F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
F04D 29/26 (2006.01) B23P 15/00 (2006.01)
Patent
CA 2536171
Compressor wheel (16) and techniques for manufacturing such a wheel are provided. The wheel may include a hub (21) with a counterbore (36) internally treated to impart residual compressive stresses for enhanced endurance to stress-induced fatigue. The surface treatment allows extending the counterbore relatively closer to a plane (30) of typical maximum stress of the wheel. This design flexibility advantageously allows avoiding or reducing overhang of the compressor wheel, thereby improving rotor dynamics and reducing the axial length of the hub, and the overall foot print of the compressor wheel.
La présente invention a trait à une roue de turbocompresseur (16) et des techniques pour la fabrication d'une telle roue. La roue peut comporter un moyeu (21) avec un lamage (36) à traitement interne pour imprimer des contraintes de compression résiduelles pour une endurance améliorée à la fatigue induite par contrainte. Le traitement de surface permet l'extension du lamage relativement plus proche d'un plan (30) de contrainte maximale typique de la roue. La flexibilité de la construction permet avantageusement d'éviter ou de réduire le porte-à-faux de la roue de compresseur, améliorant ainsi la dynamique de rotor et réduisant la longueur axiale du moyeu, et l'encombrement global de la roue de turbocompresseur.
Furman Anthony Holmes
Loringer Daniel Edward
Swenson Kendall Roger
Company General Electric
Craig Wilson And Company
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