Patent · US Active

Rotor shaft and method for producing a rotor shaft

US11066933B2 · kind B2 · utility

0Cited by

8References

5Claims

0Family size

Assignee

Siemens Energy Global GmbH & Co. KG · DE

Inventors

Stefan Brussk · Wetter (Ruhr), DE
Torsten-Ulf Kern · Wesel, DE
Alexander Luithle · Bochum, DE

Key dates

Filing date	Jul 7, 2017
Grant date	Jul 20, 2021
Priority date	—
Expiry date	Oct 3, 2037

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05D2260/95
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A rotor shaft for a turbine rotor of a turbine, in particular a steam turbine, having a shaft main body made of a first material and at least one ring which is made of a second material and is attached to the shaft main body, wherein the second material has equal or greater strength and/or greater corrosion resistance than the first material, wherein at least one blade slot is formed on the ring, and wherein the ring is materially bonded to the shaft main body by narrow-gap welding.

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