CN109048699A - A kind of method of preparation and use of aircraft coating removal amino film plastics abrasive material - Google Patents
A kind of method of preparation and use of aircraft coating removal amino film plastics abrasive material Download PDFInfo
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- CN109048699A CN109048699A CN201810783423.3A CN201810783423A CN109048699A CN 109048699 A CN109048699 A CN 109048699A CN 201810783423 A CN201810783423 A CN 201810783423A CN 109048699 A CN109048699 A CN 109048699A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
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- Food Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
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Abstract
A kind of method of preparation and use of aircraft coating removal amino film plastics abrasive material, belong to material surface polishing technical field, it is characterized in that first amino film plastics are crushed, amino film plastics particle that afterwards will be broken carries out particle crushing and screening, will screening gained different grain size rank particle be mixed in a certain ratio after the preparation method for carrying out a kind of amino film plastics abrasive material of abrasive air jet stream processing removal after abrasive material to aircraft coating is made.Wherein, aircraft coating is aircraft skin surface covering.After the amino film plastics abrasive material prepared by such method carries out the processing removal of abrasive air jet stream to aircraft coating, matrix surface finds no obvious damage, and coating removal works well, it can be achieved that efficient, green, the lossless removal of aircraft coating.Amino film plastics abrasive material also recoverable after use.
Description
Technical field
The present invention relates to a kind of aircraft coating removal abrasive material preparation method, especially a kind of aircraft coated abrasive gas jet stream
Removal abrasive material preparation method is processed, specifically a kind of aircraft coated abrasive gas jet stream processing removal is ground with amino film plastics
The preparation method and its usage of material.
Background technique
Aircraft coating can not only reduce aircraft in the process of running because temperature, humidity, medium, abrasion impact etc. are caused by factors
Influence, can also extend the service life of aircraft, its is made to keep good operating status, therefore, aircraft coating is to protection and control
Aircraft structure corrosion processed guarantees that Flight Safety plays a crucial role.But its surface covering will not in aircraft operation
It can avoid by temperature fluctuation, high-intensity ultraviolet irradiation, wet environment, chemical attack (such as fuel oil, hydraulic oil, cleaningization
Product), corrosion etc. influence, while also by bear high temperature, air pressure cataclysm, different air turbulent flow impact the effects of, in addition
Defect existing for coating itself easily causes coating to generate abrasion or fall off.To guarantee Flight Safety, once there is aircraft
Coating abrasion falls off, and needs that coating is removed and is coated in time.
Aircraft coating removal is one of important procedure during aircraft maintenance, is mainly gone at present using chemical depainting method
It removes, laser sintered removal, high-pressure water jet removes and the processing removal of abrasive air jet stream.Wherein, chemical depainting method is applied as aircraft
The main minimizing technology of layer easily causes personnel health's damage and environment (partially to use toxic though can remove surface covering
Property paint stripper) destroy etc. harm, and to aircraft matrix surface generate corrosion；High-pressure water jet method removes aircraft coating, sets
Standby higher cost, and it is not easy to control, and easily cause adhesive layer and matrix damage；Laser sintered method removes aircraft coating, and coating is gone
Except efficiency is lower, and easily lead to the defects of matrix surface is burnt.To solve the problems, such as that above-mentioned aircraft coating removal method exists, people
Begin one's study with efficient, lossless, green aircraft coating removal processing technology, the processing of abrasive air jet stream is exactly wherein
One of.
Abrasive air Jet Polishing processing (Abrasive Air Jet finishing-Machining, AAJM) is to utilize mill
Material and high velocity jet made of air or other gas mixings, impact directive workpiece through nozzle at high speeds, by surfacing
Micro removal reach clean surface and improve surface property surface finishing method.With other aircraft coating removal methods
It compares, processing removal aircraft coating using abrasive air jet stream can avoid the shadow that chemical depainting method generates environmental and human health impacts
It rings, and is remarkably improved coating removal processing efficiency.Meanwhile the processing of abrasive air jet stream also has good applicability and general
The advantages that property, structure are simple, at low cost, and the Substrate Surface Roughness after processing is uniform.
