JPS54146211A - High and low pressure unified type turbine rotor - Google Patents
High and low pressure unified type turbine rotorInfo
- Publication number
- JPS54146211A JPS54146211A JP5406278A JP5406278A JPS54146211A JP S54146211 A JPS54146211 A JP S54146211A JP 5406278 A JP5406278 A JP 5406278A JP 5406278 A JP5406278 A JP 5406278A JP S54146211 A JPS54146211 A JP S54146211A
- Authority
- JP
- Japan
- Prior art keywords
- low
- temp
- superior
- alloy steel
- turbine rotor
- 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 the title rotor with superior high and low temp. strength and superior low temp. toughness by adding Ta and N to a Ni-Cr-Mo-V low alloy steel followed by specified heat treatment and working.
CONSTITUTION: A low alloy steel contg. C; 0.05W0.30%, Si<0.2%, Mn; 0.3W 1.5%, Cr; 9W13%, Mo; 0.5W2.0%, V; 0.1W0.5%, Ni; 1W2.5%, Ta; 0.01W1.0% and N; 0.01W0.1%. A low alloy steel of the above compsn. is refined, vacuum deoxidized with carbon, and cast. The casting is forged at 1100W1300°C, uniformly heated at 950W 1100°C, cooled to about 100°C in oil or with water sprayed, and held at the temp. for several tens hr to homogenize the casting. It is finally heated to 550W700°C to carry out tempering. A martensite structure contg. Ta carbonitride finely dispersed is obtd. as the final structure, giving a turbine rotor with superior high and low temp. strength and superior low temp. toughness.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5406278A JPS54146211A (en) | 1978-05-09 | 1978-05-09 | High and low pressure unified type turbine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5406278A JPS54146211A (en) | 1978-05-09 | 1978-05-09 | High and low pressure unified type turbine rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54146211A true JPS54146211A (en) | 1979-11-15 |
Family
ID=12960120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5406278A Pending JPS54146211A (en) | 1978-05-09 | 1978-05-09 | High and low pressure unified type turbine rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54146211A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4404041A (en) * | 1981-11-02 | 1983-09-13 | Hitachi, Ltd. | Method of producing elongated large-size forged article |
| EP0237170A2 (en) * | 1986-02-05 | 1987-09-16 | Hitachi, Ltd. | Heat resistant steel and gas turbine composed of the same |
| WO1988005086A1 (en) * | 1987-01-09 | 1988-07-14 | Hitachi, Ltd. | Heat-resistant steel and gas turbine made of the same |
-
1978
- 1978-05-09 JP JP5406278A patent/JPS54146211A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4404041A (en) * | 1981-11-02 | 1983-09-13 | Hitachi, Ltd. | Method of producing elongated large-size forged article |
| EP0237170A2 (en) * | 1986-02-05 | 1987-09-16 | Hitachi, Ltd. | Heat resistant steel and gas turbine composed of the same |
| WO1988005086A1 (en) * | 1987-01-09 | 1988-07-14 | Hitachi, Ltd. | Heat-resistant steel and gas turbine made of the same |
| CN1036666C (en) * | 1987-01-09 | 1997-12-10 | 株式会社日立制作所 | Heat-resisting steel and combustion turbine made of it |
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