DE102006033297A1 - Repair process for blades of gas turbine compressor involves heat treatment using laser beam in locally limited region influenced by welding heat - Google Patents
Repair process for blades of gas turbine compressor involves heat treatment using laser beam in locally limited region influenced by welding heat Download PDFInfo
- Publication number
- DE102006033297A1 DE102006033297A1 DE102006033297A DE102006033297A DE102006033297A1 DE 102006033297 A1 DE102006033297 A1 DE 102006033297A1 DE 102006033297 A DE102006033297 A DE 102006033297A DE 102006033297 A DE102006033297 A DE 102006033297A DE 102006033297 A1 DE102006033297 A1 DE 102006033297A1
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- Germany
- Prior art keywords
- laser beam
- heat treatment
- blades
- gas turbine
- welding
- 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.)
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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
- F01D5/005—Repairing methods or devices
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/129—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding specially adapted for particular articles or workpieces
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/002—Repairing turbine components, e.g. moving or stationary blades, rotors
- B23P6/005—Repairing turbine components, e.g. moving or stationary blades, rotors using only replacement pieces of a particular form
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
-
- 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
- F01D5/34—Rotor-blade aggregates of unitary construction, e.g. formed of sheet laminae
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
-
- 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
-
- 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
-
- 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
- F05D2230/80—Repairing, retrofitting or upgrading methods
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Ceramic Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Reparatur der Schaufeln von als BLISK ausgeführten Verdichtern eines Gasturbinentriebwerks, bei dem ein defektes Schaufelteil abgetrennt, an den verbleibenden Schaufelstumpf ein entsprechendes Ansatzstück angeschweißt und anschließend eine Wärmebehandlung durchgeführt wird.The The invention relates to a method for repairing the blades of executed as BLISK Compressors of a gas turbine engine, in which a defective blade part separated, to the remaining blade stump a corresponding Attachment welded and then a heat treatment carried out becomes.
Bei Gasturbinentriebwerken werden bekanntermaßen in BLISK-Bauweise ausgebildete Verdichter eingesetzt, die sich durch optimale Strömungsführung und hohen Verdichterwirkungsgrad bei geringem Gewicht auszeichnen. Gegenüber herkömmlichen Verdichtern mit separat ausgebildeten und an der Verdichterscheibe gehaltenen Schaufeln bilden die Scheibe und die Schaufeln bei einer BLISK ein integrales, durch Fräsen aus Vollmaterial, ECM oder durch eine lineare Reibschweißverbindung zwischen Scheibe und Schaufel gefertigtes Bauteil. Während beschädigte Schaufeln von konventionellen Verdichtern auf einfache Weise gegen neue Schaufeln ausgetauscht werden, können die integral mit der Verdichterscheibe verbundenen Verdichterschaufeln einer BLISK nur partiell nachgearbeitet werden oder müssen – bei größeren Schäden – vollständig von der Scheibe abgetrennt werden. Das bei kleineren Schaufelgeometrien nur durch Schmelzschweißen mögliche Anschweißen einer neuen Verdichterschaufel oder eines Schaufelteils erfordert jedoch zum Abbau der Eigenspannungen in dem durch Wärme beeinflussten Bereich und zur Verbesserung der mechanischen Eigenschaften eine Wärmebehandlung in der Schweißzone, die entweder lokal – mit bekannten Kapseltechniken oder durch Anströmen von Heißgas – oder durch Wärmebehandlung des gesamten Bauteils in einem Ofen durchgeführt wird. Während die bekannten lokalen Verfahren für die jeweilige Schaufelgeometrie eine bestimmte, aufwendige Verkapselungsvorrichtung benötigen, ist die Wärmebehandlung des gesamten Bauteils insofern nachteilig, als sich die BLISK dabei verziehen kann und eine zuvor erzeugte Oberflächenverfestigung wiederholt oder Beschichtungen erneut aufgetragen werden müssen. Schließlich kann bei wiederholten Reparaturen die Wärmebehandlung aufgrund der sich dabei ändernden Materialeigenschaften nicht uneingeschränkt wiederholt werden.at Gas turbine engines are known to be designed in BLISK design Compressors used, which are characterized by optimal flow control and high compressor efficiency with low weight. Compared to conventional Compressors with separately formed and on the compressor disk held blades form the disc and the blades at one BLISK an integral, by milling made of solid material, ECM or by a linear friction welding connection manufactured between disc and blade component. While damaged blades from conventional compressors in a simple way against new blades can be exchanged the compressor blades integrally connected to the compressor disk BLISK are only partially reworked or must - in case of major damage - completely by the Disc be separated. That with smaller blade geometries only by fusion welding possible welding a However, new compressor blade or a blade part requires for Reduction of residual stresses in the heat affected area and to improve the mechanical properties of a heat treatment in the welding zone, either locally - with known capsule techniques or by flowing hot gas - or by heat treatment the entire component is carried out in an oven. While the well-known local Procedure for the particular blade geometry a specific, expensive encapsulation device need, is the heat treatment the entire component disadvantageous, as the BLISK thereby can warp and repeated a previously generated surface hardening or coatings must be reapplied. Finally, can at repeated repairs, the heat treatment due to the thereby changing Material properties are not fully repeated.