Though abrasive air jet stream processing removal aircraft coating has above-mentioned advantage, it is applied to aircraft coating removal and mainly deposits
The problem of be: the abrasive material used is mostly that (aluminium oxide, silicon carbide Mohs' hardness are big for the hard such as aluminium oxide, silicon carbide abrasive material
In 9), while removing aircraft coating, easily to aircraft basis material, ((hardness is about with 2024-T3 aluminium alloy plate for such as aircraft skin
Surface scratching and abrasive material is caused to be embedded in equivalent damage defect for 120HB)).And amino film plastics abrasive material is used to carry out aircraft coating
Abrasive air jet stream processing removal, since its abrasive grain has polyhedron angular and subangular structure, abrasive hardness (Mohs
Hardness about 3.5 ~ 4.5) be only silicon carbide, alumina abrasive hardness 1/2, therefore even can avoid aircraft skin matrix table reducing
Face is removed aircraft coating under conditions of generating damage.Simultaneously as abrasive air Jet Polishing technique to Workpiece structure and
Size no requirement (NR), processing rapid and convenient, flexible and convenient, controllability is strong, and amino film plastics abrasive material is with nontoxic, environmentally friendly etc. superior
Performance, therefore use the abrasive air jet stream processing technology of amino film plastics abrasive material that there is wide application in aircraft coating removal field
Prospect.Also rarely have both at home and abroad for the amino film plastics abrasive air jet stream processing method of aircraft coating removal at present and refers to.
Summary of the invention
The purpose of the present invention is apply the abrasive material used when the removal of abrasive air jet stream for existing aircraft easily to cause matrix
The problem of, it invents and a kind of prepares the aircraft coating removal amino film plastics abrasive material that easy to use, controllability is strong, nontoxic, environmentally friendly
Preparation method.
Technical solution of the present invention first is that:
A kind of preparation method of aircraft coating removal amino film plastics abrasive material, it is characterized in that being first put into brokenly amino film plastics
Be crushed in broken machine, then broken particle be put into pulverizer and is crushed, after be put into vibrating screen and be classified
Screening to granularity level is respectively<10 mesh, 10 ~ 16 mesh, 16 ~ 20 mesh, 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh, 50 ~ 60 mesh and>
60 mesh；The particle of screening gained different grain size rank is put by a certain percentage in ball mill and is stirred 8 ~ 15 minutes, particle is made
Full and uniform mixing obtains amino film plastics abrasive material.Gained abrasive material is mixed with air after forming high speed line, to coating surface
It carries out impact and removes removing coating.
The amino film plastics are broken to be carried out in blade type plastic breaker, and fixed blade of crusher piece is matched with cutting blade
To being 2 and 3 or 4 and 6 number, adjustment gap is 1 ~ 5mm between blade, and blade stiffness is HRC52 ~ 58, and cracking machine cribellum aperture is
8.0~Ø12.0mm。
The amino film plastics particle crushing is carried out in turbine type crushing machine, and rotor mill diameter is 130.0
~ 750.0mm, secondary speed are 2250 ~ 7500r/min.
The amino film plastics abrasive material is 4 kinds of different grain size ranks (20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh and 50 ~ 60
Mesh) particle mixed by certain mass percent: 20 ~ 30 mesh particles are that 10 ~ 20%, 30 ~ 40 mesh particles are 30 ~ 40%, 40 ~ 50
Mesh particle is that 30 ~ 40%, 50 ~ 60 mesh are≤30%.The sum of percentage of abrasive material of various partial sizes is 100%.
The amino film plastics abrasive grain is polyhedron angular and subangular structure, and abrasive material Mohs' hardness is
3.5 ~ 4.5, abrasive material bulk density is 0.65 ~ 0.85g/cm3。
The aircraft coating removal refers to mixes amino film plastics abrasive material with air in boron carbide nozzle, control
System injection pressure, spray distance and spray angle carry out high speed impact to coating surface.
The aircraft coating is the aircraft skin coating that basis material is 2024-T3 aluminium alloy plate.The method can also
Removal for other aircraft skin matrix surface coatings.
