Forming cooling aperture(s) using electrical discharge machining
US11673200B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 2021 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Aug 13, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23R2900/03042
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A manufacturing method is provided. During this method, a preform component is provided for a turbine engine. The preform component includes a substrate comprising electrically conductive material having an outer coating comprising non-electrically conductive material applied over a surface of the substrate. A preform aperture is formed in the preform component using an electrical discharge machining electrode. The preform aperture includes a meter section of a cooling aperture in the substrate. The preform aperture also includes a pilot hole in the outer coating. A diffuser section of the cooling aperture is formed in at least the outer coating using a second machining process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.