EP2115180A2 - Procédé de production d'une couche de protection apte au rodage appliquée par projection - Google Patents

Procédé de production d'une couche de protection apte au rodage appliquée par projection

Info

Publication number
EP2115180A2
EP2115180A2 EP08734314A EP08734314A EP2115180A2 EP 2115180 A2 EP2115180 A2 EP 2115180A2 EP 08734314 A EP08734314 A EP 08734314A EP 08734314 A EP08734314 A EP 08734314A EP 2115180 A2 EP2115180 A2 EP 2115180A2
Authority
EP
European Patent Office
Prior art keywords
spray coating
producing
sub
coating
coating according
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
Application number
EP08734314A
Other languages
German (de)
English (en)
Other versions
EP2115180B1 (fr
Inventor
Andreas Jakimov
Manuel Hertter
Andreas KÄHNY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MTU Aero Engines AG
Original Assignee
MTU Aero Engines GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MTU Aero Engines GmbH filed Critical MTU Aero Engines GmbH
Publication of EP2115180A2 publication Critical patent/EP2115180A2/fr
Application granted granted Critical
Publication of EP2115180B1 publication Critical patent/EP2115180B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • 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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/12—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
    • F01D11/122—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part with erodable or abradable material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/30—Manufacture with deposition of material
    • F05D2230/31—Layer deposition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/30—Manufacture with deposition of material
    • F05D2230/31—Layer deposition
    • F05D2230/311—Layer deposition by torch or flame spraying

