DE102015010388A1 - Process for producing an impeller for a turbomachine by additive laser deposition melting - Google Patents
Process for producing an impeller for a turbomachine by additive laser deposition melting Download PDFInfo
- Publication number
- DE102015010388A1 DE102015010388A1 DE102015010388.1A DE102015010388A DE102015010388A1 DE 102015010388 A1 DE102015010388 A1 DE 102015010388A1 DE 102015010388 A DE102015010388 A DE 102015010388A DE 102015010388 A1 DE102015010388 A1 DE 102015010388A1
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- DE
- Germany
- Prior art keywords
- impeller
- supports
- boundary walls
- laser deposition
- turbomachine
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/009—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine components other than turbine blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/40—Structures for supporting workpieces or articles during manufacture and removed afterwards
- B22F10/47—Structures for supporting workpieces or articles during manufacture and removed afterwards characterised by structural features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/30—Platforms or substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/60—Planarisation devices; Compression devices
- B22F12/67—Blades
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- 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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/006—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine wheels
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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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
-
- 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
- F01D5/04—Blade-carrying members, e.g. rotors for radial-flow machines or engines
- F01D5/043—Blade-carrying members, e.g. rotors for radial-flow machines or engines of the axial inlet- radial outlet, or vice versa, type
- F01D5/048—Form or construction
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- 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
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- 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
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
- Powder Metallurgy (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zur Herstellung eines Laufrades für eine Strömungsmaschine durch additives Laserauftragsschmelzen oder -sintern von auf eine Bauplattform aufgetragenen Pulverschichten, das einen einen Laufschaufelkranz mit unter einem Winkel von größer 45° verlaufenden Begrenzungswänden umfassenden Schaufelbereich sowie ein an dessen Ober- und Unterseite ausgebildetes Ober- und Unterteil aufweist. In einem ersten Verfahrensschritt wird auf der Bauplattform (8) nur ein den Schaufelbereich umfassendes Mittelteil (2) in einer mit gleichzeitig aufgebauten Stützen (10) gehaltenen Schräglage, in der die Begrenzungswände in einem Winkel < 45° zur Vertikalen verlaufen, additiv gefertigt. Nach Entfernung der Stützen (10) wird in einem zweiten Verfahrensschritt in einer waagerechten Lage des Mittelteils auf der Bauplattform auf der Oberseite des Mittelteils das Oberteil und in einem dritten Verfahrensschritt nach einem Wenden des mit dem angeformten Oberteil ausgebildeten Mittelteils auf dessen Unterfläche (9) das Unterteil aufgebaut.The invention relates to a method for producing an impeller for a turbomachine by means of additive laser deposition melting or sintering of powder layers applied to a building platform, comprising a blade area comprising a blade ring with boundary walls extending at an angle of greater than 45 ° and a top and bottom formed on the latter Upper and lower part has. In a first method step, only one central part (2) comprising the blade area is made additive on the building platform (8) in an inclined position held with supports (10) in which the boundary walls extend at an angle of <45 ° to the vertical. After removal of the supports (10) in a second step in a horizontal position of the central part on the platform on the upper side of the middle part, the upper part and in a third step after turning the formed with the molded upper part center on the lower surface (9) Lower part constructed.
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Laufrades für eine Strömungsmaschine durch additives Laserauftragsschmelzen oder -sintern von auf eine Bauplattform aufgetragenen Pulverschichten, das einen einen Laufschaufelkranz mit unter einem Winkel von größer 45° verlaufenden Begrenzungswänden umfassenden Schaufelbereich sowie ein an dessen Ober- und Unterseite ausgebildetes Ober- und Unterteil aufweist.The invention relates to a method for producing an impeller for a turbomachine by means of additive laser deposition melting or sintering of powder layers applied to a building platform, comprising a blade area comprising a blade ring with boundary walls extending at an angle of greater than 45 ° and a top and bottom formed on the latter Upper and lower part has.
Das selektive Lasersintern oder -schmelzen, wie zum Beispiel das Mikro-Laserauftragsschmelzen oder -auftragsschweißen, ist ein generatives Schichtbauverfahren zur schichtweisen Herstellung dreidimensionaler Strukturen aus einem pulverförmigen Ausgangsstoff, der in einer Vielzahl von dünnen Schichten auf einen in einer Pulverkammer absenkbaren Hubtisch aufgetragen wird. Auf einer auf dem Hubtisch angeordneten Bauplattform wird unter der Wirkung von Laserstrahlen in jeder Pulverschicht ein der Kontur des betreffenden dreidimensionalen Bauteils entsprechender Bereich aufgeschmolzen und so das gewünschte Bauteil Schicht für Schicht aufgebaut. Der schichtweise Aufbau komplizierter geometrischer Strukturen, wie zum Beispiel das den Laufschaufelbereich eines Turbinenlaufrades umfassende Mittelteil, bereitet insofern Schwierigkeiten als von der Vertikalen in einem Winkel von mehr als 45° auskragende dünne Wandabschnitte, hier die Begrenzungswände für den Schaufelkranz, mithilfe von im Fertigungsprozess gleichzeitig aufgebauten Stützen gehalten werden müssen, die später mit herkömmlichen spangebenden Bearbeitungsschritten wieder entfernt werden. Die im Innern eines Laufrades im Schaufelbereich vorhandenen Stützen der in einem Winkel von größer 45° verlaufenden Begrenzungswände können jedoch nur mit erheblichem Aufwand und in einer zudem unzureichenden, nicht strömungsgünstig ausgebildeten Oberflächenqualität entfernt werden.Selective laser sintering or melting, such as micro-laser deposition or overlay welding, is a generative layer-building process for layering three-dimensional structures from a powder precursor deposited in a plurality of thin layers on a lift table lowerable in a powder chamber. On a platform arranged on the lifting platform, a region corresponding to the contour of the relevant three-dimensional component is melted under the action of laser beams in each powder layer, thus building up the desired component layer by layer. The layered construction of complicated geometric structures, such as the center section comprising the blade area of a turbine runner, presents difficulties in that thin wall sections projecting from the vertical at an angle of more than 45 °, in this case the boundary walls for the blade ring, are constructed simultaneously using the manufacturing process Supports must be kept, which are later removed again with conventional cutting operations. However, existing in the interior of an impeller in the blade area supports the running at an angle of greater than 45 ° boundary walls can be removed only with considerable effort and in addition also inadequate, not aerodynamically designed surface quality.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung eines Laufrades der eingangs erwähnten Art für eine Strömungsmaschine durch additives Laserauftragsschmelzen oder -sintern von auf eine Bauplattform aufgetragenen Pulverschichten anzugeben, das mit geringem Aufwand gefertigt werden kann und eine glatte, strömungsgünstige Oberflächenausbildung im Strömungsbereich gewährleistet.The invention has for its object to provide a method for producing an impeller of the type mentioned for a turbomachine by additive Laserauftragsschmelzen or -sintern of applied to a build platform powder layers, which can be manufactured with little effort and ensures a smooth, aerodynamic surface formation in the flow area ,
Erfindungsgemäß wird die Aufgabe mit einem Verfahren gemäß den Merkmalen des Patentanspruchs 1 gelöst.According to the invention the object is achieved by a method according to the features of patent claim 1.
Vorteilhafte und zweckmäßige Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous and expedient developments of the invention are the subject of the dependent claims.
Bei der Herstellung eines Laufrades für eine Strömungsmaschine durch additives Laserauftragsschmelzen oder -sintern von auf eine Bauplattform aufgetragenen Pulverschichten, das einen einen Laufschaufelkranz mit unter einem Winkel von größer 45° verlaufenden Begrenzungswänden umfassenden Schaufelbereich sowie ein an dessen Ober- und Unterseite ausgebildetes Ober- und Unterteil aufweist, wird erfindungsgemäß zunächst nur ein den Schaufelbereich umfassendes Mittelteil in einer mit gleichzeitig aufgebauten Stützen gehaltenen Schräglage, in der die Begrenzungswände in einem Winkel < 45° zur Vertikalen verlaufen, additiv gefertigt. Nach Entfernung der Stützen wird in einer waagerechten Lage des Mittelteils auf der Bauplattform auf der Oberseite des Mittelteils das Oberteil und nach einem Wenden des mit dem angeformten Oberteil ausgebildeten Mittelteils auf dessen Unterfläche das Unterteil aufgebaut.In the manufacture of an impeller for a turbomachine by additive laser deposition melting or sintering applied to a construction platform powder layers, the one comprising a blade ring with at an angle greater than 45 ° extending boundary walls blade area and formed on the top and bottom of the upper and lower part According to the invention, only one central part, comprising the blade area, in an inclined position held at the same time with supports in which the boundary walls extend at an angle of <45 ° to the vertical is produced additively. After removal of the supports, the upper part is constructed in a horizontal position of the middle part on the construction platform on the upper side of the middle part and, after a turning of the formed with the molded upper part middle part on the lower surface of the lower part.
Gemäß einem weiteren Merkmal der Erfindung wird beim Aufbau des Mittelteils in der Schräglage an die Außenumfangskanten der Begrenzungswände ein umlaufender Stützring angeformt, der bei der ohnehin erforderlichen spanenden Fertigbearbeitung des Laufrads wieder entfernt wird.According to a further feature of the invention, a circumferential support ring is formed during the construction of the central part in the inclined position to the outer peripheral edges of the boundary walls, which is removed in the already required machining finishing of the impeller again.
Mit dem Verfahren können Laufräder für Strömungsmaschinen, aber auch andere Bauteile mit üblicherweise abzustützenden Bereichen auf einfache Art ohne innere, schwer zugängliche und aufwändig wieder entfernbare Abstützung in hoher Oberflächenqualität durch Laserauftragsschmelzen oder -sintern additiv gefertigt werden.With the method impellers for turbomachinery, but also other components usually with areas to be supported in a simple way without inner, difficult to access and consuming again removable support in high surface quality by laser deposition melting or sintering additive be made.
Ein Ausführungsbeispiel der Erfindung wird anhand der Zeichnung näher erläutert. Es zeigen:An embodiment of the invention will be explained in more detail with reference to the drawing. Show it:
Wie die
In der in
Im ersten Verfahrensschritt wird auf der Bauplattform
Nach dem Entfernen der Stützen
Im anschließenden dritten Verfahrensschritt wird das aus dem Mittel- und Oberteil bestehende Bauteil um 180° gedreht und mit dem Oberteil
Von dem ohnehin zu bearbeitenden Umfangsrand des Laufrades
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- LaufradWheel
- 22
-
Mittelteil von
1 Middle part of1 - 33
-
Oberteil von
1 Top of1 - 44
-
Unterteil von
1 Lower part of1 - 55
-
Schaufeln, Schaufelkranz von
2 Shovels, paddle wreath of2 - 66
-
obere Begrenzungswand von
5 upper boundary wall of5 - 77
-
untere Begrenzungswand von
5 lower boundary wall of5 - 88th
- Bauplattformbuilding platform
- 99
-
Unterfläche von
2 Lower surface of2 - 1010
- StützenSupport
- 1111
- Stützringsupport ring
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102015010388.1A DE102015010388A1 (en) | 2015-08-08 | 2015-08-08 | Process for producing an impeller for a turbomachine by additive laser deposition melting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015010388.1A DE102015010388A1 (en) | 2015-08-08 | 2015-08-08 | Process for producing an impeller for a turbomachine by additive laser deposition melting |
