Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Stefan Brussk

Torsten-Ulf Kern

Birgit Grüger

Shilun Sheng

Jörn Bettentrup

Alexander Luithle

Michael Kretschmer

Jörg Schürhoff

Karsten Niepold

Claus Wilhelm

Bora Kocdemir

Tim Schreiber

Tino Uravic

Frank TRUCKENMÜLLER

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.

Rotor shaft and method for producing a rotor shaft

A method for producing a part from ductile iron, including the steps of designing the part in such a way that the part is composed of a plurality of part components, producing the part components from ductile iron, providing the part components in pairs, depositing buffer material onto the rim edge of the first part component and onto the rim edge of the second part component by means of deposition welding, laying the second part component with the rim section thereof on the rim section of the first part component so that the rim edges lie against each other with the buffer materials thereof, and welding the rim sections, wherein the buffer material is selected in such a way that a structure change in the ductile iron material of the part components is prevented when the rim sections are welded.

Method for the welding production of a large-dimensioned part from ductile iron by using laser-deposition-welded buffer materials and electric welding

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Mülheim an der Ruhr, Germany

Stefan Brussk