EP0272631B1 - Process for coating turbine components, especially turbine blades - Google Patents
Process for coating turbine components, especially turbine blades Download PDFInfo
- Publication number
- EP0272631B1 EP0272631B1 EP87118749A EP87118749A EP0272631B1 EP 0272631 B1 EP0272631 B1 EP 0272631B1 EP 87118749 A EP87118749 A EP 87118749A EP 87118749 A EP87118749 A EP 87118749A EP 0272631 B1 EP0272631 B1 EP 0272631B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shoe
- coating
- vane
- masking
- container
- 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.)
- Expired - Lifetime
Links
- 238000000576 coating method Methods 0.000 title claims description 26
- 239000011248 coating agent Substances 0.000 title claims description 20
- 238000000034 method Methods 0.000 title description 2
- 239000000843 powder Substances 0.000 claims description 10
- 238000009792 diffusion process Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000000873 masking effect Effects 0.000 claims 4
- 239000007789 gas Substances 0.000 description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910017150 AlTi Inorganic materials 0.000 description 1
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- LDDQLRUQCUTJBB-UHFFFAOYSA-N ammonium fluoride Chemical compound [NH4+].[F-] LDDQLRUQCUTJBB-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
- C23C10/48—Aluminising
- C23C10/50—Aluminising of ferrous surfaces
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
Definitions
- the invention relates to a device according to the preamble of claim 1.
- turbo machine components e.g. Turbine blades to be provided with protective layers, in particular hot gas corrosion layers.
- the relevant components are arranged in coating boxes, into which a coating powder suitable for the respective application is introduced, from which the coating is obtained using a suitable gas and under the specified temperature effect in the diffusion process.
- local component coverage should help to limit the amount of coating required to the absolute minimum.
- the component holder also presents difficulties in order to be on the safe side with regard to local coating and covering.
- the turbine blades in a first variant are to be held between end extensions and their bases, in succession, are lined up along a common longitudinal slot in a housing support, special housing separators being required if a direct one Contact of the coating composition and the marking composition should be prevented.
- the open ends of the housing support should be able to be closed by bending.
- the rear edge of a blade to be treated or coated is to be inserted into a tubular treatment carrier via a slot-shaped opening, the blade and carrier being intended to lie together in a cover configuration (box).
- a third variant of the known case deals with the stacking and stacking of rings with wheel disks embedded between them, with assignment of the cover container configuration to wear, special wall parts from slots left between the rings, the sections (blades) to be coated protrude into the coating box.
- the invention has for its object to provide a device according to the type mentioned (preamble of claim 1), with which an operationally reliable, sealed and from structural specifications of a coating container and easy to handle local component cover is created.
- the cover shoe can be simply placed over the blade end section in such a way that the end section which is not to be coated is properly covered and is therefore not exposed to any influences from the local coating process.
- the cavity of the cover shoe in which the portion not to be coated, e.g. a blade root is arranged, is filled with a so-called “covering powder", in particular made of aluminum oxide (Al2O3); the covering powder represents a sealing packing which protects the blade root from coating gases.
- a special filling opening for the covering powder on the shoe must be closed before the coating process begins.
- Shovel and shoe represent a unit that can be handled individually in relation to the coating container, the position of which can be variably adapted according to the local coating criteria.
- the device has a coating container 1, in which the component, here e.g. a turbine blade 2, over which the cover shoe 3 is inserted.
- the blade end section 4 that is not to be coated is the blade root, which is covered or shielded from the container interior 5 by way of the cover shoe 3 slipped on the foot side.
- the covering shoe 3 is covered with a suitable covering powder, e.g. Al2O3 powder, the smallest possible particle size, filled and then closed the relevant filler opening of the shoe 3 with a cover plate 6.
- the container can be closed with a lid 7.
- the container interior 5 contains a suitable coating powder for producing a hot gas corrosion layer on the airfoil and on the associated base plate 7 'of the moving blade 2.
- the composition of the coating powder depends on the type of layer to be produced; be it a so-called “alitation” or e.g. "Inchromtechnik” is intended.
