Apparatus for radiantly heating blade tips
US4818833A · kind A · utility
13Cited by
28References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Dec 21, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/0025
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An abrasive, wear resistant layer is applied to the tip surface of a superalloy gas turbine blade by high temperature sintering operation which produces a high strength bond between the layer and the blade, minimizes gamma prime phase growth, and prevents recrystallization in the blade. Important features of the invention include the use of an inductively heated graphite susceptor to heat the blade, and a refractory metal shield which surrounds the airfoil and root portions of the blade while leaving the tip portion exposed to the heat source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.