Technical solution of the present invention second is that:
A kind of aircraft coating removal method, it include abrasive material preparation and abrasive air jet stream processing, it is characterized in that:
The abrasive material prepares following steps:
It is crushed firstly, amino film plastics are put into crusher, obtains amino film plastics particle；
It is crushed secondly, broken obtained amino film plastics particle is put into pulverizer；
Smashed amino film plastics particle is put into vibrating screen and carries out sizing screening, respectively obtains granularity level by third
The amino of respectively<10 mesh, 10 ~ 16 mesh, 16 ~ 20 mesh, 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh, 50 ~ 60 mesh and>60 mesh molds
Expect particle；
4th, by screening 4 kinds of different grain size ranks of gained: the amino of 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh and 50 ~ 60 mesh molds
Expect particle by mass percentage are as follows: 20 ~ 30 mesh particle, 10 ~ 20%, 30 ~ 40 mesh particle be 30 ~ 40%, 40 ~ 50 mesh particles be 30 ~
40%, 50 ~ 60 mesh are mixed for≤30%, and the particle of mixed different grain size rank is put into ball mill by a certain percentage and is stirred
8 ~ 15 minutes, make the full and uniform mixing of particle, obtains aircraft coating removal amino film plastics abrasive material；
The abrasive air jet stream processing refers to:
It carries out gained aircraft coating removal amino film plastics abrasive material and air to be mixed to form high speed beam in boron carbide nozzle
After stream, the processing of abrasive air jet stream is carried out to aircraft coating surface by control injection pressure, spray distance and spray angle, to winged
Organic coating surface carries out impact and removes removing coating.
The aircraft coating is the aircraft skin coating that basis material is 2024-T3 aluminium alloy plate.
Basis mechanism of the invention is:
Soft amino film plastics particle mixes production with high-speed gas into high velocity jet in utilization, applies through jet impact directive aircraft
Layer surface carries out the processing of abrasive air jet stream to aircraft coating under conditions of reducing and even aircraft matrix surface being avoided to generate damage
Removal.It solves existing aircraft coating removal technique and easily causes personnel's health and environmental hazard, coating removal is at high cost,
Low efficiency, problem not easy to control and easily leading to matrix surface generation damage are, it can be achieved that aircraft coating is efficient, lossless, green
Processing removal.
Beneficial effects of the present invention:
1, the amino film plastics abrasive material of the method for the present invention preparation can be realized under conditions of aircraft matrix surface does not generate damage and fly
Efficient, green, the lossless removal of organic coating, simple process, economical and efficient, controllability are strong.
2, the amino film plastics abrasive material of the method for the present invention preparation does not generate toxicity in aircraft coating removal process, and
It abrasion resistance and has excellent antistatic properties.
3, the method for the present invention prepares the removal that amino film plastics abrasive material is applicable not only to aircraft skin coating, it can also be used to fly
The removal of machine other structures part surface covering.
4, the method for the present invention prepares the removal that amino film plastics abrasive material is applicable not only to aircraft coating, is also applied for automobile painting
The removal of layer and rubber and plastic products flash.
5, the present invention has been selected by many experiments by 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50,50 ~ 60 four kinds of mesh partial sizes
Raw material is mixed in proportion, and aircraft coating removal effect and matrix surface quality are best.By comparative test, other grains are selected
Under aircraft coating removal effect (including coating removal efficiency, matrix surface microscopic appearance, roughness etc.) is obvious when diameter and proportion
Drop.
6. the amino film plastics abrasive material also recoverable after using.
Detailed description of the invention
Fig. 1 is 30 ~ 40 mesh amino film plastics abrasive material microscopic appearance figures of present example 1 after crushing.
Fig. 2 is aircraft coating morphology figure of the present example 1 after the processing of amino film plastics abrasive air jet stream.
Fig. 3 is aircraft substrate surface topographical figure of the present example 2 after the processing of amino film plastics abrasive air jet stream.
Fig. 4 is aircraft substrate surface topographical figure of the present example 3 after the processing of amino film plastics abrasive air jet stream.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
Embodiment one.
