| 摘要 |
A method of manufacturing an impeller, comprising machining hub, shroud and core portions, such that contacting surfaces between the hub and core, and shroud and core form mating surfaces, for mating and alignment with each other. Material is removed from the core without disturbing the contour of its surfaces, resulting in one or more vanes which mate with the respective hub and shroud portions. The mating portions are then coupled together.
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