JPS57114016A - Heat treatment of steam turbine rotor shaft - Google Patents
Heat treatment of steam turbine rotor shaftInfo
- Publication number
- JPS57114016A JPS57114016A JP4981A JP4981A JPS57114016A JP S57114016 A JPS57114016 A JP S57114016A JP 4981 A JP4981 A JP 4981A JP 4981 A JP4981 A JP 4981A JP S57114016 A JPS57114016 A JP S57114016A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- austenite
- room
- quenching
- preset
- 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
Abstract
PURPOSE: To improve detection sensitivity of an ultrasonic flaw detector, strength at room and high temperatures, and toughness at room temperature, by quenching and tempering annealed material after heating it at the preset austenite temperature range and slowly cooled to the preset condition at the preset cooling speed and kept at the constant temperature.
CONSTITUTION: An annealed rotor material is heated at the austenite temperature, less than the AC 1 point and more than the quenching temperature, and is cooled either slowly at the cooling speed less than 50°C-hr or at the constant temperature close to ferrite forming nose from the austenite temperature range. The quenching and tempering are performed. Recrystallization, refining, the release and removal of strain on treated structure of austenite crystal grain are completely and appropriately performed and pearlite structure or pearlite with martensite structure are obtained. This improves the stress at room temperature, the strength at room and high temperatures as well as the detection sensitivity of an ultrasonic flaw detector.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4981A JPS57114016A (en) | 1981-01-05 | 1981-01-05 | Heat treatment of steam turbine rotor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4981A JPS57114016A (en) | 1981-01-05 | 1981-01-05 | Heat treatment of steam turbine rotor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57114016A true JPS57114016A (en) | 1982-07-15 |
Family
ID=11463405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4981A Pending JPS57114016A (en) | 1981-01-05 | 1981-01-05 | Heat treatment of steam turbine rotor shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57114016A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ303949B6 (en) * | 2011-09-30 | 2013-07-10 | Západoceská Univerzita V Plzni | Method of achieving TRIP microstructure in steels by deformation heat |
| US8986778B2 (en) * | 2006-07-06 | 2015-03-24 | Siemens Energy, Inc. | Coating method for non-destructive examination of articles of manufacture |
| CN111118269A (en) * | 2019-12-23 | 2020-05-08 | 北京理工大学 | Method for regulating and controlling microstructure of ultrasonic rolling surface layer |
-
1981
- 1981-01-05 JP JP4981A patent/JPS57114016A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8986778B2 (en) * | 2006-07-06 | 2015-03-24 | Siemens Energy, Inc. | Coating method for non-destructive examination of articles of manufacture |
| CZ303949B6 (en) * | 2011-09-30 | 2013-07-10 | Západoceská Univerzita V Plzni | Method of achieving TRIP microstructure in steels by deformation heat |
| US8940111B2 (en) | 2011-09-30 | 2015-01-27 | Západo{hacek over (c)}eská Univerzita V Plzni | Method of achieving trip microstructure in steels by means of deformation heat |
| CN111118269A (en) * | 2019-12-23 | 2020-05-08 | 北京理工大学 | Method for regulating and controlling microstructure of ultrasonic rolling surface layer |
| CN111118269B (en) * | 2019-12-23 | 2022-01-14 | 北京理工大学 | Method for regulating and controlling microstructure of ultrasonic rolling surface layer |
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