DE102016205930A1 - Remelting with simultaneous creation of a pressure ring zone - Google Patents
Remelting with simultaneous creation of a pressure ring zone Download PDFInfo
- Publication number
- DE102016205930A1 DE102016205930A1 DE102016205930.0A DE102016205930A DE102016205930A1 DE 102016205930 A1 DE102016205930 A1 DE 102016205930A1 DE 102016205930 A DE102016205930 A DE 102016205930A DE 102016205930 A1 DE102016205930 A1 DE 102016205930A1
- Authority
- DE
- Germany
- Prior art keywords
- zone
- outer ring
- remelting
- ring zone
- inner zone
- 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
-
- 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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
-
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0626—Energy control of the laser beam
-
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/073—Shaping the laser spot
- B23K26/0734—Shaping the laser spot into an annular shape
-
- 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
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/354—Working by laser beam, e.g. welding, cutting or boring for surface treatment by melting
-
- 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
-
- 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
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
- B23P6/045—Repairing fractures or cracked metal parts or products, e.g. castings of turbine components, e.g. moving or stationary blades, rotors, etc.
-
- 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
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
- B23K2103/26—Alloys of Nickel and Cobalt and Chromium
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
Abstract
Durch die ringförmige Umschließung eines Energiestrahls, der zum Umschmelzen verwendet wird, werden Druckspannungen zwischen dem äußeren Ring (26) und der inneren Zone (20) erzeugt, die dazu führen, dass eine rissfreie Umschmelzung stattfindet.The annular enclosure of an energy beam used for remelting creates compressive stresses between the outer ring (26) and the inner zone (20) which result in crack-free remelting.
Description
Die Erfindung betrifft das Umschmelzen von Rissen, insbesondere eines metallischen Substrats, wobei zur Erzeugung einer Druckspannung eine Druckringzone gleichzeitig mit erzeugt wird. The invention relates to the remelting of cracks, in particular of a metallic substrate, wherein a pressure ring zone is generated simultaneously with the generation of a compressive stress.
Die Erfindung betrifft die Erweiterung des Anwendungsbereiches des Auftragschweißens zur generativen Fertigung und Reparatur insbesondere von Heißgaskomponenten aus schwer schweißbaren Nickelbasis-Superlegierungen. Beim sogenannten Laser Rastering Process wurden bisher vielversprechende Ergebnisse zum Laserstrahl-Auftragschweißen von schwer schweißbaren Nickelbasis-Superlegierungen mit großem Anteil an intermetallischer Phase erzielt. The invention relates to the extension of the field of application of surfacing for the generative production and repair, in particular of hot gas components made of hard-to-weld nickel-base superalloys. In the so-called Laser Rastering Process, promising results have been achieved to date for laser-beam build-up welding of hard-to-weld nickel-based superalloys with a high proportion of intermetallic phase.
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 ein Verfahren gemäß Anspruch 1 und eine Vorrichtung gemäß Anspruch 2. The object is achieved by a method according to claim 1 and a device according to
In den Unteransprüchen sind weitere vorteilhafte Maßnahmen aufgelistet, die beliebig miteinander kombiniert werden können, um weitere Vorteile zu erzielen. In the dependent claims further advantageous measures are listed, which can be combined with each other in order to achieve further advantages.
Die bestehende Anlagentechnik könnte für einen Laserstrahl-Umschmelzprozess zur Schließung von Rissen oder zur gezielten Einbringung einer richtungsabhängigen lokalen Kornstruktur zur lokalen Verbesserung der thermo-mechanischen Eigenschaften eingesetzt werden. The existing plant technology could be used for a laser beam remelting process to close cracks or for the targeted introduction of a direction-dependent local grain structure for the local improvement of the thermo-mechanical properties.
Die Figuren und die Beschreibung stellen nur Ausführungsbeispiele der Erfindung dar. The figures and the description represent only embodiments of the invention.
Es zeigen Show it
Mit vorhandener Scannertechnologie kann aufgrund der sehr schnellen Ablenkung von Laserstrahlung (3 m/s) ein Umschmelzprozess zur Rissschließung an Oberflächen von Turbinenschaufeln oder lokalen Verbesserung der thermo-mechanischen Eigenschaften erzielt werden. Dabei können durch die schnelle Ablenkung zwei verschiedene, insbesondere kreis- oder ringförmige Zonen mit unterschiedlicher Temperaturverteilung nahezu gleichzeitig erzeugt werden. Die Laserstrahlung wird in einer inneren Zone mit großer Laserleistung verfahren, so dass ein schmelzflüssiger Bereich erzielt wird. With existing scanner technology, a remelting process can be achieved for crack closure on turbine blade surfaces or local improvement of thermo-mechanical properties due to the very fast deflection of laser radiation (3 m / s). In this case, two different, in particular circular or annular zones with different temperature distribution can be generated almost simultaneously by the rapid deflection. The laser radiation is moved in an inner zone with high laser power, so that a molten area is achieved.
Um diese innere Zone wird eine äußere Ringzone abgescannt. Diese äußere Ringzone wird auf eine definierte Temperatur vorgewärmt, so dass schmelzflüssige Phasen vermieden werden. Die beiden abgescannten Zonen sind dabei vorzugsweise viel größer als der Laserstrahldurchmesser auf der Werkstückoberfläche. An outer ring zone is scanned around this inner zone. This outer annular zone is preheated to a defined temperature, so that molten phases are avoided. The two scanned zones are preferably much larger than the laser beam diameter on the workpiece surface.
