CN1300445C - Turbine high temperature blade and its heat treatment process - Google Patents
Turbine high temperature blade and its heat treatment process Download PDFInfo
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- CN1300445C CN1300445C CNB2003101041284A CN200310104128A CN1300445C CN 1300445 C CN1300445 C CN 1300445C CN B2003101041284 A CNB2003101041284 A CN B2003101041284A CN 200310104128 A CN200310104128 A CN 200310104128A CN 1300445 C CN1300445 C CN 1300445C
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- high temperature
- air cooling
- heat treatment
- blade
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000010438 heat treatment Methods 0.000 title claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000010791 quenching Methods 0.000 claims abstract description 13
- 230000000171 quenching effect Effects 0.000 claims abstract description 13
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000000956 alloy Substances 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 abstract 1
- 238000005496 tempering Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910020015 Nb W Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
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Abstract
The present invention provides a high temperature vane for supercritical or ultra supercritical steam turbine sets and the heat treatment process of the high temperature vane. The vane is made of 12% of novel Cr steel (12% of Cr-Mo-W-V-Nb-Co-B-N steel-based alloy materials). The parameters of the heat treatment process are 1000 DEG C to 1180 DEG C *1 to 10 hours of oil cooling or air cooling of quenching treatment, and 600 DEG C to 750DEG C * 2 to 15 hours of air cooling of tempering treatment. Through experiments, the present invention completely meets design requirements and technical requirements for the high temperature endurance and the creep property of the high temperature vane of a supercritical or an ultra supercritical steam turbine set.
Description
Technical field
The present invention relates to a kind of high temperature blade and heat treatment process thereof of overcritical or supercritical turbine unit.
Background technique
The former subcritical materials such as 2Cr12NiMo1W1V refractory steel or 2Cr11Mo1VNbN refractory steel that use with supercritical pressure turbine unit high temperature blade material.Because the steam parameter of steam turbine unit improves, (steam parameter is the subcritical pressure turbine unit: 538 ℃/538 ℃, 17Mpa) the high temperature blade material of Shi Yonging can not satisfy overcritical or the supercritical turbine unit (steam parameter is: 566 ℃/566 ℃, 24Mpa or 600 ℃/600 ℃, 24Mpa) high-temperature and durable of high temperature blade and croop property requirement.
Summary of the invention
Purpose of the present invention is exactly for after the steam parameter raising that solves above-mentioned steam turbine unit, be used for the technical barrier that the high temperature blade of overcritical or supercritical turbine unit can not meet the demands, filter out a kind of new substitution material and make blade, another purpose is the heat treatment process problem that solves this blade.
The objective of the invention is to reach like this: through after the various tests, adopt new 12%Cr steel to make high temperature blade, new 12%Cr steel is a 12%Cr-Mo-W-V-Nb-Co-B-N base steel alloy.Blade process of thermal treatment parameter is: Quenching Treatment is: 1000 ℃-1180 ℃ * 1-10 hour, and oil cooling or air cooling; Temper is: 600 ℃-750 ℃ * 2-15 hour, and air cooling.
Preferred Quenching Treatment is: 1060 ℃-1150 ℃ * 1-5 hour, and oil cooling or air cooling;
Preferred temper is: 650 ℃-720 ℃ * 5-8 hour, and air cooling.
Best Quenching Treatment is: 1120 ℃-1150 ℃ * 2-4 hour, and oil cooling or air cooling;
Best temper is: 680 ℃-700 ℃ * 2-15 hour, and air cooling.
The blade processing step is: the smelting of new 12%Cr steel is: electric furnace+electroslag remelting;
Moulding is adopted: hot rolling or forge hot;
Blade blank: carry out property heat treatment;
Be machined into product again.
Effect of the present invention: owing to adopt the better new 12%Cr steel (12%Cr-Mo-W-V-Nb-Co-B-N base steel alloy) of high-temperature behavior.Through the test reached designing requirement fully, satisfied overcritical or supercritical turbine unit high temperature blade to high-temperature and durable and creep technical requirements.
Embodiment
Embodiment one
Through after the various tests, decision adopts the 12%Cr-Mo-W-V-Nb-Co-B-N base steel alloy of new 12%Cr steel to make high temperature blade, replaces materials such as 2Cr12NiMo1W1V refractory steel or 2Cr11Mo1VNbN refractory steel.It is very important heat-treating technology for the high-temperature behavior of this new blade material.