- the coating powder consists of a so-called "donor” which contains the elements mentioned below, for example Al, AlSi or contains AlTi and secretes Al in the process and also from a filler (Al2O3) and an activator (eg NH4F or NH4Cl).
- the diffusion process takes place, for example, under argon or H2 or a suitable mixed gas.
- the cover shoe 3 has a component insertion opening 8, which is closed here by the counter surfaces of the foot plate 7 'seated on the shoe 3 as a component extension. It therefore has the cover shoe 3 one of the base plate 7 'according to the geometrically adapted recess 9, which in addition to a perfect local coverage of the blade root 4 also creates favorable conditions for a suitable mounting of the blade 2 on the shoe 3.
- stator and rotor blades so e.g. also for turbine blades, which are equipped with outer and / or inner pressure band segments as component extensions, which in turn, e.g. can provide the appropriate component counter surfaces on the shoe.
- the invention could also be used for local coverage of foot-side pivot parts of adjustable guide or moving blades, the blade turntable in question could be seated as a component extension in a circular recess in the cover shoe and the foot-side pivot pin could be covered by the shoe.
- a compressor or turbine blade can be covered in the specified manner by a cover shoe on both ends of the component sections.
- the cover shoe 3 can - after it has been inserted into the container 1 and closed the filling opening - be fixed locally in place via the container lid 7.
- the invention can also be used advantageously when it is a matter of wanting to re-coat blades for overhaul. In any case, however, it can be assumed that all component surfaces to be coated are finished to size.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Coating Apparatus (AREA)
Description
Die Erfindung bezieht sich auf eine Einrichtung nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a device according to the preamble of
Es ist bekannt, Turbomaschinenbauteile, z.B. Turbinenschaufeln, mit Schutzschichten, insbesondere Heißgaskorrosionsschichten, zu versehen. Bei den Einrichtungen dieser Art werden die betreffenden Bauteile in Beschichtungskästen angeordnet, in die ein für den jeweiligen Anwendungszweck geeignetes Beschichtungspulver eingebracht wird, aus dem die Beschichtung unter Beiziehung eines geeigneten Gases und unter vorgegebener Temperatureinwirkung im Diffusionsverfahren gewonnen wird.It is known to build turbo machine components, e.g. Turbine blades to be provided with protective layers, in particular hot gas corrosion layers. In the devices of this type, the relevant components are arranged in coating boxes, into which a coating powder suitable for the respective application is introduced, from which the coating is obtained using a suitable gas and under the specified temperature effect in the diffusion process.
Dabei bereitet es Schwierigkeiten, Bauteilabschnitte, die keiner Beschichtung unterworfen werden sollen, einwandfrei gegenüber dem behälterinternen Beschichtungsprozeß abzuschirmen bzw. abzudecken. Ein örtliches Abdeckerfordernis ergibt sich dadurch, daß die betreffenden Bauteile oftmals örtlich extrem unterschiedlichen mechanischen und thermischen Belastungen im Betrieb ausgesetzt sind, d.h., eine bestimmte Bauteilsektion darf hinsichtlich der betrieblich vorgegebenen Gestaltung und Werkstoffstruktur nicht vom Beschichtungsprozeß beeinträchtigt werden, der wiederum entlang einer übrigen Bauteilstruktur verlangt wird.It is difficult to properly shield or cover component sections that are not to be subjected to a coating from the coating process inside the container. A local covering requirement arises from the fact that the components in question are often exposed to extremely different mechanical and thermal loads during operation, i.e. a certain component section must not be impaired by the coating process with regard to the operationally specified design and material structure, which in turn requires along another component structure becomes.
Am Beispiel einer Turbinenschaufel bedeutet dies, daß der Schaufelfuß als der hinsichtlich betrieblicher Zug- und Schwingungsbelastungen besonders gefährdete Teile der Schaufel keiner Versprödungsgefahr aus dem Beschichtungsprozeß ausgesetzt werden darf.Using the example of a turbine blade, this means that the blade root, as the part of the blade that is particularly at risk with regard to operational tensile and vibration loads, does not pose any risk of embrittlement may be exposed to the coating process.
Zusätzlich zu den genannten Kriterien soll eine örtliche Bauteilabdeckung den Beschichtungsaufwand auf das absolut notwendige Maß zu beschränken helfen.In addition to the criteria mentioned, local component coverage should help to limit the amount of coating required to the absolute minimum.
Ein weiteres Problem hinsichtlich der örtlichen Bauteilabdeckung ergibt sich aus der häufig anzutreffenden geometrisch komplexen Bauteilgestaltung.Another problem with regard to local component coverage arises from the frequently encountered geometrically complex component design.
Im Rahmen schon untersuchter Einrichtungen der besprochenen Art bereitet auch die Bauteilhalterung Schwierigkeiten, um gleichzeitig bezüglich örtlicher Beschichtung und Abdeckung auf der sicheren Seite liegen zu können.Within the framework of the devices of the type already examined, the component holder also presents difficulties in order to be on the safe side with regard to local coating and covering.
Bei einem aus der DE-A- 20 32 418 bekannten Fall sollen die Turbinenschaufeln bei einer ersten Variante zwischen endseitigen Erweiterungen und ihren Basen gehaltert, aufeinander folgend, entlang eines gemeinsamen Längsschlitzes eines Gehäuseträgers aufgereiht werden, wobei u.a. besondere Gehäusetrennstücke erforderlich werden, wenn ein unmittelbarer Kontakt der Überzugszusammensetzung und der Markierungszusammensetzung verhindert werden soll. Dabei sollen u.a. die offenen Enden des Gehäuseträgers durch Verbiegen verschlossen werden können. Bei einer zweiten Variante dieses bekannten Falles soll die zu behandelnde bzw. zu beschichtende Hinterkante einer Schaufel über eine schlitzförmige Öffnung in einen rohrförmigen Behandlungsträger eingesetzt werden, wobei Schaufel und Träger gemeinsam in einer Abdeckkonfiguration (Kasten) liegen sollen. Eine dritte Variante des bekannten Falles behandelt stapelweises Anordnen und Aufeinanderfügen von Ringen mit dazwischen eingebetteten Radscheiben unter Zuordnung die Abdeckbehälterkonfiguration verschleißender, besonderer Wandteile aus zwischen den Ringen belassenen Schlitzen ragen die zu beschichtenden Abschnitte (Schaufeln) in den Beschichtungskasten hinein.In a case known from DE-A-20 32 418, the turbine blades in a first variant are to be held between end extensions and their bases, in succession, are lined up along a common longitudinal slot in a housing support, special housing separators being required if a direct one Contact of the coating composition and the marking composition should be prevented. Among other things, the open ends of the housing support should be able to be closed by bending. In a second variant of this known case, the rear edge of a blade to be treated or coated is to be inserted into a tubular treatment carrier via a slot-shaped opening, the blade and carrier being intended to lie together in a cover configuration (box). A third variant of the known case deals with the stacking and stacking of rings with wheel disks embedded between them, with assignment of the cover container configuration to wear, special wall parts from slots left between the rings, the sections (blades) to be coated protrude into the coating box.
Der Erfindung liegt die Aufgabe zugrunde, eine Einrichtung nach der eingangs genannten Art (Oberbegriff des Patentanspruchs 1) anzugeben, mit der eine betrieblich zuverlässige, dichte und von Strukturvorgaben eines Beschichtungsbehälters gelöste und einfachst handhabbare örtliche Bauteilabdeckung geschaffen wird.The invention has for its object to provide a device according to the type mentioned (preamble of claim 1), with which an operationally reliable, sealed and from structural specifications of a coating container and easy to handle local component cover is created.
