Component for a high-temperature steam turbine , and temperature steam turbine
Abstract
A component for a high-temperature steam turbine which operates at temperatures above 600° C., especially above 700° C., is formed of a nickel-based alloy. The negative influence of oxidation of the component which is induced by the superheated steam is prevented by the alloy which is used, having the following composition (in % by weight): C: ≦0.2 Si: ≦1.0 Mn: ≦1.0 Cr: 22.0-25.0 Co: 15.0-25.0 Mo: ≦3.0 Nb: ≦2.0 Al: 1.0-3.0 Ti: 2.0-4.0 Fe: ≦2.0 Zr: ≦0.2 B: ≦0.05 Ni: remainder.
Claims
exact text as granted — not AI-modified1 . A component for a high-temperature steam turbine which operates at temperatures above 600° C., wherein the component consists of a nickel-based alloy having the following composition (in % by weight):
C:
≦0.2
Si:
≦1.0
Mn:
≦1.0
Cr:
22.0-25.0
Co:
15.0-25.0
Mo:
≦3.0
Nb:
≦2.0
Al:
1.0-3.0
Ti:
2.0-4.0
Fe:
≦2.0
Zr:
≦0.2
B:
≦0.05
Ni:
remainder.
2 . The component as claimed in claim 1 , wherein Cr is between 23.0% and 25.0% by weight.
3 . The component as claimed in claim 1 , wherein the component is a blade of the high-temperature steam turbine.
4 . A high-temperature steam turbine for operation at temperatures above 600° C., wherein the high-temperature steam turbine comprises a component which is exposed to superheated steam during operation of the turbine, wherein the component consists of a nickel-based alloy having the following composition (in % by weight):
C:
≦0.2
Si:
≦1.0
Mn:
≦1.0
Cr:
22.0-25.0
Co:
15.0-25.0
Mo:
≦3.0
Nb:
≦2.0
Al:
1.0-3.0
Ti:
2.0-4.0
Fe:
≦2.0
Zr:
≦0.2
B:
≦0.05
Ni:
remainder.
5 . The high-temperature steam turbine as claimed in claim 4 , wherein Cr is between 23.0% and 25.0% by weight.
6 . The high-temperature steam turbine as claimed in claim 4 wherein the component is a blade of the high-temperature steam turbine.Cited by (0)
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