Method for masking cooling holes and device for using in a masking process for masking cooling holes
US8021719B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2009 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Feb 19, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2230/90
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of masking cooling holes of a turbine component, in particular a turbine blade or vane, for a coating process is provided. The component includes an external surface to be coated, at least one internal cavity having an opening towards the outside of the component, and cooling holes extending from the at least one internal cavity to the external surface. The method comprises the steps of: filling the cooling holes with a masking material and hardening the masking material. The masking material, water, is used to fill in the cooling holes. The hardening is done by freezing the water to water ice. A method of coating an external surface of a turbine component and a device for use in a masking process for masking cooling holes in a turbine component are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.