EP2025866A1 - Verfahren zur Herstellung einer Turbinenkomponente und entsprechende Turbinenkomponente - Google Patents

Verfahren zur Herstellung einer Turbinenkomponente und entsprechende Turbinenkomponente Download PDF

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Publication number
EP2025866A1
EP2025866A1 EP07015626A EP07015626A EP2025866A1 EP 2025866 A1 EP2025866 A1 EP 2025866A1 EP 07015626 A EP07015626 A EP 07015626A EP 07015626 A EP07015626 A EP 07015626A EP 2025866 A1 EP2025866 A1 EP 2025866A1
Authority
EP
European Patent Office
Prior art keywords
subcomponent
temperature
turbine component
turbine
component
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.)
Withdrawn
Application number
EP07015626A
Other languages
German (de)
English (en)
French (fr)
Inventor
Kai Dr. Wieghardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to EP07015626A priority Critical patent/EP2025866A1/de
Priority to PCT/EP2008/059592 priority patent/WO2009019131A1/de
Priority to PL08786328T priority patent/PL2176520T3/pl
Priority to EP08786328.8A priority patent/EP2176520B1/de
Publication of EP2025866A1 publication Critical patent/EP2025866A1/de
Withdrawn legal-status Critical Current

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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.
  • the nickel-base alloys are about three times as expensive as conventional materials.
  • a shaft in a monobloc design would be suitable for use in a steam turbine operated at 700 ° C. steam inlet temperature, the manufacturing, material and processing costs would be comparatively 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 ° C.
  • the major components such as.
  • a steam turbine shaft composed of two materials is disclosed, one comprising a nickel base alloy and the other material being a high strength steel.
  • This turbine shaft is screwed together at its joint by means of an internal screw.
  • screw connections always pose a certain risk, as screw connections can break.
  • Another way to make a superalloy and a high temperature steel component would be to weld the two materials together using a weld.
  • 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 coefficient of thermal expansion, as is the case with nickel base 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 further achieved by a turbine component comprising a first subcomponent (2) comprising a superalloy 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 processing, 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, a residual 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 local, d. H. 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 optimal for use in steam turbine construction and are therefore classified as particularly suitable.
  • the tempering temperature may advantageously be 730 ° C.
  • the temperature at which the weld is to be heated may 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 turbine.
  • 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 are to be considered in the manufacturing process.
  • the FIG. 1 shows a side view of a turbine formed as a shaft component 1.
  • the turbine component 1 comprises a first sub-component 2 and a second sub-component 3.
  • the first sub-component 2 may be formed for example of a nickel-based superalloy or 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, in the in the FIG. 1 shown arrangement from the left with steam inlet temperatures of about 700 ° C are acted upon.
  • 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 ° 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.
  • the temperature can be selected between 80% and 120% of the tempering temperature.
  • the temperature may be between 90% and 110% of the tempering temperature of the high temperature steel.
  • FIG. 2 a designed as a housing for a steam turbine turbine component 1 is shown in a side view. For the sake of clarity, only an upper part of the housing is shown.
  • 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 for FIG. 1 given in relation 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)
EP07015626A 2007-08-08 2007-08-08 Verfahren zur Herstellung einer Turbinenkomponente und entsprechende Turbinenkomponente Withdrawn EP2025866A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP07015626A EP2025866A1 (de) 2007-08-08 2007-08-08 Verfahren zur Herstellung einer Turbinenkomponente und entsprechende Turbinenkomponente
PCT/EP2008/059592 WO2009019131A1 (de) 2007-08-08 2008-07-22 Verfahren zur herstellung einer turbinenkomponente
PL08786328T PL2176520T3 (pl) 2007-08-08 2008-07-22 Sposób wytwarzania elementu turbiny i odpowiedni element turbiny
EP08786328.8A EP2176520B1 (de) 2007-08-08 2008-07-22 Verfahren zur herstellung einer turbinenkomponente und entsprechende turbinenkomponente

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07015626A EP2025866A1 (de) 2007-08-08 2007-08-08 Verfahren zur Herstellung einer Turbinenkomponente und entsprechende Turbinenkomponente

Publications (1)

Publication Number Publication Date
EP2025866A1 true EP2025866A1 (de) 2009-02-18

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 After (1)

Application Number Title Priority Date Filing Date
EP08786328.8A Not-in-force EP2176520B1 (de) 2007-08-08 2008-07-22 Verfahren zur herstellung einer turbinenkomponente und entsprechende turbinenkomponente

Country Status (3)

Country Link
EP (2) EP2025866A1 (pl)
PL (1) PL2176520T3 (pl)
WO (1) WO2009019131A1 (pl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2518277B1 (en) 2009-12-21 2018-10-10 Mitsubishi Hitachi Power Systems, Ltd. Cooling method and device in single-flow turbine
EP3693542A1 (en) * 2019-02-05 2020-08-12 Rolls-Royce plc Metallic shaft

Citations (6)

* Cited by examiner, † Cited by third party
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
DE10052176A1 (de) * 1999-10-21 2001-06-21 Toshiba Kawasaki Kk Dampfturbinenrotor und Verfahren zur Herstellung desselben
EP1243754A2 (de) * 2001-03-23 2002-09-25 ALSTOM (Switzerland) Ltd Rotor für eine Turbomaschine sowie Verfahren zur Herstellung eines solchen Rotors
WO2004051056A1 (de) * 2002-12-05 2004-06-17 Siemens Aktiengesellschaft Turbinenwelle sowie herstellung einer turbinenwelle
DE10348422A1 (de) * 2003-10-14 2005-05-25 Alstom Technology Ltd Thermisch belastetes Bauteil, sowie Verfahren zur Herstellung eines solchen Bauteils

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
DE10052176A1 (de) * 1999-10-21 2001-06-21 Toshiba Kawasaki Kk Dampfturbinenrotor und Verfahren zur Herstellung desselben
EP1243754A2 (de) * 2001-03-23 2002-09-25 ALSTOM (Switzerland) Ltd Rotor für eine Turbomaschine sowie Verfahren zur Herstellung eines solchen Rotors
WO2004051056A1 (de) * 2002-12-05 2004-06-17 Siemens Aktiengesellschaft Turbinenwelle sowie herstellung einer turbinenwelle
DE10348422A1 (de) * 2003-10-14 2005-05-25 Alstom Technology Ltd Thermisch belastetes Bauteil, sowie Verfahren zur Herstellung eines solchen Bauteils

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2518277B1 (en) 2009-12-21 2018-10-10 Mitsubishi Hitachi Power Systems, Ltd. Cooling method and device in single-flow turbine
EP3693542A1 (en) * 2019-02-05 2020-08-12 Rolls-Royce plc Metallic shaft
US11073019B2 (en) 2019-02-05 2021-07-27 Rolls-Royce Plc Metallic shaft

Also Published As

Publication number Publication date
WO2009019131A1 (de) 2009-02-12
PL2176520T3 (pl) 2017-04-28
EP2176520A1 (de) 2010-04-21
EP2176520B1 (de) 2016-08-31

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