Turbine rotor fabrication by thermal methods
US4186473A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1978 |
| Grant date | Feb 5, 1980 |
| Priority date | — |
| Expiry date | Aug 14, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4932
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of fabricating a hybrid dual property wheel assembly includes the steps of preforming a bladed ring of a highly solidified alloy material including a base with a large diameter central opening therethrough and thereafter supporting a metal disc therein to form front and rear joint lines on either side of the juncture between the bladed ring and the disc. The method further contemplates direction of radio frequency energy to the disc to cause it to thermally expand into radially pressed contact with the inside diameter of the bladed ring at an interface therebetween while maintaining the disc and bladed ring under a continuous vacuum atmosphere and heated by the radio frequency energy for maintenance of a diffusion bond temperature between the expanded disc and the surrounding bladed ring of the wheel assembly to form a metallurgical connection therebetween by metal growth across the interface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.