Patent · US Expired

Method for manufacturing turborotors such as gas turbine rotor wheels, and wheel produced thereby

US4323394A · kind A · utility

19Cited by

5References

19Claims

0Family size

Assignee

Motoren- und Turbinen-Union Munchen GmbH · DE

Inventors

Wilhelm Hoffmuller · Munich, DE
Axel Rossmann · Karlsfeld, DE
Franz Schreiber · Tauberbischofsheim, DE

Key dates

Filing date	Aug 6, 1979
Grant date	Apr 6, 1982
Priority date	—
Expiry date	Aug 6, 1999

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49321
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method for manufacturing turborotors such as gas turbine rotor wheels having blades of a ceramic material enables an improved rotor wheel to be produced by forming a blade-to-disk connection by sintering the roots of the blades in place within the rotor disk. According to one embodiment, premanufactured blades are joined to the rotor by sintering the entire rotor disk to the premanufactured blades, while in a second embodiment, premanufactured blades are joined to a premanufactured disk by a sintered connection. To compensate for different thermal expansions between the blade and the sintering material, a ductile material is applied to the blade roots before sintering. This ductile material is applied as a coating made of metallic powders, or as a metal felt.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.