CN115739553A - Aircraft coating method based on paint mist particle settlement control - Google Patents
Aircraft coating method based on paint mist particle settlement control Download PDFInfo
- Publication number
- CN115739553A CN115739553A CN202211469729.4A CN202211469729A CN115739553A CN 115739553 A CN115739553 A CN 115739553A CN 202211469729 A CN202211469729 A CN 202211469729A CN 115739553 A CN115739553 A CN 115739553A
- Authority
- CN
- China
- Prior art keywords
- paint
- spray gun
- spray
- spraying
- paint mist
- 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.)
- Granted
Links
- 239000003973 paint Substances 0.000 title claims abstract description 121
- 239000003595 mist Substances 0.000 title claims abstract description 77
- 239000002245 particle Substances 0.000 title claims abstract description 67
- 238000000576 coating method Methods 0.000 title claims abstract description 50
- 239000007921 spray Substances 0.000 claims abstract description 91
- 238000005507 spraying Methods 0.000 claims abstract description 77
- 239000011248 coating agent Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000005484 gravity Effects 0.000 claims abstract description 10
- 230000009471 action Effects 0.000 claims abstract description 8
- 239000007888 film coating Substances 0.000 claims description 20
- 238000009501 film coating Methods 0.000 claims description 20
- 238000004062 sedimentation Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 abstract description 10
- 239000006185 dispersion Substances 0.000 abstract description 7
- 230000001788 irregular Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
Images
Abstract
The invention discloses an aircraft coating method based on paint mist particle settlement control, which comprises the following steps: 1) Placing the airplane in a paint spraying chamber; 2) The airflow flows to the interior of the paint spraying chamber, and the direction of the airflow in the paint spraying chamber is consistent with the heading of the airplane; 3) A spray gun is used at the inner side of the paint spraying chamber and is opposite to the upper surface, the lower surface and the side surface of the airplane for spraying to generate paint mist particles; 4) The spray gun reciprocates back and forth at the top of the spray booth along the axis direction of the airplane; 5) According to the moving direction of the spray gun, the spraying speed of the spray gun and the air flow speed in the spray booth are adjusted, so that the paint mist particles sprayed by the spray gun form a flat and uniform coating on the surface of the airplane under the action of gravity and air flow in the spray booth. The invention not only can effectively reduce the coating roughness and the light-losing faults caused by the irregular dispersion of paint mist in the spraying process of the airplane, but also can ensure that the coating is more uniform and flat on the basis of the conventional spraying process, and further improves the film thickness and the uniformity control precision of the airplane coating.
Description
Technical Field
The invention relates to the technical field of aircraft surface coating processes, in particular to an aircraft coating method based on paint mist particle settlement control.
Background
At present, the known method for reducing the influence of spray paint mist on the uniformity of the coating thickness is mainly to take scattered paint mist particles away from a spraying area through air flow inside a paint spraying chamber and attach the scattered paint mist particles to the outside of the spraying area, so that the coating thickness and the appearance quality are controlled, and the coating uniformity is improved. However, in the construction process of oversized workpieces such as airplanes and the like, the conventional coating methods are difficult to completely exhaust paint mist in a paint spray booth and place the paint mist in a non-spraying area, so that residual paint mist is deposited in the spraying area to pollute a sprayed area and an area to be sprayed, the control of the coating thickness and the appearance quality of the outer surface of the airplane is difficult, and the coating thickness is extremely poor and the light loss fault is very easy to occur.
Disclosure of Invention
The invention aims to provide an aircraft coating method based on paint mist particle settlement control, which can effectively reduce coating light loss faults caused by irregular paint mist drift and is beneficial to improving the coating thickness uniformity.