Die gestellte Aufgabe ist mit den Merkmalen des Kennzeichnungsteils des Patentanspruches 1 erfindungsgemäß gelöst.The object is achieved according to the invention with the features of the characterizing part of
Erfindungsgemäß kann der Abdeckschuh einfachst derart über den Schaufelendabschnitt gestülpt werden, daß der nicht zu beschichtende Endabschnitt einwandfrei abgedeckt ist und somit keinen Einflüssen aus dem örtlichen Beschichtungsprozeß ausgesetzt ist. Der Hohlraum des Abdeckschuhs, in dem der nicht zu beschichtende Abschnitt, z.B. ein Schaufelfuß, angeordnet ist, ist mit einem sogenannten "Abdeckpulver", insbesondere aus Aluminiumoxid (Al₂O₃), gefüllt; das Abdeckpulver stellt eine den Schaufelfuß vor Beschichtungsgasen schützende Dichtungspackung dar. Eine besondere Einfüllöffnung für das Abdeckpulver am Schuh muß vor Beginn des Beschichtungsprozesses verschlossen sein.According to the invention, the cover shoe can be simply placed over the blade end section in such a way that the end section which is not to be coated is properly covered and is therefore not exposed to any influences from the local coating process. The cavity of the cover shoe in which the portion not to be coated, e.g. a blade root is arranged, is filled with a so-called "covering powder", in particular made of aluminum oxide (Al₂O₃); the covering powder represents a sealing packing which protects the blade root from coating gases. A special filling opening for the covering powder on the shoe must be closed before the coating process begins.
Eine möglichst glattwandige, dicht sitzende Konturierung gegenseitiger Flächen der Bauteilerweiterung und des Schuhs begünstigt die örtliche Abdeckung. Schaufel und Schuh stellen eine individuell gegenüber dem Beschichtungsbehälter handhabbare Einheit dar, deren Position den örtlichen Beschichtungskriterien gemäß variabel angepaßt werden kann.A smooth-walled, tight-fitting contouring of mutual surfaces of the component extension and the shoe favors the local coverage. Shovel and shoe represent a unit that can be handled individually in relation to the coating container, the position of which can be variably adapted according to the local coating criteria.
Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Patentansprüchen 2 bis 4.Advantageous embodiments of the invention emerge from
Anhand der Zeichnungen ist die Erfindung beispielsweise weiter erläutert, es zeigen:
- Fig. 1 -
- eine Draufsicht des Abdeckschuhs der Einrichtung
und - Fig. 2 -
- einen Teilschnitt eines Beschichtungsbehälters oder -kastens der Einrichtung einschließlich einer fußseitig abgedeckt im Abdeckschuh sitzenden Turbinenlaufschaufel.
- Fig. 1 -
- a plan view of the cover shoe of the device
and - Fig. 2 -
- a partial section of a coating container or box of the device including a turbine blade covered in the cover shoe on the foot side.
Die Einrichtung weist einen Beschichtungsbehälter 1 auf, in welchen das Bauteil, hier z.B. eine Turbinenlaufschaufel 2, über den Abdeckschuh 3 eingesetzt ist. Der nicht zu beschichtende Schaufelendabschnitt 4 ist im vorliegenden Beispiel der Schaufelfuß, der im Wege des fußseitig überstülpten Abdeckschuhs 3 gegenüber dem Behälterinnenraum 5 abgedeckt bzw. abgeschirmt ist. Nach erfolgtem Überstülpen wird der Abdeckschuh 3 mit einem geeigneten Abdeckpulver, z.B. Al₂O₃-Pulver, möglichst kleiner Teilchengröße, gefüllt und darauf die betreffende Einfüllöffnung des Schuhs 3 mit einem Abdeckblech 6 verschlossen.The device has a
Nachdem der Abdeckschuh 3 einschließlich der Turbinenlaufschaufel 2 in für die Beschichtung geeigneter Position im Behälter 1 angeordnet worden sind, kann der Behälter mit einem Deckel 7 verschlossen werden.After the
Der Behälterinnenraum 5 enthält ein geeignetes Beschichtungspulver zur Erzeugung einer Heißgaskorrosionsschicht am Schaufelblatt sowie an der zugehörigen Fußplatte 7' der Laufschaufel 2. Die Zusammensetzung des Beschichtungspulvers von der Art der zu erzeugenden Schicht abhängig; sei es, ob eine sogenannte "Alitierung" oder z.B. "Inchromierung" beabsichtigt ist.The container interior 5 contains a suitable coating powder for producing a hot gas corrosion layer on the airfoil and on the associated base plate 7 'of the moving
Grundsätzlich besteht das Beschichtungspulver aus einem sogenannten "Donator" der die nachstehend genannten Elemente, z.B. Al, AlSi oder AlTi beinhaltet und beim Prozeß Al absondert sowie ferner aus einem Füllstoff (Al₂O₃) und einem Aktivator (z.B. NH₄F oder NH₄Cl). Der Diffusionsprozeß läuft z.B. unter Argon oder H₂ oder einem geeigneten Mischgas ab.Basically, the coating powder consists of a so-called "donor" which contains the elements mentioned below, for example Al, AlSi or contains AlTi and secretes Al in the process and also from a filler (Al₂O₃) and an activator (eg NH₄F or NH₄Cl). The diffusion process takes place, for example, under argon or H₂ or a suitable mixed gas.