A kind of preparation method of aircraft coating removal amino film plastics abrasive material, used equipment component have blade type modeling
Expect crusher, turbine type crushing machine, vibrating screen, ball mill, sand-blasting machine, these equipment are the conventional products that market is sold.Fly
Organic coating is aircraft skin surface covering, and basis material is 2024-T3 aluminium alloy plate.Amino film plastics abrasive material, primary chemical
Ingredient is C and O.
Specific step is as follows:
1, amino film plastics are broken
The amino film plastics that Mohs' hardness is 3.5 ~ 4.5 are put into blade type plastic breaker and are crushed, crusher
Ledger-plate and cutting blade are matched number than being 2:3, and adjustment gap is 1 ~ 5mm between blade, and blade stiffness is HRC52 ~ 58, crusher
Hole diameter of sieve (perforated) plate is 8.0 ~ 12.0mm.
2, amino film plastics particle is crushed and is sieved
It will be put into through broken amino film plastics particle to crushing in turbine type crushing machine, rotor mill diameter is
130.0 ~ 750.0mm, secondary speed are 2250 ~ 7500r/min.Pulverized particles are put into being sieved in vibrating screen step by step afterwards
Choosing to granularity level is<10 mesh, 10 ~ 16 mesh, 16 ~ 20 mesh, 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh, 50 ~ 60 mesh with>
60 mesh
3, the preparation of abrasive material
Will screening gained partial size rank be 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh and 50 ~ 60 mesh) particle press certain mass percent
Mixed that (it be 30 ~ 40%, 40 ~ 50 mesh particles is 30 ~ 40%, 50 ~ 60 mesh that 20 ~ 30 mesh particles, which are 10 ~ 20%, 30 ~ 40 mesh particles,
It is≤30%) obtain polish abrasive.
4, coating removal is processed
Gained amino film plastics abrasive material is mixed in boron carbide nozzle with air, control injection pressure, spray distance and
Spray angle carries out the impact of high speed line to coating surface, removes removing coating.
Embodiment two.
The difference between this embodiment and the first embodiment lies in fixed blade of crusher piece and cutting blade are matched number than being 4:6, make
It is the same as example 1.
Example 1.
Step 1, amino film plastics are broken
The amino film plastics that Mohs' hardness is 4.0 are put into blade type plastic breaker and are crushed, fixed blade of crusher
Piece 4, cutting blade 6, controlling adjustment gap between blade is 4mm, blade stiffness HRC56, mesh size 8.0mm.
Step 2, abrasive material crush and screening
The amino film plastics particle obtained by broken crusher machine is put into turbine type crushing machine and is crushed, rotor mill is straight
Diameter is 500mm, secondary speed 3250r/min, after pulverized particles be put into vibrating screen carry out sizing screening, after screening
Grain graininess rank is respectively<10 mesh, 10 ~ 16 mesh, 16 ~ 20 mesh, 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh, 50 ~ 60 mesh and>60
Mesh.
The preparation of step 3, abrasive material
It is 20 ~ 30 mesh by screening gained partial size rank, the particle of 30 ~ 40 mesh, 40 ~ 50 mesh and 50 ~ 60 mesh presses certain mass percentage
Than being mixed, polish abrasive is obtained.Specific ratio are as follows: the mass percent of 20 ~ 30 mesh particles is 10%, 30 ~ 40 mesh particles
Mass percent is 40%, and the mass percent of 40 ~ 50 mesh particles is 40%, and the mass percent of 50 ~ 60 mesh particles is 10%.
Step 4, coating removal processing
Amino film plastics abrasive material is put into sand-blasting machine, aircraft coating sample is lain against between two parties above sandblasting machine worktable,
It is 0.15MPa, spray angle 90o, spray distance 15mm in injection pressure using the boron carbide nozzle of internal orifice dimension 8.0mm
Under conditions of to aircraft coating surface carry out injection 37 seconds.
Sample is taken out to be detected.It is microcosmic to the abrasive grain of 30 ~ 40 mesh through S-4800 type scanning electron microscope (SEM)
Morphology analysis detection obtains amino film plastics abrasive grain in polyhedron angular and subangular structure (Fig. 1).Through ISM-
PM200SB type electron microscope analyzes coating finished surface, show that aluminium alloy 2024-T3 substrate surface coating is gone
It removes, does not find obvious coating residual phenomena (Fig. 2), and the matrix surface after processing does not find abrasive material insertion and surface scratch phenomenon
(Fig. 3).
