Casting of molten metals
AssigneeFoseco International Limited
InventorPierre Roger Potier
Life of this patent
Estimating the term…
Abstract
The surface quality of bottom poured ingots can be improved by placing on the mould floor, prior to pouring, a bonded composition of one or more fluxing agents and expandable graphite.
Claims7
In the process of ingot casting wherein molten metal is bottom poured into an ingot mould to form an ingot, the improvement which comprises locating in the ingot mould, prior to the commencement of pouring, a bonded composition comprising at least one fluxing agent and expandable graphite, said composition being borne up on the rising molten metal surface as the molten metal is poured and disintegrating because of the heat of said metal and the expansion of the graphite and thereafter fusing to form a fluxing cover on the surface of the molten metal thereby minimizing surface oxidation and surface inclusions.
Dependencies are inferred from the claim text.