JPS57168006A - Method of manufacturing turbine blades - Google Patents
Method of manufacturing turbine bladesInfo
- Publication number
- JPS57168006A JPS57168006A JP5173981A JP5173981A JPS57168006A JP S57168006 A JPS57168006 A JP S57168006A JP 5173981 A JP5173981 A JP 5173981A JP 5173981 A JP5173981 A JP 5173981A JP S57168006 A JPS57168006 A JP S57168006A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- root
- residual stress
- compressive residual
- turbine
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/02—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from one piece
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
PURPOSE:To improve the corrosion-fatigue resistance of a turbine blade, by forming a compressive residual stress layer in the blade root notched part. CONSTITUTION:After an excessive tension load is imposed on the root part 11 of an unused turbine blade 1, it is released to zero, then the compressive residual stress sigmaD is generated at the bottom of a notch 13 at the root part of the blade 1. The excessive pre-tension load should be larger than the maximum centrifugal force induced in the blade during the trial test or service time of the turbine and it produces plastic deformation at the bottom of the notched part 13 of the blade root, provided that no crack occurs. With these contrivances, a thick compressive residual stress layer 15 is formed at the notched part 13 of the blade root, which prevents the turbine blade 1 from lowering its fatigue resistance in the corrosive atmosphere.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5173981A JPS57168006A (en) | 1981-04-08 | 1981-04-08 | Method of manufacturing turbine blades |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5173981A JPS57168006A (en) | 1981-04-08 | 1981-04-08 | Method of manufacturing turbine blades |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57168006A true JPS57168006A (en) | 1982-10-16 |
Family
ID=12895267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5173981A Pending JPS57168006A (en) | 1981-04-08 | 1981-04-08 | Method of manufacturing turbine blades |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57168006A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006087292A1 (en) | 2005-02-15 | 2006-08-24 | Alstom Technology Ltd | Method for prolonging the fatigue life of a blade footing of a turobmachine blade |
CN104972281A (en) * | 2015-07-15 | 2015-10-14 | 江西洪都航空工业集团有限责任公司 | Machining technology of open structure part |
-
1981
- 1981-04-08 JP JP5173981A patent/JPS57168006A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006087292A1 (en) | 2005-02-15 | 2006-08-24 | Alstom Technology Ltd | Method for prolonging the fatigue life of a blade footing of a turobmachine blade |
US7761993B2 (en) | 2005-02-15 | 2010-07-27 | Alstom Technology Ltd | Method for increasing the fatigue life of a blade root of a turbomachine blade |
CN104972281A (en) * | 2015-07-15 | 2015-10-14 | 江西洪都航空工业集团有限责任公司 | Machining technology of open structure part |
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