Turbo-machine impeller manufacturing
AssigneeNuovo Pignone S.p.A.
InventorsPierluigi Tozzi, Iacopo Giovannetti, Andrea Massini
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Abstract
A method of manufacturing a turbo-machine impeller, which includes a hub and a plurality of blades, using powder material in an additive-manufacturing process. The method includes: applying energy to the powder material by way of a high energy source, and solidifying the powder material. At least one bulky portion of the hub is irradiated such that the powder material solidifies in a lattice structure surrounded by an outer solid skin structure enclosing the lattice structure.
Claims14
A method of manufacturing a turbo-machine impeller comprising a hub defining an impeller foot, a shroud and a plurality of blades using powder material in an additive-manufacturing process, the method comprising:
- irradiating the powder material with a high energy source;
- and
- solidifying the powder material to form the turbo-machine impeller,
- wherein the powder material is irradiated such that the impeller foot and an inner portion of the shroud solidify, respectively, in a lattice structure surrounded by an outer solid skin structure enclosing the lattice structure.
A method of manufacturing a turbo-machine impeller comprising a hub defining an impeller foot, a shroud defining an impeller eye, and a plurality of blades using powder material in an additive-manufacturing process, the method comprising:
- irradiating the powder material with a high energy source;
- and
- solidifying the powder material to form the turbo-machine impeller,
- wherein the powder material is irradiated such that the impeller foot and the impeller eye solidify, respectively, in a lattice structure surrounded by an outer solid skin structure enclosing the lattice structure.
Dependencies are inferred from the claim text.