EP3374534A1 - Procédé pour masquer une pièce devant être revêtue d'une couche pulvérisée à chaud - Google Patents

Procédé pour masquer une pièce devant être revêtue d'une couche pulvérisée à chaud

Info

Publication number
EP3374534A1
EP3374534A1 EP16793898.4A EP16793898A EP3374534A1 EP 3374534 A1 EP3374534 A1 EP 3374534A1 EP 16793898 A EP16793898 A EP 16793898A EP 3374534 A1 EP3374534 A1 EP 3374534A1
Authority
EP
European Patent Office
Prior art keywords
paste
masking
component
coated
critical
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
EP16793898.4A
Other languages
German (de)
English (en)
Other versions
EP3374534B1 (fr
Inventor
Alexander MICHLA
Philipp GASTEL
Alexander Sollberger
Martin STÖCKLI
Dario Russo
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.)
Oerlikon Metco AG
Original Assignee
Oerlikon Metco AG
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 Oerlikon Metco AG filed Critical Oerlikon Metco AG
Publication of EP3374534A1 publication Critical patent/EP3374534A1/fr
Application granted granted Critical
Publication of EP3374534B1 publication Critical patent/EP3374534B1/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
    • C23C4/01—Selective coating, e.g. pattern coating, without pre-treatment of the material to be coated
    • 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
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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

Definitions

  • the present invention relates to a method for masking a part of the surface of a component to be coated by thermal spraying.
  • Thermal spraying is a coating process in which a material, for example in powder form, is continuously melted. The resulting droplets are thrown onto the surface to be coated, causing flattened droplets to accumulate on the surface.
  • the layer layers that build up in this way lead to a coating which, for example, may be harder, more brittle but also more porous than the uncoated component. It is noteworthy that any fusible material can be sprayed and that almost any component material and virtually any component geometry can be coated.
  • the degree of automation achievable with the method is very high, as well as the reproducibility and the achievable quality of the layers.
  • the entire surface of the component should not be coated. Those parts of the surface which are not to be coated must therefore be covered, i. be masked. Unfortunately, the degree of automation achieved in the masking is so far very low. In many cases, the components are still masked manually.
  • overlay masks are used, as described, for example, in JP 3158451 or US Pat. No. 6,645,299.
  • adhesive masks of adhesive tapes which are glued directly onto the non-coated parts of the surface.
  • WO2010 / 031370 AI itself a mask is described, which consists of an elastic material which has a slight undersize. Among the materials described there are also, for example, elastomers. When the masking is applied to the component, the masking closes very close to the component due to its undersize. This type of masking works especially well when the component has to be masked all around.
  • the present invention is therefore based on the object of specifying a largely automated masking method, it allows to position the critical mask boundaries in the required high accuracy.
  • the mask is realized at least along the critical mask boundaries by means of a paste which is dispensed from a nozzle.
  • paste used in the present specification means a liquid material which has a viscosity level such that it can be applied to the surface of the component in the form of a sealing bead with an arbitrary contour without dissipating on the surface Hardenable paste.
  • Viscosity has a great influence on the precision with which a sealing bead with its geometric shape (generation of shading) can be produced. For this reason, according to a preferred embodiment of the present invention, the paste and / or the component to be masked are processed and applied under a predetermined temperature-controlled environment (cooled).
  • curing can be carried out by evaporation of solvent contained in the paste.
  • the curing is realized at least partially by crosslinking, particularly preferably by photo-induced crosslinking.
  • a UV-curing paste is used. This is advantageous, inter alia, because the paste only has to be quenched shortly after it has been applied to the component. As part of the thermal spraying, and especially when it is a plasma process, the component is due to the plasma process exposed to intense UV radiation, resulting in a further curing and ideally complete curing. Due to the fact that the paste only has to be hardened at first, cheaper UV sources can be used and / or the UV irradiation time can be shortened.
  • masking is accomplished in two steps. Surfaces to be masked are accordingly masked by one of the methods already known from the prior art, although no masking with the correspondingly known means is provided in the area of the critical mask boundaries. It is therefore a partial masking, the areas around the critical mask boundaries being omitted.
  • the areas around the critical mask boundaries according to this embodiment are then masked by the above-mentioned method, i. It is applied by means of at least one nozzle masking paste in these areas, thus completing the masking. It is advantageous to ensure that the completion of the masking results in an overlap with the partial masking in order to ensure that no unmasked areas arise between partial masking and completion masking.
  • the component would be mounted on the robot arm, since then the connection of the nozzle to the paste reservoir, which is usually ensured via hoses, is not subject to any movement.
  • the nozzle On the robot arm. More generally, means for positioning and / or orientation of the component and / or means for positioning and / or orientation of the at least one nozzle may be provided.
  • a critical mask boundary is described by a precise sealing bead.
  • the non-critical mask boundaries can be divided into at least two categories, namely attaching e.g. simple cases. However, in some cases, sheaths may not be attached to undercuts, or may restrict the dispensing process. For this reason, according to a preferred embodiment, a lower-viscosity pasty material is used in a second dispenser. Due to the low viscosity it flows into each other and can be applied very well. Beforehand, the precise sealing beads are laid.
  • the paste is therefore preferably adapted to the material of the component to be masked in such a way that a contact angle of at least 90 ° results.
  • the mask thickness then does not increase continuously at the critical mask boundary but forms an at least vertical, if not overhanging wall.
  • the thermally sprayed layer is substantially interrupted at the critical mask boundary.
  • the contact angle exceeds 90 °, a shading effect occurs more intensively, which still contributes to the separation of the spray layers on the left and right of the critical mask boundary.
  • At least a second Sealing bead placed over the first sealing bead is applied so that a reinforced overhang is realized, which has an amplification of the shading effect.
  • the contact angle is hereby defined to be similar to the contact angle at a liquid-solid interface because, when the paste is applied, a contact angle is formed, with the contact angle regardless of whether the paste cures or not throughout the process essentially does not change.
  • the angle defined by the surface of the component at the interface between component and sealing bead and a tangent to the surface of the sealing bead or a tangent to the surfaces of the double sealing beads is defined as the contact angle.
  • Figure 1 illustrates the corresponding situation in which two superimposed sealing beads 3 are applied to a component 1 in such a way that the contact angle ⁇ > 90 ° (visible on the left edge of the figure).
  • a contact angle a ⁇ 90 ° would not be optimal, since there may be problems of layer separation of the layer 5 (visible on the right edge of the figure).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Coating Apparatus (AREA)

