Casting Method
AssigneesIluka Resources Limited, University of Northern Iowa Research Foundation
InventorsJorge MASBATE, Gerard THIEL, Sairam RAVI
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Abstract
A method of casting an article from a molten metal including: admitting molten metal to a mould formed from a foundry sand comprising a blend of silica sand and a zircon aggregate, the zircon aggregate exhibiting a sharp rise in linear thermal expansion coefficient in a temperature band above 1200° C. and up to 1600° C.; and cooling the mould and molten metal to solidify the molten metal and form a cast article, wherein one or more surfaces of the mould, or of a portion of the mould, in contact with the molten metal are uncoated.
Claims18
A method of casting an article from a molten metal including:
- admitting molten metal to a mould formed from a foundry sand comprising a blend of silica sand and a zircon aggregate, the zircon aggregate exhibiting a sharp rise in linear thermal expansion coefficient in a temperature band above 1200° C. and up to 1600° C.;
- and
- cooling the mould and molten metal to solidify the molten metal and form a cast article, wherein one or more surfaces of the mould, or of a portion of the mould, in contact with the molten metal are uncoated.
A method of casting an article from a molten metal including:
- forming a mould for the article from a foundry sand comprising a blend that includes silica sand and a zircon aggregate, the zircon aggregate exhibiting a sharp rise in linear thermal expansion coefficient over a temperature band above 1200° C. and up to 1600° C.;
- admitting molten metal to the mould;
- and
- cooling the mould and molten metal to solidify the molten metal and form a cast article, wherein one or more surfaces of the mould, or of a portion of the mould, that contacts the molten metal are uncoated.
Dependencies are inferred from the claim text.