Der Erfindung liegt die Aufgabe zugrunde, ein auf dem Anschweißen endkonturnaher Schaufeln oder Schaufelabschnitte basierendes Reparaturverfahren für BLISKs anzugeben, das bei unterschiedlichen Geometrien des Schweißnahtverlaufs mit geringem Vorrichtungsaufwand eine lokale Wärmebehandlung des beim Schweißen wärmebeeinflussten Bereichs der Schaufel erlaubt.Of the Invention is based on the object, an endkonturnaher on the welding Shovel or blade sections based repair process for BLISKs specify this with different geometries of the weld seam Local heat treatment of the area affected by heat during welding, with little device outlay the shovel allowed.
Erfindungsgemäß wird die Aufgabe mit einem Verfahren zur Reparatur von BLISKs gemäß den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.According to the invention Task with a method for repairing BLISKs according to the features of claim 1. Advantageous developments of the invention are the subject of the dependent claims.
Der Grundgedanke der Erfindung besteht in einer genau auf den durch die Schweißwärme beeinflussten Bereich begrenzten Wärmebehandlung mit einem Laserstrahl. Dadurch können die verschiedensten Schaufel- bzw. Schweißnahtgeometrien in einem eng begrenzten Bereich wärmebehandelt werden und es entfällt der für eine lokale Wärmebehandlung nach dem Stand der Technik hohe Vorrichtungsaufwand.Of the Basic idea of the invention consists in a precise on the influenced the welding heat Area limited heat treatment with a laser beam. Thereby can the most diverse blade or weld geometries in a tight limited area heat treated be and it will be deleted the for a local heat treatment According to the prior art high device cost.
Die Parameter für den Wärmeeintrag in das Material werden durch den Laserstrahl selbst und durch die Geschwindig keit, mit der der Laserstrahl an der Schaufeloberfläche bewegt wird, eingestellt.The Parameters for the heat input in the material are by the laser beam itself and by the Speed with which the laser beam moves on the blade surface is set.
Besonders vorteilhaft ist es, wenn die Schweißverbindung mit einem Laserstrahl hergestellt wird, weil dann die gleiche Laseroptik mit entsprechend modifizierter Form des Laserstrahl sowie der Bewegung und der Bewegungsgeschwindigkeit auch für die lokale Wärmebehandlung eingesetzt werden kann.Especially It is advantageous if the welded connection with a laser beam is made, because then the same laser optics with accordingly modified form of the laser beam as well as the movement and the movement speed also for the local heat treatment can be used.
Der Laserstrahl kann mäanderförmig oder in einem bestimmten Raster mit einem Laserstrahl punktuell über den durch die Schweißwärme beeinflussten Bereich geführt werden.Of the Laser beam can meander or in a particular grid with a laser beam punctually over the influenced by the welding heat Area led become.
Gemäß einem weiteren Merkmal der Erfindung erfolgt die Wärmebehandlung zur Vermeidung einer Oxidation des Werkstoffs in einer Schutzgasatmosphäre, und zwar entweder in einer Kammer oder in einem dem Schweißnahtbereich bzw. dem spezifischen Wärmebehandlungsbereich kontinuierlich zugeführten Schutzgasstrom.According to one Another feature of the invention is the heat treatment to avoid a Oxidation of the material in a protective gas atmosphere, and although either in a chamber or in the weld area or the specific heat treatment area continuously supplied Protective gas flow.
