JPS5799208A - 12% cr steel steam turbine rotor - Google Patents
12% cr steel steam turbine rotorInfo
- Publication number
- JPS5799208A JPS5799208A JP17321280A JP17321280A JPS5799208A JP S5799208 A JPS5799208 A JP S5799208A JP 17321280 A JP17321280 A JP 17321280A JP 17321280 A JP17321280 A JP 17321280A JP S5799208 A JPS5799208 A JP S5799208A
- Authority
- JP
- Japan
- Prior art keywords
- coupling
- section
- rotor
- surface layer
- quenching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
PURPOSE: To enhance the breaking strength of a rotor coupling terminal by applying a surface hardening layer on the surface of a coupling section and shrinkage fitting a coupling on the layer to fix it.
CONSTITUTION: After high frequency quenching or nitriding process is applied on the surface layer of a rotor axle terminal, a coupling 3 is shrinkage fitted. Prior to shrinkage fitting, tempering process of a quenching section 2 is more effective. In case of flame quenching, only a surface layer section 2 is heated and cooled rapidly, the same as high frequency quenching. Accordingly, a high compressed residual stress is generated on the surface layer section of the rotor, and also the surface layer section is hardened, thus the strain strength and the fretting characteristic of a rotor coupling terminal 5 are improved and the breaking strength is enhanced.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17321280A JPS5799208A (en) | 1980-12-10 | 1980-12-10 | 12% cr steel steam turbine rotor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17321280A JPS5799208A (en) | 1980-12-10 | 1980-12-10 | 12% cr steel steam turbine rotor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5799208A true JPS5799208A (en) | 1982-06-19 |
Family
ID=15956193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17321280A Pending JPS5799208A (en) | 1980-12-10 | 1980-12-10 | 12% cr steel steam turbine rotor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5799208A (en) |
-
1980
- 1980-12-10 JP JP17321280A patent/JPS5799208A/en active Pending
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