Abstract

La présente invention concerne un procédé de revêtement de pièces par pulvérisation à chaud, la surface de la pièce ne devant pas être totalement revêtue et les parties de la surface qui ne doivent pas être revêtues étant recouvertes par masquage avant l'étape de revêtement. L'invention se caractérise en ce que le recouvrement, au moins dans les zones des limites critiques de masquage, est effectué par un procédé à la pâte, c.-à-d. au moyen d'une pâte projetée par au moins une buse.
EP16793898.4A 2015-11-12 2016-11-09 Procede de masquage d'un composant devant etre recouvert d'une couche de diffusion thermique Active EP3374534B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15194293 2015-11-12
PCT/EP2016/077167 WO2017081098A1 (fr) 2015-11-12 2016-11-09 Procédé pour masquer une pièce devant être revêtue d'une couche pulvérisée à chaud

Publications (2)

Publication Number Publication Date
EP3374534A1 true EP3374534A1 (fr) 2018-09-19
EP3374534B1 EP3374534B1 (fr) 2021-05-26

Family

ID=54695456

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16793898.4A Active EP3374534B1 (fr) 2015-11-12 2016-11-09 Procede de masquage d'un composant devant etre recouvert d'une couche de diffusion thermique

Country Status (7)

Country Link
US (2) US20190144984A1 (fr)
EP (1) EP3374534B1 (fr)
JP (2) JP6876041B2 (fr)
CN (1) CN108603274A (fr)
CA (1) CA3004380A1 (fr)
RU (1) RU2729687C2 (fr)
WO (1) WO2017081098A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202021105511U1 (de) 2021-10-12 2023-01-17 Weidplas Gmbh Vorrichtung zum Maskieren eines Bauteils und Vorrichtung zum Beschichten eines Bauteils

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4464430A (en) 1981-02-26 1984-08-07 Alloy Surfaces Company, Inc. Metal diffusion
JPS59160569A (ja) * 1983-03-03 1984-09-11 Sumitomo Metal Ind Ltd 部分溶射方法
JP3158451B2 (ja) 1991-01-29 2001-04-23 豊田工機株式会社 測定ヘッドバランス装置
JPH05111666A (ja) * 1991-10-23 1993-05-07 Yoshikawa Kogyo Co Ltd 溶射加工におけるマスキング方法
WO1995014768A2 (fr) * 1993-11-29 1995-06-01 Gen-Probe Incorporated Procede d'extraction d'acides nucleiques d'une grande variete d'organismes
JP3157990B2 (ja) * 1994-08-26 2001-04-23 日本ペイント株式会社 吹き付け塗工におけるマスキング方法および吹き付け塗工方法
US5695659A (en) * 1995-11-27 1997-12-09 United Technologies Corporation Process for removing a protective coating from a surface of an airfoil
US5786028A (en) * 1996-09-05 1998-07-28 Cantwell; Jay S. Masking tape and method
WO2001011426A1 (fr) * 1999-05-27 2001-02-15 Patterning Technologies Limited Procede de formation d'un motif de masquage sur une surface
US6645299B2 (en) 2001-09-18 2003-11-11 General Electric Company Method and assembly for masking
FR2863191B1 (fr) * 2003-12-04 2007-04-20 Snecma Moteurs Masque de protection pour le traitement de surface d'aubes de turbomachines
US8033013B2 (en) * 2008-06-30 2011-10-11 Compeq Manufacturing Co., Ltd. Method of making rigid-flexible printed circuit board having a peelable mask
DE102008048127A1 (de) 2008-09-20 2010-03-25 Mtu Aero Engines Gmbh Vorrichtung und Verfahren zum Maskieren einer Bauteilzone
JP5359180B2 (ja) * 2008-10-20 2013-12-04 マツダ株式会社 マスキング部材及びマスキング部材を用いた被膜形成方法
RU2442816C1 (ru) * 2010-12-17 2012-02-20 Открытое акционерное общество "Татнефть" имени В.Д. Шашина Установка очистки нефти от сероводорода и низкомолекулярных меркаптанов
US9142777B2 (en) * 2013-01-08 2015-09-22 OLEDWorks LLC Apparatus and method for making OLED lighting device
US9126232B2 (en) * 2013-02-21 2015-09-08 Pratt & Whitney Canada Corp. Method of protecting a surface
US9956580B2 (en) * 2014-02-14 2018-05-01 United Technologies Corporation Spray masking for rotors

Also Published As

Publication number Publication date
CA3004380A1 (fr) 2017-05-18
WO2017081098A1 (fr) 2017-05-18
CN108603274A (zh) 2018-09-28
JP2021046615A (ja) 2021-03-25
JP6876041B2 (ja) 2021-05-26
RU2018119475A (ru) 2019-12-13
EP3374534B1 (fr) 2021-05-26
US20200283880A1 (en) 2020-09-10
JP2018537583A (ja) 2018-12-20
RU2729687C2 (ru) 2020-08-11
US20190144984A1 (en) 2019-05-16
RU2018119475A3 (fr) 2020-03-25

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