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WO2008031373A1 - Procédé d'enduction d'organes de machine et procédé de fabrication d'un bloc de matière d'enduction - Google Patents

Procédé d'enduction d'organes de machine et procédé de fabrication d'un bloc de matière d'enduction Download PDF

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Publication number
WO2008031373A1
WO2008031373A1 PCT/DE2006/001656 DE2006001656W WO2008031373A1 WO 2008031373 A1 WO2008031373 A1 WO 2008031373A1 DE 2006001656 W DE2006001656 W DE 2006001656W WO 2008031373 A1 WO2008031373 A1 WO 2008031373A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating material
block
coating
heat treatment
coated
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.)
Ceased
Application number
PCT/DE2006/001656
Other languages
German (de)
English (en)
Inventor
Rene Jabado
Jens Dahl Jensen
Ursus KRÜGER
Daniel Körtvelyessy
Ralph Reiche
Michael Rindler
Gabriele Winkler
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to PCT/DE2006/001656 priority Critical patent/WO2008031373A1/fr
Priority to DE112006004133T priority patent/DE112006004133A5/de
Publication of WO2008031373A1 publication Critical patent/WO2008031373A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials

Definitions

  • the present invention relates to a method for coating machine components with a coating material and to a method for producing a block of coating material.
  • a corrosion-inhibiting and / or oxidation-inhibiting coating and optionally also with a thermal barrier coating (TBC).
  • TBC thermal barrier coating
  • the coatings are applied by means of classical painting and spraying techniques.
  • solid particles such as metal particles, ceramic particles, oxide particles, pigment particles, etc. with particle sizes in the micrometer and nanometer range (micro- and nanoparticles) are suspended or dispersed in a binder and then applied to the component surface by means of the mentioned coating and / or spraying techniques , Subsequently, the applied layer is subjected to a heat treatment to crosslink it.
  • the painting and / or spraying techniques used lead to the formation of acidic aerosols, which makes elaborate safety measures, such as in the form of a closed spray booth, necessary when carrying out the painting and / or spraying techniques.
  • JP 09279057 A describes a method for repairing a coating. There, a scratch in a coating is repaired by passing a pencil over the scratch with a repair material, with material in the coating Scratches deposited. Excess material is then wiped off with a cloth and finally a resin is applied over the repair site.
  • the preparation of such pins can be done, for example, by compacting and sintering powder suspensions.
  • the behavior of aluminum powder suspensions with three different average particle sizes in the nanometer range in compacting and sintering is described, for example, in the article by Jian-Lin Shi and J.D. Zhang, "Compaction and Sintering Behavior of Bimodal Alumina Powder Suspensions by Pressure Filtration", J. Am. Ceram. Soc., 83 (4), 737-42 (2000).
  • the object of the present invention is to provide an advantageous method for coating machine components using a block. It is a further object of the present invention to provide a method of making a block suitable for use in the process of coating engine components.
  • the coating material is provided in the form of a block, for example as a pin.
  • the coating material is applied to the coating material by means of the block. de surface rubbed.
  • the coating material used is a material which has monomers which undergo a polycondensation reaction under the action of heat. After the coating material has been applied to a machine component, it is subjected to a heat treatment.
  • the method according to the invention makes it possible to produce a coating, in particular a corrosion and / or oxidation-inhibiting coating on machine components, with only one application step.
  • a second application step namely the application of the liquid resin is necessary.
  • the heating step there is also a flow of the rubbed coating material, which compensates for unevenness arising during reaming. Wiping the surface after the application of the coating material is therefore not necessary in contrast to the prior art.
  • the method according to the invention also offers the advantages over painting and spraying methods for applying coatings which are resistant to corrosion and / or oxidation to machine components that no expensive securing measures, such as closed spray booths, are necessary.
  • the reaming of the coating material is therefore economically more favorable.
  • the rubbing offers the possibility of applying the coating on site, for example when repairing corrosion and / or wear protection layers. Removing and transporting the machine component to a coating plant is therefore not necessary.
  • the heat treatment by means of heating elements are performed. These become at least after application of the coating material to the machine component applied where the surface to be coated is located.
  • the heating can also be done without contact by means of radiant heaters.
  • the block of coating material is preferably rubbed across the surface to be coated, transverse to the direction of expansion of the cracks. As a result, more material is deposited in the region of the rear crack edge in the direction of movement than elsewhere. In other words, where more coating material is needed (to fill the cracks) more material is deposited. In the heat treatment then the deposited material in the
  • the coating material may comprise particle sizes in the micrometer range and particle sizes in the nanometer range.
  • particle sizes are to be understood as meaning in each case the mean particle size, since the particles generally have a size distribution.
  • a coating material which comprises particles having two particle sizes therefore has a particle size distribution with two pronounced maxima in the range of the respective average particle size. In the present case, therefore, at least a maximum in the nanometer range and at least a maximum in the micrometer range are present.
  • the heat treatment includes a temperature step at a temperature above 300 0 C.
  • a tem- can, for example in the case of diphosphoric acid as monomers, cause a polycondensation of the monomers.
  • the coating material used can be, in particular, a coating material having at least one color pigment. This makes it possible to give the coating material a different color than the material of the surface to be coated. On the one hand, this makes it possible to identify where coating material has already been wiped, and, on the other hand, it is possible to detect in the finished coating where coating material has been removed due to wear and / or corrosion down to the underlying substrate material.
  • the quality of the abraded coating is determined on the one hand by the bonding forces within the block and the roughness of the workpiece surface and on the other by the pressure and speed of the block against the surface during application. It is therefore of advantage if the block for reaming the coating is guided over the surface to be coated at a defined speed and / or pressure.