Die beiden Zonen (innere Zone und äußere Ringzone) werden dabei vorzugsweise konzentrisch zueinander über die Oberfläche des Bauteils verfahren. Durch die schmelzflüssige innere Zone werden Bereiche mit Rissen umgeschmolzen, so dass die oberflächennahen, nicht durchgehenden Risse verschlossen werden. The two zones (inner zone and outer ring zone) are preferably moved concentrically with each other over the surface of the component. Due to the molten inner zone areas with cracks are remelted, so that the near-surface, non-continuous cracks are closed.
Alternativ kann ein solcher Prozess zur gezielten Einbringung einer richtungsabhängigen lokalen Kornstruktur eingesetzt werden. Dadurch werden lokal die thermo-mechanischen Eigenschaften in der Heißgaskomponente verbessert. Alternatively, such a process can be used for the targeted introduction of a direction-dependent local grain structure. This improves locally the thermo-mechanical properties in the hot gas component.
Durch den nicht schmelzflüssigen äußere Ring werden Eigenspannungen um das Schmelzbad im Inneren herum induziert, so dass mögliche Heißrisse im Übergangsbereich Schmelzbad und Grundwerkstoff vermieden („zugedrückt“) werden. The non-molten outer ring induces internal stresses around the molten bath in the interior, so that possible hot cracks in the transition area molten bath and base material are avoided ("pressed").
Vorteile sind die Ermöglichung zu Reparaturverfahren für Turbinenschaufeln aus schwer schweißbaren Nickelbasis-Superlegierungen, so dass artgleiche, strukturelle Reparaturen möglich sind sowie eine lokale Verbesserung der thermo-mechanischen Eigenschaften. Advantages are the ability to repair turbine blades made of hard-to-weld nickel-base superalloys, so that similar structural repairs are possible as well as a local improvement of the thermo-mechanical properties.
In
Dies erfolgt mittels eines Energiestrahls
Das Verfahren kann insbesondere bei Turbinenschaufeln, Turbinenbauteilen, insbesondere auch bei nickel- oder kobaltbasierten Superlegierungen, angewendet werden. The method can be used in particular for turbine blades, turbine components, in particular also for nickel- or cobalt-based superalloys.
In
Der Unterschied der Laserleistung beträgt vorzugsweise mindestens 20%, insbesondere mindestens 40%. Die äußere Ringzone
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016205930.0A DE102016205930A1 (en) | 2016-04-08 | 2016-04-08 | Remelting with simultaneous creation of a pressure ring zone |
PCT/EP2017/055659 WO2017174293A1 (en) | 2016-04-08 | 2017-03-10 | Remelting of cracks or defects with simultaneous generation of a pressure ring zone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016205930.0A DE102016205930A1 (en) | 2016-04-08 | 2016-04-08 | Remelting with simultaneous creation of a pressure ring zone |
Publications (1)
Publication Number | Publication Date |
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DE102016205930A1 true DE102016205930A1 (en) | 2017-10-12 |
Family
ID=58277279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102016205930.0A Withdrawn DE102016205930A1 (en) | 2016-04-08 | 2016-04-08 | Remelting with simultaneous creation of a pressure ring zone |
Country Status (2)
Country | Link |
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DE (1) | DE102016205930A1 (en) |
WO (1) | WO2017174293A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020088784A1 (en) * | 2000-12-13 | 2002-07-11 | Christophe Bertez | Method and plant for laser cutting with dual-flow and double-focus cutting head |
DE10108958A1 (en) * | 2001-02-19 | 2002-09-12 | Arzneimittelgesellschaft Mit B | Device and method for manufacturing a syringe for medical purposes |
US20060219673A1 (en) * | 2003-12-05 | 2006-10-05 | Spi Lasers Uk Ltd | Apparatus for the industrial processing of a material by optical radiation |
EP2774713A1 (en) * | 2013-03-07 | 2014-09-10 | Siemens Aktiengesellschaft | Laser method with different laser beam areas within a beam and devices |
EP2774712A1 (en) * | 2013-03-07 | 2014-09-10 | Siemens Aktiengesellschaft | Laser method with different laser beam areas within a beam |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6120725A (en) * | 1997-07-25 | 2000-09-19 | Matsushita Electric Works, Ltd. | Method of forming a complex profile of uneven depressions in the surface of a workpiece by energy beam ablation |
DE102010003750A1 (en) * | 2010-04-08 | 2011-10-13 | Trumpf Laser- Und Systemtechnik Gmbh | Method and arrangement for changing the beam profile characteristic of a laser beam by means of a multiple-clad fiber |
CN103418913A (en) * | 2013-08-13 | 2013-12-04 | 中国航空工业集团公司北京航空制造工程研究所 | Device for machining small hole by using ultrashort pulse laser and small hole machining method |
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2016
- 2016-04-08 DE DE102016205930.0A patent/DE102016205930A1/en not_active Withdrawn
-
2017
- 2017-03-10 WO PCT/EP2017/055659 patent/WO2017174293A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020088784A1 (en) * | 2000-12-13 | 2002-07-11 | Christophe Bertez | Method and plant for laser cutting with dual-flow and double-focus cutting head |
DE10108958A1 (en) * | 2001-02-19 | 2002-09-12 | Arzneimittelgesellschaft Mit B | Device and method for manufacturing a syringe for medical purposes |
US20060219673A1 (en) * | 2003-12-05 | 2006-10-05 | Spi Lasers Uk Ltd | Apparatus for the industrial processing of a material by optical radiation |
EP2774713A1 (en) * | 2013-03-07 | 2014-09-10 | Siemens Aktiengesellschaft | Laser method with different laser beam areas within a beam and devices |
EP2774712A1 (en) * | 2013-03-07 | 2014-09-10 | Siemens Aktiengesellschaft | Laser method with different laser beam areas within a beam |
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Publication number | Publication date |
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WO2017174293A1 (en) | 2017-10-12 |
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Legal Events
Date | Code | Title | Description |
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R163 | Identified publications notified | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |