DE102018204316A1 - Plant and method for laser deposition welding with remelting for grain enlargement - Google Patents
Plant and method for laser deposition welding with remelting for grain enlargement Download PDFInfo
- Publication number
- DE102018204316A1 DE102018204316A1 DE102018204316.7A DE102018204316A DE102018204316A1 DE 102018204316 A1 DE102018204316 A1 DE 102018204316A1 DE 102018204316 A DE102018204316 A DE 102018204316A DE 102018204316 A1 DE102018204316 A1 DE 102018204316A1
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- Germany
- Prior art keywords
- welding
- box
- component
- gas atmosphere
- build
- 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
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- 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
- B23K26/34—Laser welding for purposes other than joining
- B23K26/342—Build-up 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/127—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an enclosure
-
- 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
- B23K26/60—Preliminary treatment
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- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
- F01D25/285—Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures
-
- 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
-
- 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
- B23P6/007—Repairing turbine components, e.g. moving or stationary blades, rotors using only additive methods, e.g. build-up welding
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- 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
- F05D2230/22—Manufacture essentially without removing material by sintering
-
- 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
- F05D2230/234—Laser 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
- F05D2230/30—Manufacture with deposition of material
- F05D2230/31—Layer deposition
Abstract
Durch die Verwendung einer lokalen Schutzgasatmosphäre für das Auftragschweißen und eine vollständige Schutzgasatmosphäre für ein Umschmelzen wird ein Auftragschweißen mit gröberen Körnern erzeugt.Through the use of a local inert gas atmosphere for build-up welding and a complete inert gas atmosphere for remelting a cladding with coarser grains is produced.
Description
Die Erfindung betrifft eine Anlage und ein Verfahren zum Auftragschweißen, bei dem im Zwischenschritt eine Umschmelzung zur Kornvergrößerung stattfindet.The invention relates to a system and a method for build-up welding, in which takes place in the intermediate step, a remelting for grain enlargement.
Die Erfindung betrifft weiterhin ein Laserstrahl-Auftragschweißen mit pulverförmigen Zusatzwerkstoff unter Verwendung einer Pendelbewegung (Wobbel-Strategie) bzw. Oszillation. Durch die Wobbel-Strategie beim Laserstrahl-Auftragschweißen wird eine Keimbildung und Kornwachstum in der „mushy zone“, der sogenannten „breiigen Zone“, gezielt immer wieder erzeugt, so dass das Wachstum einer kolumnaren Erstarrungsfront unterdrückt bzw. vollständig vermieden wird.The invention further relates to a laser beam cladding with powdery filler material using a pendulum motion (wobble strategy) or oscillation. The sweep strategy during laser cladding welds nucleation and grain growth in the "mushy zone", the so-called "pulpy zone", over and over again, so that the growth of a columnar solidification front is suppressed or completely avoided.
Erste experimentelle Ergebnisse zeigen vielversprechende Ergebnisse mit nahezu rissfreier Gefügestruktur an Nickelbasis-Superlegierungen mit großem Anteil an intermetallischer Phase. Aufgrund der Erstarrungsbedingungen ist jedoch die Kornstruktur im Schweißgut relativ klein verglichen mit gußtechnisch hergestellten Bauteilen aus Nickelbasis-Superlegierungen. Dadurch beiden die mechanischen Eigenschaften unter Hochtemperatur wie Kriechen, LCF mit Haltezeit.First experimental results show promising results with a nearly crack-free microstructure on nickel-base superalloys with a high proportion of intermetallic phase. Due to the solidification conditions, however, the grain structure in the weld metal is relatively small compared to cast components made of nickel-base superalloys. This gives both the mechanical properties under high temperature such as creep, LCF with hold time.
Es ist daher Aufgabe der Erfindung oben genanntes Problem zu lösen.It is therefore an object of the invention to solve the above-mentioned problem.
Die Aufgabe wird gelöst durch eine Anlage gemäß Anspruch 1 und ein Verfahren gemäß Anspruch 2.The object is achieved by a system according to
In den Unteransprüchen sind weitere vorteilhafte Maßnahmen aufgelistet, die beliebig miteinander kombiniert werden könne, um weitere Vorteile zu erzielen.In the dependent claims further advantageous measures are listed, which could be combined with each other in order to achieve further advantages.