  • the method of making a block of coating material according to the invention comprises the steps of mixing the constituents of the coating material with a binder comprising monomers which undergo a polycondensation reaction under heat treatment, forming the mixture into a block and sintering the formed mixture.
  • a block of coating material produced by the method according to the invention can be used for carrying out the method according to the invention.
  • the hardness of the Blocks can be adjusted by the type and amount of the binder added.
  • the strength of the block can be adapted to the roughness of the surfaces to be coated as well as the rubbing of the coating material as usual friction pressures and friction speeds.
  • a suitable binder such as phosphoric acid and / or chromic acid may be used.
  • the phosphoric acid can be converted into an annealing below 200 0 C, which can be carried out, for example, as part of the sintering acid in diphosphoric.
  • the diphosphonic acid is a monomer having a temperature above 300 0 C undergoes Polykondensationsreak- tion in a later suitable heat treatment.
  • the mixture of the constituents of the coating material may also be admixed with at least one color pigment.
  • the advantages of color pigments in the coating material have already been described with reference to the process for coating machine components.
  • Fig. 1 shows a highly schematic of a machine component with a cracked coating.
  • Fig. 2 shows the component of Fig. 1 when rubbed by the coating material.
  • Fig. 3 shows the coated component after performing a heat treatment.
  • the method according to the invention for coating a machine component is described below with reference to FIGS. 1 to 3 in connection with the repair of a cracked corrosion-inhibiting coating on a compressor blade as an example of a machine component.
  • Fig. 1 shows a highly schematic representation of a section through the wall of a compressor blade 10. It can be seen the base material 1 of the wall and the existing on the wall corrosion-inhibiting coating 3. The coating 3 has cracks 5 due to an operational stress.
  • the inventive method is in the present embodiment in the context of a reprocessing process for the compressor blade 10, ie in the context of a so-called refurbishment performed.
  • the layer thickness and the layer quality of the material layer 9 are determined by the binding forces within the pin 7, the roughness of the surface 4 to be coated, the pressure exerted on the block 7 when rubbed, and the speed of the pin 7 relative to the surface 4 certainly. By a suitable choice of parameters, therefore, a variation of the thickness of the material layer 9 and its quality is possible.
  • the production of the pin 7 is carried out in the present embodiment by mixing the constituents of the coating material with a binder which comprises monomers undergoing a polycondensation reaction under heat treatment.
  • a binder which comprises monomers undergoing a polycondensation reaction under heat treatment.
  • phosphoric acid is used as a binder.
  • other binders which comprise such monomers can also be used in principle.
  • chromic acid may be present.
  • Other constituents of the coating material in the present exemplary embodiment are water, pulverulent chromium (III) compounds and (optionally) pulverulent pigments.
  • the pulverulent coating constituents in particular at least the aluminum, have a particle size distribution which has at least two maxima with distinctly different particle sizes.
  • a maximum in the case of particle sizes in the nanometer range ie particle sizes below one micrometer, and preferably below 100 nanometers, whereas the second maximum is above one micrometer for particle sizes.
  • the mixture After mixing the solid and liquid components and the phosphoric acid, the mixture is poured into a mold and pressed into a pin.
  • a sintering process at temperatures wherein the phosphoric acid that was present above as mono phosphoric acid (H 3 PO 4), pyrophosphoric acid (H 4 P 2 O 7) is converted up to 200 0 C, but not above.
  • the diphosphoric acid later serves as the basis for polycondensation.
  • the hardness of the pencil to be produced can be adjusted by suitable choice of a binder.
  • the pin After pressing and sintering, the pin can be used for coating.
  • an annealing takes place which has at least one temperature step above 300 ° C.
  • the material from the material depots 11 fills the cracks.
  • the heat treatment may be carried out either by placing the entire compressor blade 10 in an oven, or by covering the blade with heating mats or by wrapping heating cables.
  • Heating mats and heating cables are particularly suitable if the reprocessing on site and place, as the compressor, takes place. Instead of heating mats or heating cables but also devices for radiant heating, such as radiant heaters, can be used.
  • the application of the coating material by means of a pin no acidic aerosols, no expensive safety measures are necessary.
  • the application of the coating material is thereby simpler and less expensive.
  • the application can be done on site, which in particular simplifies the repair of corrosion and wear protection layers, for example, when cracking.
  • a special coloring of the applied coating material by adding color pigments to the pen can mark the coating.
  • the layer 9 has been applied to an already existing worn coating in the exemplary embodiment described, the worn coating is not a prerequisite for carrying out the coating method according to the invention. Instead of being worn on a worn coating, the layer 9 can also be wiped directly onto the surface of the base material of the machine component.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne un procédé d'enduction d'organes de machine (10), notamment des organes de compresseur, au moyen d'une matière d'enduction (9). La matière d'enduction (9) se présente sous forme d'un bloc (7) qui est frotté sur la surface (4) à enduire. Cette matière d'enduction (9) est une matière qui comporte des monomères qui ont une réaction de polycondensation sous l'effet de la chaleur. La matière d'enduction (9) ayant été appliquée par frottement, l'organe de machine (10) est soumis à un traitement thermique. L'invention porte également sur un procédé de fabrication d'un bloc (7) de matière d'enduction (9), ce procédé comportant les opérations suivantes: mélanger les composants de la matière d'enduction avec un liant qui contient ou peut former des monomères qui ont une réaction de polycondensation sous l'effet de la chaleur; former un bloc (7) à partir du mélange et fritter le mélange ainsi moulé.
PCT/DE2006/001656 2006-09-15 2006-09-15 Procédé d'enduction d'organes de machine et procédé de fabrication d'un bloc de matière d'enduction Ceased WO2008031373A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/DE2006/001656 WO2008031373A1 (fr) 2006-09-15 2006-09-15 Procédé d'enduction d'organes de machine et procédé de fabrication d'un bloc de matière d'enduction
DE112006004133T DE112006004133A5 (de) 2006-09-15 2006-09-15 Verfahren zum Beschichten von Maschinenkomponenten und Verfahren zum Herstellen eines Blocks aus Beschichtungsmaterial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2006/001656 WO2008031373A1 (fr) 2006-09-15 2006-09-15 Procédé d'enduction d'organes de machine et procédé de fabrication d'un bloc de matière d'enduction

