CN209021903U - A kind of device of abrasive water-jet removal metal component surface thermal barrier coating - Google Patents
A kind of device of abrasive water-jet removal metal component surface thermal barrier coating Download PDFInfo
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- CN209021903U CN209021903U CN201821565432.7U CN201821565432U CN209021903U CN 209021903 U CN209021903 U CN 209021903U CN 201821565432 U CN201821565432 U CN 201821565432U CN 209021903 U CN209021903 U CN 209021903U
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- Prior art keywords
- barrier coating
- thermal barrier
- power supply
- jet
- jet nozzle
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- 239000012720 thermal barrier coating Substances 0.000 title claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 title claims abstract description 20
- 238000001802 infusion Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000012806 monitoring device Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 14
- 239000007769 metal material Substances 0.000 claims abstract description 7
- 230000007935 neutral effect Effects 0.000 claims abstract description 6
- 150000003839 salts Chemical class 0.000 claims abstract description 6
- 239000002253 acid Substances 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims 1
- 238000005260 corrosion Methods 0.000 claims 1
- 238000005868 electrolysis reaction Methods 0.000 abstract description 6
- 239000011159 matrix material Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 15
- 230000003628 erosive effect Effects 0.000 description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- 238000009760 electrical discharge machining Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000000576 coating method Methods 0.000 description 6
- 238000003487 electrochemical reaction Methods 0.000 description 6
- 239000003082 abrasive agent Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 239000011780 sodium chloride Substances 0.000 description 5
- 239000012224 working solution Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000005518 electrochemistry Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
A kind of device of abrasive water-jet removal metal component surface thermal barrier coating, it is characterized in that it includes the working liquid container for being marked with neutral salt electrolysis matter, infusion pump, infusion pipeline, jet nozzle, the processing groove for being marked with light liquid electric insulating medium, current monitoring device and DC power supply；The inlet of the infusion pump is connect by infusion pipeline with working liquid container, and the liquid outlet of the infusion pump is connect by infusion pipeline with jet nozzle；The jet nozzle is made of metal material；The cathode and jet nozzle of the DC power supply are electrically connected, and the anode of the DC power supply is electrically connected with the position of uncoated thermal barrier coating on workpiece；Workpiece is placed on processing groove and is immersed in light liquid electric insulating medium；In the current monitoring device series connection access DC power supply circuit.The utility model structure is simple, and removal is controllable.
Description
Technical field
The utility model relates to going for a kind of surface covering removal technology, especially a kind of metal component surface thermal barrier coating
Except technology, specifically a kind of metal component surface based on abrasive water jet Flow Technique that can accurately control thermal barrier coating removal
The removal device of thermal barrier coating.
Background technique
Thermal barrier coating is prepared in aero-engine metal component surface, for raising metal component temperature capability, significantly
Improving engine operating temperature has very direct effect.Therefore, Thermal Barrier Coating Technologies have been widely used in aero-engine
Turbo blade, combustion chamber guide vane, chamber wall etc..Often design has a large amount of film cooling holes on above-mentioned metal component
Road, therefore, processing gaseous film control duct on the metal component for be coated with thermal barrier coating becomes aero-engine manufacturing enterprise face
The problem faced.Currently, the air film hole on blade of aviation engine mainly uses electric spark-erosion perforation method to be processed, due to
Thermal barrier coating is ceramic material, has electrical insulating property, and therefore, electric spark-erosion perforation method not can be used directly adding in air film duct
Work.Currently used solution is: coating thermal barrier coating process is placed on after electric spark-erosion perforation process.But meeting in this way
Lead to machined molding air film hole aperture coated material part or all blocking, it is also necessary to artificial to remove gaseous film control aperture
Extra coating material, time-consuming, low efficiency.
