EP3374534A1 - Method for masking a component that is intended to be coated with a thermal spray layer - Google Patents
Method for masking a component that is intended to be coated with a thermal spray layerInfo
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000000873 masking effect Effects 0.000 title claims abstract description 33
- 239000007921 spray Substances 0.000 title description 3
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000007751 thermal spraying Methods 0.000 claims abstract description 8
- 239000011324 bead Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 15
- 230000005855 radiation Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 6
- 238000001723 curing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
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)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating By Spraying Or Casting (AREA)
- Coating Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15194293 | 2015-11-12 | ||
PCT/EP2016/077167 WO2017081098A1 (en) | 2015-11-12 | 2016-11-09 | Method for masking a component that is intended to be coated with a thermal spray layer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3374534A1 true EP3374534A1 (en) | 2018-09-19 |
EP3374534B1 EP3374534B1 (en) | 2021-05-26 |
Family
ID=54695456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16793898.4A Active EP3374534B1 (en) | 2015-11-12 | 2016-11-09 | Method of masking a component which can be coated with a thermal sprayed layer |
Country Status (7)
Country | Link |
---|---|
US (2) | US20190144984A1 (en) |
EP (1) | EP3374534B1 (en) |
JP (2) | JP6876041B2 (en) |
CN (1) | CN108603274A (en) |
CA (1) | CA3004380A1 (en) |
RU (1) | RU2729687C2 (en) |
WO (1) | WO2017081098A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202021105511U1 (en) | 2021-10-12 | 2023-01-17 | Weidplas Gmbh | Device for masking a component and device for coating a component |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4464430A (en) | 1981-02-26 | 1984-08-07 | Alloy Surfaces Company, Inc. | Metal diffusion |
JPS59160569A (en) * | 1983-03-03 | 1984-09-11 | Sumitomo Metal Ind Ltd | Partial melt-spraying method |
JP3158451B2 (en) | 1991-01-29 | 2001-04-23 | 豊田工機株式会社 | Measuring head balance device |
JPH05111666A (en) * | 1991-10-23 | 1993-05-07 | Yoshikawa Kogyo Co Ltd | Masking method for thermal spraying |
CA2176496C (en) * | 1993-11-29 | 1999-09-28 | Kathleen A. Clark | Method for extracting nucleic acids from a wide range of organisms |
JP3157990B2 (en) * | 1994-08-26 | 2001-04-23 | 日本ペイント株式会社 | Masking method and spray coating method in spray coating |
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 |
DE60004798T3 (en) * | 1999-05-27 | 2007-08-16 | Patterning Technologies Ltd. | Method for producing a mask on a surface |
US6645299B2 (en) | 2001-09-18 | 2003-11-11 | General Electric Company | Method and assembly for masking |
FR2863191B1 (en) * | 2003-12-04 | 2007-04-20 | Snecma Moteurs | PROTECTIVE MASK FOR SURFACE TREATMENT OF TURBOMACHINE BLADES |
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 (en) * | 2008-09-20 | 2010-03-25 | Mtu Aero Engines Gmbh | Device and method for masking a component zone |
JP5359180B2 (en) * | 2008-10-20 | 2013-12-04 | マツダ株式会社 | Masking member and film forming method using masking member |
RU2442816C1 (en) * | 2010-12-17 | 2012-02-20 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Device for removing hydrogen sulphide and low-molecular mercaptans from oil |
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 |
-
2016
- 2016-11-09 CA CA3004380A patent/CA3004380A1/en not_active Abandoned
- 2016-11-09 RU RU2018119475A patent/RU2729687C2/en active
- 2016-11-09 US US15/775,241 patent/US20190144984A1/en not_active Abandoned
- 2016-11-09 JP JP2018523461A patent/JP6876041B2/en active Active
- 2016-11-09 EP EP16793898.4A patent/EP3374534B1/en active Active
- 2016-11-09 WO PCT/EP2016/077167 patent/WO2017081098A1/en active Application Filing
- 2016-11-09 CN CN201680067137.6A patent/CN108603274A/en active Pending
-
2020
- 2020-05-22 US US16/882,060 patent/US20200283880A1/en not_active Abandoned
- 2020-12-28 JP JP2020218208A patent/JP2021046615A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US20200283880A1 (en) | 2020-09-10 |
JP6876041B2 (en) | 2021-05-26 |
JP2018537583A (en) | 2018-12-20 |
WO2017081098A1 (en) | 2017-05-18 |
CA3004380A1 (en) | 2017-05-18 |
CN108603274A (en) | 2018-09-28 |
RU2018119475A3 (en) | 2020-03-25 |
RU2729687C2 (en) | 2020-08-11 |
JP2021046615A (en) | 2021-03-25 |
EP3374534B1 (en) | 2021-05-26 |
RU2018119475A (en) | 2019-12-13 |
US20190144984A1 (en) | 2019-05-16 |
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Inventor name: STOECKLI, MARTIN Inventor name: MICHLA, ALEXANDER Inventor name: GASTEL, PHILIPP Inventor name: SOLLBERGER, ALEXANDER Inventor name: RUSSO, DARIO |
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