JPS5477806A - Turbine blade - Google Patents
Turbine bladeInfo
- Publication number
- JPS5477806A JPS5477806A JP14386677A JP14386677A JPS5477806A JP S5477806 A JPS5477806 A JP S5477806A JP 14386677 A JP14386677 A JP 14386677A JP 14386677 A JP14386677 A JP 14386677A JP S5477806 A JPS5477806 A JP S5477806A
- Authority
- JP
- Japan
- Prior art keywords
- turbine blade
- blade
- laser beam
- steam
- layer
- 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 provide a turbine blade free from stress corrosion cracking by forming a hardened layer as corrosion-proof layer against steam on a steam inlet side tip portion of the turbine blade through irradiation of this portion with a laser beam or the like.
CONSTITUTION: A blade 3 of a rotating turbine blade 1 secured by a blade stem portion 2 to a rotor and is irradiated at its tip portion 5 on the steam inlet side 4 with a laser beam 12 or the like to fuse a surface layer, followed by sudden cooling to form a hardened layer 11 as corrosion-proof layer with respect to steam. In this way, it is possible to dispense with the correction of deformation of the turbine blade 1, so that the number of steps of manufacture can be reduced. In addition, since no residual stress accompanying correction of deformation is produced, the turbine blade is free from stress corrosion cracking during turbine operation. In this case, it is possible to form the hardened layer 11 by adding carbon powder or chromium powder in the fused region, and also an electron beam may be used instead of the laser beam.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14386677A JPS5477806A (en) | 1977-12-02 | 1977-12-02 | Turbine blade |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14386677A JPS5477806A (en) | 1977-12-02 | 1977-12-02 | Turbine blade |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5477806A true JPS5477806A (en) | 1979-06-21 |
Family
ID=15348802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14386677A Pending JPS5477806A (en) | 1977-12-02 | 1977-12-02 | Turbine blade |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5477806A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58197403A (en) * | 1982-05-13 | 1983-11-17 | Toshiba Corp | Turbine blade and method of manufacturing thereof |
WO2006094935A1 (en) * | 2005-03-05 | 2006-09-14 | Alstom Technology Ltd | Turbine blades and methods for depositing an erosion resistant coating on the same |
EP2267278A2 (en) | 2009-06-25 | 2010-12-29 | Hitachi, Ltd. | Turbine rotor blade with hardened region |
JP2017222912A (en) * | 2016-06-16 | 2017-12-21 | 富士電機株式会社 | Manufacturing method of steam turbine blade |
-
1977
- 1977-12-02 JP JP14386677A patent/JPS5477806A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58197403A (en) * | 1982-05-13 | 1983-11-17 | Toshiba Corp | Turbine blade and method of manufacturing thereof |
JPH0424525B2 (en) * | 1982-05-13 | 1992-04-27 | Tokyo Shibaura Electric Co | |
WO2006094935A1 (en) * | 2005-03-05 | 2006-09-14 | Alstom Technology Ltd | Turbine blades and methods for depositing an erosion resistant coating on the same |
EP2267278A2 (en) | 2009-06-25 | 2010-12-29 | Hitachi, Ltd. | Turbine rotor blade with hardened region |
CN101936190A (en) * | 2009-06-25 | 2011-01-05 | 株式会社日立制作所 | Turbine moving blade |
US8632313B2 (en) | 2009-06-25 | 2014-01-21 | Hitachi, Ltd. | Turbine rotor blade |
JP2017222912A (en) * | 2016-06-16 | 2017-12-21 | 富士電機株式会社 | Manufacturing method of steam turbine blade |
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