CN105970139B - Titration hole sealing device and method in micropores in thermal spraying process - Google Patents
Titration hole sealing device and method in micropores in thermal spraying process Download PDFInfo
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- CN105970139B CN105970139B CN201610547892.6A CN201610547892A CN105970139B CN 105970139 B CN105970139 B CN 105970139B CN 201610547892 A CN201610547892 A CN 201610547892A CN 105970139 B CN105970139 B CN 105970139B
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- hole
- buret
- workpiece
- micropore
- solenoid valve
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000008569 process Effects 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 title claims abstract description 18
- 238000004448 titration Methods 0.000 title claims abstract description 16
- 238000007751 thermal spraying Methods 0.000 title abstract description 3
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 238000000576 coating method Methods 0.000 claims abstract description 24
- 239000011248 coating agent Substances 0.000 claims abstract description 23
- 238000005507 spraying Methods 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000007711 solidification Methods 0.000 claims description 10
- 230000008023 solidification Effects 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- 239000012153 distilled water Substances 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 239000000084 colloidal system Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 239000000839 emulsion Substances 0.000 claims description 2
- 238000013007 heat curing Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims 1
- 230000008021 deposition Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 5
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000012720 thermal barrier coating Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 210000003462 vein Anatomy 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
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
A titration hole sealing device and method in micropore in thermal spraying process, the device includes container to contain titration liquid, electromagnetic valve connected with container through steel pipeline, burette connected with electromagnetic valve through soft pipeline, the burette is clamped in the support, the support is installed on guide rail, the guide rail is connected with horizontal motor, through the horizontal motor drive, realize the horizontal movement; a workpiece with circular vertical cooling holes and oval inclined cooling holes is arranged at the bottom of the burette and is 3-100mm away from the outlet of the burette, and the workpiece is arranged in a position that each row of cooling holes is parallel to the guide rail; the curing device is connected with the pulse generator, is arranged on the side surface of the burette and aims at the position needing to be titrated and sealed; the pulse generator, the electromagnetic valve and the horizontal driving motor are connected with the controller; the invention also discloses a hole sealing method of the device; so as to prevent the blockage of the air film cooling micropores by the deposition material in the spraying process, improve the universality of the method and the integrity of the coating at the periphery of the micropores, and reduce the post-treatment workload after spraying.
Description
Technical field
The invention belongs to field of surface engineering technique, and in particular to prepared by a kind of face coat prevents with micropore in spraying process
Stifled device and method.
Background technology
The components such as gas turbine combustion cylinder, changeover portion, nozzle, turbine blade all have substantial amounts of micropore, by these
Cooling air-flow is passed through in the micropore of component, so as to form cooling air film in blade surface, reaches and important component body is significantly dropped
The purpose of temperature.In actual application, since these components are Celsius close to 1500 towards high temperature environment, maximum temperature
Degree, the temperature extremes that can be born in itself considerably beyond high temperature alloy can be by high temperature alloy using gas cooling and thermal barrier coating
Blade surface temperature is reduced to 800-900 DEG C.In thermal barrier coating spraying process, due to boundary effect, it may occur that micropore sectional area
Phenomena such as reduction, micropore closure, (is referred to as and blocks), reduces the cooling effectiveness of component, or even due to Local cooling deficiency, cause leaf
The ablation of piece local overheating damages, and makes a very bad impression to unit safety and operating status.In high-temperature component first time manufacturing process
In, using laser processing, capillary processing can be carried out to component after combustion engine blade spray-on coating, but due to Laser Processing
Fuel factor and coating and matrix between thermal expansion mismatch, between coating and high temperature alloy formed microfissure defect, lead
Coating is caused to be peeled off too early during military service.Can also use spraying after, artificial mechanism polishing repair mode, to produce shrinkage cavity and
The position of closure is repaired, and this mode easily causes Interface Cracking in boundary, and coating life is impacted, to people's
Skill requirement is high, its chance of success is low, repairing effect and unobvious.Preferable coating boundaries should be with grading structure,
In order to obtain this preferable structure, patent CN102443752A proposes a kind of in blade interior cooling duct feeding indifferent gas
