JPS5779149A - Steam turbine rotor for geothermal generation of electric power and its manufacture - Google Patents
Steam turbine rotor for geothermal generation of electric power and its manufactureInfo
- Publication number
- JPS5779149A JPS5779149A JP15529680A JP15529680A JPS5779149A JP S5779149 A JPS5779149 A JP S5779149A JP 15529680 A JP15529680 A JP 15529680A JP 15529680 A JP15529680 A JP 15529680A JP S5779149 A JPS5779149 A JP S5779149A
- Authority
- JP
- Japan
- Prior art keywords
- turbine rotor
- electric power
- steam turbine
- manufacture
- geothermal
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- 230000007797 corrosion Effects 0.000 abstract 4
- 238000005260 corrosion Methods 0.000 abstract 4
- 229910000640 Fe alloy Inorganic materials 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 229910000734 martensite Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000005496 tempering Methods 0.000 abstract 1
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
PURPOSE: To obtain a turbine rotor with superior corrosion resistance, corrosion fatigue strength, notch toughness, etc. in geothermal environment by forming an Fe alloy having restricted composition into a turbine rotor, followed by austenizing, hardening and tempering.
CONSTITUTION: An Fe alloy consisting of, by wt., 0.05W0.25% C, 0.01W0.3% Si, 0.01W1.0% Mn, 10.0W14.0% Cr, 0.3W2.0% Mo, 0.1W0.5 V and the balance Fe with accompanying impurities or further contg. 0.01W0.1% N is formed into the shape of a turbine rotor. This mateial is austenized at 930W1,100°C and hardened at ≥100°C/ hr cooling rate. It is then tempered at 550W700°C to produce a martensite structure. Thus, a steam turbine rotor for the geothermal generation of electric power with superior mechanical properties and characteristics such as superior corrosion resistance and corrosion fatigue strength is obtd.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15529680A JPS5779149A (en) | 1980-11-05 | 1980-11-05 | Steam turbine rotor for geothermal generation of electric power and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15529680A JPS5779149A (en) | 1980-11-05 | 1980-11-05 | Steam turbine rotor for geothermal generation of electric power and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5779149A true JPS5779149A (en) | 1982-05-18 |
Family
ID=15602787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15529680A Pending JPS5779149A (en) | 1980-11-05 | 1980-11-05 | Steam turbine rotor for geothermal generation of electric power and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5779149A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59110723A (en) * | 1982-12-16 | 1984-06-26 | Toshiba Corp | Preparation of 12% cr type cast steel product |
-
1980
- 1980-11-05 JP JP15529680A patent/JPS5779149A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59110723A (en) * | 1982-12-16 | 1984-06-26 | Toshiba Corp | Preparation of 12% cr type cast steel product |
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