JPS5558330A - Heat treating method of steam turbine rotor shaft - Google Patents
Heat treating method of steam turbine rotor shaftInfo
- Publication number
- JPS5558330A JPS5558330A JP12859978A JP12859978A JPS5558330A JP S5558330 A JPS5558330 A JP S5558330A JP 12859978 A JP12859978 A JP 12859978A JP 12859978 A JP12859978 A JP 12859978A JP S5558330 A JPS5558330 A JP S5558330A
- Authority
- JP
- Japan
- Prior art keywords
- rotor shaft
- hardening
- turbine rotor
- under
- steam turbine
- 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
- 238000000034 method Methods 0.000 title abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 229910052804 chromium Inorganic materials 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 238000000137 annealing Methods 0.000 abstract 1
- 229910001566 austenite Inorganic materials 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910000734 martensite Inorganic materials 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 238000005496 tempering Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
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
- C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
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 impart strength being superior at high and room temperatures and toughness being superior even at room temperature respectively to the turbine rotor shaft blank constituted by 12% Cr base steel by subjecting the same to heat treatment and tempering in the respectively specific temperature ranges. CONSTITUTION:The steam turbine rotor shaft blank constituted by so-called 12% Cr base steel containing 10-12% of Cr is heated at 950-1030 deg.C, particularly 980-1010 deg.C to be made to substantially austenite structure, after which it is hardened. It is made substantially to martensite structure by this hardening, after which it is subjected to annealing at 530-700 deg.C. Here, the hardening is accomplished by ordinary hardening methods such as oil hardening, water spray hardening, etc. The rotor shaft blank is desirably the alloy composed of C; 0.1-0.3%, Si; 0.6% or under, Cr; 9-13%, Mo; 0.5-2.0%, V; 0.1-0.3%, Ni; 2.5% or under, one or more of Kb or Ta; 0.03-0.2%, N; 0.1% or under and the rest Fe in weight ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12859978A JPS5558330A (en) | 1978-10-20 | 1978-10-20 | Heat treating method of steam turbine rotor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12859978A JPS5558330A (en) | 1978-10-20 | 1978-10-20 | Heat treating method of steam turbine rotor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5558330A true JPS5558330A (en) | 1980-05-01 |
Family
ID=14988748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12859978A Pending JPS5558330A (en) | 1978-10-20 | 1978-10-20 | Heat treating method of steam turbine rotor shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5558330A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56166327A (en) * | 1980-05-28 | 1981-12-21 | Hitachi Ltd | Manufacture of rotor shaft |
| JPS59179719A (en) * | 1983-03-31 | 1984-10-12 | Toshiba Corp | Manufacture of turbine rotor |
| DE102018217304A1 (en) * | 2018-10-10 | 2020-04-16 | Siemens Aktiengesellschaft | Heat treatment for a NiCrMoV steel and martensitic steel |
-
1978
- 1978-10-20 JP JP12859978A patent/JPS5558330A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56166327A (en) * | 1980-05-28 | 1981-12-21 | Hitachi Ltd | Manufacture of rotor shaft |
| JPS59179719A (en) * | 1983-03-31 | 1984-10-12 | Toshiba Corp | Manufacture of turbine rotor |
| DE102018217304A1 (en) * | 2018-10-10 | 2020-04-16 | Siemens Aktiengesellschaft | Heat treatment for a NiCrMoV steel and martensitic steel |
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