Definitions

  • the invention relates to a method for producing a spray coating, in particular an injection-capable spray coating for components of a turbine engine, according to the preamble of claim 1. Furthermore, the invention relates to an apparatus for performing this method according to the preamble of claim 12.
  • the current compressor design aims to increase the pressure ratio. Furthermore, the requirement of a lightweight construction, which is possible for example by reducing the number of stages, leads to an increase in the pressure ratio between the compressor stages. A side effect of this development is the increase in backflow from the pressure side to the suction side of the compressor blades.
  • This sealing system which prevents the above-described backflow between the rotating compressor blades and the compressor housing, becomes more and more important.
  • This sealing system is an important component of the efficiency and significantly influences the so-called pump line and thus the stable operation of the engine.
  • the potential contact surfaces of the housing are provided with abradable coatings, so-called inlet linings.
  • the coating material In order for the blades to be able to work into the appropriate places on the compressor housing, the coating material must be relatively easy abradable, without damaging the blade tips. Furthermore, the coating must also have good resistance to particle erosion and other degradation at elevated temperatures.
  • US Pat. No. 5,434,210 proposes a thermal spray powder and a composite coating of this powder which has a matrix component, a dry lubricant component and a plastic component.
  • a corresponding powder for thermal spraying is available under the name SM2042 from Sulzer Metco.
  • Thermal spraying refers to a process for producing a sprayed layer on the surface of a substrate, wherein filler materials are conducted onto the surface of a substrate to be coated using a gas.
  • a method and a monitoring system for quality assurance of the sprayed layers is described in DE 102004041671 Al. This is a so-called PFI (Particle Flux Imaging) method.
  • EP 1 332 799 A1 describes a device and a method for thermal spraying, in which a filler material which has been melted or melted is conducted onto a surface of a substrate to be coated using a gas or gas mixture.
  • a filler material which has been melted or melted is conducted onto a surface of a substrate to be coated using a gas or gas mixture.
  • at least one of the quality of the spray-influencing feature of the thermal spraying process which is responsible for the formation of the layer and its properties, detected, evaluated, evaluated, and regulated.
  • This provides a means for online control and optimization of one or more parameters responsible for the formation of the sprayed coating.
  • the invention is therefore based on the object to avoid the above-mentioned technical problems of the prior art and to provide an improved method for producing an injectible spray coating, which allows monitoring of the injection process by means of predetermined parameters. Furthermore, an apparatus for carrying out the method is to be made available. This object is achieved according to the invention by a method having the features of patent claim 1 and a device having the features of claim 12. Advantageous embodiments and further developments of the invention are specified in the subclaims.
  • the invention avoids the technical problems of the prior art and provides an improved method and an improved apparatus for the process-reliable production of an incidentally sprayed coating.
  • the inventive method for producing a spray coating, in particular an injectable spray coating for components of a turbine engine by means of thermal spraying, wherein for controlling and regulating the thermal spraying an online process control system, in particular a PFI unit and / or a spectrometer is provided, is characterized characterized in that at least one process parameter according to the formula
  • An advantageous development of the method provides that the coating takes place with SM2042 powder. This powder is particularly suitable for axial turbomachinery applications.
  • a further advantageous development of the method provides that the calculation takes place after setting the desired parameter online or alternatively before and after each coating. As a result, the process parameter or parameters can then be adjusted automatically or manually under constant control, for example by means of actuators.
  • a further advantageous embodiment of the method provides that the spray coating is applied to the compressor housing.
  • an enema coating can now be produced reproducibly in a low hardness.
  • the constant parameters y and z relevant for the respective process parameter of a coating reflect the correlation between the process variable of the online process control system and the respective process parameter.
  • these are between 0 and 15, with the interval limits included.
  • y is between 2 and 5, more preferably 3, while z is preferably between 8 and 12 and most preferably 10.
  • the constant parameter n for each process parameter in the respective coating takes into account a component change, i. a transfer of a sprayed layer from one component to another component and is in particular between -10 and +10, in particular between -5 and +5, wherein in each case the interval limits are to be included.
  • the primary gas flow, the secondary gas flow but also the distance between the component and the burner come into consideration as process parameters to be monitored.
  • other process parameters not mentioned here are to be regulated by means of the method according to the invention in such a way that a reproducible result of the sprayed layer results.
  • the measured process variable of the online process control system ⁇ x it is possible to incorporate a currently measured process variable in the coating process.
  • a change in the process variable is used, which is configured in such a way that the corresponding process variable of the current coating is related to the respective process variable of the preceding coating of the last component.
  • the process variable ⁇ x can be determined from the luminance distribution of the plasma and / or particle beam, which is recorded in particular via the PFI unit or the spectrometer unit.
  • the determination of the semiaxes of the ellipses from the measurement of the PFI unit lends itself to the determination of the process parameter ⁇ x from the luminance distribution.
  • An apparatus according to the invention for carrying out the method according to the invention has, on the one hand, a PFI control system and / or an optical emission spectroscopy unit whose process control parameters are correlated in a computing unit, whereby a reproducible spray coating can be produced in the event of process deviations. Furthermore, actuators for automatic adjustment of the process parameters may also be provided here.
  • process control serves to prevent rework as well as the quality control and the documentation of a spraying process.
  • the properties of the plasma and the particles in the plasma jet are detected and correlated with the layer properties. If the measured properties deviate from a previously defined reference state, a remedial measure must be taken to prevent reworking.
  • the multifunction process monitoring system is equipped with an online Particle Flux Imaging (PFI) system, an optical spectrometer and a radiation pyrometer.
  • PFI Particle Flux Imaging
  • the spectrometer additionally enables quality monitoring during the spraying process.
  • the PFI records the luminance distributions of the plasma and particle beam characteristic of the coating process.
  • the elevations with the same luminous intensity are calculated from the images by an algorithm.
  • an ellipse for the plasma and particle beam are written.
  • the elliptical characteristics, such as the semi-axes a and b, the center of gravity of the ellipse and the angle of the semi-axis a with respect to the horizontal are used to describe the current spray condition.
  • the hardness of the layer to be applied can now be controlled or monitored via a process parameter and a process variable.
  • the control or calculation is influenced by the hardness of the previously prepared layer and the process parameter (s) or process variable as well as by the constant parameters.
  • the process parameter ⁇ x contains information from the values measured via the PFI unit, in particular the luminance distribution of the plasma and / or particle beam be used from the current and a previous coating process.
  • the change of the semiaxes of the measured ellipses from the current and a previous process is used. But it is also possible to use the center of gravity of the ellipses or the angle of the semi-axes.
  • the optical spectrometer detects the light emitted by the plasma and the particles via a measuring head and directs it via a fiber optic cable to a highly sensitive spectrograph.
  • the temporal tracking of the entire spectral Emission as well as of several characteristic measurement lines of the total spectrum makes it possible to detect and store intensity changes.
  • the radiation pyrometer is used for non-contact temperature measurement during the coating process. It ensures the recording and graphical output of measurement data from the entire coating process.
  • the present invention is not limited in its execution to the above-mentioned, preferred embodiment. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

