JPS57120655A - Moving vane of steam turbine - Google Patents
Moving vane of steam turbineInfo
- Publication number
- JPS57120655A JPS57120655A JP387781A JP387781A JPS57120655A JP S57120655 A JPS57120655 A JP S57120655A JP 387781 A JP387781 A JP 387781A JP 387781 A JP387781 A JP 387781A JP S57120655 A JPS57120655 A JP S57120655A
- Authority
- JP
- Japan
- Prior art keywords
- moving vane
- steel
- steam turbine
- creep strength
- grain boundaries
- 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 obtain the high pressure or medium pressure initial moving vane of a steam turbine with superior creep strength at high temp. by adding a specified amount of W to a 12Cr-Mo-Nb-V steel and using the resulting steel as a material for the moving vane.
CONSTITUTION: A steel consisting of, by wt., 10W13% Cr, 0.15W0.30% C, 0.5W 1.0% Mn, 0.5W2.0% Mo, ≤0.6% Si, 0.2W1.0% Ni, 0.1W0.3% V, 0.3W0.7% Nb, 0.04W0.1% N, 0.5W2.5% W and the balance Fe with accompanying impurities is used as a material for a moving vane. W is required to enhance the creep strength at high temp. by strengethening the solid soln. of the alloy and strengthening the grain boundaries owing to the precipitation of stable carbide on the grain boundaries, yet <0.5% W does not suficiently produce the effect, and >2.5% W facilitates the formation of a ferrite phase and reduces the creep strength and elongation. A moving vane made of this steel has high creep rupture strength at about 600°C.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP387781A JPS57120655A (en) | 1981-01-16 | 1981-01-16 | Moving vane of steam turbine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP387781A JPS57120655A (en) | 1981-01-16 | 1981-01-16 | Moving vane of steam turbine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57120655A true JPS57120655A (en) | 1982-07-27 |
Family
ID=11569406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP387781A Pending JPS57120655A (en) | 1981-01-16 | 1981-01-16 | Moving vane of steam turbine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57120655A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58120764A (en) * | 1982-01-08 | 1983-07-18 | Toshiba Corp | Moving vane of steam turbine with superior strength at high temperature and low creep crack propagating speed |
JPS5989752A (en) * | 1982-11-15 | 1984-05-24 | Hitachi Ltd | Welded structure of 12cr steel |
-
1981
- 1981-01-16 JP JP387781A patent/JPS57120655A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58120764A (en) * | 1982-01-08 | 1983-07-18 | Toshiba Corp | Moving vane of steam turbine with superior strength at high temperature and low creep crack propagating speed |
JPS5989752A (en) * | 1982-11-15 | 1984-05-24 | Hitachi Ltd | Welded structure of 12cr steel |
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