Body, such as argon gas, make in blade spraying process, and the particle of fusing does not deposit in micropore is cooled down, and are being sprayed so as to fulfill micropore is prevented
Blocked in painting.This method actually can not effectively obtain ideal structure, in spraying process, due to lifting for air-flow
Effect, can form cantilever design coating above cooling hole, and coating bottom does not have metallic matrix support, follow-up to need largely to repair
Return to work work.CN204385279U propose combustion engine blade air film hole spraying process in preventing clogging up device actually with
CN102443752A is similar, is all to prevent the cooling hole in blade from being blocked in spraying process using gas, its shortcoming
It is that can produce cantilever coating structure, the processing work in coating later stage is considerably complicated.AM General company CN103388118A patents
Employed for vertical pore structure in plunger insertion cooling hole, this mode can realize intact protection for upright opening, to inclining
Inclined hole, this plunger does not apply to, and poor universality.CN101772587A proposes a kind of device, logical in cooling by the device
Water is passed through in road, and water cooling is frozen into the method for ice by refrigerant, to prevent from blocking, this method and ventilated in passage
Method is similar, and in spraying process, the contact of thermal spraying flame stream can make the ice on top layer occur to melt and vaporize, and the current of thawing are made
The water vapour that reduction, vaporization into anchoring strength of coating produce can equally make the coating around hole produce cantilever design, with
Effect described in CN102443752A patents is similar, it is still desirable to substantial amounts of later stage grinding process work.Therefore the present invention is directed to
The shortcomings that above method, it is proposed that it is a kind of quickly to realize that micropore spraying process prevents the device and method blocked, with the side of raising
Integrality of the versatility, coating of method around hole.
To sum up, in order to solve the blockage problem of blade cooling hole in thermal spray process, it is necessary to be directed to it is vertical, tilt,
Micropore not of uniform size develops a kind of general micropore preventing clogging up device and method.
The content of the invention
It is spray coated to prevent present invention aims at titration hole sealing device and method in a kind of thermal spray process micropore of offer
Blocking of the deposition materials to gaseous film control micropore in journey, and improve this method versatility and micropore periphery coating it is complete
Property, reduce the post processing workload after spraying.
In order to achieve the above object, the present invention adopts the following technical scheme that：
Hole sealing device is titrated in a kind of thermal spray process micropore, including contains the container 1 of titrating solution 2, passes through steel pipeline 3
The solenoid valve 4 being connected with container 1, the buret 7 being connected by software pipeline 5 with solenoid valve 4, buret 7 are held on stent 6
In, stent 6 is installed on guide rail 8, and guide rail 8 is connected with horizontal motor 13, is driven by horizontal motor 13, realization moves horizontally；
The workpiece 11 in the inclined cooling plate hole 12 with circular vertical cooling hole 10 and ellipse is placed in the bottom of buret 7, with buret 7
Outlet port makes every row's cooling hole parallel with guide rail 8 at a distance of the position that 3-100mm, workpiece 11 are placed；Solidification equipment 9 and arteries and veins
Rush generator 14 to connect, and be installed on the side of buret 7, alignment needs to titrate the position of sealing of hole；The impulse generator 14,
Solenoid valve 4, horizontal drive motor 13 are connected with controller 15.
The form of the titrating solution 2 is emulsion form, hangs solidifying shape or colloidal, and the material of titrating solution is thermal curable and tool
There are water-soluble first class fiber, resin or the colloid of swelling character.
The solidification equipment 9 is irradiation lamp, microwave oven, drying baker or thermal current solidification equipment.
The irradiation lamp uses ultraviolet irradiation lamp, microwave irradiation lamp or infrared radiation lamp.
The method for sealing of hole sealing device is titrated in a kind of above-mentioned thermal spray process micropore, Cheng Qian is crossed implementing sealing of hole, it is first
First measure the centre-to-centre spacing between the cooling hole on workpiece 11 surface, and by the centre-to-centre spacing input controller 15, as horizontal drive
The amount of movement of motor 13, and residence time after each movement is set, in the period, controller 15 is by controlling solenoid valve
4, realize that titration is acted to air-flow buret, open solenoid valve, titrating solution 2 is flowed into buret 7, in titration process, is passed through
Controller 15 makes solenoid valve 4 open very short time 0-30s, which answers enough titrating solutions to export to form water droplet in buret
Shape, and drop onto at the micropore that 11 surface of workpiece needs block, the micro-convex structure drop that micropore surface is formed is in solidification equipment 9
Under heat cure effect, solid micro-convex structure is formed；Workpiece 11 is put into distilled water, acetone or alcohol after spraying and soaks 0.5-
After 5h, micro-convex structure can remove, and coating damage can't occur.