Publications (1)

Publication Number Publication Date
WO2008031373A1 true WO2008031373A1 (fr) 2008-03-20

Family

ID=38006725

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2006/001656 Ceased WO2008031373A1 (fr) 2006-09-15 2006-09-15 Procédé d'enduction d'organes de machine et procédé de fabrication d'un bloc de matière d'enduction

Country Status (2)

Country Link
DE (1) DE112006004133A5 (fr)
WO (1) WO2008031373A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102410225A (zh) * 2011-10-17 2012-04-11 上海西工压缩机配件有限公司 一种压缩机叶片及其制备工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704126B1 (de) * 1977-01-28 1978-08-03 Mannesmann Ag Verfahren und Vorrichtung zum Erzeugen einer Korrosionsschutzschicht auf Rohren oder anderen langgestreckten Profilen aus Stahl
EP0424551A1 (fr) * 1989-10-23 1991-05-02 Karl Reinhard Zeiss Procédé de production et de traitement de mélanges multicomposants à base de résines réactives
EP0494672A1 (fr) * 1991-01-10 1992-07-15 BHP STEEL (JLA) PTY Ltd Procédé et appareil pour revêtir en continu une bande de métal
EP0578219A1 (fr) * 1992-07-07 1994-01-12 BHP STEEL (JLA) PTY Ltd Procédé et appareil de revêtement par fusion en continu
JPH09279057A (ja) * 1996-04-08 1997-10-28 Sakura Color Prod Corp 塗装補修道具および塗装補修方法
WO1998008618A1 (fr) * 1996-08-30 1998-03-05 Bhp Steel (Jla) Pty. Ltd. Chargement de blocs de peinture solides sur une bande d'acier glissant en continu

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704126B1 (de) * 1977-01-28 1978-08-03 Mannesmann Ag Verfahren und Vorrichtung zum Erzeugen einer Korrosionsschutzschicht auf Rohren oder anderen langgestreckten Profilen aus Stahl
EP0424551A1 (fr) * 1989-10-23 1991-05-02 Karl Reinhard Zeiss Procédé de production et de traitement de mélanges multicomposants à base de résines réactives
EP0494672A1 (fr) * 1991-01-10 1992-07-15 BHP STEEL (JLA) PTY Ltd Procédé et appareil pour revêtir en continu une bande de métal
EP0578219A1 (fr) * 1992-07-07 1994-01-12 BHP STEEL (JLA) PTY Ltd Procédé et appareil de revêtement par fusion en continu
JPH09279057A (ja) * 1996-04-08 1997-10-28 Sakura Color Prod Corp 塗装補修道具および塗装補修方法
WO1998008618A1 (fr) * 1996-08-30 1998-03-05 Bhp Steel (Jla) Pty. Ltd. Chargement de blocs de peinture solides sur une bande d'acier glissant en continu

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102410225A (zh) * 2011-10-17 2012-04-11 上海西工压缩机配件有限公司 一种压缩机叶片及其制备工艺

Also Published As

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