CN109202733A - A kind of minimizing technology and device of metal component surface thermal barrier coating - Google Patents
A kind of minimizing technology and device of metal component surface thermal barrier coating Download PDFInfo
- Publication number
- CN109202733A CN109202733A CN201811118709.6A CN201811118709A CN109202733A CN 109202733 A CN109202733 A CN 109202733A CN 201811118709 A CN201811118709 A CN 201811118709A CN 109202733 A CN109202733 A CN 109202733A
- Authority
- CN
- China
- Prior art keywords
- barrier coating
- thermal barrier
- workpiece
- jet nozzle
- metal component
- 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.)
- Pending
Links
- 239000012720 thermal barrier coating Substances 0.000 title claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 32
- 239000002184 metal Substances 0.000 title claims abstract description 32
- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 239000011159 matrix material Substances 0.000 claims abstract description 24
- 230000003628 erosive effect Effects 0.000 claims abstract description 17
- 239000000243 solution Substances 0.000 claims abstract description 12
- 239000012224 working solution Substances 0.000 claims abstract description 12
- 239000003082 abrasive agent Substances 0.000 claims abstract description 10
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 8
- 150000003839 salts Chemical class 0.000 claims abstract description 8
- 230000007935 neutral effect Effects 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 3
- 238000001802 infusion Methods 0.000 claims description 26
- 238000012545 processing Methods 0.000 claims description 22
- 238000012806 monitoring device Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical group [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- 239000007769 metal material Substances 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 5
- 238000004090 dissolution Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 238000005660 chlorination reaction Methods 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 17
- 238000009760 electrical discharge machining Methods 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 description 6
- 238000003487 electrochemical reaction Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 2
- 230000005684 electric field Effects 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
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
- B24C3/04—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other stationary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
A kind of minimizing technology and device of metal component surface thermal barrier coating.The present invention removes the thermal barrier coating of metal component surface by abrasive water-jet erosion, is ready for subsequent electric spark-erosion perforation.Neutral salt electrolysis matter is added in abrasive material working solution, so that abrasive material working solution is conductive, apply direct-current working volts between jet nozzle and metal component matrix, Faradaic current when thermal barrier coating is completely removed is calculated based on Anodic solution principle, judge whether the thermal barrier coating of abrasive water-jet erosion position is completely removed by monitoring the size of Faradaic current, easy to operate, process costs are low.Meanwhile the present invention uses light liquid electric insulating medium as screened film, it is ensured that the electric current in electric power loop is the Faradaic current at jet erosion position.
Description
Technical field
The present invention relates to a kind of surface covering removal technology, especially a kind of removal skill of metal component surface thermal barrier coating
Art, specifically a kind of metal component surface thermal boundary based on abrasive water jet Flow Technique that can accurately control thermal barrier coating removal
The minimizing technology and device of 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.
Summary of the invention
The purpose of the present invention is when having water jet to remove metal component surface thermal barrier coating, can not judge in time for existing
The problem of removing situation invents a kind of removal of metal component surface thermal barrier coating that can reflect thermal barrier coating removal situation in real time
Method, while a kind of corresponding device being provided.The present invention removes thermal barrier coating using abrasive water-jet erosion, forms thermal barrier coating
Hole shape, while monitoring the erosion removal rate of thermal barrier coating on-line, the electric spark-erosion perforation process of effective guarantee subsequent metal matrix
Feasibility.
One of technical solution of the present invention:
A kind of minimizing technology of metal component surface thermal barrier coating, it is characterized in that the following steps are included:
Workpiece is placed in processing groove by the first step, and light liquid electric insulating medium is added in processing groove, makes workpiece table to be processed
Face is totally submerged in light liquid electric insulating medium；Obtain the diameter dimension of jet nozzle；Jet nozzle is adjusted to wait for workpiece
The relative distance of finished surface；
Abrasive material aqueous working solution is added in work tank second step, and neutral salt electrolysis matter is added in work tank, obtains work
The conductivity of liquid；
Third step determines the DC voltage being applied between nozzle and workpiece when processing；Metallic matrix is calculated according to the following formula
Anodic dissolution current when completely exposed:
In formula, I is loop current when metallic matrix is completely exposed, d be jet nozzle and workpiece work surface it is opposite away from
From U is the DC voltage being applied between jet nozzle and workpiece metal matrix when processing, and D is nozzle diameter, and κ is working solution
Conductivity；π is pi constant；
Step 4: workpiece metal matrix is connect with DC power anode, jet nozzle is connect with DC power cathode；
Step 5: connecting the DC power supply being connected between jet nozzle and workpiece substrate, starts infusion pump, pass through jet nozzle
The erosion workpieces processing work surface in the form of abrasive water-jet is closed until the electric current shown on current monitoring device reaches I value
Disconnected DC power supply, shuts down abrasive water jet flow liquid beam, takes out workpiece.
The light liquid electric insulating medium is electric insulating medium not soluble in water, density ratio water is small.
The jet nozzle is made of the metal material that acid and alkali resistance is corroded.
Technical solution of the present invention second is that:
A kind of removal device of metal component surface thermal barrier coating, it is characterized in that it includes the working solution for being marked with neutral salt electrolysis matter
Case 1, infusion pump 2, infusion pipeline 3, jet nozzle 4, the processing groove 6 for being marked with light liquid electric insulating medium, current monitoring device 7
With DC power supply 8；The inlet of the infusion pump 2 is connect by infusion pipeline 3 with working liquid container 1, and the infusion pump 2 goes out liquid
Mouth is connect by infusion pipeline 3 with jet nozzle 4；The jet nozzle is made of metal material；The cathode of the DC power supply 8
It is electrically connected with jet nozzle 4, the anode of the DC power supply 8 is electrically connected with the position of uncoated thermal barrier coating on workpiece 5；
Workpiece 5 is placed on processing groove 6 and is immersed in light liquid electric insulating medium；The series connection of the current monitoring device 7 access direct current
In electric power loop.
The beneficial effects of the present invention are:
Metal component surface thermal barrier coating is removed using abrasive waterjet cutting method, is judged using Anodic solution principle
Whether metallic matrix is completely exposed, it is ensured that subsequent electric spark-erosion perforation technique is gone on smoothly, and process costs are low.Meanwhile this hair
It is bright that shielding medium is used as using light liquid electric insulating medium, effectively shield the bypass between flow jet work liquid and metallic matrix
Electric current, it is ensured that electric current shown by current monitoring device is the Anodic dissolution current of jet stream injection processing position.
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 of the present invention.
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
The present invention is further illustrated for Structure Figure and specific embodiment below.
Embodiment one.
As shown in Figure 1.
A kind of minimizing technology of metal component surface thermal barrier coating, it the following steps are included:
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, detects abrasive material working solution conductivity κ, and measuring κ is 12.37mS/cm, will penetrate
The nozzle that flow 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 on conducting wire and workpiece 5
The metallic matrix of uncoated thermal barrier coating connects；The cathode of DC power supply 8 is connect by conducting wire with jet nozzle 4；Workpiece is complete
Portion is immersed in light liquid electric insulating medium (can be electric insulating medium not soluble in water, density ratio water is small), by current detecting
Device 7 accesses DC power supply circuit；The distance between nozzle 4 and workpiece 5 are adjusted and arrive 15mm；By 8 output voltage of DC power supply
Adjust 100V；
3, it is based on Anodic solution principle, calculates the current value in the case of thermal barrier coating is completely removed by abrasive water-jet, 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 straight
Galvanic electricity pressure；In the present embodiment, U 100V, κ 12.37mS/cm, D 0.3mm, d 15mm, are 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, pass through electricity
Flow monitoring device 7 monitors the electric current in electric power loop；When workpiece is not yet exposed by the metallic matrix at erosion position, will not occur
Electrochemical reaction does not have electric current to pass through in electric power loop, shows that current value is 0 on current monitoring device 7；When metallic matrix starts
When exposed, due to containing sodium chloride electrolysis matter in jet stream liquid beam, under the action of extra electric field, produced in metallic matrix exposed position
Electrochemical reaction is given birth to, electric current conduction is begun in electric power loop, current monitoring device 7 starts to show current value；With Metal Substrate
The exposed rate of body is continuously increased, and the metallic area for participating in electrochemical reaction is also continuously increased, and the current value in circuit also increases therewith
Add, the current value that current monitoring device 7 is shown constantly increases；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.
Implement two.
As shown in Figure 1.
A kind of removal device of the metal component surface thermal barrier coating based on abrasive water-jet, it includes being marked with neutral salt electricity
Solve the working liquid container 1 of matter, infusion pump 2, infusion pipeline 3, jet nozzle 4, the processing groove 6 for being marked with light liquid electric insulating medium,
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, described
The liquid outlet of infusion pump 2 is connect by infusion pipeline 3 with jet nozzle 4；The jet nozzle is made of metal material；It is described straight
The cathode and jet nozzle 4 in galvanic electricity source 8 are electrically connected, the anode of the DC power supply 8 and uncoated thermal barrier coating on workpiece 5
Position electrical connection；Workpiece 5 is placed on processing groove 6 and is immersed in light liquid electric insulating medium；The current monitoring device 7
In series connection access DC power supply circuit.
The working principle of the present embodiment is: starting infusion pump 2 opens DC power supply 8, starts abrasive water-jet erosion removal
Piece surface thermal barrier coating monitors the electric current in electric power loop by current monitoring device 7；When workpiece is by the metal at erosion position
When matrix is not yet exposed, electrochemical reaction will not occur, do not have electric current to pass through in electric power loop, shown on current monitoring device 7
Current value is 0；When metallic matrix starts exposed, due to containing sodium chloride electrolysis matter in jet stream liquid beam, in the work of extra electric field
Under, electrochemical reaction is generated in metallic matrix exposed position, electric current conduction, current monitoring device 7 are begun in electric power loop
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.
Part that the present invention does not relate to is same as the prior art or can be realized by using the prior art.
Claims (6)
1. a kind of minimizing technology of metal component surface thermal barrier coating, it is characterised in that it includes the following steps:
Workpiece is placed in processing groove by the first step, and light liquid electric insulating medium is added in processing groove, makes workpiece table to be processed
Face is totally submerged in light liquid electric insulating medium；Obtain the diameter dimension of jet nozzle；Jet nozzle is adjusted to wait for workpiece
The relative distance of finished surface；
Abrasive material working solution is added in work tank second step, and neutral salt electrolysis matter is added in abrasive material working solution, obtains work
The conductivity of liquid；
Third step determines the DC voltage being applied between nozzle and workpiece when processing；Metallic matrix is calculated according to the following formula
Anodic dissolution current when completely exposed:
In formula, I is loop current when metallic matrix is completely exposed, d be jet nozzle and workpiece work surface it is opposite away from
From U is the DC voltage being applied between jet nozzle and workpiece metal matrix when processing, and D is nozzle diameter, and κ is working solution
Conductivity；π is pi constant；
Step 4: workpiece metal matrix is connect with DC power anode, jet nozzle is connect with DC power cathode；
Step 5: connecting the DC power supply being connected between jet nozzle and workpiece substrate, starts infusion pump, pass through jet nozzle
The erosion workpieces processing work surface in the form of abrasive water-jet, the current value in monitoring current monitoring device, until electric current is supervised
It surveys the electric current shown on device and reaches I value, turn off DC power supply, shut down abrasive water jet flow liquid beam, take out workpiece.
2. the minimizing technology of metal component surface thermal barrier coating according to claim 1, it is characterised in that: the jet stream
Nozzle is made of the metal material that acid and alkali resistance is corroded.
3. the minimizing technology of metal component surface thermal barrier coating according to claim 1, it is characterised in that: the neutrality
Salt electrolyte is sodium chloride solution.
4. the minimizing technology of metal component surface thermal barrier coating according to claim 3, it is characterised in that: the chlorination
The mass percent concentration 1% of sodium solution.
5. the minimizing technology of metal component surface thermal barrier coating according to claim 1, it is characterised in that: the lightweight
Liquid electric insulating medium is electric insulating medium not soluble in water, density ratio water is small.
6. a kind of removal device of metal component surface thermal barrier coating, it is characterized in that it includes the work for being marked with neutral salt electrolysis matter
Liquid case (1), infusion pump (2), infusion pipeline (3), jet nozzle (4), the processing groove (6) for being marked with light liquid electric insulating medium,
Current monitoring device (7) and DC power supply (8)；The inlet of the infusion pump (2) passes through infusion pipeline (3) and working liquid container
(1) it connects, the liquid outlet of the infusion pump (2) is connect by infusion pipeline (3) with jet nozzle (4)；The jet nozzle by
Metal material is made；The cathode of the DC power supply (8) and jet nozzle (4) are electrically connected, the anode of the DC power supply (8)
It is electrically connected with the position of uncoated thermal barrier coating on workpiece (5)；Workpiece (5) is placed on processing groove (6) and is immersed in lightweight liquid
In state electric insulating medium；In current monitoring device (7) the series connection access DC power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811118709.6A CN109202733A (en) | 2018-09-26 | 2018-09-26 | A kind of minimizing technology and device of metal component surface thermal barrier coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811118709.6A CN109202733A (en) | 2018-09-26 | 2018-09-26 | A kind of minimizing technology and device of metal component surface thermal barrier coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109202733A true CN109202733A (en) | 2019-01-15 |
Family
ID=64981374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811118709.6A Pending CN109202733A (en) | 2018-09-26 | 2018-09-26 | A kind of minimizing technology and device of metal component surface thermal barrier coating |
Country Status (1)
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8316526D0 (en) * | 1982-06-17 | 1983-07-20 | Brent Chemicals Int | Anodic coating removal monitor |
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| US20060226025A1 (en) * | 2005-03-16 | 2006-10-12 | Colorado School Of Mines | Electrochemical removal of die coatings |
| US20080038991A1 (en) * | 2006-05-25 | 2008-02-14 | Hunter John H | Submerged Fluid Jet Polishing |
| CN101244544A (en) * | 2008-03-26 | 2008-08-20 | 上海大学 | Burr removal method and apparatus for oil ejector body pressure regulating cavity |
| US20090229636A1 (en) * | 2005-06-10 | 2009-09-17 | Aeromet Technologies, Inc. | Methods for removing coatings from a metal component |
| US20100089768A1 (en) * | 2006-06-23 | 2010-04-15 | Jens Dahl Jensen | Method for the electrochemical removal of a metal coating from a component |
| CN102120314A (en) * | 2010-12-09 | 2011-07-13 | 中国科学院光电技术研究所 | Full-submerged jet polishing device and method |
| CN102573158A (en) * | 2012-01-05 | 2012-07-11 | 江苏舾普泰克自动化科技有限公司 | Method and device for removing electromagnetic induction type metallic surface coating |
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| WO2018145132A2 (en) * | 2017-02-01 | 2018-08-09 | Aeroment Technologies Soluton, Llc | Method and apparatus for removing coatings |
| CN209021903U (en) * | 2018-09-26 | 2019-06-25 | 南京航空航天大学 | A kind of device of abrasive water-jet removal metal component surface thermal barrier coating |
-
2018
- 2018-09-26 CN CN201811118709.6A patent/CN109202733A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8316526D0 (en) * | 1982-06-17 | 1983-07-20 | Brent Chemicals Int | Anodic coating removal monitor |
| US20060079157A1 (en) * | 2002-12-31 | 2006-04-13 | Hedser Van Brug | Apparatus and method for manufacturing or working optical elements and/or optical forming elements, and such element |
| US20060226025A1 (en) * | 2005-03-16 | 2006-10-12 | Colorado School Of Mines | Electrochemical removal of die coatings |
| US20090229636A1 (en) * | 2005-06-10 | 2009-09-17 | Aeromet Technologies, Inc. | Methods for removing coatings from a metal component |
| US20080038991A1 (en) * | 2006-05-25 | 2008-02-14 | Hunter John H | Submerged Fluid Jet Polishing |
| US20100089768A1 (en) * | 2006-06-23 | 2010-04-15 | Jens Dahl Jensen | Method for the electrochemical removal of a metal coating from a component |
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| RU2011116352A (en) * | 2011-04-25 | 2012-10-27 | Общество с ограниченной ответственностью "Научно-производственное предприятие Вакууммаш" (RU) | METHOD FOR ELECTROLYTE-PLASMA REMOVAL OF COATINGS FROM TITANIUM NITRIDES OR NITRIDES OF TITANIUM COMPOUNDS WITH METALS |
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| CN209021903U (en) * | 2018-09-26 | 2019-06-25 | 南京航空航天大学 | A kind of device of abrasive water-jet removal metal component surface thermal barrier coating |
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