The invention is realized by the following technical scheme: an aircraft coating method based on paint mist particle settlement control comprises the following steps:
(1) Placing the airplane in a paint spraying chamber, wherein the interior of the paint spraying chamber is closed, and the front end and the rear end of the paint spraying chamber are ventilated;
(2) The airflow flows to the interior of the paint spraying chamber, and the direction of the airflow in the paint spraying chamber is consistent with the aircraft course;
(3) A spray gun is used at the inner side of the paint spraying chamber and is opposite to the upper surface, the lower surface and the side surface of the airplane for spraying to generate paint mist particles;
(4) The spray gun reciprocates back and forth along the axis direction of the airplane at the top of the spray chamber, and the air flow velocity in the spray chamber is in direct proportion to the spraying velocity of the spray gun;
(5) According to the moving direction of the spray gun, the spraying speed of the spray gun and the air flow speed in the spray booth are adjusted, so that the paint mist particles sprayed by the spray gun form a flat and uniform coating on the surface of the airplane under the action of gravity and air flow in the spray booth.
The working principle of the technical scheme is that the airflow direction of the spray booth is consistent with the aircraft course, so that the wind resistance and the turbulence of the airflow inside the spray booth can be reduced, the air supply and exhaust efficiency is improved, and the directional dispersion of paint mist particles can be realized. By utilizing the characteristic that paint mist particles move downwards under the influence of gravity factors, the paint mist particles can be accurately and quantitatively settled to a spraying area and fused with a wet film coating by operating along the airflow direction of a spray booth and controlling the spraying speed and the airflow speed of the spray booth to change the scattering direction and the settling distance of the paint mist particles, so that the accurate control of the uniformity of the thickness of the coating is realized.
In order to better implement the method of the invention, further, in the step (1), the aircraft placed in the paint spraying chamber has a head facing the front end of the paint spraying chamber and a tail facing the rear end of the paint spraying chamber.
In order to better implement the method of the present invention, further, in the step (2), the front end of the paint spraying chamber is an air supply outlet, the rear end of the paint spraying chamber is an air exhaust outlet, and the air flow direction is from the nose to the tail of the aircraft.
In order to better realize the method of the invention, further, in the step (5), when the spray gun sprays in the direction from the head to the tail, the gas flow velocity in the spray booth is 300m/s-500m/s, and the spraying velocity of the spray gun is 600mm/s-1000mm/s.
When the spraying is carried out from the nose to the tail along the course of the airplane, air is supplied from the front part of the nose, air is exhausted from the rear part of the tail, and the air flow direction is from the nose to the tail. The atomized paint mist particles of the spray gun can directionally drift towards the tail direction of the airplane under the action of the airflow, and then fall to a subsequent area to be sprayed under the influence of gravity factors, so that the pollution to the sprayed area caused by the irregular drift of the paint mist is avoided. Along with the continuous volatilization of the solvent in the coating, the surface tension of the scattered paint mist particles is gradually increased, and when the surface tension of the paint mist particles is changed to be large enough after the paint mist particles are settled to a subsequent area to be sprayed, a wet film formed by spraying is difficult to wet the settled paint mist particles, so that the surface to be sprayed is easy to be rough. In order to overcome the problem, the dispersion distance of paint mist particles and the volatilization time in air can be shortened by reducing the air flow speed of a paint spraying chamber and improving the spraying speed, the time for covering the paint mist particles by a wet film is controlled within a certain range, the paint mist particles can be fused with a wet film coating sprayed in the subsequent process before the paint mist particles are completely dried, and the smoothness and the uniformity of the thickness of the coating are realized by the flowing characteristic of liquid.
In order to better realize the method of the invention, further, in the step (5), when the spray gun sprays in the direction from the tail to the head, the gas flow speed in the spray chamber is 300m/s-500m/s, and the spraying speed of the spray gun is 345mm/s-590mm/s.