L'invention concerne un procédé de production d'une couche de protection appliquée par projection, en particulier d'une couche de protection apte au rodage appliquée par projection thermique et destinée à des composants d'un moteur à turbine, un système de contrôle de processus en ligne, en particulier un ensemble d'imagerie de flux de particules (PFI) et/ou un ensemble spectromètre, étant prévu pour contrôler et réguler la projection thermique. Selon l'invention, au moins un paramètre de processus est calculé d'après la formule pB1 = pB2 + HB1 - HB2 - (Δx •y)/z + n, pB1 représentant le paramètre de processus du composant à enduire, pB2 représentant le paramètre de processus d'un revêtement précédent, HB1 représentant la dureté de la couche de protection à appliquer par projection, HB2 représentant la dureté de la couche de protection précédente, Δx représentant une grandeur de processus du système de contrôle de processus en ligne et y, z, n désignant des paramètres constants.
EP08734314.1A 2007-03-01 2008-02-25 Procédé de production d'un revêtement abradable par projection Active EP2115180B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007010049A DE102007010049B4 (de) 2007-03-01 2007-03-01 Verfahren zum Herstellen eines einlauffähigen Spritzbelags
PCT/DE2008/000333 WO2008104162A2 (fr) 2007-03-01 2008-02-25 Procédé de production d'une couche de protection apte au rodage appliquée par projection

Publications (2)

Publication Number Publication Date
EP2115180A2 true EP2115180A2 (fr) 2009-11-11
EP2115180B1 EP2115180B1 (fr) 2019-04-10

Family

ID=39512790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08734314.1A Active EP2115180B1 (fr) 2007-03-01 2008-02-25 Procédé de production d'un revêtement abradable par projection

Country Status (5)

Country Link
US (1) US20100062172A1 (fr)
EP (1) EP2115180B1 (fr)
CA (1) CA2679651C (fr)
DE (1) DE102007010049B4 (fr)
WO (1) WO2008104162A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140094950A1 (en) * 2007-03-01 2014-04-03 MTU Aero Engines AG Method for the production of an abradable spray coating
DE102013223688A1 (de) * 2013-11-20 2015-05-21 Siemens Aktiengesellschaft Verfahren und Vorrichtung zum automatisierten Aufbringen einer Spritzbeschichtung
JPWO2019044805A1 (ja) * 2017-08-29 2020-10-01 住友電気工業株式会社 ガラス微粒子堆積体の製造方法、ガラス母材の製造方法及びガラス母材

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783341A (en) * 1987-05-04 1988-11-08 United Technologies Corporation Method and apparatus for measuring the density and hardness of porous plasma sprayed coatings
US5196471A (en) 1990-11-19 1993-03-23 Sulzer Plasma Technik, Inc. Thermal spray powders for abradable coatings, abradable coatings containing solid lubricants and methods of fabricating abradable coatings
DE19820195A1 (de) * 1998-05-06 1999-11-11 Linde Ag Qualitätssicherung beim thermischen Spritzen
DE10203884A1 (de) * 2002-01-31 2003-08-14 Flumesys Gmbh Fluidmes Und Sys Vorrichtung und Verfahren zum thermischen Spritzen
FR2836619B1 (fr) * 2002-02-28 2004-04-16 Snecma Services Instrument de projection thermique
DE10244037A1 (de) * 2002-09-21 2004-04-08 Mtu Aero Engines Gmbh Verfahren zur Beschichtung eines Werkstücks
DE10356953B4 (de) * 2003-12-05 2016-01-21 MTU Aero Engines AG Einlaufbelag für Gasturbinen sowie Verfahren zur Herstellung desselben
DE102004010782A1 (de) * 2004-03-05 2005-09-22 Mtu Aero Engines Gmbh Verfahren zur Beschichtung eines Werkstücks
DE102004041671A1 (de) 2004-08-27 2006-03-02 Linde Ag Überwachung von Spritzprozessen
DE102006053774A1 (de) * 2006-11-15 2008-05-21 Mtu Aero Engines Gmbh Vorrichtung zum thermischen Spritzen, Verfahren zum Überwachen eines Prozesses des thermischen Spritzen und Verfahren zum Beschichten und/oder Ausbessern von Turbinen- oder Triebwerksteilen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008104162A2 *

Also Published As

Publication number Publication date
DE102007010049B4 (de) 2011-01-13
DE102007010049A1 (de) 2008-09-04
WO2008104162A2 (fr) 2008-09-04
CA2679651C (fr) 2016-07-05
EP2115180B1 (fr) 2019-04-10
CA2679651A1 (fr) 2008-09-04
US20100062172A1 (en) 2010-03-11
WO2008104162A3 (fr) 2009-07-23

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