EP2176520B1 - Procédé de fabrication d'un composant de turbine et composant de turbine associé - Google Patents

Procédé de fabrication d'un composant de turbine et composant de turbine associé Download PDF

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Publication number
EP2176520B1
EP2176520B1 EP08786328.8A EP08786328A EP2176520B1 EP 2176520 B1 EP2176520 B1 EP 2176520B1 EP 08786328 A EP08786328 A EP 08786328A EP 2176520 B1 EP2176520 B1 EP 2176520B1
Authority
EP
European Patent Office
Prior art keywords
component
turbine
temperature
steel
subcomponent
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.)
Not-in-force
Application number
EP08786328.8A
Other languages
German (de)
English (en)
Other versions
EP2176520A1 (fr
Inventor
Kai 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
Original Assignee
Siemens AG
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 filed Critical Siemens AG
Priority to EP08786328.8A priority Critical patent/EP2176520B1/fr
Priority to PL08786328T priority patent/PL2176520T3/pl
Publication of EP2176520A1 publication Critical patent/EP2176520A1/fr
Application granted granted Critical
Publication of EP2176520B1 publication Critical patent/EP2176520B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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.
  • 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.

Claims (17)

  1. Procédé de fabrication d'un composant ( 1 ) de turbine comprenant les stades :
    Premier stade :
    - on se procure un premier sous-composant ( 2 ) comportant un super-alliage,
    Deuxième stade :
    - on se procure un deuxième sous-composant ( 3 ) comportant un acier résistant à chaud,
    Troisième stade :
    - on soude d'assemblage le premier sous-composant ( 2 ) au deuxième sous-composant ( 3 ), un cordon ( 5 ) de soudure étant formé entre le premier sous-composant ( 2 ) et le deuxième sous-composant ( 3 ),
    Quatrième stade :
    - on porte le cordon ( 5 ) de soudure à une température qui correspond de 90 % à 100 % de la température de revenu de l'acier résistant à chaud.
  2. Procédé suivant la revendication 1,
    dans lequel on forme le premier sous-composant ( 1 ) en un matériau à base de nickel.
  3. Procédé suivant la revendication 2,
    dans lequel on forme le premier sous-composant ( 2 ) en un super-alliage à base de nickel.
  4. Procédé suivant la revendication 1, 2 ou 3,
    dans lequel on forme le deuxième sous-composant ( 3 ) en un acier à 10 % en poids de Cr.
  5. Procédé suivant l'une des revendications précédentes,
    dans lequel on forme le deuxième sous-composant ( 3 ) en un acier X12.
  6. Procédé suivant l'une des revendications précédentes,
    dans lequel la température de revenu est de 730°C.
  7. Procédé suivant l'une des revendications précédentes,
    dans lequel la température est comprise entre 80 % et 120 % de la température de revenu.
  8. Procédé suivant l'une des revendications précédentes,
    dans lequel on porte à la température tout le composant ( 1 ) de turbine.
  9. Procédé suivant l'une des revendications précédentes,
    dans lequel le composant ( 1 ) de turbine comprend un arbre pour une turbine à vapeur.
  10. Procédé suivant l'une des revendications 1 à 8,
    dans lequel le composant ( 1 ) de turbine comprend une carcasse pour une turbine à vapeur.
  11. Composant ( 1 ) de turbine,
    comprenant un premier sous-composant ( 2 ) comportant un super-alliage et un deuxième sous-composant ( 3 ) soudé directement au premier sous-composant ( 2 ) et en un acier résistant à chaud,
    dans lequel le cordon de soudure est traité à chaud à une température qui correspond de 90 % à 110 % de la température de revenu de l'acier résistant à chaud.
  12. Composant ( 1 ) de turbine suivant la revendication 11, dans lequel le premier sous-composant ( 2 ) est en un matériau à base de nickel.
  13. Procédé suivant la revendication 11,
    dans lequel le premier sous-composant ( 2 ) est en un super-alliage à base de nickel.
  14. Procédé suivant l'une des revendications 11 à 13,
    dans lequel le deuxième sous-composant ( 3 ) est en un acier à 10 % de chrome.
  15. Procédé suivant la revendication 11,
    dans lequel le deuxième sous-composant ( 3 ) est en un acier X12.
  16. Procédé suivant l'une des revendications 11 à 15,
    dans lequel le composant ( 1 ) de turbine est un arbre pour une turbine à vapeur.
  17. Procédé suivant l'une des revendications 11 à 15,
    dans lequel le composant ( 1 ) de turbine est une carcasse pour une turbine à vapeur.
EP08786328.8A 2007-08-08 2008-07-22 Procédé de fabrication d'un composant de turbine et composant de turbine associé Not-in-force EP2176520B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08786328.8A EP2176520B1 (fr) 2007-08-08 2008-07-22 Procédé de fabrication d'un composant de turbine et composant de turbine associé
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 (fr) 2007-08-08 2007-08-08 Procédé de fabrication d'un composant de turbine et composant de turbine associée.
PCT/EP2008/059592 WO2009019131A1 (fr) 2007-08-08 2008-07-22 Procédé de fabrication d'un composant de turbine
EP08786328.8A EP2176520B1 (fr) 2007-08-08 2008-07-22 Procédé de fabrication d'un composant de turbine et composant de turbine associé

Publications (2)

Publication Number Publication Date
EP2176520A1 EP2176520A1 (fr) 2010-04-21
EP2176520B1 true EP2176520B1 (fr) 2016-08-31

Family

ID=38942159

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07015626A Withdrawn EP2025866A1 (fr) 2007-08-08 2007-08-08 Procédé de fabrication d'un composant de turbine et composant de turbine associée.
EP08786328.8A Not-in-force EP2176520B1 (fr) 2007-08-08 2008-07-22 Procédé de fabrication d'un composant de turbine et composant de turbine associé

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP07015626A Withdrawn EP2025866A1 (fr) 2007-08-08 2007-08-08 Procédé de fabrication d'un composant de turbine et composant de turbine associée.

Country Status (3)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2518277B1 (fr) 2009-12-21 2018-10-10 Mitsubishi Hitachi Power Systems, Ltd. Procédé et dispositif de refroidissement dans une turbine simple flux
GB201901557D0 (en) 2019-02-05 2019-03-27 Rolls Royce Plc Matallic shaft

Family Cites Families (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
US6499946B1 (en) * 1999-10-21 2002-12-31 Kabushiki Kaisha Toshiba Steam turbine rotor and manufacturing method thereof
DE10114612A1 (de) * 2001-03-23 2002-09-26 Alstom Switzerland Ltd Rotor für eine Turbomaschine sowie Verfahren zur Herstellung eines solchen Rotors
AU2003292993A1 (en) * 2002-12-05 2004-06-23 Siemens Aktiengesellschaft Turbine shaft and production of a turbine shaft
DE10348422B4 (de) * 2003-10-14 2015-04-23 Alstom Technology Ltd. Thermisch belastetes Bauteil, sowie Verfahren zur Herstellung eines solchen Bauteils

Also Published As

Publication number Publication date
EP2025866A1 (fr) 2009-02-18
WO2009019131A1 (fr) 2009-02-12
EP2176520A1 (fr) 2010-04-21
PL2176520T3 (pl) 2017-04-28

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