EP1996363A1 - Procédé pour relier des éléments de construction métalliques et composant ainsi fabriqué - Google Patents

Procédé pour relier des éléments de construction métalliques et composant ainsi fabriqué

Info

Publication number
EP1996363A1
EP1996363A1 EP07722026A EP07722026A EP1996363A1 EP 1996363 A1 EP1996363 A1 EP 1996363A1 EP 07722026 A EP07722026 A EP 07722026A EP 07722026 A EP07722026 A EP 07722026A EP 1996363 A1 EP1996363 A1 EP 1996363A1
Authority
EP
European Patent Office
Prior art keywords
component
components
metallic materials
different
inductor
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Withdrawn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
EP07722026A
Other languages
German (de)
English (en)
Inventor
Herbert Hanrieder
Alexander Gindorf
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.)
MTU Aero Engines AG
Original Assignee
MTU Aero Engines GmbH
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 MTU Aero Engines GmbH filed Critical MTU Aero Engines GmbH
Publication of EP1996363A1 publication Critical patent/EP1996363A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K13/00—Welding by high-frequency current heating
    • B23K13/01—Welding by high-frequency current heating by induction heating
    • 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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3061—Fixing blades to rotors; Blade roots ; Blade spacers by welding, brazing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/001—Turbines

Definitions

  • the present invention relates to a method for connecting metallic components, in particular components of a gas turbine, wherein the connecting of corresponding connection surfaces of the components by means of an inductive high frequency pressure welding takes place.
  • the invention further relates to a component produced by the method.
  • inductive high-frequency pressure welding does not define the method or the component in the present case to a specific frequency range. Rather, frequencies in the low kHz range up to the high MHz range are used, so that the new term inductive pressure welding (IPS) could be introduced.
  • IPS inductive pressure welding
  • a method according to the invention for connecting metallic components uses inductive high-frequency pressure welding to connect corresponding connection surfaces of the components.
  • the components consist of different or similar metallic materials with different melting points, permeabilities and / or thermal conductivities.
  • at least one process-specific parameter is controlled such that at least the connection surfaces are heated substantially simultaneously at least to at least near the respective melting point of the metallic materials. Due to the control possibilities in the method according to the invention, the components to be welded can each form substantially simultaneously a molten layer on the connecting surfaces, which are then welded together by simple compression. It is possible that a connection surface of the first component is melted and the connection surface of the second component remains below the melting temperature.
  • the control of at least one process parameter during the process of inductive high frequency pressure welding comprises varying the frequency induced by at least one inductor. Due to the different heights of the frequencies, which are usually between 7 kHz and 2.5 MHz, it is ensured that the materials are superplastic formable and thus connectable to each other.
  • the frequencies are chosen in particular depending on the geometry of the connecting surfaces.
  • the induction by means of an inductor, which induces different strengths takes place. But it is also possible to use two or more inductors.
  • the connecting surfaces of the components are exposed to the different frequencies for different lengths of time.
  • control of at least one process parameter during the process of inductive high frequency pressure welding comprises the variation of the position of the components relative to the inductor or to the inductors.
  • control of at least one process parameter during the process of inductive high-frequency compression welding comprises the variation of the spacing of the respective components relative to the inductor.
  • a displacement of the inductor in the direction of the component consisting of the metallic material with the higher melting temperature take place.
  • the first component consists of steel and the second component of a TiAl alloy.
  • the first and second component consist of similar metallic materials and are produced by different manufacturing processes. This applies, for example, to forged components, components produced by casting, components consisting of single crystals and directionally solidified components.
  • An inventive component in particular a component of a gas turbine, consists of a first component and of a second component, wherein the first and the second component of different or similar metallic materials with different permeabilities and / or varnishleitzuen exist. The components are joined together by means of an inductive high frequency pressure welding.
  • At least one process-specific parameter is controlled during the process of inductive high-frequency pressure welding such that at least the joining or joining surfaces of the components are heated substantially simultaneously to at least near the respective melting point of the metallic materials.
  • the first component may be made of steel and the second component of a titanium aluminum alloy. But it is also possible that the first and the second component consist of similar metallic materials and are produced by different manufacturing processes.
  • the first component is a blade of a rotor in a gas turbine and the second component is a ring or a disk of the rotor.
  • These components are BLEDs (Bladed Ring) or BLISKs (Bladed Disk) of gas turbine engines.
  • FIG. 10 shows a cut through a component 10 connected and produced according to the invention.
  • the component 10 consists of a first component 12 and a second component 14, which have been welded together by means of an inductive high frequency pressure welding.
  • at least one process-specific parameter was controlled in such a way that at least the connecting surfaces 20, 22 of the components 12, 14 were heated substantially simultaneously to at least near the respective melting point of the metallic materials.
  • the first component 12 is made of steel and the second component of a a titanium aluminum alloy. To connect the first and second components 12, 14, they have been positioned substantially flush and spaced from one another. By energizing an inductor (not shown) with high frequency current and moving together by contacting the bonding pads 20, 24, they were welded together.
  • the substantially simultaneous heating of the bonding surfaces 20, 22 each to at least close to the respective melting point of the metallic materials was carried out at a frequency of about 1.0 MHz.
  • the coupling distance, ie the relative distance between the inductor and the components 12, 14, was 1.5 mm.
  • the inductor was shifted toward the higher melting material, titanium aluminum alloy.
  • the displacement was 2 mm.
  • the first and second components 12, 14 were connected to each other with a force of 250 N by means of an upsetting path of 1 mm and a welding time of 1.5 s.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