It is expected to solve the problems, such as that thermal barrier coating blocks air film hole using the method punched after thermal barrier coating is first coated.This side
One technical solution of method is: firstly, being formed using the thermal barrier coating on abrasive waterjet cutting method removal air film hole site
Thermal barrier coating pass；Secondly, using the pass of electric spark-erosion perforation method processing metallic matrix.The advantages of this technical solution, is
Process costs are low.This technical solution faces a problem: when thermal barrier coating is processed in abrasive water-jet erosion, needing to judge
Whether the metallic matrix of jet erosion position is completely exposed, it is ensured that subsequent electric spark-erosion perforation process can be carried out effectively.And it is hot
The thickness of barrier coating is often uneven, brings difficulty to the solution of the above problem.
Utility model content
The purpose of this utility model be for it is existing there is water jet to remove metal component surface thermal barrier coating when, can not be timely
The problem of judgement removal situation, designs a kind of metal component surface thermal barrier coating that can reflect thermal barrier coating removal situation in real time
The device of removal.The utility model removes thermal barrier coating using abrasive water-jet erosion, forms thermal barrier coating hole shape, while online
Monitor the erosion removal rate of thermal barrier coating, the feasibility of the electric spark-erosion perforation process of effective guarantee subsequent metal matrix.
The technical solution of the utility model includes:
A kind of device of abrasive water-jet removal metal component surface thermal barrier coating, it is characterized in that it includes being marked with neutral salt
The working liquid container 1 of electrolyte, infusion pump 2, infusion pipeline 3, jet nozzle 4, the processing groove for being marked with light liquid electric insulating medium
6, current monitoring device 7 and DC power supply 8；The inlet of the infusion pump 2 is connect by infusion pipeline 3 with working liquid container 1, institute
The liquid outlet for stating infusion pump 2 is connect by infusion pipeline 3 with jet nozzle 4；The jet nozzle is made of metal material；It is described
The cathode and jet nozzle 4 of DC power supply 8 are electrically connected, anode and the uncoated thermal barrier coating on workpiece 5 of the DC power supply 8
Position electrical connection；Workpiece 5 is placed on processing groove 6 and is immersed in light liquid electric insulating medium；The current monitoring dress
It sets in 7 series connection access DC power supply circuit.
The beneficial effects of the utility model are:
The utility model removes metal component surface thermal barrier coating using abrasive waterjet cutting method, utilizes electrochemistry sun
Pole solution principle judge metallic matrix whether completely it is exposed, it is ensured that subsequent electric spark-erosion perforation technique is gone on smoothly, technique at
This is low.Meanwhile the utility model using light liquid electric insulating medium as shielding medium, effectively shield flow jet work liquid with
By-pass current between metallic matrix, it is ensured that electric current shown by current monitoring device is the electrochemistry of jet stream injection processing position
Anodic dissolution current.
Detailed description of the invention
Fig. 1 is the schematic diagram of the device of abrasive water-jet removal metal parts surface heat barrier coating described in the utility model.
In Fig. 1: 1, work tank, 1.1, abrasive material aqueous working solution, 2, infusion pump, 3, infusion pipeline, 4, jet nozzle, 4.1,
Abrasive water jet flow liquid beam, 5, workpiece, 5.1, workpiece surface thermal barrier coating, 6, processing groove, 6.1, light liquid electric insulating medium, 7,
Current monitoring device, 8, DC power supply.
Specific embodiment
Structure Figure and specific embodiment are further described the utility model below.
Implement one.
As shown in Figure 1.
A kind of device of abrasive water-jet removal metal component surface thermal barrier coating, it includes being marked with neutral salt electrolysis matter
Working liquid container 1, infusion pump 2, infusion pipeline 3, jet nozzle 4(are made of the metal material that acid and alkali resistance is corroded), be marked with lightweight liquid
Processing groove 6, current monitoring device 7 and the DC power supply 8 of state electric insulating medium；The inlet of the infusion pump 2 passes through perfusion tube
Road 3 is connect with working liquid container 1, and the liquid outlet of the infusion pump 2 is connect by infusion pipeline 3 with jet nozzle 4；The jet stream spray
Mouth is made of metal material；The cathode of the DC power supply 8 and jet nozzle 4 are electrically connected, the anode of the DC power supply 8 with
The position electrical connection of uncoated thermal barrier coating on workpiece 5；Workpiece 5 is placed on processing groove 6 and is immersed in light liquid electrical isolation
In medium；In the series connection of the current monitoring device 7 access DC power supply circuit.
The working principle of the utility model is: starting infusion pump 2, opens DC power supply 8, starts abrasive water-jet erosion and go
Except piece surface thermal barrier coating, the electric current in electric power loop is monitored by current monitoring device 7；When workpiece is by the gold at erosion position
When category matrix is not yet exposed, electrochemical reaction will not occur, do not have electric current to pass through in electric power loop, be shown on current monitoring device 7
Show that current value is 0；When metallic matrix starts exposed, due to containing sodium chloride electrolysis matter in jet stream liquid beam, in extra electric field
Under effect, electrochemical reaction is generated in metallic matrix exposed position, electric current conduction, current monitoring device are begun in electric power loop
7 start to show current value；With being continuously increased for the exposed rate of metallic matrix, the metallic area for participating in electrochemical reaction also constantly increases
Add, the current value in circuit is consequently increased, and the current value that current monitoring device 7 is shown constantly increases；When current monitoring device 7
When the current value of display reaches peak value, i.e. the thermal barrier coating at expression jet erosion position is entirely removed, and workpiece is by erosion position
Metallic matrix it is completely exposed；Abrasive material infusion pump 2 is shut down, DC power supply 8 is turned off, terminates processing.The neutral salt electrolysis matter
For the sodium chloride solution of mass percent concentration 1%.The light liquid electric insulating medium is not soluble in water, density ratio water
Small electric insulating medium.
Embodiment two.
As shown in Figure 1.
A kind of abrasive water-jet removal rate online test method of metal parts surface heat barrier coating, it includes following step
It is rapid:
1, sodium chloride (or similar neutral salt electrolysis matter) is added in the work tank 1 of abrasive waterjet cutting device,
So that sodium chloride content reaches 1% mass fraction in working solution, abrasive material working solution conductivity κ is detected, measuring κ is 12.37mS/cm,
By the nozzle that jet nozzle 2 is changed to metal material, diameter is 0.3mm；
2, workpiece 5 is clamped on the fixture of electrically insulating material production, the anode of DC power supply 8 is passed through into conducting wire and workpiece
The metallic matrix connection of uncoated thermal barrier coating on 5；The cathode of DC power supply 8 is connect by conducting wire with jet nozzle 4；By workpiece
It is fully immersed in light liquid electric insulating medium (can be electric insulating medium not soluble in water, density ratio water is small), electric current is examined
It surveys device 7 and accesses DC power supply circuit；The distance between nozzle 4 and workpiece 5 are adjusted and arrive 15mm；DC power supply 8 is exported into electricity
Pressure, which is adjusted, arrives 100V；
3, it is based on Anodic solution principle, calculates the electric current in the case of thermal barrier coating is completely removed by abrasive water-jet
Value, in formula: D is jet nozzle diameter, and d is the distance that nozzle arrives workpiece, and κ is abrasive material working solution conductivity, and U is
DC voltage；In the present embodiment, U 100V, κ 12.37mS/cm, D 0.3mm, d 15mm, be calculated I=
0.58mA；
4, start infusion pump 2, open DC power supply 8, start abrasive water-jet erosion and remove piece surface thermal barrier coating, lead to
Overcurrent monitoring device 7 monitors the electric current in electric power loop；It, will not when workpiece is not yet exposed by the metallic matrix at erosion position
Electrochemical reaction occurs, does not have electric current to pass through in electric power loop, shows that current value is 0 on current monitoring device 7；Work as metallic matrix
When starting exposed, due to containing sodium chloride electrolysis matter in jet stream liquid beam, under the action of extra electric field, in the exposed portion of metallic matrix
Position generates electrochemical reaction, and electric current conduction is begun in electric power loop, and current monitoring device 7 starts to show current value；With gold
Belong to the exposed rate of matrix to be continuously increased, the metallic area for participating in electrochemical reaction is also continuously increased, current value in circuit also with
Increase, current monitoring device 7 show current value constantly increase；When the current value that current monitoring device 7 is shown reaches peak value
When 0.58mA, i.e. the thermal barrier coating at expression jet erosion position is entirely removed, and workpiece is complete by the metallic matrix at erosion position
It is exposed；Abrasive material infusion pump 2 is shut down, DC power supply 8 is turned off, terminates processing.
