Investment casting process for hollow components
US9272324B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 7, 2010 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | Jul 2, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/24
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An investment casting process for a hollow component such as a gas turbine blade utilizing a ceramic core (10) that is cast in a flexible mold (24) using a low pressure, vibration assisted casting process. The flexible mold is cast from a master tool (14) machined from soft metal using a relatively low precision machining process, with relatively higher precision surfaces being defined by a precision formed insert (22) incorporated into the master tool. A plurality of identical flexible molds may be formed from a single master tool in order to permit the production of ceramic cores at a desired rate with a desired degree of part-to-part precision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.