| 摘要 |
In a manufacturing method for closed impellers comprising vanes (2, 2a) with vane channels (3) disposed therebetween, said vane channels having a predefined shape, machined openings for the vane channels are made in a blank using a programmably controlled machining device. In the manufacturing method, electrodes (11) of a device for electric discharge machining or for electrochemical stripping are introduced into the openings in another work step and a portion of the predetermined shape of the vane channels (3) is produced through electric discharge machining or through electrochemical stripping. |