La présente invention concerne un procédé pour relier des éléments (12, 14) de construction métalliques, notamment des éléments de construction d'une turbine à gaz, la liaison entre les surfaces (20, 22) de liaison correspondantes des éléments (12, 14) de construction s'effectuant par soudage inductif par pression à haute fréquence et les éléments (12, 14) de construction se composant de matériaux métalliques différents ou similaires ayant des perméabilités et/ou des conductivités thermiques différentes. Conformément à l'invention, au moins un paramètre spécifique du processus est commandé pendant l'opération de soudage inductif par pression à haute fréquence de telle sorte qu'au moins les surfaces (20, 22) de liaison sont chauffées sensiblement simultanément à chaque fois jusqu'à une température au moins proche du point de fusion respectif des matériaux métalliques. L'invention concerne en plus un composant, notamment un composant d'une turbine à gaz, composé d'un premier élément (12) de construction et d'un deuxième élément (14) de construction, le premier et le deuxième éléments (12, 14) de construction étant constitués de matériaux métalliques différents ou similaires ayant des perméabilités et/ou des conductivités thermiques différentes et étant soudés par soudage inductif par pression à haute fréquence. Conformément à l'invention, au moins un paramètre spécifique du processus est commandé pendant l'opération de soudage inductif par pression à haute fréquence de telle sorte qu'au moins les surfaces (20, 22) de liaison des éléments (12, 14) de construction sont chauffées sensiblement simultanément à chaque fois jusqu'à une température au moins proche du point de fusion respectif des matériaux métalliques.
EP07722026A 2006-03-20 2007-03-14 Procédé pour relier des éléments de construction métalliques et composant ainsi fabriqué Withdrawn EP1996363A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006012662A DE102006012662A1 (de) 2006-03-20 2006-03-20 Verfahren zum Verbinden von metallischen Bauelementen und damit hergestelltes Bauteil
PCT/DE2007/000453 WO2007110036A1 (fr) 2006-03-20 2007-03-14 Procédé pour relier des éléments de construction métalliques et composant ainsi fabriqué

Publications (1)

Publication Number Publication Date
EP1996363A1 true EP1996363A1 (fr) 2008-12-03

Family

ID=38194507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07722026A Withdrawn EP1996363A1 (fr) 2006-03-20 2007-03-14 Procédé pour relier des éléments de construction métalliques et composant ainsi fabriqué

Country Status (5)

Country Link
US (1) US20090290985A1 (fr)
EP (1) EP1996363A1 (fr)
CA (1) CA2645842A1 (fr)
DE (1) DE102006012662A1 (fr)
WO (1) WO2007110036A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006031388A1 (de) * 2006-07-07 2008-01-17 Mtu Aero Engines Gmbh Verfahren für die Reparatur und/oder den Austausch von Einzelelementen eines Bauteils einer Gasturbine
DE102008034930A1 (de) * 2008-07-26 2010-01-28 Mtu Aero Engines Gmbh Verfahren zum Erzeugen einer Fügeverbindung mit einkristallinem oder gerichtet erstarrtem Werkstoff
DE102008046742A1 (de) * 2008-09-11 2010-03-18 Mtu Aero Engines Gmbh Verfahren zum Verbinden von Bauteilen
DE102010032464B4 (de) 2010-07-28 2017-03-16 MTU Aero Engines AG Duale Blisken im Hochdruckverdichter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186473A (en) * 1978-08-14 1980-02-05 General Motors Corporation Turbine rotor fabrication by thermal methods
US6184508B1 (en) * 1993-12-16 2001-02-06 Shigeru Isoyama Apparatus for joining metal pieces using induction heating
ATE249571T1 (de) * 1996-10-18 2003-09-15 Daido Steel Company Ltd Turbinenrotor aus ti-al und verfahren zur herstellung dieses rotors
DE19858702B4 (de) * 1998-12-18 2004-07-01 Mtu Aero Engines Gmbh Verfahren zum Verbinden von Schaufelteilen einer Gasturbine, sowie Schaufel und Rotor für eine Gasturbine
DE10206447B4 (de) * 2002-02-11 2004-06-03 Mtu Aero Engines Gmbh Verfahren und Vorrichtung zum Halten eines zu verbindenden, metallischen Bauteils und Verfahren zum Verbinden eines metallischen Bauteils mit einem weiteren Bauteil
DE102006012660A1 (de) * 2006-03-20 2007-09-27 Mtu Aero Engines Gmbh Bauteil und Verfahren zum Verbinden von metallischen Bauelementen

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2007110036A1 *

Also Published As

Publication number Publication date
WO2007110036A1 (fr) 2007-10-04
US20090290985A1 (en) 2009-11-26
CA2645842A1 (fr) 2007-10-04
DE102006012662A1 (de) 2007-09-27

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