For the inclined cooling plate hole 12 of circular vertical cooling hole 10 and ellipse, dripped in titration process by adjusting replacement
Fixed tube outlet size obtains the micro-convex structure size needed.
Compared to the prior art, the invention has the advantages that：
1) titrating solution that the present invention uses can be based on surface tension, be automatically formed at micropore according to microcellular structure and shape
Micro-convex structure, improves versatility and closure efficiency.
2) damage for causing coating is removed the invention avoids plugging material after spraying, and reduces coating post processing work
Amount, improves production efficiency.
3) present invention employs pulsed irradiation lamp to be heating and curing, and temperature occurs only at workpiece surface, it is not necessary to right
Workpiece is integrally heated, and solidification temperature is low, and workpiece will not be impacted.
Brief description of the drawings
Fig. 1 is microtiter hole sealing device structure diagram of the present invention.
Fig. 2 is titration liquid status and coating structure schematic diagram, and wherein Fig. 2 a are the titration liquid status of circular vertical cooling hole
And coating structure, Fig. 2 b are the titration liquid status and coating structure in the inclined cooling plate hole of ellipse, in figure, 16- micro-convex structures,
17- high temperature alloy bodies, 18- coatings.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
For the combustion turbine first order movable vane that need to spray thermal barrier coating, between the cooling hole for measuring 11 surface of workpiece first
Centre-to-centre spacing, and by the centre-to-centre spacing input controller 15, as the amount of movement of horizontal drive motor 13, and set each movement
The residence time is 10s afterwards.Secondly, water-soluble first class cellulose is dissolved in a certain amount of water, forms outstanding solidifying shape titrating solution, and will
Titrating solution 2 is placed in container 1, and container 1 is connected with steel pipeline 3, then is connected with solenoid valve 4, will be titrated using software pipeline 5
Pipe 7 and the outlet of solenoid valve 4 connection.Then buret 7 is installed in stent 6.Stent 6 is installed on guide rail 8, and guide rail 8 passes through
Horizontal drive motor 13 drives, and realization moves horizontally, and motor is connected with controller 15, is connected solenoid valve 4 with controller 15.
Solidification equipment 9 is connected with impulse generator 14, impulse generator 14 is connected with controller 15.Device such as Fig. 1 after connection
It is shown.Solenoid valve 4 is opened, titration is flowed into buret, full of buret, buret is exported into unnecessary titrating solution and is removed
Afterwards, solenoid valve 4 is closed, titrates bottom of the tube no longer trickle at this time.After completing above preparation, it will carry circular vertical cold
But the workpiece 11 in hole 10 and the inclined cooling plate hole 12 of ellipse is positioned over the bottom of buret 7, with buret outlet port apart
About 20mm, in the placement process of workpiece 11, makes every row's cooling hole parallel with guide rail 8.The hole that first needs is blocked and drop
Fixed tube bottom alignment, opens power supply, allows solenoid valve 4 to open, and under pressure, titrating solution exports to form drop in buret,
And be dropped in the micropore for needing to block, while solidification equipment 9 is opened, after Short Time Heating, which cures, micro-
Micro-convex structure is formed at hole exits, as shown in Fig. 2 a and Fig. 2 b in Fig. 2.Then controller driving horizontal motor moves buret
Move next position to be titrated.After all titration work is completed, workpiece can be sprayed, after spraying, treat work
Part is cooled to room temperature, and puts the workpiece in and 2h is soaked in distilled water, removes the micro-convex structure of closure.Micropore periphery need not be carried out
Any mechanical prosthesis, to that will not produce damage around micropore, will not produce the coating of cantilever design.