Example 2.
Step 1, amino film plastics are broken
The amino film plastics that Mohs' hardness is 3.5 are put into blade type plastic breaker and are crushed, fixed blade of crusher
Piece 4, cutting blade 6, controlling adjustment gap between blade is 5mm, blade stiffness HRC58, mesh size 10.0mm.
Step 2, abrasive material crush and screening
The amino film plastics particle obtained by broken crusher machine is put into turbine type crushing machine and is crushed, rotor mill is straight
Diameter is 750mm, secondary speed 2250r/min, after pulverized particles be put into vibrating screen carry out sizing screening, after screening
Grain graininess rank is respectively<10 mesh, 10 ~ 16 mesh, 16 ~ 20 mesh, 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh, 50 ~ 60 mesh and>60
Mesh.
The preparation of step 3, abrasive material
It is 20 ~ 30 mesh by screening gained partial size rank, the particle of 30 ~ 40 mesh, 40 ~ 50 mesh and 50 ~ 60 mesh presses certain mass percentage
Than being mixed, polish abrasive is obtained.Specific ratio are as follows: the mass percent of 20 ~ 30 mesh particles is 15%, 30 ~ 40 mesh particles
Mass percent is 35%, and the mass percent of 40 ~ 50 mesh particles is 35%, and the mass percent of 50 ~ 60 mesh particles is 15%.
Step 4, coating removal processing
Amino film plastics abrasive material is put into sand-blasting machine, aircraft coating sample is lain against between two parties above sandblasting machine worktable,
It is 0.2MPa, spray angle 80o, spray distance 15mm in injection pressure using the boron carbide nozzle of internal orifice dimension 8.0mm
Under conditions of to 1 aircraft coating surface of example spray 12 seconds.
Sample is taken out to be detected.Coating finished surface is analyzed through ISM-PM200SB type electron microscope, is obtained
Aluminium alloy 2024-T3 substrate surface coating has removed, and does not find obvious coating residual phenomena, and shape appearance figure is similar with Fig. 2, and adds
Matrix surface after work does not find that abrasive material insertion and surface scratch phenomenon, shape appearance figure are similar with Fig. 3.
Example 3.
Step 1, amino film plastics are broken
The amino film plastics that Mohs' hardness is 4.0 are put into blade type plastic breaker and are crushed, fixed blade of crusher
Piece 2, cutting blade 3, controlling adjustment gap between blade is 3mm, blade stiffness HRC52, mesh size 12.0mm.
Step 2, abrasive material crush and screening
The amino film plastics particle obtained by broken crusher machine is put into turbine type crushing machine and is crushed, rotor mill is straight
Diameter is 350mm, secondary speed 4500r/min, after pulverized particles be put into vibrating screen carry out sizing screening, after screening
Grain graininess rank is respectively<10 mesh, 10 ~ 16 mesh, 16 ~ 20 mesh, 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh, 50 ~ 60 mesh and>60
Mesh.
The preparation of step 3, abrasive material
It is 20 ~ 30 mesh by screening gained partial size rank, the particle of 30 ~ 40 mesh, 40 ~ 50 mesh and 50 ~ 60 mesh presses certain mass percentage
Than being mixed, polish abrasive is obtained.Specific ratio are as follows: the mass percent of 20 ~ 30 mesh particles is 20%, 30 ~ 40 mesh particles
Mass percent be 30%, the mass percents of 40 ~ 50 mesh particles is 30%, and the mass percent of 50 ~ 60 mesh particles is 20%.
Step 4, coating removal processing
Amino film plastics abrasive material is put into sand-blasting machine, aircraft coating sample is lain against between two parties above sandblasting machine worktable,
It is 0.15MPa, spray angle 80o, spray distance 15mm in injection pressure using the boron carbide nozzle of internal orifice dimension 8.0mm
Under conditions of to another aircraft coating (different from example 1 and 2 coating coating processes of example) carry out injection 40 seconds.