Wie insbesondere aus Fig. 2 erkennbar, weist der Abdeckschuh 3 eine Bauteileinschuböffnung 8 auf, die hier von den auf dem Schuh 3 aufsitzenden Gegenflächen der Fußplatte 7' als Bauteilerweiterung verschlossen ist. Es weist also der Abdeckschuh 3 eine der Fußplatte 7' gemäß geometrisch angepaßte Aussparung 9 auf, wodurch neben einer einwandfreien örtlichen Abdeckung des Schaufelfußes 4 zugleich günstige Voraussetzungen für eine geeignete Halterung der Schaufel 2 am Schuh 3 geschaffen werden.As can be seen in particular from FIG. 2, the
Die Erfindung wäre u.a. für alle möglichen Abwandlungen von Stator- und Laufschaufeln praktikabel; so z.B. auch für Turbinenlaufschaufeln, die mit äußeren und/oder inneren Druckbandsegmenten als Bauteilerweiterungen ausgestattet sind, die auch hier wiederum z.B. die geeigneten Bauteilgegenflächen am Schuh bereitstellen können.The invention would include practicable for all possible variations of stator and rotor blades; so e.g. also for turbine blades, which are equipped with outer and / or inner pressure band segments as component extensions, which in turn, e.g. can provide the appropriate component counter surfaces on the shoe.
Die Erfindung könnte auch zur örtlichen Abdeckung fußseitiger Drehzapfenpartien von verstellbaren Leit- oder Laufschaufeln verwendet werden, dabei könnte der betreffende Schaufeldrehteller als Bauteilerweiterung in einer kreisförmig angepaßten Aussparung des Abdeckschuhs sitzen und der fußseitige Drehzapfen vom Schuh abgedeckt sein.The invention could also be used for local coverage of foot-side pivot parts of adjustable guide or moving blades, the blade turntable in question could be seated as a component extension in a circular recess in the cover shoe and the foot-side pivot pin could be covered by the shoe.
Erfindungsgemäß könnten auch z.B. beidendseitige Bauteilabschnitte eine Verdichter- oder Turbinenschaufel in der angegebenen Weise durch je einen Abdeckschuh abgedeckt werden.According to the invention, e.g. a compressor or turbine blade can be covered in the specified manner by a cover shoe on both ends of the component sections.
Der Abdeckschuh 3 kann - nach erfolgtem Einsetzen in den Behälter 1 und Verschließen der Einfüllöffnung - über den Behälterdeckel 7 örtlich lösbar festgelegt werden.The
Die Erfindung kann auch vorteilhaft dann eingesetzt werden, wenn es darum geht, Schaufeln zwecks Überholung neu beschichten zu wollen. In jedem Fall ist aber davon auszugehen, daß alle zu beschichtenden Bauteilflächen auf Maß fertigbearbeitet sind.The invention can also be used advantageously when it is a matter of wanting to re-coat blades for overhaul. In any case, however, it can be assumed that all component surfaces to be coated are finished to size.