Die
Erfindung wird in dem nachfolgenden Ausführungsbeispiel näher erläutert. Die
zugehörige Zeichnung
zeigt eine Seitenansicht eines Teils einer BLISK
Von einem in BLISK-Bauweise ausgebildeten Verdichter eines Gasturbinentriebwerks werden die durch Fremdeinwirkung beschädigten Schaufeln oder Schaufelteile abgetrennt und neue, ein bestimmtes Aufmaß für eine anschließende Nachbearbeitung aufweisende Schaufelansatzstücke durch Schmelzschweißen mit einem Laserstrahl angeschweißt. Die zum Abbau der in dem durch den Schweißvorgang durch Wärme beeinflussten Bereich auftretenden Eigenspannungen erforderliche, lokal begrenzte Wärmebehandlung kann mit der bereits beim Laserstrahlschweißen verwendeten Laseroptik erfolgen, jedoch mit einem modifizierten Laserstrahl und einer geänderten, den gesamten durch die Erwärmung beim Schweißen betroffenen Bereich erfassenden Laserstrahlführung. Das heißt, der Laserstrahl ist so entlang der Schweißnaht geführt und fokussiert, dass die Schweißnaht und der beidseitig an diese angrenzende, durch Wärme beeinflusste Teil der betreffenden Verdichterschaufel von dem Laserstrahl erwärmt wird. Außerdem wird die Laseroptik so eingestellt und mit einer solchen Geschwindigkeit bewegt, dass der Laserstrahl im Schweißnahtbereich genau die für die Wärmebehandlung zum Spannungsarmglühen erforderliche Temperatur aufweist. Der Laserstrahl wird beispielsweise mäanderförmig über den Schweißnahtbereich geführt. Die Wärmebehandlung kann auch mit einem in einem bestimmten Raster gepulsten Laserstrahl durchgeführt werden. Um eine Oxidation des Werkstoffs zu vermeiden, erfolgt die Wärmebehandlung unter Schutzgas, und zwar entweder in einer Kammer oder durch lokale Zuführung eines Schutzgasstroms, beispielsweise Argon, im Wärmebehandlungsbereich. Im Anschluss an die Laserstrahl-Wärmebehandlung können bekannte Prüfverfahren und eine Fertigbearbeitung der Schaufel durchgeführt werden.From a compressor of a gas turbine engine constructed in BLISK design, the blades or blade parts damaged by external influences are separated and new blade extensions which have a certain allowance for subsequent reworking are welded by fusion welding with a laser beam. The to dismantle in the by the Welding process by heat-affected area occurring residual stresses required, localized heat treatment can be done with the laser optics already used in laser beam welding, but with a modified laser beam and a modified, the entire affected by the heating during welding area detecting laser beam guide. That is, the laser beam is guided and focused along the weld so that the weld seam and the heat affected part of the respective compressor blade on both sides thereof are heated by the laser beam. In addition, the laser optics is adjusted and moved at such a speed that the laser beam in the weld area has exactly the temperature required for the heat treatment for stress relief annealing. The laser beam is guided, for example meandering over the weld seam area. The heat treatment can also be carried out with a laser beam pulsed in a certain pattern. In order to avoid oxidation of the material, the heat treatment is carried out under protective gas, either in a chamber or by local supply of a protective gas stream, such as argon, in the heat treatment area. Following the laser beam heat treatment, known test methods and finish machining of the blade can be performed.
Aufgrund der auf den Schweißnahtbereich beschränkten Wärmebehandlung kann der Verzug des Werkstücks (BLISK) minimiert werden. Eine erneute Oberflächenbeschichtung oder Verfestigung der Oberfläche, beispielsweise durch Kugelstrahlen, der nicht wärmebehandelten Bereiche ist nicht erforderlich. Der Vorrichtungsaufwand ist gegenüber bekannten Vorrichtungen zur lokalen Wärmebehandlung gering. Im vorliegenden Ausführungsbeispiel ist es weiterhin vor teilhaft, dass die für den Schweißvorgang verwendete Laseroptik, und zwar unmittelbar nach der Herstellung der Schweißnaht, auch für die Wärmebehandlung verwendet werden kann und somit der apparative Aufwand deutlich verringert wird.by virtue of the heat treatment limited to the weld area can the delay of the workpiece (BLISK) can be minimized. A renewed surface coating or solidification of Surface, for example, by shot peening, which is not heat treated areas not mandatory. The device overhead is over known Devices for local heat treatment low. In the present embodiment It is still partly geous that for the welding process used laser optics, immediately after manufacture the weld, also for the heat treatment can be used and thus the equipment cost significantly is reduced.