When the spraying is carried out from the tail to the head along the course of the airplane, air is supplied from the front part of the head, air is exhausted from the rear part of the tail, and the air flow direction is from the head to the tail. The atomized paint mist particles of the spray gun can directionally drift towards the tail direction of the airplane under the action of the airflow and then settle to the pre-arranged spraying area under the influence of gravity factors, so that the pollution to the spraying area caused by the irregular drift of the paint mist is avoided. Similarly, with the continuous volatilization of the solvent in the coating, the surface tension of the wet film coating is gradually increased, and the surface tension of the dispersed paint mist particles is also increased, but the increase speed of the surface tension of the paint mist particles is far faster than that of the wet film coating. When the surface tension of the wet film coating changes to be large enough, paint mist particles deposited on the film layer are difficult to wet and finally adhere to the surface of the coating to form convex particles, which easily causes the failure of coating surface light loss. In order to overcome the problem, the drifting distance of paint mist particles and the volatilization time in the air can be shortened by reducing the air flow speed of a paint spraying chamber and the spraying speed, the time for the paint mist particles to fall on a wet film is controlled within a certain range, the previous wet film coating can be fused with the settled paint mist particles before the wet film coating is completely dried, and the smoothness and the uniformity of the coating thickness are realized by virtue of the flowing characteristic of liquid.
To better implement the method of the present invention, further, the aircraft surface is uniformly coated with a wet film coating.
To better practice the method of the invention, further, the time for the paint mist particles sprayed from the spray gun to fuse with the wet film coating on the aircraft surface does not exceed 0.5s.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) According to the invention, the airflow direction of the paint spray booth is consistent with the aircraft course, so that the wind resistance and the turbulent flow of the airflow inside the paint spray booth can be reduced, the air supply and exhaust efficiency is improved, and the directional dispersion of paint mist particles can be realized;
(2) The invention utilizes the characteristic that paint mist particles move downwards under the influence of gravity factors, changes the dispersion direction and the sedimentation distance of the paint mist particles by operating along the airflow direction of a paint spraying chamber and controlling the spraying speed and the airflow speed of the paint spraying chamber, so that the paint mist particles can be accurately and quantitatively settled to a spraying area and are fused with a wet film coating, thereby realizing the accurate control of the uniformity of the thickness of the coating;
(3) The aircraft coating method provided by the invention can effectively reduce coating roughness and light loss faults caused by irregular paint mist dispersion in the aircraft spraying process in the construction process of oversized workpieces such as an aircraft, can enable the coating to be more uniform and flat on the basis of a conventional spraying process, further improves the film thickness and uniformity control precision of the aircraft coating, and can also avoid residual paint mist from settling in a spraying area to pollute a sprayed area and an area to be sprayed.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of the working principle of the present invention;
FIG. 2 is a schematic view of the spray gun of the present invention spraying from the head to the tail;
FIG. 3 is a schematic view of the spray gun of the present invention spraying from the tail to the head.
Wherein: 1-air supply outlet, 2-air outlet, 3-air flow direction, 4-aircraft course, 5-directional dispersion area, 6-paint spray booth, 7-spray gun, 8-body surface, 9-sprayed area, 10-area to be sprayed, 11-dispersed paint mist particles, 12-settled paint mist particles, and 13-wet film coating.
Detailed Description
The present invention will be described in further detail with reference to the following examples for the purpose of making clear the objects, process conditions and advantages of the present invention, but the embodiments of the present invention are not limited thereto, and various substitutions and modifications can be made according to the common technical knowledge and the conventional means in the art without departing from the technical idea of the present invention described above, and the specific examples described herein are only for explaining the present invention and are not intended to limit the present invention.
Example 1:
the embodiment provides an aircraft coating method based on paint mist particle settlement control, which comprises the following steps:
(1) Placing an airplane in a paint spraying chamber, wherein the interior of the paint spraying chamber is closed, and the front end and the rear end of the paint spraying chamber are arranged in a ventilating manner;
(2) The airflow flows to the interior of the paint spraying chamber, and the direction of the airflow in the paint spraying chamber is consistent with the aircraft course;
(3) A spray gun is used at the inner side of a spray booth, and the spray gun is directly opposite to the upper surface, the lower surface and the side surface of the airplane for spraying to generate paint mist particles;
(4) The spray gun reciprocates back and forth along the axis direction of the airplane at the top of the spray chamber, and the air flow velocity in the spray chamber is in direct proportion to the spraying velocity of the spray gun;
(5) According to the moving direction of the spray gun, the spraying speed of the spray gun and the air flow speed in the spray booth are adjusted, so that the paint mist particles sprayed by the spray gun form a flat and uniform coating on the surface of the airplane under the action of gravity and air flow in the spray booth.
