JPS5644722A - Manufacture of rotor shaft - Google Patents
Manufacture of rotor shaftInfo
- Publication number
- JPS5644722A JPS5644722A JP11937379A JP11937379A JPS5644722A JP S5644722 A JPS5644722 A JP S5644722A JP 11937379 A JP11937379 A JP 11937379A JP 11937379 A JP11937379 A JP 11937379A JP S5644722 A JPS5644722 A JP S5644722A
- Authority
- JP
- Japan
- Prior art keywords
- pressure parts
- manufacture
- high pressure
- rotor shaft
- low pressure
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE:To manufacture rationally a rotor shaft, in which high pressure parts and low pressure parts made of the same material are formed in one piece and which satisfy the characteristics required for the lower pressure parts by increasing its toughness, by subjecting Cr-Mo-V steel to specific heat treatment after it is shaped by forging. CONSTITUTION:Cr-Mo-V steel is melted, cast, and is shaped by forging into a shaft blank. Said blank is subjected to the primary hardening, then its high pressure parts are subjected to the secondary hardening at 950-1,000 deg.C temp. and its low pressure parts at Ac1-Ac3 temp. The whole blank is then subjected at least to one run of temperature at 600-750 deg.C temp. This method allows to manufacture a rotor shaft, in which high pressure and low pressure parts are formed in one piece, and which has prescribed hardness at the high pressure parts, and excellent toughness at the low pressure parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11937379A JPS5644722A (en) | 1979-09-19 | 1979-09-19 | Manufacture of rotor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11937379A JPS5644722A (en) | 1979-09-19 | 1979-09-19 | Manufacture of rotor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5644722A true JPS5644722A (en) | 1981-04-24 |
Family
ID=14759895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11937379A Pending JPS5644722A (en) | 1979-09-19 | 1979-09-19 | Manufacture of rotor shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5644722A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5716468A (en) * | 1994-12-26 | 1998-02-10 | The Japan Steel Works, Ltd. | Process for producing high-and low-pressure integral-type turbine rotor |
| EP2848706A1 (en) * | 2013-09-13 | 2015-03-18 | Kabushiki Kaisha Toshiba | Method of manufacturing rotor to be used for steam turbine |
-
1979
- 1979-09-19 JP JP11937379A patent/JPS5644722A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5716468A (en) * | 1994-12-26 | 1998-02-10 | The Japan Steel Works, Ltd. | Process for producing high-and low-pressure integral-type turbine rotor |
| EP2848706A1 (en) * | 2013-09-13 | 2015-03-18 | Kabushiki Kaisha Toshiba | Method of manufacturing rotor to be used for steam turbine |
| CN104451086A (en) * | 2013-09-13 | 2015-03-25 | 株式会社东芝 | Method of manufacturing rotor to be used for steam turbine |
| JP2015078426A (en) * | 2013-09-13 | 2015-04-23 | 株式会社東芝 | Manufacturing method of rotor for steam turbine |
| EP3141620A1 (en) * | 2013-09-13 | 2017-03-15 | Kabushiki Kaisha Toshiba | Method of manufacturing rotor to be used for steam turbine |
| EP3144398A1 (en) * | 2013-09-13 | 2017-03-22 | Kabushiki Kaisha Toshiba | Method of manufacturing rotor to be used for steam turbine |
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