Sample is taken out to be detected.Coating finished surface is analyzed through ISM-PM200SB type electron microscope, is obtained
Aluminium alloy 2024-T3 substrate surface coating has removed (Fig. 4), and the matrix surface after processing does not find abrasive material insertion and surface
Scratch phenomenon, shape appearance figure are similar with Fig. 3.
Example 4.
Step 1, amino film plastics are broken
The amino film plastics that Mohs' hardness is 4.5 are put into blade type plastic breaker and are crushed, fixed blade of crusher
Piece 2, cutting blade 3, controlling adjustment gap between blade is 1mm, blade stiffness HRC58, mesh size 11.0mm.
Step 2, abrasive material crush and screening
The amino film plastics particle obtained by broken crusher machine is put into turbine type crushing machine and is crushed, rotor mill is straight
Diameter is 130mm, secondary speed 7500r/min, after pulverized particles be put into vibrating screen carry out sizing screening, after screening
Grain graininess rank is respectively<10 mesh, 10 ~ 16 mesh, 16 ~ 20 mesh, 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh, 50 ~ 60 mesh and>60
Mesh.
The preparation of step 3, abrasive material
It is 20 ~ 30 mesh by screening gained partial size rank, the particle of 30 ~ 40 mesh, 40 ~ 50 mesh and 50 ~ 60 mesh presses certain mass percentage
Than being mixed, polish abrasive is obtained.Specific ratio are as follows: the mass percent of 20 ~ 30 mesh particles is 10%, 30 ~ 40 mesh particles
Mass percent be 30%, the mass percents of 40 ~ 50 mesh particles is 30%, and the mass percent of 50 ~ 60 mesh particles is 30%.
Step 4, coating removal processing
Amino film plastics abrasive material is put into sand-blasting machine, aircraft coating sample is lain against between two parties above sandblasting machine worktable,
It is 0.15MPa, spray angle 80o, spray distance 15mm in injection pressure using the boron carbide nozzle of internal orifice dimension 8.0mm
Under conditions of to another aircraft coating (different from example 1 and 2 coating coating processes of example) carry out injection 40 seconds.
Sample is taken out to be detected.Coating finished surface is analyzed through ISM-PM200SB type electron microscope, is obtained
Aluminium alloy 2024-T3 substrate surface coating has removed, and the matrix surface after processing does not find abrasive material insertion and surface scratch
Phenomenon, shape appearance figure are similar with Fig. 3.
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.
Claims (6)
1. a kind of preparation method of aircraft coating removal amino film plastics abrasive material, it is characterized in that it the following steps are included:
It is crushed firstly, amino film plastics are put into crusher, obtains amino film plastics particle；
It is crushed secondly, broken obtained amino film plastics particle is put into pulverizer；
Smashed amino film plastics particle is put into vibrating screen and carries out sizing screening, respectively obtains granularity level by third
The amino of respectively<10 mesh, 10 ~ 16 mesh, 16 ~ 20 mesh, 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh, 50 ~ 60 mesh and>60 mesh molds
Expect particle；
4th, by screening 4 kinds of different grain size ranks of gained: the amino of 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh and 50 ~ 60 mesh molds
Expect particle by mass percentage are as follows: 20 ~ 30 mesh particle, 10 ~ 20%, 30 ~ 40 mesh particle be 30 ~ 40%, 40 ~ 50 mesh particles be 30 ~
40%, 50 ~ 60 mesh are mixed for≤30%, and the particle of mixed different grain size rank is put into ball mill by a certain percentage and is stirred
8 ~ 15 minutes, make the full and uniform mixing of particle, obtains aircraft coating removal amino film plastics abrasive material.
2. according to the method described in claim 1, crusher is fixed it is characterized in that the crusher is blade type plastic breaker
It is 2 and 3 or 4 and 6 that blade and cutting blade, which are matched number, and adjustment gap is 1 ~ 5mm between blade, and blade stiffness is HRC52 ~ 58, is broken
Broken machine hole diameter of sieve (perforated) plate is 8.0 ~ 12.0mm.
3. according to the method described in claim 1, rotor mill is straight it is characterized in that the pulverizer is turbine type crushing machine
Diameter is 130.0 ~ 750.0mm, and secondary speed is 2250 ~ 7500r/min.