1. new 12%Cr steel chemical composition and mechanical property requirements:
| C | Si | Mn | P | S | Ni | Cr |
| 0.12-0.17 | ≤0.30 | 0.30～0.60 | ≤0.025 | ≤0.025 | ≤0.40 | 10.50～11.50 |
| Mo | Co | B | V | Nb | W | N |
| 0.60～0.80 | 2.90～3.10 | 0.007～0.015 | 0.15～0.25 | 0.10～0.20 | 1.70～2.00 | 0.03～0.05 |
Cu≤0.03; Al≤0.05; Ti≤0.05; Surplus is Fe
(1) tensile test at room temperature:
σ b σ δ ψ Akv hardness HB
≥965N/mm
2 ≥690N/mm
2 ≥15％ ≥45％ ≥11J 291-331
(2) stress-rupture tester:
Test conditions: 650 ℃ of temperature; Stress 186N/mm
2
Smooth sample: T＞55 hour;
Notched specimen: T breach/T is smooth 〉=and 1
2. process the process step of blade with new 12%Cr steel:
(1) smelting of steel is: electric furnace+electroslag remelting;
(2) moulding is adopted: hot rolling or forge hot.
3. the heat treatment process of blade: Quenching Treatment and temper
(1) Quenching Treatment: 1000 ℃ * 1 hour, oil cooling or air cooling
(2) temper: 600 ℃ * 2 hours, air cooling.
4. blade blank carries out property heat treatment, is machined into product again.
Embodiment two
The Quenching Treatment of blade: 1060 ℃ * 5 hours, oil cooling or air cooling; Temper: 650 ℃ * 5 hours, air cooling.All the other are with embodiment one.
Embodiment three
The Quenching Treatment of blade: 1120 ℃ * 3 hours, oil cooling or air cooling; Temper: 680 ℃ * 10 hours, air cooling.All the other are with embodiment one.
Embodiment four
The Quenching Treatment of blade: 1150 ℃ * 8 hours, oil cooling or air cooling; Temper: 700 ℃ * 12 hours, air cooling.All the other are with embodiment one.
Embodiment five
The Quenching Treatment of blade: 1180 ℃ * 10 hours, oil cooling or air cooling; Temper: 750 ℃ * 15 hours, air cooling.All the other are with embodiment one.
Claims (4)
1. steam turbine high-temperature blade is characterized in that: adopt the 12%Cr steel to make high temperature blade, the 12%Cr steel is a 12%Cr-Mo-W-V-Nb-Co-B-N base steel alloy, its chemical composition, by weight percentage, Mo 0.60-0.80, N 0.03-0.05, C 0.12-0.17, Si≤0.30, Mn 0.30-0.60, P≤0.025, S≤0.025, Ni≤0.40, Cr 10.50-11.50, Co 2.90-3.10, B0.007-0.015, V 0.15-0.25, Nb 0.10-0.20, W 1.70-2.00, Cu≤0.03, Al≤0.05, Ti≤0.05, surplus is Fe.
2. the heat treatment process of a steam turbine high-temperature blade as claimed in claim 1, step is:
(1) Quenching Treatment is: 1000 ℃-1180 ℃ * 1-10 hour, and oil cooling or air cooling,
(2) temper is: 600 ℃-750 ℃ * 2-15 hour, and air cooling.
3. heat treatment process as claimed in claim 2, its Quenching Treatment is: 1060 ℃-1150 ℃ * 1-5 hour, oil cooling or air cooling; Temper is: 650 ℃-720 ℃ * 5-8 hour, and air cooling.
