is a ceramic foam material and process for making same having superior strength and chemical durability properties wherein the impregnated foam impregnated with a phosphate bonded ceramic is fired at an elevated temperature so as to produce a ceramic body substantially free of phosphate and having individual grains of ceramic tightly coalesced to minimize porosity between the grains.

Ceramic foam

A ceramic foam material and process for making same having superior strength and durability properties wherein the impregnated foam impregnated with an alumina hydrate binder is fired at an elevated temperature so as to produce a ceramic body characterized by a solid state, sintered ceramic bond.

A molten metal pouring cup is provided communicating with a transfer means for transferring molten metal from the pouring cup to a casting station. Vent means is provided on the pouring cup at the interface between the pouring cup and the transfer means to permit release of entrapped gas downstream of the pouring cup.

Vented pouring cup for molten metal casting

Process for preparing a ceramic foam

The present invention resides in an improved ceramic foam filter particularly useful for filtering molten metal and also an improved aqueous slurry for use in preparing same.

Ceramic foam filter and aqueous slurry for making same

The present invention resides in an improved ceramic foam filter particulary useful for filtering molten metal. The composition of the ceramic foam material is as follows: 50 to 70% Al.sub.2 O.sub.3 ; 2 to 10% micron sized reactive alumina; 1 to 5% montmorillonite; 1 to 10% ceramic fibers; and from 5 to 25% of a ceramic binder or air setting agent.

A method for integrally bonding a gasket seal to the bevelled peripheral surface of a ceramic foam filter used in the filtration of molten metal.

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Hendersonville, NC, United States of America

Jerry W Brockmeyer