EP2176520A1 - Verfahren zur herstellung einer turbinenkomponente - Google Patents
Verfahren zur herstellung einer turbinenkomponenteInfo
- Publication number
- EP2176520A1 EP2176520A1 EP08786328A EP08786328A EP2176520A1 EP 2176520 A1 EP2176520 A1 EP 2176520A1 EP 08786328 A EP08786328 A EP 08786328A EP 08786328 A EP08786328 A EP 08786328A EP 2176520 A1 EP2176520 A1 EP 2176520A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- turbine
- temperature
- subcomponent
- sub
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 17
- 229910000601 superalloy Inorganic materials 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims abstract description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 18
- 229910052759 nickel Inorganic materials 0.000 claims description 16
- 238000005496 tempering Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 238000000137 annealing Methods 0.000 abstract description 2
- 238000005304 joining Methods 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 229910000669 Chrome steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000013439 planning Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
- F01D5/063—Welded rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/201—Rotors using the Magnus-effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
- F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/40—Heat treatment
Definitions
- the invention relates to a method for producing a turbine component, in particular a turbine shaft or a steam turbine housing. Furthermore, the invention relates to a turbine component, in particular a turbine shaft or a steam turbine housing.
- nickel-base alloys are about three times as expensive as conventional materials.
- a shaft in a monoblock design would indeed be suitable for use in a powered at 700 0 C Steam inlet temperature steam turbine, but the manufacturing, material and processing costs would be relatively high.
- high-temperature steels such. B. 10Gew .-% Cr steel can be used.
- the temperatures at which such steels are used can be about 100 Kelvin below the target steam inlet temperature of 700 0 C.
- the major components such as.
- EP 1 378 629 discloses a steam turbine shaft composed of two materials, one comprising a nickel base alloy and the other consisting of a high strength steel. This turbine shaft is screwed together at its joint by means of an internal screw.
- screw connections always present a certain risk because screw connections can break.
- a further possibility of producing a component from a superalloy and a high-temperature-resistant steel would be to weld the two materials together by means of a weld seam.
- the weld thus combines two subcomponents, one of which is hotter in operation than the second subcomponent and at the same time has a higher thermal expansion coefficient, as is the case with nickel-based alloys.
- the thermal expansion of the two sub-components is very different.
- a rigid cohesive welded joint would thus be exposed to very high thermal stresses.
- the object is achieved by a method for producing a turbine component with the steps:
- the object is further achieved by a turbine component comprising a superalloy-comprising first subcomponent (2) and a second subcomponent (3) welded directly to the first subcomponent (2) and having a high-temperature steel.
- the invention is based on the idea that the weld should be subjected to a special heat treatment after the joint welding and before the mechanical treatment so that it meets the desired requirements.
- the invention is based on the idea that by this heat treatment, thermal stress in the weld completely or partially relax. During the subsequent cooling, an internal stress state arises in the cold component, which the connection can endure.
- the heat treatment reduces the short-term strength of the second subcomponent to a lower value.
- the heat treatment can be done locally, ie only the weld is heated. But it can also be heated up the entire component.
- the first subcomponent is formed from a nickel-based material, in particular a nickel-based superalloy.
- a nickel-based material is suitable for high temperatures and thus optimal for the application area.
- the second subcomponent is formed from a 10% chromium steel.
- the second subcomponent can also be formed from an X12 steel.
- the two aforementioned materials are ideal for use in steam turbine construction and are therefore to be classified as particularly suitable.
- the annealing temperature may be advantageously carried out at 730 0 C.
- the temperature to which the weld is to be heated, as well can be between 80% to 120% of the tempering temperature of 730 ° C.
- the temperature range may also be between 90% and 110% of the tempering temperature of 730 ° C. But you can also choose any interval between 80% and 120%.
- the component comprises a turbine shaft for a steam turbine.
- Turbine shafts are the most thermally stressed components in a steam power plant.
- the component comprises a housing for a steam turbine.
- the housings for steam turbines are particularly thermally stressed.
- the heat treatment of the weld provides a very simple and inexpensive solution to provide a component necessary for increasing the efficiency a steam power plant is used.
- this heat treatment no major conversion measures have to be considered in the manufacturing process.
- FIG. 1 shows a side view of a shaft
- Figure 2 is a side view of an upper part of a housing.
- FIG. 1 shows a side view of a turbine component 1 embodied as a shaft.
- the turbine component 1 comprises a first subcomponent 2 and a second subcomponent 3.
- the first subcomponent 2 can be formed, for example, from a nickel-based superalloy or from a nickel-based material.
- Nickel-based materials are particularly suitable for high temperatures and thus the turbine component 1, if it is designed as a shaft, are acted upon in the arrangement shown in Figure 1 from the left with steam inlet temperatures of about 700 0 C.
- the second subcomponent 3 may be formed of a X12 steel or a 10% chromium steel. These materials are not suitable for high steam inlet temperatures of 700 0 C. By thermodynamic conversion processes, the vapor is cooled in a flow direction 4, whereby the second sub-component 3 is thermally less stressed than the first sub-component. 2
- the first subcomponent 2 is provided, which has a superalloy.
