Process for manufacturing a hollow blade for a turbo-machine
US5636440A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Aug 30, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49339
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process for manufacturing a hollow turbo-machine blade comprises the steps of: (a) using computer aided design and manufacture (CAD/CAM) means to create, from a definition of the blade to be produced, a digital simulation of the flat form of the primary parts of said blade; (b) die-forging said primary parts in a press observing certain conditions; (c) machining said primary parts; (d) depositing diffusion barriers on at least one of said primary parts according to a predefined pattern; (e) assembling said primary parts, followed by diffusion welding them together under isostatic pressure; (f) inflating the welded assembly and shaping it by superplastic forming; and, (g) final machining; the process possibly also including an additional step of cambering and twisting the primary parts either before or after they are welded together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.