Zur Erfindung vorgeschlagen werden eine Anlage und eine Vorgehensweise zum Auftragschweißen, insbesondere mit oszillierender Laserstrahlung, sowie ein Umschmelzprozess mittels Laserstrahlung zur Kornvergrößerung in den geschweißten Bereichen:
- • Anlage, um auf einem Bauteil in einer Schutzgasatmosphäre (insbesondere Argon, Helium) Material aufzutragen, insbesondere mittels Auftragschweißung;
- • vorzugsweise Oszillation der Laserstrahlung (Wobbeln), insbesondere innerhalb der Düse und an der Schmelzbadoberfläche, um eine feinkörnige Mikrostruktur beim Laserstrahl-Auftragschweißen von Nickelbasis-Superlegierungen mit großem Anteil an intermetallischer Phase zu erzielen;
- • optional Mittel zur Erwärmung zwecks Lösungsglühung des aufgetragenen Materials, insbesondere mittels Induktion oder defokussierter Laserstrahlung;
- • weitere Mittel für das Umschmelzen der Auftragschweißung, insbesondere ein Laser.
- Installation for applying material to a component in a protective gas atmosphere (in particular argon, helium), in particular by build-up welding;
- Preferably oscillation of the laser radiation (wobble), especially within the nozzle and on the molten bath surface, to obtain a fine-grained microstructure in laser beam buildup welding of nickel-based superalloys with a high proportion of intermetallic phase;
- Optionally heating means for solution annealing of the applied material, in particular by means of induction or defocused laser radiation;
- • further means for remelting the surfacing, in particular a laser.
Das Verfahren läuft insbesondere wie folgt ab:
- 1. Vorbereitetes, insbesondere ausgemuldetes Bauteil, insbesondere eine Leitschaufel, wird in eine Box eingebracht;
- 2. Auftragschweißen mit Nickelbasis-Superlegierung, insbesondere mit artgleicher Nickelbasis-Legierung; dabei wird vorzugsweise eine oszillierende Laserstrahlung (Wobbeln) verwendet, um feinkörniges Gefüge zu erzielen;
- 3. Wärmebehandlung mittels Lösungsglühung zur Entfernung von kritischen Spannungen nach dem Auftragschweißen: Kritische Eigenspannungen müssen aus der geschweißten Zone entfernt werden (ein direktes Laserstrahl-Umschmelzen würde weitere Spannungen in das Schweißgut einbringen und eine Rissbildung initiieren). Zur Wärmebehandlung können beispielsweise Induktionsspulen eingesetzt werden, die Wärmebehandlung sollte in einer Schutzgasatmosphäre durchgeführt werden;
- 4. Laserstrahl-Umschmelzen der wärmebehandelten Zone zur Erzeugung einer gröberen Kornstruktur; die Umschmelztiefe sollte dabei der aufgebauten Höhe beim Laserstrahl-Auftragschweißen entsprechen.
- 1. Prepared, in particular tempered component, in particular a vane, is placed in a box;
- 2. build-up welding with nickel-based superalloy, in particular with similar nickel-based alloy; In this case, preferably an oscillating laser radiation (wobble) is used to achieve fine-grained structure;
- 3. Solution heat treatment to remove critical stresses after buildup welding: Critical residual stresses must be removed from the welded zone (direct laser melt remelting would introduce additional stresses into the weld metal and initiate cracking). For example, induction coils may be used for the heat treatment, the heat treatment should be carried out in a protective gas atmosphere;
- 4. laser beam remelting of the heat treated zone to produce a coarser grain structure; the remelting depth should correspond to the built-up height in laser beam buildup welding.
Die
Die Figuren und die Beschreibung stellen nur Ausführungsbeispiele der Erfindung dar.The figures and the description represent only embodiments of the invention.
Die Anlage
Das Bauteil
Mittels einer Düse
Dabei wird eine lokale Schutzgasatmosphäre durch die Düse
Die Stelle, auf der aufgetragen wird, wurde vorher entsprechend vorbereitet, insbesondere ausgemuldet.The place on which was applied was previously prepared accordingly, in particular, tolerated.
