Title:
タービン軸
Document Type and Number:
Japanese Patent JP3939758
Kind Code:
B2
Abstract:
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 R1 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° C. and the second region includes a second base material for use at a temperature below 550° 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.
Inventors:
Cologne, Torsten-Wolf
Ewald, Jurgen
Ewald, Jurgen
Application Number:
JP53050597A
Publication Date:
July 04, 2007
Filing Date:
February 19, 1997
Export Citation:
Assignee:
Siemens Aktiengesellschaft
International Classes:
F01D5/02; B32B15/01; C22C38/40; F01D5/28
Domestic Patent References:
| JP6155001A | ||||
| JP5113106A | ||||
| JP7034202A | ||||
| JP58197232A |
Attorney, Agent or Firm:
Iwao Yamaguchi