Method for assembling end to end two parts having different thermal expansion coefficients and assembly thus obtained
US8205453B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 3, 2008 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Jan 9, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49947
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In order to assemble together two parts (154, 162) of materials having different coefficients of expansion via mutually engaged edge portions (154a, 162a), tongues (170) are formed in the thinned edge of one of the parts, the tongues being separated by slots (172) obtained by cutting or machining the material of the part, and the parts are assembled together by fastening (174) via the tongues. The edge portions are mutually engaged in such a manner as to be in substantially leaktight contact at the high temperatures encountered in operation. The method is applicable in particular to assembling together parts made respectively of metal and of ceramic composite material, in particular in an aviation gas turbine, for example, upstream and downstream secondary nozzles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.