- 11
- BLISKblisk
- 22
- Laseroptiklaser optics
- 33
- Laserstrahllaser beam
- 44
- Umlenkspiegeldeflecting
- 55
- BLISK-SchaufelBlisk blade
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006033297A DE102006033297A1 (en) | 2006-07-17 | 2006-07-17 | Repair process for blades of gas turbine compressor involves heat treatment using laser beam in locally limited region influenced by welding heat |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006033297A DE102006033297A1 (en) | 2006-07-17 | 2006-07-17 | Repair process for blades of gas turbine compressor involves heat treatment using laser beam in locally limited region influenced by welding heat |
Publications (1)
Publication Number | Publication Date |
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DE102006033297A1 true DE102006033297A1 (en) | 2008-01-24 |
Family
ID=38830643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102006033297A Withdrawn DE102006033297A1 (en) | 2006-07-17 | 2006-07-17 | Repair process for blades of gas turbine compressor involves heat treatment using laser beam in locally limited region influenced by welding heat |
Country Status (1)
Country | Link |
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DE (1) | DE102006033297A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2923741A1 (en) * | 2007-11-19 | 2009-05-22 | Snecma Services Sa | Repairing thermomechanical component e.g. turbomachine blade using high energy beam e.g. electron/laser beam, by replacing damaged portion of component with another portion such as inlay, and performing heat treatment at junction zone |
WO2010094273A2 (en) | 2009-02-21 | 2010-08-26 | Mtu Aero Engines Gmbh | Production of a turbine blisk having an oxidation and/or corrosion protection layer |
RU2704353C1 (en) * | 2019-03-22 | 2019-10-28 | Федеральное государственное унитарное предприятие "Центральный институт авиационного моторостроения имени П.И. Баранова" | Method of hollow articles laser welding |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD297097A5 (en) * | 1990-08-09 | 1992-01-02 | Zis Halle Gmbh,De | METHOD FOR PRODUCING TURBINE BLADES |
US6238187B1 (en) * | 1999-10-14 | 2001-05-29 | Lsp Technologies, Inc. | Method using laser shock peening to process airfoil weld repairs pertaining to blade cut and weld techniques |
DE102004007265A1 (en) * | 2003-12-18 | 2005-09-01 | Heiko Schmidt | Press for processing workpieces has a plunger system to close the gap between the tool and workpiece followed by a higher operating pressure |
US7022938B2 (en) * | 2001-08-09 | 2006-04-04 | Kabushiki Kaisha Toshiba | Repair method for structure and repair welding apparatus |
-
2006
- 2006-07-17 DE DE102006033297A patent/DE102006033297A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD297097A5 (en) * | 1990-08-09 | 1992-01-02 | Zis Halle Gmbh,De | METHOD FOR PRODUCING TURBINE BLADES |
US6238187B1 (en) * | 1999-10-14 | 2001-05-29 | Lsp Technologies, Inc. | Method using laser shock peening to process airfoil weld repairs pertaining to blade cut and weld techniques |
US7022938B2 (en) * | 2001-08-09 | 2006-04-04 | Kabushiki Kaisha Toshiba | Repair method for structure and repair welding apparatus |
DE102004007265A1 (en) * | 2003-12-18 | 2005-09-01 | Heiko Schmidt | Press for processing workpieces has a plunger system to close the gap between the tool and workpiece followed by a higher operating pressure |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2923741A1 (en) * | 2007-11-19 | 2009-05-22 | Snecma Services Sa | Repairing thermomechanical component e.g. turbomachine blade using high energy beam e.g. electron/laser beam, by replacing damaged portion of component with another portion such as inlay, and performing heat treatment at junction zone |
WO2010094273A2 (en) | 2009-02-21 | 2010-08-26 | Mtu Aero Engines Gmbh | Production of a turbine blisk having an oxidation and/or corrosion protection layer |
DE102009010109A1 (en) | 2009-02-21 | 2010-09-23 | Mtu Aero Engines Gmbh | Production of a turbine blisk with an oxidation or corrosion protection layer |
DE102009010109A8 (en) * | 2009-02-21 | 2011-01-05 | Mtu Aero Engines Gmbh | Production of a turbine blisk with an oxidation or corrosion protection layer |
RU2704353C1 (en) * | 2019-03-22 | 2019-10-28 | Федеральное государственное унитарное предприятие "Центральный институт авиационного моторостроения имени П.И. Баранова" | Method of hollow articles laser welding |
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