Durch eine größere Anzahl hintereinander im Behälter aufgereiht angeordneter Abdeckschuhe kann eine verhältnismäßig große Anzahl gleich oder ähnlich gestalteter Schaufeln, z.B. Turbinenschaufeln, gleichzeitig beschichtet werden; es wird auf diese Weise eine kostensparende Serienbeschichtung der Bauteile erzielt, verknüpft mit dem Vorteil einer optimalen örtlichen Bauteilabdeckung.A relatively large number of vanes of the same or similar design, e.g. Turbine blades, coated at the same time; In this way, a cost-saving series coating of the components is achieved, combined with the advantage of optimal local component coverage.
Claims (4)
- Device for the powder-diffusion coating of a compressor or turbine vane which is entirely disposed in a container used for the coating process, wherein one end section of the vane is disposed in a housing filled with a masking powder such that it is masked with respect to the container contents and is held via a widened section of a structural member at an insertion opening of the housing, characterised in that the housing is a masking shoe (3) which is inverted over the vane end section (4), wherein the widened section of the structural member is mounted in a leaktight manner along corresponding mounting surfaces at a spatially adapted recess (9) of the shoe which is open at the insertion end.
- Device according to Claim 1, characterised in that the widened section of the structural member is formed by a base plate (7') or a cover band segment at the top or base end or by a vane rotary plate.
- Device according to Claim 1 or 2, characterised in that the masking shoe (3) is located in the container (1) with a filler opening closed in the manner of a lid.
- Device according to one or more of Claims 1 to 3, characterised in that structural member sections of a vane can be masked at both ends by one masking shoe in each case.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19863644114 DE3644114A1 (en) | 1986-12-23 | 1986-12-23 | DEVICE FOR COATING TURBO MACHINE COMPONENTS, ESPECIALLY BLADES |
| DE3644114 | 1986-12-23 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0272631A2 EP0272631A2 (en) | 1988-06-29 |
| EP0272631A3 EP0272631A3 (en) | 1989-03-22 |
| EP0272631B1 true EP0272631B1 (en) | 1992-05-20 |
Family
ID=6317009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87118749A Expired - Lifetime EP0272631B1 (en) | 1986-12-23 | 1987-12-17 | Process for coating turbine components, especially turbine blades |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0272631B1 (en) |
| DE (2) | DE3644114A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2210387B (en) * | 1987-09-30 | 1992-03-11 | Rolls Royce Plc | Chemical vapour deposition |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0272630A2 (en) * | 1986-12-23 | 1988-06-29 | Mtu Motoren- Und Turbinen-Union MàNchen Gmbh | Process for coating turbine components, especially turbine blades |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB887821A (en) * | 1957-06-21 | 1962-01-24 | Chromalloy Corp | Improvements in or relating to the coating of molybdenum and molybdenum alloys |
| US3114961A (en) * | 1959-03-20 | 1963-12-24 | Power Jets Res & Dev Ltd | Treatment of porous bodies |
| BE752651A (en) * | 1969-06-30 | 1970-12-01 | Onera (Off Nat Aerospatiale) | IMPROVEMENTS TO BRING TO THE PROCESSES FOR THE PARTIAL COATING, BY DIFFUSION, OF METAL PARTS AND CORRESPONDING PARTS |
| US4350719A (en) * | 1979-09-07 | 1982-09-21 | Alloy Surfaces Company, Inc. | Diffusion coating and products therefrom |
| US4041196A (en) * | 1974-09-18 | 1977-08-09 | Alloy Surfaces Company, Inc. | Diffusion treatment of metal |
-
1986
- 1986-12-23 DE DE19863644114 patent/DE3644114A1/en active Granted
-
1987
- 1987-12-17 EP EP87118749A patent/EP0272631B1/en not_active Expired - Lifetime
- 1987-12-17 DE DE8787118749T patent/DE3779274D1/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0272630A2 (en) * | 1986-12-23 | 1988-06-29 | Mtu Motoren- Und Turbinen-Union MàNchen Gmbh | Process for coating turbine components, especially turbine blades |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0272631A3 (en) | 1989-03-22 |
| DE3644114C2 (en) | 1990-02-08 |
| DE3779274D1 (en) | 1992-06-25 |
| EP0272631A2 (en) | 1988-06-29 |
| DE3644114A1 (en) | 1988-07-07 |
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