Method for manufacturing an impeller
AssigneeCryostar SAS
InventorAnny MURAD-BICKARD
Life of this patent
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Abstract
A method for manufacturing an impeller, in particular, for a turbomachine, said impeller comprising vanes forming channels in the impeller, the method comprising the following steps: a) forming a raw impeller part by means of additive manufacturing; b) removing), from the raw impeller part, at an inner surface of at least one channel, material in a first area and in a second area of the inner surface, by means of post-processing, to obtain an intermediate impeller part; and c) removing, from the intermediate impeller part in the first area, material by means of machining.
Claims10
A method for manufacturing a closed impeller, for a radial turbomachine, said impeller comprising vanes forming channels in the impeller, the method comprising the following steps:
- a) forming a raw impeller part by means of additive manufacturing;
- b) removing, from said raw impeller part, at an inner surface of at least one channel, material in a first area and in a second area of said inner surface, by means of post-processing, to obtain an intermediate impeller part;
- wherein the post-processing comprises at least one of the following techniques:
- chemical surface treatment, physical surface treatment, mechanical surface treatment, electrical surface treatment;
- and, c) removing, from said intermediate impeller part in said first area, material by means of machining, wherein the second area is only treated with step b).
Dependencies are inferred from the claim text.