Mould for an abradable track beneath the inner shroud of an axial-flow turbomachine compressor
US10132180B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2015 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Feb 11, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2230/90
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a mold for injecting a layer of abradable material, such as silicone, inside an inner shroud of an axial-flow turbomachine. The mold comprises a circular wall or tubular wall extending axially and two annular walls extending radially outwardly from the axial ends of the axial wall. Each radial wall of the mold comprises an annular hook in contact with the outer surface of the shroud so as to hold the mold against the shroud. The injection pressure presses the hooks against the shroud, providing a seal. The walls form an annular molding cavity inside the inner shroud in combination with the inner shroud. The invention also relates to a method for molding an abradable layer inside the shroud with the aid of the mold. The latter is deformed by spreading apart the hooks so as to fit over the shroud.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.