Patent ID: 9126264
Filing Date: 2015-09-08
Classification: B22C,B22D

Abstract:
1. A method for manufacturing a monolithic hollow body by means of a casting or injection moulding process, the manufacturing method comprising the steps of: producing at least one lost ceramic core that reproduces the shape of at least one internal cavity of the hollow body by forming the “green” ceramic core and successively heating the “green” ceramic core to a firing temperature; introducing the ceramic core inside the first mould which reproduces in negative the external shape of the hollow body; feeding a molten material inside the first mould by means of a casting or injection moulding process; letting the material inside the first mould solidify; and extracting the hollow body from the first mould; and destroying and removing the ceramic core located inside the hollow body; wherein producing the at least one lost ceramic core comprises the further steps of: