CN106111589A - The minimizing technology of engine fan case inwall seal coating - Google Patents
The minimizing technology of engine fan case inwall seal coating Download PDFInfo
- Publication number
- CN106111589A CN106111589A CN201610477195.8A CN201610477195A CN106111589A CN 106111589 A CN106111589 A CN 106111589A CN 201610477195 A CN201610477195 A CN 201610477195A CN 106111589 A CN106111589 A CN 106111589A
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- CN
- China
- Prior art keywords
- pressure
- seal coating
- mpa
- water
- coating
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
- B08B7/026—Using sound waves
- B08B7/028—Using ultrasounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
- B08B2203/0288—Ultra or megasonic jets
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The minimizing technology of a kind of engine fan case inwall seal coating of disclosure of the invention, it is desirable to provide a kind of environmentally safe, in removal process, comb remains intact, it is possible to the method removing seal coating under the hydraulic pressure less than 40 MPa.The technical scheme is that: using ultrasonic frequency is 20 kHz, high-pressure water pressure is (35～36) MPa, and jet length is (18～20) mm, and spray angle is 90 °, the linear velocity that spray gun moves is 10 mm/s, sweep span 1 mm.High-voltage pulse water jet parameter；By in ultrasonic wave-coupled to the pure water of 40 MPa pressures below, form high-voltage pulse water jet, utilize the dual function of ultrasound wave and water under high pressure to be removed by the seal coating of fancase.The present invention solves prior art and uses (80～500) MPa high-pressure water cleaning technique to remove removing coating, and hydraulic pressure pressure is high, and by the seal coating of fancase, equipment requirements height could be removed dry cost disadvantage.
Description
Technical field
The present invention relates to a kind of minimizing technology being mainly used in fancase inwall seal coating.
Technical background
Aerial engine fan casing is board type members, needs in the fabrication process to spray one layer of about (0.5～1.0) mm's
Abradable type seal coating, seal coating is double-decker, and bottom is metal coating, and surface layer is composite powder coatings.Used
Journey exceeds standard owing to making coating be worn on mill with fan blade, it is frequently necessary to replacing during engine overhaul and obturage painting
Layer.The conventional method removing seal coating is to use blasting method to remove, but the method is not suitable for casing seal coating,
This is mainly on casing and the shape inclined edge surfaces of seal coating binding site is with between comb raised structures and comb projection
Being arranged with carding tooth surface, comb only has 0.5 mm thick, and when seal coating is removed in sandblasting, huge sand grains speed can be damaged on casing
Comb structure, the bond strength of seal coating after impact coating again.It addition, fancase is for be connected as a single entity with blade, for
TC4 titanium alloy material, removes old coating according to chemical method and matrix can cause damage, and do not meet environmental requirement.Along with height
The fast development of setting-out technology particularly high-pressure water cleaning technique, high-pressure water has obtained in coating removal field quickly sending out
Exhibition.At present, both at home and abroad the used hydraulic pressure removing removing coating is typically at (80～500) MPa, owing to pressure is high, high to equipment requirements,
It is badly in need of a kind of 40 MPa pressure that are less than and just can remove the new method of seal coating.
Summary of the invention
The present invention is directed to above-mentioned prior art existing problems, it is provided that a kind of low cost, environmentally safe, in removal process
Comb remains intact, it is possible to the method removing seal coating under the hydraulic pressure less than 40 MPa.
The above-mentioned purpose of the present invention can be reached by following measures, a kind of engine fan case inwall seal coating
Minimizing technology, it is characterised in that comprise the steps: use ultrasonic frequency be 20 kHz, high-pressure water pressure is 35～36
MPa, jet length is 18 mother's m name～20 mm, and spray angle is 90 °, and the linear velocity that spray gun moves is 10 mm/s, scanning room
Away from 1 mm.High-voltage pulse water jet parameter；By in ultrasonic wave-coupled to the pure water of 40 MPa pressures below, form high-tension pulse bath
Jet, utilizes the dual function of ultrasound wave and water under high pressure to be removed by the seal coating of fancase.
The present invention compares and has the advantages that with prior art.
The present invention, by ultrasonic wave-coupled to the pure water of 40 MPa pressures below, forms high-voltage pulse water jet, utilizes super
The seal coating of fancase is removed by the dual function of sound wave and water under high pressure, it is achieved that under the hydraulic pressure less than 40 MPa, complete
The full bottom removing seal coating and surface layer, AEI After End of Injection visual inspection comb structure is intact, bottom and the clearance of surface layer
Reaching 100%, in removal process, comb remains intact, non-environmental-pollution.Solve prior art and use (80～500) MPa superelevation
Setting-out cleaning technique removes removing coating, and hydraulic pressure pressure is high, the one-tenth could removed equipment requirements height by the seal coating of fancase
This problem.
The composite can be widely applied to the removal of old coating in the maintenance of aerial engine fan casing.
Detailed description of the invention
According to the present invention.Using ultrasonic frequency is 20 kHz, and high-pressure water pressure is (35～36) MPa, and jet length is
(18～20) mm, spray angle is 90 °, and the linear velocity that spray gun moves is 10mm/s, sweep span 1 mm.High-voltage pulse water-jet
Stream parameter；By in the ultrasonic wave-coupled of 20 kHz to the pure water of 40 MPa pressures below, form high-voltage pulse water jet, utilize super
The seal coating of fancase is removed by the dual function of sound wave and water under high pressure.
Embodiment 1
Certain aero-engine one-level fancase needs to remove the seal coating of one layer of about 1.0 mm, painting of obturaging during overhaul
Layer is double-decker, and bottom is NiAlW coating, and surface layer is AHB coating.Use the high-voltage pulse water jet method that the present invention provides
Remove this seal coating.The major parameter removing seal coating is: ultrasonic frequency is 20 kHz, and high-pressure water pressure is 36
MPa, jet length is 20 mm, and spray angle is 90 °, and the linear velocity that spray gun moves is 10mm/s, sweep span 1 mm.
Embodiment 2
Certain type aero-engine light breeze fan casing needs to remove the seal coating of one layer of about 1.0 mm during overhaul, obturages
Coating is double-decker, and bottom is NiAlW coating, and surface layer is AHB coating.Use the high-voltage pulse water jet side that the present invention provides
Method removes this seal coating.The major parameter removing seal coating is: ultrasonic frequency is 20 kHz, and high-pressure water pressure is 35
MPa, jet length is 18 mm, and spray angle is 90 °, and the linear velocity that spray gun moves is 10 mm/s, sweep span 1 mm.Injection
Visually inspecting comb structure after end intact, the clearance of bottom and surface layer reaches 100%, and the method can be widely applied to aviation
The removal of old coating in engine fan case maintenance.
Claims (1)
1. the minimizing technology of an engine fan case inwall seal coating, it is characterised in that comprise the steps: that employing is super
Frequency of sound wave is 20 kHz, and high-pressure water pressure is 35～36 MPa, and jet length is 18 mother's m name～20 mm, and spray angle is 90
°, the linear velocity that spray gun moves is 10 mm/s, sweep span 1 mm；High-voltage pulse water jet parameter；By ultrasonic wave-coupled to 40
In the pure water of MPa pressures below, form high-voltage pulse water jet, utilize the dual function of ultrasound wave and water under high pressure by fancase
Seal coating remove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610477195.8A CN106111589A (en) | 2016-06-27 | 2016-06-27 | The minimizing technology of engine fan case inwall seal coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610477195.8A CN106111589A (en) | 2016-06-27 | 2016-06-27 | The minimizing technology of engine fan case inwall seal coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106111589A true CN106111589A (en) | 2016-11-16 |
Family
ID=57267093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610477195.8A Pending CN106111589A (en) | 2016-06-27 | 2016-06-27 | The minimizing technology of engine fan case inwall seal coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106111589A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714202A (en) * | 2019-09-09 | 2020-01-21 | 中国人民解放军第五七一九工厂 | Method for removing aluminum oxide and titanium dioxide coating |
| CN113458978A (en) * | 2021-05-27 | 2021-10-01 | 中国航发南方工业有限公司 | Method for repairing sealing coating on inner surface of deep hole structure part |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811121A (en) * | 2009-02-24 | 2010-08-25 | 任保林 | Vehicle-mounted eddy strong pulse resonant jet cleaning device |
| CN101912853A (en) * | 2010-09-03 | 2010-12-15 | 任保林 | Rust-removing cleaning device for ultrasonic pulse water jet pipe wall |
| CN104174605A (en) * | 2014-08-27 | 2014-12-03 | 西安远诚机电科技有限公司 | Pulse water jet coating peeling and finishing equipment |
-
2016
- 2016-06-27 CN CN201610477195.8A patent/CN106111589A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811121A (en) * | 2009-02-24 | 2010-08-25 | 任保林 | Vehicle-mounted eddy strong pulse resonant jet cleaning device |
| CN101912853A (en) * | 2010-09-03 | 2010-12-15 | 任保林 | Rust-removing cleaning device for ultrasonic pulse water jet pipe wall |
| CN104174605A (en) * | 2014-08-27 | 2014-12-03 | 西安远诚机电科技有限公司 | Pulse water jet coating peeling and finishing equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714202A (en) * | 2019-09-09 | 2020-01-21 | 中国人民解放军第五七一九工厂 | Method for removing aluminum oxide and titanium dioxide coating |
| CN113458978A (en) * | 2021-05-27 | 2021-10-01 | 中国航发南方工业有限公司 | Method for repairing sealing coating on inner surface of deep hole structure part |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161116 |