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US 10,646,916 B2Granted
Composition and method to form displacements for use in metal casting
AssigneeDestech Corporation
InventorsDavid A. Rohrbacker, Jon Chatwood, William Palmer
Life of this patent
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Abstract
A method to form a displacement includes disposing a powder blend (comprising a plurality of ground ceramic particles and a plurality of ground resin particles) into a mold, densifying the powder blend while in the mold, heating the mold to form a first displacement, impregnating said first displacement with a polymer precursor compound to form a second displacement, and heating the second displacement to form a third displacement.
Claims14
A method for forming a displacement for a metallic casting, the method comprising:
- forming a first displacement by
- disposing a powder blend into a mold, the powder blend comprising a plurality of ground ceramic particles and a plurality of ground resin particles;
- densifying said powder blend while in said mold;
- and
- heating said mold at about 200° C.;
- impregnating said first displacement with a polymer precursor compound to form a second displacement;
- and
- heating said second displacement at about 1000° C. for about 24 hours to form a third displacement.
5 more elements
Dependencies are inferred from the claim text.