Turbine shaft and production of a turbine shaft
AssigneeSiemens Aktiengesellschaft
InventorsWolfgang Janssen, Torsten-Ulf Kern, Heinz Klockner
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Abstract
The invention relates to a turbine shaft for a steam turbine, oriented in an axial direction and comprising a first and a second flow region. According to the invention, a first material is provided in the first flow region of the turbine shaft, and a second flow region is provided in the second flow region thereof, the first material having heat-resistant properties and the second material having cold-resistant properties. The inventive turbine shaft is produced by means of a construction weld seam without any previous buffer layer welding on one of the two materials.
Claims13
1-12. (canceled)
A turbine shaft oriented in an axial direction, comprising:
- a first flow region;
- a second flow region that adjoins the first flow region in an axial direction;
- a first material in the first flow region;
- and
- a second material in the second flow region,
- wherein the first material comprises a heat-resistant steel and the second material comprises a steel which is tough at low temperatures.
A process for producing a turbine shaft, comprising:
- orienting a first material and a second material in an axial direction;
- and
- directly joining the first and second materials to one another by a structural weld.
Dependencies are inferred from the claim text.