Method for manufacturing cast ceramic cores for turbomachine blades
US7458411B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2005 |
| Grant date | Dec 2, 2008 |
| Priority date | — |
| Expiry date | Nov 25, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23C2210/0485
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of manufacturing a cast core with at least one recess, corresponding to a partition of a turbomachine blade, includes the steps of shaping, in a mold, a mixture containing a ceramic particles filler and an organic binder; forming a core rough casting without the recess in the mold; extracting the core rough casting from the mold; machining the recess in the core rough casting thereby forming a machined core with the recess; removing the organic binder from the machined core; and heat treating the machined core to consolidate the machined core. The step of machining the recess is performed before the step of heat treating the machined core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.