Claims (4)
1. titrate hole sealing device in a kind of thermal spray process micropore, it is characterised in that：Container (1) including containing titrating solution (2),
The solenoid valve (4) being connected by steel pipeline (3) with container (1), the titration being connected by software pipeline (5) with solenoid valve (4)
Manage (7), buret (7) is held in stent (6), and stent (6) is installed on guide rail (8), and guide rail (8) connects with horizontal motor (13)
Connect, driven by horizontal motor (13), realization moves horizontally；Inclined cooling plate with circular vertical cooling hole (10) and ellipse
The workpiece (11) in hole (12) is placed in the bottom of buret (7), is put with buret (7) outlet port at a distance of 3-100mm, workpiece (11)
The position put, makes every row's cooling hole and guide rail (8) parallel；Solidification equipment (9) is connected with impulse generator (14), and is installed on
The side of buret (7), alignment need to titrate the position of sealing of hole；The impulse generator (14), solenoid valve (4), horizontal drive
Motor (13) is connected with controller (15)；
The form of the titrating solution (2) is emulsion form, outstanding solidifying shape or colloidal, the material of titrating solution for thermal curable and have
Water-soluble first class cellulose, resin or the colloid of swelling character；
The solidification equipment (9) is irradiation lamp, microwave oven or drying baker.
2. titrate hole sealing device in a kind of thermal spray process micropore according to claim 1, it is characterised in that：The irradiation
Lamp uses ultraviolet irradiation lamp, microwave irradiation lamp or infrared radiation lamp.
3. titrating the method for sealing of hole sealing device in a kind of thermal spray process micropore of claim 1 to 2 any one of them, it is special
Sign is：Cheng Qian is crossed implementing sealing of hole, measures the centre-to-centre spacing between the cooling hole on workpiece (11) surface first, and by the centre-to-centre spacing
In input controller (15), as the amount of movement of horizontal drive motor (13), and residence time after each movement is set, should
In period, controller (15) realizes air-flow buret titration acts, opens solenoid valve, will drip by controlling solenoid valve (4)
Determine liquid (2) to flow into buret (7), in titration process, solenoid valve (4) is opened very short time 0-30s by controller (15),
The period answers enough titrating solutions to export to form drops in buret, and drops onto the micropore that workpiece (11) surface needs to block
Place, the micro-convex structure drop that micropore surface is formed form solid micro-convex structure under the heat cure effect of solidification equipment (9)；
Workpiece (11) is put into distilled water, acetone or alcohol after immersion 0.5-5h after spraying, micro-convex structure can remove, can't
Generation coating damage.
4. method for sealing according to claim 3, it is characterised in that：For circular vertical cooling hole (10) and oval
Inclined cooling plate hole (12), obtains the micro-convex structure size needed in titration process by adjusting replacement buret outlet size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610547892.6A CN105970139B (en) | 2016-07-12 | 2016-07-12 | Titration hole sealing device and method in micropores in thermal spraying process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610547892.6A CN105970139B (en) | 2016-07-12 | 2016-07-12 | Titration hole sealing device and method in micropores in thermal spraying process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105970139A CN105970139A (en) | 2016-09-28 |
| CN105970139B true CN105970139B (en) | 2018-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610547892.6A Active CN105970139B (en) | 2016-07-12 | 2016-07-12 | Titration hole sealing device and method in micropores in thermal spraying process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105970139B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772587A (en) * | 2008-03-14 | 2010-07-07 | 西门子公司 | Method for masking cooling holes and device for using in a masking process for masking cooling holes |
| CN103388118A (en) * | 2012-05-11 | 2013-11-13 | 通用电气公司 | Method of coating component, method of forming cooling hole, and water soluble aperture plug |
| CN104700196A (en) * | 2013-12-06 | 2015-06-10 | 通用电气公司 | Automated masking of cooling apertures |
| CN205803572U (en) * | 2016-07-12 | 2016-12-14 | 华能国际电力股份有限公司 | Titration hole sealing device in hot spraying process micropore |
-
2016
- 2016-07-12 CN CN201610547892.6A patent/CN105970139B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772587A (en) * | 2008-03-14 | 2010-07-07 | 西门子公司 | Method for masking cooling holes and device for using in a masking process for masking cooling holes |
| CN103388118A (en) * | 2012-05-11 | 2013-11-13 | 通用电气公司 | Method of coating component, method of forming cooling hole, and water soluble aperture plug |
| CN104700196A (en) * | 2013-12-06 | 2015-06-10 | 通用电气公司 | Automated masking of cooling apertures |
| CN205803572U (en) * | 2016-07-12 | 2016-12-14 | 华能国际电力股份有限公司 | Titration hole sealing device in hot spraying process micropore |
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| Publication number | Publication date |
|---|---|
| CN105970139A (en) | 2016-09-28 |
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