Dabei kann auch erst dann eine Abdeckung
Im nächsten Schritt wird die Box
Insbesondere kann eine Induktionsspule
Die Wärmebehandlung kann auch durch einen Laser und Laserbestrahlung des Bauteils
Dann wird durch einen Laserstrahl
Ebenso kann auch ein zweiter Laser benutzt werden, um das Bauteil
Bei der Wiederholung der Schritte Auftragschweißen und Umschmelzen kann die Abdeckung immer wieder demontiert und montiert werden oder kann ständig auf dem Boden
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102018204316.7A DE102018204316A1 (en) | 2018-03-21 | 2018-03-21 | Plant and method for laser deposition welding with remelting for grain enlargement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102018204316.7A DE102018204316A1 (en) | 2018-03-21 | 2018-03-21 | Plant and method for laser deposition welding with remelting for grain enlargement |
Publications (1)
Publication Number | Publication Date |
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DE102018204316A1 true DE102018204316A1 (en) | 2019-09-26 |
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DE102018204316.7A Withdrawn DE102018204316A1 (en) | 2018-03-21 | 2018-03-21 | Plant and method for laser deposition welding with remelting for grain enlargement |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005014483A1 (en) * | 2005-03-30 | 2006-10-05 | Fockele, Matthias, Dr. | Device for manufacture of objects by layer-wise constructing from powder-form material has sub-systems of irradiating unit allocated to respective sections of building field on base arrangement |
US20070057412A1 (en) * | 2005-03-23 | 2007-03-15 | 3D Systems, Inc. | Apparatus and method for aligning a removable build chamber within a process chamber |
DE102012206125A1 (en) * | 2012-04-13 | 2013-10-17 | MTU Aero Engines AG | Process for the production of low-pressure turbine blades made of TiAl |
US20150352668A1 (en) * | 2008-09-05 | 2015-12-10 | Mtt Technologies Limited | Additive manufacturing apparatus with a chamber and a removably-mountable optical module; method of preparing a laser processing apparatus with such removably-mountable optical module |
US20160288266A1 (en) * | 2013-11-14 | 2016-10-06 | General Electric Company | Layered manufacturing of single crystal alloy components |
WO2017079409A1 (en) * | 2015-11-06 | 2017-05-11 | Ipg Photonics Corporation | Modular laser processing enclosure and system |
US20170182562A1 (en) * | 2012-11-08 | 2017-06-29 | Georgia Tech Research Corporation | Systems and methods for additive manufacturing and repair of metal components |
-
2018
- 2018-03-21 DE DE102018204316.7A patent/DE102018204316A1/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070057412A1 (en) * | 2005-03-23 | 2007-03-15 | 3D Systems, Inc. | Apparatus and method for aligning a removable build chamber within a process chamber |
DE102005014483A1 (en) * | 2005-03-30 | 2006-10-05 | Fockele, Matthias, Dr. | Device for manufacture of objects by layer-wise constructing from powder-form material has sub-systems of irradiating unit allocated to respective sections of building field on base arrangement |
US20150352668A1 (en) * | 2008-09-05 | 2015-12-10 | Mtt Technologies Limited | Additive manufacturing apparatus with a chamber and a removably-mountable optical module; method of preparing a laser processing apparatus with such removably-mountable optical module |
DE102012206125A1 (en) * | 2012-04-13 | 2013-10-17 | MTU Aero Engines AG | Process for the production of low-pressure turbine blades made of TiAl |
US20170182562A1 (en) * | 2012-11-08 | 2017-06-29 | Georgia Tech Research Corporation | Systems and methods for additive manufacturing and repair of metal components |
US20160288266A1 (en) * | 2013-11-14 | 2016-10-06 | General Electric Company | Layered manufacturing of single crystal alloy components |
WO2017079409A1 (en) * | 2015-11-06 | 2017-05-11 | Ipg Photonics Corporation | Modular laser processing enclosure and system |
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R163 | Identified publications notified | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |