EP1027943A1 - Hohlgegossenes Bauteil und Verfahren zu dessen Herstellung - Google Patents
Hohlgegossenes Bauteil und Verfahren zu dessen Herstellung Download PDFInfo
- Publication number
- EP1027943A1 EP1027943A1 EP00810097A EP00810097A EP1027943A1 EP 1027943 A1 EP1027943 A1 EP 1027943A1 EP 00810097 A EP00810097 A EP 00810097A EP 00810097 A EP00810097 A EP 00810097A EP 1027943 A1 EP1027943 A1 EP 1027943A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- closure piece
- recess
- casting
- component
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/12—Accessories
- B22C21/14—Accessories for reinforcing or securing moulding materials or cores, e.g. gaggers, chaplets, pins, bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
- Y10S415/915—Pump or portion thereof by casting or molding
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49718—Repairing
- Y10T29/49732—Repairing by attaching repair preform, e.g., remaking, restoring, or patching
- Y10T29/49742—Metallurgically attaching preform
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49718—Repairing
- Y10T29/49732—Repairing by attaching repair preform, e.g., remaking, restoring, or patching
- Y10T29/49744—Screw threaded preform
Definitions
- the present invention relates to a hollow cast component, which component encloses at least one cavity, and which component of at least a manufacturing-related core opening is broken, and at least a core opening is closed by means of a closure piece.
- openings are created in the casting Component walls. In many cases, these openings are for component function not, or not necessary to the extent available. On the contrary Excessively large and many such core openings mostly undesirable because they on the one hand weaken the mechanical strength of the components, in particular but also represent undesirable leakage points.
- Closure piece when brushing a blade against the housing or one Guide blade on rotor elements are separated.
- the core openings cannot can be dispensed with without drastically increasing casting tolerances take and the freedom of the designer in designing the cavities - and thus drastically restrict the design of the component cooling.
- the aim of the invention is in one hollow cast component, which component has at least one cavity encloses, and which component of at least one production-related Core opening is broken, and wherein at least one core opening by means of a closure piece is closed, the closure of the core openings to be indicated in such a way that the disadvantages described above are avoided.
- the component has at least one of has externally accessible recess, such that a penetration the recess (15) with the surface of the casting a closed line represents that the recess within the component the at least one closed core opening completely covered, and that the Closure piece is arranged in the recess
- the essence of the invention is therefore to close the closure piece into the interior of the casting put. It lies in a recess that the closure piece in Direction of two spatial axes. So one has to additional fixation made only in the direction of an axis of movement become. If the closure piece when using the cast component in one technical system, for example, pressure differences or centrifugal forces has to accommodate, the recess is advantageously in the component introduced that the direction in which an additional fixation of the Closure piece is necessary, as normal as possible to the predominantly occurring Force component lies. The locking piece then only has to be against Slipping in the recess can be secured. Because of this measure the fastening of the closure piece is significantly less stressed than in the state-of-the-art solution. Already due this fact makes the functional reliability of the closure one Core opening increased drastically.
- the closure piece which is inserted in the recess, can Seal the core opening hermetically, or a defined one Leave the flow cross-section between the cavity and the core opening, which can be useful for cooling purposes, for example.
- the latter can be achieved by either closing the core opening not completely covered, or by adding a defined opening in the Closure piece is incorporated.
- a preferred location for attaching the closure piece or the Recess is right at the transition from the cavity to the casting includes, to the core opening.
- the recess and the closure piece can have almost any shape.
- the geometry of the closure piece must of course be adapted to that of the recess. So can the recess a cast in the casting or by machining made slot in the casting that is transverse to the core opening is oriented, and in which a flat plate is used as a closure piece is.
- a pin can also be inserted into a cylindrical or conical bore his.
- the The blank is cast in a known manner. Because of the possibility of doing this The resulting core openings can be reliably closed later Core supports are generously dimensioned, which improves the manufacturing accuracy in the Casting process significantly improved.
- the recess can already be in the Blank are provided, which is successive post-processing steps simplified or spared. By machining using a End mill or drill can cut the recess to dimensional accuracy be reworked; where there is no recess in the cast blank, this must be introduced subsequently.
- the editing can naturally also by other methods, for example eroding, respectively; the selection of the processing method is otherwise not essential to the invention.
- the locking piece is then inserted into the recess used and attached there.
- the closure piece of the The geometry of the recess can be adapted.
- Attachment of the closure piece can be done in different ways. So is further fastening the closure piece by soldering or Welding possible, the joints, as stated above, essential are less heavily loaded.
- the closure piece could be oversized executed and under temperature difference in the recess of the casting be pressed in, or an elastic expansion pin can be inserted to achieve a frictional connection. After all, it can Locking piece can also be screwed in as a round bolt with thread, or the closure piece is caulked to the casting, which is a positive connection results.
- the selection of the Fastening procedure in the specific case of the expected temperature, the Materials and the available manufacturing methods and Unhook tools.
- the method described is particularly suitable for the production of cooled gas turbine blades. Inside are these blades Cavities that are essentially from the blade root to the blade head run, and through which cooling air flows during operation.
- This Cooling air ducts generally have sophisticated complexes Geometries that are to be produced with great accuracy during casting. This high accuracy requires stable bilateral support of the Cast cores; therefore generously dimensioned core supports are on Bucket head and blade foot required. So there are in the blank Core openings on both the head and foot, at least one of which Part must be sealed to prevent the loss of cooling air through this to prevent through.
- the procedure for closing the core openings such as it is known from the prior art, this can cause considerable problems cause.
- the single figure shows the head area in a very simplified representation a cooled hollow cast gas turbine blade, at the core openings are designed lockable according to the invention.
- the head area is one in the single figure Gas turbine blade shown as an example of a hollow cast component. Cavities 12 are located within this blade, which are separated by a web 17 separated from one another and outwards from walls 11 of the casting are delimited.
- the internal structure of the casting shown here is not as to be considered representative, and is also not the subject of the invention.
- the cavities were made Store and remove cores in the mold. To stabilize the The core was the core storage and thus to increase the casting accuracy supported on the blade head by two core supports, which in the casting form the Have left core openings 13, which must be closed. For this purpose, there are recesses 15 in the casting, which cover one core opening each.
- the recesses are completely in the casting is incorporated in such a way that its penetration line 16 with the component surface represents a closed line.
- Matching Closure pieces 14 are in the game with little play or excess Cutouts inserted as indicated by the arrows, and on there appropriately attached.
- the locking pieces only have to be in one direction of movement, namely in their direction Installation direction, secured against slipping.
- the installation direction can be chosen so that it is the direction of the lowest load acts. For example, if the turbine blade shown is a Is a bucket, so there is predominantly one in this drawing centrifugal force acting on the locking pieces. But since these are in one are installed essentially perpendicular to this force, the attachment does not have to bear the centrifugal force, it becomes supported directly on the casting material. Thus, the joints are subject to to which the closure pieces are attached in the casting, only a small one mechanical load.
- a plate and a bolt are shown as locking pieces.
- the Recess for the bolt can be made very easily by drilling be a more complicated process for the tile required.
- the recess for the bolt must be proportionate be large, and in this way weakens the structure of the cast component in larger dimensions, which is why this solution for very large core openings is hardly practical.
- a bolt could also carry an external thread, for example, and into one Recess with internal thread are screwed in, which makes a very simple way of fastening the closure piece in the casting results.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
- 11
- Bauteilwände
- 12
- Hohlraum
- 13
- Kernöffnung
- 14
- Verschlussstück
- 15
- Aussparung
- 16
- Durchdringungslinie mit der Bauteiloberfläche
- 17
- Steg
Claims (10)
- Hohlgegossenes Bauteil, welches Bauteil wenigstens eine zu verschliessende fertigungsbedingte Kernöffnung (13) aufweist, dadurch gekennzeichnet, dass das Bauteil wenigstens eine von aussen zugängliche Aussparung (15) aufweist, welche Aussparung quer zu der zu verschliessenden Kernöffnung im Inneren und/oder an einer inneren, einen eingeschlossenen Hohlraum (12) begrenzenden, Oberfläche angeordnet ist, wobei die Aussparung (15) die zu verschliessende Kernöffnung (13) kreuzt und wenigstens teilweise überdeckt, und, dass ein Verschlussstück (14) in der Aussparung (15) angeordnet ist, welches Verschlusstück die zu verschliessende Kernöffnung verschliesst.
- Bauteil nach Anspruch 1, dadurch gekennzeichnet, dass das Verschlussstück die Kernöffnung hermetisch abschliesst.
- Bauteil nach Anspruch 1, dadurch gekennzeichnet, dass das Verschlussstück einen definierten Strömungsquerschnitt zwischen dem Hohlraum und der Kernöffnung freilässt.
- Bauteil nach einem der Ansprüche 1 bis 3, welches Bauteil als Turbinenschaufel ausgebildet ist, wobei wenigstens ein Hohlraum (12) im Inneren der Turbinenschaufel als Kühlkanal ausgebildet ist, wobei jeweils wenigstens eine Kernöffnung (13) im Bereich des Schaufelkopfes und des Schaufelfusses angeordnet und in Richtung der Schaufelhöhe orientiert ist, wobei wenigstens eine im Bereich des Schaufelkopfes angeordnete Kernöffnung (13) mittels eines Verschlussstückes (14) zu verschliessen ist, und wobei die wenigstens eine Aussparung (15) zur Aufnahme des Verschlussstücks von der Schaufelsaugseite und/oder der Schaufeldruckseite zugänglich ist.
- Verfahren zur Herstellung eines Bauteils nach einem der Ansprüche 1 bis 4, wobei der wenigstens eine Hohlraum während des Giessprozesses durch einen Gusskern gebildet wird, welcher Kern während des Giessens durch Kernstützen in der Gussform fixiert ist und nach dem Giessen durch aufgrund der Kernstützen entstandene Kernöffnungen entfernt wird, wobei wenigstens eine Kernöffnung nach dem Entfernen des Kerns durch ein Verschlussstück verschlossen wird, dadurch gekennzeichnet, dass zur Aufnahme des Verschlussstücks mindestens eine Aussparung quer zu der zu verschliessenden Kernöffnung in das Bauteil eingebracht wird, welche Aussparung die zu verschliessende Kernöffnung überdeckt, dass das Verschlussstück passend mit geringem Spiel oder mit Übermass von aussen in diese Aussparung eingesetzt wird, und dass das Verschlussstück in der Aussparung befestigt wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass das Verschlussstück stoffschlüssig in dem Gussteil fixiert wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass das Verschlussstück durch eine Klebung in dem Gussteil fixiert wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass das Verschlussstück in das Gussteil eingepresst wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass das Verschlussstück formschlüssig in dem Gussteil fixiert wird.
- Verfahren nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass das Verschlussstück nach dem Einbau über die Gussoberfläche vorsteht, und nach dem Fixieren auf der Gussaussenseite bündig verschliffen wird.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19905887 | 1999-02-11 | ||
| DE19905887A DE19905887C1 (de) | 1999-02-11 | 1999-02-11 | Hohlgegossenes Bauteil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1027943A1 true EP1027943A1 (de) | 2000-08-16 |
| EP1027943B1 EP1027943B1 (de) | 2004-09-29 |
Family
ID=7897301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00810097A Expired - Lifetime EP1027943B1 (de) | 1999-02-11 | 2000-02-04 | Hohlgegossenes Bauteil und Verfahren zu dessen Herstellung |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US6193468B1 (de) |
| EP (1) | EP1027943B1 (de) |
| JP (1) | JP4416252B2 (de) |
| DE (2) | DE19905887C1 (de) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1188500A1 (de) * | 2000-09-14 | 2002-03-20 | Siemens Aktiengesellschaft | Vorrichtung und Verfahren zur Herstellung einer Schaufel für eine Turbine sowie entsprechend hergestellte Schaufel |
| EP1247602A1 (de) * | 2001-04-04 | 2002-10-09 | Siemens Aktiengesellschaft | Verfahren zur Herstellung einer Turbinenschaufel |
| US7057132B2 (en) | 2000-12-27 | 2006-06-06 | Siemens Aktiengesellschaft | Method for laser welding a workpiece |
| WO2009112400A1 (de) * | 2008-03-11 | 2009-09-17 | Alstom Technology Ltd | Hohlgegossenes gussteil |
| EP2257399A1 (de) * | 2008-03-31 | 2010-12-08 | ALSTOM Technology Ltd | Schaufel für eine gasturbine |
| WO2015139945A1 (de) * | 2014-03-17 | 2015-09-24 | Siemens Aktiengesellschaft | Verfahren zum verschliessen eines loches und bauteil |
| CN105344975A (zh) * | 2015-11-26 | 2016-02-24 | 沈阳黎明航空发动机(集团)有限责任公司 | 一种导向叶片基准转换夹具及基准转换方法 |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6883700B2 (en) * | 2002-09-26 | 2005-04-26 | Siemens Westinghouse Power Corporation | Turbine blade closure system |
| US7001150B2 (en) * | 2003-10-16 | 2006-02-21 | Pratt & Whitney Canada Corp. | Hollow turbine blade stiffening |
| GB2430170B (en) * | 2005-09-15 | 2008-05-07 | Rolls Royce Plc | Method of forming a cast component |
| US7322396B2 (en) * | 2005-10-14 | 2008-01-29 | General Electric Company | Weld closure of through-holes in a nickel-base superalloy hollow airfoil |
| US7761989B2 (en) * | 2005-11-22 | 2010-07-27 | United Technologies Corporation | Methods for repairing gas turbine engine components |
| US20090165988A1 (en) * | 2007-12-31 | 2009-07-02 | General Electric Company | Turbine airfoil casting method |
| US20100180599A1 (en) * | 2009-01-21 | 2010-07-22 | Thomas Stephen R | Insertable Pre-Drilled Swirl Vane for Premixing Fuel Nozzle |
| US20110277866A1 (en) * | 2010-05-13 | 2011-11-17 | Advanced Drainage Systems, Inc. | Apparatus and Method For Sealing A Ventilation Channel of A Pipe |
| CN104501381B (zh) * | 2014-12-02 | 2017-06-16 | 广东美的制冷设备有限公司 | 空调室外机及其出风格栅 |
| US10053989B2 (en) * | 2015-12-21 | 2018-08-21 | General Electric Company | Cooling circuit for a multi-wall blade |
| US11111815B2 (en) | 2018-10-16 | 2021-09-07 | General Electric Company | Frangible gas turbine engine airfoil with fusion cavities |
| US11149558B2 (en) | 2018-10-16 | 2021-10-19 | General Electric Company | Frangible gas turbine engine airfoil with layup change |
| US10746045B2 (en) | 2018-10-16 | 2020-08-18 | General Electric Company | Frangible gas turbine engine airfoil including a retaining member |
| US10760428B2 (en) | 2018-10-16 | 2020-09-01 | General Electric Company | Frangible gas turbine engine airfoil |
| US10837286B2 (en) | 2018-10-16 | 2020-11-17 | General Electric Company | Frangible gas turbine engine airfoil with chord reduction |
| US11434781B2 (en) | 2018-10-16 | 2022-09-06 | General Electric Company | Frangible gas turbine engine airfoil including an internal cavity |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2821323A (en) * | 1955-12-07 | 1958-01-28 | Lee Co | Pin plug |
| DE3936171A1 (de) * | 1989-10-31 | 1991-05-02 | Bayerische Motoren Werke Ag | Auspuffkruemmer fuer brennkraftmaschinen, insbesondere fuer otto-motore mit abgasturbo-aufladung |
| DE4434139C1 (de) * | 1994-09-24 | 1995-08-31 | Ford Werke Ag | Gußteilform mit Gießkernabstützung und Gußteil mit Kernöffnungsverschluß |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3626568A (en) * | 1969-04-23 | 1971-12-14 | Avco Corp | Method for bonding pins into holes in a hollow turbine blade |
| US3761201A (en) * | 1969-04-23 | 1973-09-25 | Avco Corp | Hollow turbine blade having diffusion bonded therein |
| DE4430489C1 (de) * | 1994-08-27 | 1995-10-26 | Porsche Ag | Rad |
| FR2695163B1 (fr) * | 1992-09-02 | 1994-10-28 | Snecma | Aube creuse pour turbomachine et son procédé de fabrication. |
| DE19647069A1 (de) * | 1996-11-14 | 1998-05-20 | Heidelberger Druckmasch Ag | Gußkörper |
-
1999
- 1999-02-11 DE DE19905887A patent/DE19905887C1/de not_active Expired - Fee Related
- 1999-07-01 US US09/345,509 patent/US6193468B1/en not_active Expired - Lifetime
-
2000
- 2000-02-04 DE DE50007947T patent/DE50007947D1/de not_active Expired - Lifetime
- 2000-02-04 EP EP00810097A patent/EP1027943B1/de not_active Expired - Lifetime
- 2000-02-14 JP JP2000035980A patent/JP4416252B2/ja not_active Expired - Fee Related
- 2000-08-29 US US09/650,407 patent/US6516865B1/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2821323A (en) * | 1955-12-07 | 1958-01-28 | Lee Co | Pin plug |
| DE3936171A1 (de) * | 1989-10-31 | 1991-05-02 | Bayerische Motoren Werke Ag | Auspuffkruemmer fuer brennkraftmaschinen, insbesondere fuer otto-motore mit abgasturbo-aufladung |
| DE4434139C1 (de) * | 1994-09-24 | 1995-08-31 | Ford Werke Ag | Gußteilform mit Gießkernabstützung und Gußteil mit Kernöffnungsverschluß |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1188500A1 (de) * | 2000-09-14 | 2002-03-20 | Siemens Aktiengesellschaft | Vorrichtung und Verfahren zur Herstellung einer Schaufel für eine Turbine sowie entsprechend hergestellte Schaufel |
| WO2002022291A1 (de) * | 2000-09-14 | 2002-03-21 | Siemens Aktiengesellschaft | Vorrichtung und verfahren zur herstellung einer schaufel für eine turbine sowie entsprechend hergestellte schaufel |
| US6805535B2 (en) | 2000-09-14 | 2004-10-19 | Siemens Aktiengesellschaft | Device and method for producing a blade for a turbine and blade produced according to this method |
| US7057132B2 (en) | 2000-12-27 | 2006-06-06 | Siemens Aktiengesellschaft | Method for laser welding a workpiece |
| EP1247602A1 (de) * | 2001-04-04 | 2002-10-09 | Siemens Aktiengesellschaft | Verfahren zur Herstellung einer Turbinenschaufel |
| WO2009112400A1 (de) * | 2008-03-11 | 2009-09-17 | Alstom Technology Ltd | Hohlgegossenes gussteil |
| US8721284B2 (en) | 2008-03-11 | 2014-05-13 | Alstom Technology Ltd. | Hollow-cast casting with a closure device |
| EP2257399A1 (de) * | 2008-03-31 | 2010-12-08 | ALSTOM Technology Ltd | Schaufel für eine gasturbine |
| WO2015139945A1 (de) * | 2014-03-17 | 2015-09-24 | Siemens Aktiengesellschaft | Verfahren zum verschliessen eines loches und bauteil |
| CN105344975A (zh) * | 2015-11-26 | 2016-02-24 | 沈阳黎明航空发动机(集团)有限责任公司 | 一种导向叶片基准转换夹具及基准转换方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19905887C1 (de) | 2000-08-24 |
| JP4416252B2 (ja) | 2010-02-17 |
| JP2000246395A (ja) | 2000-09-12 |
| US6516865B1 (en) | 2003-02-11 |
| US6193468B1 (en) | 2001-02-27 |
| DE50007947D1 (de) | 2004-11-04 |
| EP1027943B1 (de) | 2004-09-29 |
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Legal Events
| Date | Code | Title | Description |
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