Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Torsten-Ulf Kern

Karsten Kolk

Kai Wieghardt

Armin De Lazzer

Jochen Barnikel

Torsten Neddemeyer

Shilun Sheng

Stefan Brussk

Susanne Gollerthan

Alexander Luithle

Jorg Schurhoff

J&uuml;rgen Ewald

Christian Bohme

Christian Borgmann

Karsten Niepold

Wolfgang Janssen

Heinz Klöckner

Axel Bublitz

Johanna Marie Haan

Thorsten Rudolph

An alloy which includes at least the following (in % by weight): carbon (C): 0.15%-0.25%; silicon (Si): 0.0%-0.08%; manganese (Mn): 0.03%-0.20%; chromium (Cr): 9.5%-10.5%; molybdenum (Mo): 0.4%-1.0%; tungsten (W): 1.6%-2.4%; cobalt (Co): 2.5%-3.5%; nickel (Ni): 0.0%-0.40%; boron (B): 0.003%-0.02%; nitrogen (N): 0.0%-0.40%; titanium (Ti): 0.02%-0.10%; vanadium (V): 0.10%-0.30%; niobium (Nb): 0.02%-0.08%; copper (Cu): 1.20%-2.10%; and aluminum (Al): 0.003%-0.06%, in particular 0.005%-0.04%; the remainder being iron (Fe).

Martensitic steel having a Z-phase, powder and component

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 turbomachine component having a main body and a multilayer coating, which is applied directly to the main body is provided. The multilayer coating is at least 5 &#x3bc;m and at most 35 &#x3bc;m thick and has a plurality of layers applied directly one on top of the other, wherein the layer applied directly to the main body is an adhesion promoting layer, which comprises chromium nitride, and at least one of the remaining layers comprises a hard material.

Turbomachine component having a functional coating

A turbine component is provided, on which a protective layer is arranged, for example to avoid droplet impact erosion, wherein, in a first method step, a nanofilm is applied and a brazing metal is applied to the nanofilm, and the nanofilm chosen is one which, after initial ignition, leads to an exothermic reaction, whereby fusion of the brazing metal with the base material takes place to form a protective layer.

Process for applying a protective layer to a turbine component

Turbo-engine which has a low-pressure area, containing at least one shaft, wherein the low-pressure area has an inflow area, the shaft having, at least on its inflow part arranged in the inflow area, a heat resistant material, wherein the shaft has, on outflow parts arranged opposite the inflow part, a 26NiCrV14-5 and/or 2SNiCrMoVii-5 and/or 22CrNiM09-9 material.

Welded low-pressure turbine shaft

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.

Turbine shaft and production of a turbine shaft

A turbine shaft, in particular for a steam turbine, is oriented along an axis of rotation. The turbine shaft has a first region with a maximum radius R and a second region adjoining the first region and having a maximum radius R2>R1. The first region includes a first base material for use at a temperature of over 550&deg; C. and the second region includes a second base material for use at a temperature below 550&deg; C. An alloy steel used for the first and the second base materials in each case has a chromium content of between 8.0% by weight and 12.5% by weight at a substantially identical austenitizing temperature. A method is provided for producing the turbine shaft.

Turbine shaft and method for producing a turbine shaft

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Wesel, Germany

Torsten-Ulf Kern