Method for manufacturing a turbomachine component
AssigneeNuovo Pignone Tecnologie Srl
InventorsMassimo Giannozzi, Iacopo Giovannetti, Gabriele Masi
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Abstract
A method for manufacturing a turbomachine component is disclosed, including the steps of producing, by additive manufacturing, a plurality of separate segments of the turbomachine component, having a skin surrounding an empty volume corresponding to a massive part of the turbomachine component; assembling the separate segments of the turbomachine component together forming a semi-finished component, with an empty cavity therein; filling cavity of the semi-finished component with a bulk flowable material; and densifying and solidifying the bulk flowable material in the cavity.
Claims4
A turbomachine impeller comprising:
- a disc;
- a hub defining a central aperture and a first cavity;
- and a shroud forming an impeller eye and defining a second cavity;
- the hub, disc, and shroud collectively formed by a plurality of individual impeller members adjacently adjoined together and defining a respective interface between adjoining members, each individual impeller member comprising a respective disc portion forming part of the disc, a respective hub portion forming part of the hub, a respective shroud portion forming part of the shroud, and a respective blade portion extending from a front portion of the disc portion to the shroud portion, wherein the hub portion of each individual impeller member defines a respective cavity forming a segment of the first cavity and the shroud portion of each individual impeller member defines a respective cavity forming a segment of the second cavity;
- and the first cavity and the second cavity are each completely surrounded by a non-removable skin formed from a first metal powder material, and the first cavity and the second cavity are filled with a second metal powder material, the first metal powder material and the second metal powder material have different chemical compositions.
Dependencies are inferred from the claim text.