4. according to the method described in claim 1, it is characterized in that the aircraft coating removal amino film plastics abrasive material is more
Face body angular and subangular structure, its Mohs' hardness are 3.5 ~ 4.5, and bulk density is 0.65 ~ 0.85g/cm3。
5. a kind of aircraft coating removal method, it includes abrasive material preparation and the processing of abrasive air jet stream, it is characterized in that:
The abrasive material prepares following steps:
It is crushed firstly, amino film plastics are put into crusher, obtains amino film plastics particle；
It is crushed secondly, broken obtained amino film plastics particle is put into pulverizer；
Smashed amino film plastics particle is put into vibrating screen and carries out sizing screening, respectively obtains granularity level by third
The amino of respectively<10 mesh, 10 ~ 16 mesh, 16 ~ 20 mesh, 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh, 50 ~ 60 mesh and>60 mesh molds
Expect particle；
4th, by screening 4 kinds of different grain size ranks of gained: the amino of 20 ~ 30 mesh, 30 ~ 40 mesh, 40 ~ 50 mesh and 50 ~ 60 mesh molds
Expect particle by mass percentage are as follows: 20 ~ 30 mesh particle, 10 ~ 20%, 30 ~ 40 mesh particle be 30 ~ 40%, 40 ~ 50 mesh particles be 30 ~
40%, 50 ~ 60 mesh are mixed for≤30%, and the particle of mixed different grain size rank is put into ball mill by a certain percentage and is stirred
8 ~ 15 minutes, make the full and uniform mixing of particle, obtains aircraft coating removal amino film plastics abrasive material；
The abrasive air jet stream processing refers to:
It carries out gained aircraft coating removal amino film plastics abrasive material and air to be mixed to form high speed beam in boron carbide nozzle
After stream, the processing of abrasive air jet stream is carried out to aircraft coating surface by control injection pressure, spray distance and spray angle, to winged
Organic coating surface carries out impact and removes removing coating.
6. according to the method described in claim 5, it is characterized in that it is 2024-T3 aluminium alloy that the aircraft coating, which is basis material,
The aircraft skin coating of plate.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110625533A (en) * | 2019-09-12 | 2019-12-31 | 安徽理工大学 | Method for removing surface coating of interior trim part of airplane |
| CN111688065A (en) * | 2020-06-22 | 2020-09-22 | 南京航空航天大学 | Method for preparing abrasive for surface jet flow treatment by using waste melamine plastic and application |
| CN112359315A (en) * | 2020-11-10 | 2021-02-12 | 安徽理工大学 | Green low-temperature nitriding agent for titanium alloy surface and method |
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| CN202061671U (en) * | 2011-01-13 | 2011-12-07 | 常州乔尔塑料有限公司 | Shearing type prebreaker suitable for preparing amino moulding plastics |
| JP2018002797A (en) * | 2016-06-29 | 2018-01-11 | 日立化成株式会社 | Metal polishing liquid and polishing method |
| CN106475914A (en) * | 2016-10-31 | 2017-03-08 | 南京航空航天大学 | A kind of titanium alloy surface amino film plastics abrasive air Jet Polishing method |
| CN106566472A (en) * | 2016-10-31 | 2017-04-19 | 常州乔尔塑料有限公司 | Preparation method and purpose of amino molding compound abrasive for abrasive air jet finishing |
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| CN110625533A (en) * | 2019-09-12 | 2019-12-31 | 安徽理工大学 | Method for removing surface coating of interior trim part of airplane |
| CN111688065A (en) * | 2020-06-22 | 2020-09-22 | 南京航空航天大学 | Method for preparing abrasive for surface jet flow treatment by using waste melamine plastic and application |
| CN111688065B (en) * | 2020-06-22 | 2021-07-23 | 南京航空航天大学 | Method for preparing abrasive for surface jet flow treatment by using waste melamine plastic and application |
| CN112359315A (en) * | 2020-11-10 | 2021-02-12 | 安徽理工大学 | Green low-temperature nitriding agent for titanium alloy surface and method |
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