The parts not involved in the utility model is same as the prior art or can be realized by using the prior art.
Claims (2)
1. a kind of device of abrasive water-jet removal metal component surface thermal barrier coating, it is characterized in that it includes being marked with neutral salt electricity
It solves the working liquid container (1) of matter, infusion pump (2), infusion pipeline (3), jet nozzle (4), be marked with light liquid electric insulating medium
Processing groove (6), current monitoring device (7) and DC power supply (8)；The inlet of the infusion pump (2) by infusion pipeline (3) with
The liquid outlet of working liquid container (1) connection, the infusion pump (2) is connect by infusion pipeline (3) with jet nozzle (4)；It is described to penetrate
Flow nozzle is made of metal material；The cathode of the DC power supply (8) and jet nozzle (4) are electrically connected, the DC power supply
(8) position of anode and uncoated thermal barrier coating on workpiece (5) is electrically connected；Workpiece (5) is placed on processing groove (6) and submerges
In light liquid electric insulating medium；In current monitoring device (7) the series connection access DC power supply circuit.
2. the device of abrasive water-jet removal metal component surface thermal barrier coating according to claim 1, it is characterised in that:
The jet nozzle is the metal product made of the metal material of acid and alkali resistance corrosion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821565432.7U CN209021903U (en) | 2018-09-26 | 2018-09-26 | A kind of device of abrasive water-jet removal metal component surface thermal barrier coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821565432.7U CN209021903U (en) | 2018-09-26 | 2018-09-26 | A kind of device of abrasive water-jet removal metal component surface thermal barrier coating |
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| Publication Number | Publication Date |
|---|---|
| CN209021903U true CN209021903U (en) | 2019-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821565432.7U Active CN209021903U (en) | 2018-09-26 | 2018-09-26 | A kind of device of abrasive water-jet removal metal component surface thermal barrier coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109202733A (en) * | 2018-09-26 | 2019-01-15 | 南京航空航天大学 | A kind of minimizing technology and device of metal component surface thermal barrier coating |
| CN113106532A (en) * | 2021-04-07 | 2021-07-13 | 江苏源清动力技术有限公司 | Process for removing thermal barrier coating of thermal component of aero-engine and gas turbine |
| CN115284179A (en) * | 2022-08-12 | 2022-11-04 | 武汉大学 | Abrasive material fluidic device based on self-reaction generates |
-
2018
- 2018-09-26 CN CN201821565432.7U patent/CN209021903U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109202733A (en) * | 2018-09-26 | 2019-01-15 | 南京航空航天大学 | A kind of minimizing technology and device of metal component surface thermal barrier coating |
| CN113106532A (en) * | 2021-04-07 | 2021-07-13 | 江苏源清动力技术有限公司 | Process for removing thermal barrier coating of thermal component of aero-engine and gas turbine |
| CN115284179A (en) * | 2022-08-12 | 2022-11-04 | 武汉大学 | Abrasive material fluidic device based on self-reaction generates |
| CN115284179B (en) * | 2022-08-12 | 2024-02-27 | 武汉大学 | Abrasive jet device based on self-reaction generation |
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