- the second subcomponent 3 is provided from a component having a high temperature steel.
- first subcomponent 2 and the second subcomponent 3 are welded together by means of a weld seam 5 between the first subcomponent 2 and the second subcomponent 3.
- the weld seam 5 is heated to a temperature which corresponds to 70% to 130% of the tempering temperature of the high-temperature steel.
- the weld is heated after welding to a temperature corresponding to 70% to 130% of the tempering temperature of the high temperature steel. Before this heating, the component 1 may be cooled with the weld 5.
- the tempering temperature is 730 ° C.
- Temperature between 80% and 120% of the tempering temperature can be selected.
- the temperature may be between 90% and 110% of the tempering temperature of the high temperature steel.
- the housing includes the first Subcomponent 2 and the second subcomponent 3 and arranged between the first subcomponent 2 and the second subcomponent 3 weld 5.
- the first subcomponent 2 and the second subcomponent 3 includes the material selection as shown in Figure 1 relative to the shaft.
- the first subcomponent 2 comprises a superalloy and the second subcomponent 3 is formed from a high temperature resistant steel.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Arc Welding In General (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08786328.8A EP2176520B1 (de) | 2007-08-08 | 2008-07-22 | Verfahren zur herstellung einer turbinenkomponente und entsprechende turbinenkomponente |
| PL08786328T PL2176520T3 (pl) | 2007-08-08 | 2008-07-22 | Sposób wytwarzania elementu turbiny i odpowiedni element turbiny |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07015626A EP2025866A1 (de) | 2007-08-08 | 2007-08-08 | Verfahren zur Herstellung einer Turbinenkomponente und entsprechende Turbinenkomponente |
| EP08786328.8A EP2176520B1 (de) | 2007-08-08 | 2008-07-22 | Verfahren zur herstellung einer turbinenkomponente und entsprechende turbinenkomponente |
| PCT/EP2008/059592 WO2009019131A1 (de) | 2007-08-08 | 2008-07-22 | Verfahren zur herstellung einer turbinenkomponente |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2176520A1 true EP2176520A1 (de) | 2010-04-21 |
| EP2176520B1 EP2176520B1 (de) | 2016-08-31 |
Family
ID=38942159
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07015626A Withdrawn EP2025866A1 (de) | 2007-08-08 | 2007-08-08 | Verfahren zur Herstellung einer Turbinenkomponente und entsprechende Turbinenkomponente |
| EP08786328.8A Not-in-force EP2176520B1 (de) | 2007-08-08 | 2008-07-22 | Verfahren zur herstellung einer turbinenkomponente und entsprechende turbinenkomponente |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07015626A Withdrawn EP2025866A1 (de) | 2007-08-08 | 2007-08-08 | Verfahren zur Herstellung einer Turbinenkomponente und entsprechende Turbinenkomponente |
Country Status (3)
| Country | Link |
|---|---|
| EP (2) | EP2025866A1 (de) |
| PL (1) | PL2176520T3 (de) |
| WO (1) | WO2009019131A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011077872A1 (ja) | 2009-12-21 | 2011-06-30 | 三菱重工業株式会社 | 単流型タービンにおける冷却方法及び装置 |
| GB201901557D0 (en) | 2019-02-05 | 2019-03-27 | Rolls Royce Plc | Matallic shaft |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743165A (en) * | 1986-10-22 | 1988-05-10 | United Technologies Corporation | Drum rotors for gas turbine engines |
| DE4239710A1 (de) * | 1992-11-26 | 1994-06-01 | Abb Patent Gmbh | Läufer einer Turbine |
| DE10052176B4 (de) * | 1999-10-21 | 2004-07-08 | Kabushiki Kaisha Toshiba, Kawasaki | Dampfturbinenrotor und Verfahren zur Herstellung desselben |
| DE10114612A1 (de) * | 2001-03-23 | 2002-09-26 | Alstom Switzerland Ltd | Rotor für eine Turbomaschine sowie Verfahren zur Herstellung eines solchen Rotors |
| CN100335747C (zh) * | 2002-12-05 | 2007-09-05 | 西门子公司 | 透平轴及其制造方法和应用 |
| DE10348422B4 (de) * | 2003-10-14 | 2015-04-23 | Alstom Technology Ltd. | Thermisch belastetes Bauteil, sowie Verfahren zur Herstellung eines solchen Bauteils |
-
2007
- 2007-08-08 EP EP07015626A patent/EP2025866A1/de not_active Withdrawn
-
2008
- 2008-07-22 PL PL08786328T patent/PL2176520T3/pl unknown
- 2008-07-22 WO PCT/EP2008/059592 patent/WO2009019131A1/de not_active Ceased
- 2008-07-22 EP EP08786328.8A patent/EP2176520B1/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009019131A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| PL2176520T3 (pl) | 2017-04-28 |
| EP2176520B1 (de) | 2016-08-31 |
| WO2009019131A1 (de) | 2009-02-12 |
| EP2025866A1 (de) | 2009-02-18 |
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