4. heat treatment process as claimed in claim 2, its Quenching Treatment is: 1120 ℃-1150 ℃ * 2-4 hour, oil cooling or air cooling; Temper is: 680 ℃-700 ℃ * 2-15 hour, and air cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101041284A CN1300445C (en) | 2003-12-26 | 2003-12-26 | Turbine high temperature blade and its heat treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101041284A CN1300445C (en) | 2003-12-26 | 2003-12-26 | Turbine high temperature blade and its heat treatment process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1554857A CN1554857A (en) | 2004-12-15 |
| CN1300445C true CN1300445C (en) | 2007-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101041284A Expired - Lifetime CN1300445C (en) | 2003-12-26 | 2003-12-26 | Turbine high temperature blade and its heat treatment process |
Country Status (1)
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629232B (en) * | 2008-07-16 | 2012-05-09 | 上海重型机器厂有限公司 | Heat treatment method for supercritical turbine cylinder steel castings |
| CN102417969B (en) * | 2011-11-23 | 2013-07-17 | 沈阳科金特种材料有限公司 | Heat treatment process for high-hardenability Martensitic stainless steel for moving blades |
| CN102836946B (en) * | 2012-09-11 | 2014-11-05 | 四川豪特石油设备有限公司 | Roll forging forming process for last stage of moving blade of 600MW unit steam turbine |
| CN103937947B (en) * | 2014-04-11 | 2016-01-13 | 上海电气电站设备有限公司 | The heat treating method of Long Turbine Blades material therefor |
| CN104033189B (en) * | 2014-06-27 | 2016-01-27 | 南京赛达机械制造有限公司 | A kind of processing technology of turbine blade |
| CN105239021B (en) * | 2014-07-08 | 2017-07-25 | 南京赛达机械制造有限公司 | A kind of high pressure resistant turbine blade and its production technology |
| CN104120370B (en) * | 2014-07-29 | 2016-01-20 | 包头市泽傲科贸有限公司 | A kind of separator blade |
| CN105695678B (en) * | 2016-04-18 | 2017-11-03 | 东北大学 | The heat treatment method of BN phase morphologies in a kind of control ultra supercritical heat resisting steel |
| CN108031779A (en) * | 2017-11-29 | 2018-05-15 | 无锡透平叶片有限公司 | A kind of turbine blade and preparation method thereof |
| CN109943783B (en) * | 2017-12-20 | 2021-11-19 | 上海电气电站设备有限公司 | High-temperature casting material for steam turbine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5247506A (en) * | 1975-10-13 | 1977-04-15 | Kobe Steel Ltd | Nitrogen-containing powder-sintered high speed steel |
| US4242151A (en) * | 1978-10-25 | 1980-12-30 | Creusot-Loire | Chromizing of steels by gaseous method |
| JPS61295319A (en) * | 1985-06-21 | 1986-12-26 | Sumitomo Metal Ind Ltd | Method for manufacturing suction rod for wet carbon dioxide oil well |
| JPH04198455A (en) * | 1990-11-29 | 1992-07-17 | Hitachi Ltd | Corrosion resisting alloy, hot roll and its production, and hot rolling mill |
| US5972287A (en) * | 1997-06-25 | 1999-10-26 | Mitsubishi Heavy Industries, Ltd. | Heat-resisting steel |
| CN1246579A (en) * | 1998-06-09 | 2000-03-08 | 三菱重工业株式会社 | Deformed material welding rotor of steam turbine |
| CN1294636A (en) * | 1998-03-23 | 2001-05-09 | 尤迪霍尔姆工具公司 | Steel material and method for its mfg. |
-
2003
- 2003-12-26 CN CNB2003101041284A patent/CN1300445C/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5247506A (en) * | 1975-10-13 | 1977-04-15 | Kobe Steel Ltd | Nitrogen-containing powder-sintered high speed steel |
| US4242151A (en) * | 1978-10-25 | 1980-12-30 | Creusot-Loire | Chromizing of steels by gaseous method |
| JPS61295319A (en) * | 1985-06-21 | 1986-12-26 | Sumitomo Metal Ind Ltd | Method for manufacturing suction rod for wet carbon dioxide oil well |
| JPH04198455A (en) * | 1990-11-29 | 1992-07-17 | Hitachi Ltd | Corrosion resisting alloy, hot roll and its production, and hot rolling mill |
| US5972287A (en) * | 1997-06-25 | 1999-10-26 | Mitsubishi Heavy Industries, Ltd. | Heat-resisting steel |
| CN1294636A (en) * | 1998-03-23 | 2001-05-09 | 尤迪霍尔姆工具公司 | Steel material and method for its mfg. |
| CN1246579A (en) * | 1998-06-09 | 2000-03-08 | 三菱重工业株式会社 | Deformed material welding rotor of steam turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1554857A (en) | 2004-12-15 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: DONGFANG ELECTRIC GROUP DONGFANG STEAM TURBINE CO. Free format text: FORMER NAME OR ADDRESS: DONGFAN STEAM TURBINE FACTORY |
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| CP01 | Change in the name or title of a patent holder |
Address after: 618201 Deyang City, Sichuan Province town of Hanwang Patentee after: DONGFANG TURBINE Co.,Ltd. DTC Address before: 618201 Deyang City, Sichuan Province town of Hanwang Patentee before: Dongfang Steam Turbine Plant |
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Granted publication date: 20070214 |
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| CX01 | Expiry of patent term |