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DE102015010388A1 true DE102015010388A1 (en) | 2017-02-09 |
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DE102015010388.1A Pending DE102015010388A1 (en) | 2015-08-08 | 2015-08-08 | Process for producing an impeller for a turbomachine by additive laser deposition melting |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109175369A (en) * | 2018-10-30 | 2019-01-11 | 首都航天机械有限公司 | A kind of metal winding pipe selective laser fusing manufacturing process |
WO2019180365A1 (en) * | 2018-03-23 | 2019-09-26 | Safran Aircraft Engines | Bearing support for an aircraft engine manufactured by additive manufacturing |
CN110769953A (en) * | 2017-05-19 | 2020-02-07 | 赛峰飞机发动机公司 | Method of making aircraft turbine blades using additive manufacturing techniques |
WO2020162380A1 (en) * | 2019-02-06 | 2020-08-13 | 株式会社荏原製作所 | Impeller manufacturing method, impeller, impeller design method, impeller design system, and impeller manufacturing system |
JP2020125732A (en) * | 2019-02-06 | 2020-08-20 | 株式会社荏原製作所 | Manufacturing method for impeller and impeller |
JP2020125733A (en) * | 2019-02-06 | 2020-08-20 | 株式会社荏原製作所 | Manufacturing method for impeller and impeller |
JP2020125734A (en) * | 2019-02-06 | 2020-08-20 | 株式会社荏原製作所 | Design method for impeller, manufacturing method for impeller, design system for impeller, and manufacturing system for impeller |
EP3715022A1 (en) * | 2019-03-29 | 2020-09-30 | KSB SE & Co. KGaA | Process and apparatus for additive manufacturing a component |
Citations (3)
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EP2746589A2 (en) * | 2012-12-18 | 2014-06-25 | Hamilton Sundstrand Corporation | Additively manufactured impeller |
GB2520596A (en) * | 2013-09-19 | 2015-05-27 | 3T Rpd Ltd | Manufacturing method |
WO2015088852A1 (en) * | 2013-12-13 | 2015-06-18 | United Technologies Corporation | Additive manufacturing shroud support structure |
-
2015
- 2015-08-08 DE DE102015010388.1A patent/DE102015010388A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2746589A2 (en) * | 2012-12-18 | 2014-06-25 | Hamilton Sundstrand Corporation | Additively manufactured impeller |
GB2520596A (en) * | 2013-09-19 | 2015-05-27 | 3T Rpd Ltd | Manufacturing method |
WO2015088852A1 (en) * | 2013-12-13 | 2015-06-18 | United Technologies Corporation | Additive manufacturing shroud support structure |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110769953A (en) * | 2017-05-19 | 2020-02-07 | 赛峰飞机发动机公司 | Method of making aircraft turbine blades using additive manufacturing techniques |
CN110769953B (en) * | 2017-05-19 | 2022-04-12 | 赛峰飞机发动机公司 | Method of making aircraft turbine blades using additive manufacturing techniques |
WO2019180365A1 (en) * | 2018-03-23 | 2019-09-26 | Safran Aircraft Engines | Bearing support for an aircraft engine manufactured by additive manufacturing |
FR3079153A1 (en) * | 2018-03-23 | 2019-09-27 | Safran Aircraft Engines | BEARING SUPPORT FOR AN AIRCRAFT ENGINE MANUFACTURED BY ADDITIVE MANUFACTURING |
CN111902610A (en) * | 2018-03-23 | 2020-11-06 | 赛峰飞机发动机公司 | Bearing support for an aircraft engine made by additive manufacturing |
US11408303B2 (en) | 2018-03-23 | 2022-08-09 | Safran Aircraft Engines | Bearing support for an aircraft engine manufactured by additive manufacturing |
CN109175369A (en) * | 2018-10-30 | 2019-01-11 | 首都航天机械有限公司 | A kind of metal winding pipe selective laser fusing manufacturing process |
WO2020162380A1 (en) * | 2019-02-06 | 2020-08-13 | 株式会社荏原製作所 | Impeller manufacturing method, impeller, impeller design method, impeller design system, and impeller manufacturing system |
JP2020125732A (en) * | 2019-02-06 | 2020-08-20 | 株式会社荏原製作所 | Manufacturing method for impeller and impeller |
JP2020125733A (en) * | 2019-02-06 | 2020-08-20 | 株式会社荏原製作所 | Manufacturing method for impeller and impeller |
JP2020125734A (en) * | 2019-02-06 | 2020-08-20 | 株式会社荏原製作所 | Design method for impeller, manufacturing method for impeller, design system for impeller, and manufacturing system for impeller |
EP3715022A1 (en) * | 2019-03-29 | 2020-09-30 | KSB SE & Co. KGaA | Process and apparatus for additive manufacturing a component |
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