Reaction injection molding inorganics
AssigneesCridge, Inc., Thomas A. Gallo
InventorsPeter D. Cridge, Thomas A. Gallo
Life of this patent
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Abstract
A process creates molded pans by reaction injection molding (RIM) of inorganics. Two or more slips are mixed as they are being fed into a mold and the slips react rapidly with each other to form a mechanically strong part. The slips contain ceramics/metals which chemically react to form a binding phase, or which destabilize, floe, or gel to form the part. The formed part is then removed from the mold and used as is, or heat-treated prior to use. With this forming process, setting times are independent of part size, unlike slip casting or injection molding, and there is no requirement to add or remove heat from the mold to form the part.
Claims15
The method of casting an inorganic part, comprising:
- providing a first stable slip A containing inorganic powder and a first inorganic reaction compound;
- providing a second stable slip B which contains inorganic powder and a second inorganic reaction compound;
- and
- injecting only said first and said second slips into a mold, said slips being mixed together as they enter the mold, and said first and said second inorganic reaction compounds reacting to harden and form a part.
The method of casting an inorganic part, comprising:
- providing a first stable slip A containing inorganic powder and a first inorganic reaction compound;
- providing a second stable slip B which contains inorganic powder and a second inorganic reaction compound;
- injecting only said first slip and said second slip into a mold, said slips being mixed as they enter the mold, said first and said second inorganic reaction compounds reacting to harden and form a part of handleable strength;
- and
- removing the part from the mold directly after completion of a setting reaction without the application of heat or the removal of carrier liquid.
Dependencies are inferred from the claim text.