In the figure 1, when the surface of the airplane is sprayed, air is supplied 1 from the front part of the nose, air is exhausted 2 from the rear part of the tail, and the airflow direction 3 is from the nose to the tail, so that the airflow direction 3 of the paint spraying chamber 6 is consistent with the heading 4 of the airplane. The paint mist particles can be directionally drifted 5 to be settled to a spraying area and be fused with a wet film coating by operating along the air flow direction 3 of the spray booth and controlling the spraying speed and the air flow speed of the spray booth to shorten the drifting distance of the paint mist particles and the volatilization time in the air, so that the accurate control of the uniformity of the thickness of the coating is realized.
Example 2:
this embodiment is directed to the process of spraying from the head to the tail of the spray gun, as shown in fig. 2, when spraying from the head to the tail, the spray gun 7 moves from front to back, and the air flow direction 3 is from the head to the tail. The spray gun 7 atomizes the coating to form paint mist particles, part of the coating paint mist particles are attached to the surface 8 of the object to be sprayed to form a continuous paint film coating in a sprayed area 9, and part of the coating paint mist particles are carried away by air flow in the air and directionally float and settle towards a subsequent area 10 to be sprayed. In order to achieve fusion of the airborne and settled paint mist particles with the wet film coating, the airflow velocity in the spray booth 6 should be in direct proportion to the spray velocity. When the airflow speed of the paint spraying chamber 6 is set within the range of 300-500 m/S, the spraying speed is preferably within the range of 600-1000 mm/S, so that the scattered paint mist particles 11 can be uniformly settled to the area 10 to be sprayed, the wet film coating 13 and the settled paint mist particles 12 can be covered and fused within 0.5S, and finally, the wet film coating and the settled paint mist particles 12 can be leveled under the action of gravity to form a flat and uniform coating. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.
Example 3:
the present embodiment is directed to the spraying process from the tail to the head, and as shown in fig. 3, when spraying from the tail to the head, the spray gun 7 moves from the back to the front, and the air flow direction 3 is from the head to the tail. The spray gun 7 atomizes the coating to form paint mist particles, part of the coating paint mist particles are attached to the surface 8 of the sprayed object to form a continuous paint film coating in the sprayed area 9, and part of the coating paint mist particles are carried away by air flow in the air and float and settle in the direction of the sprayed area 9. In order to allow the airborne and settled paint mist particles to fuse with the wet film coating 13, the booth airflow rate should be in direct proportion to the spray rate and the spray rate should be reduced. When the airflow speed of the spray booth 6 is set within the range of 300-500 m/S, the spraying speed is preferably in the range of 354-590 mm/S, so that the paint mist particles 11 can uniformly settle to the sprayed area 9, and the dispersed paint mist particles 11 can be completely merged into the wet film 13 within 0.5S, and finally, the paint mist can be leveled under the action of gravity to form a flat and uniform coating. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. An aircraft coating method based on paint mist particle settlement control is characterized by comprising the following steps:
(1) Placing an airplane in a paint spraying chamber, wherein the interior of the paint spraying chamber is closed, and the front end and the rear end of the paint spraying chamber are arranged in a ventilating manner;
(2) The airflow flows to the interior of the paint spraying chamber, and the direction of the airflow in the paint spraying chamber is consistent with the aircraft course;
(3) A spray gun is used at the inner side of a spray booth, and the spray gun is directly opposite to the upper surface, the lower surface and the side surface of the airplane for spraying to generate paint mist particles;
(4) The spray gun reciprocates back and forth along the axis direction of the airplane at the top of the spray chamber, and the air flow velocity in the spray chamber is in direct proportion to the spraying velocity of the spray gun;
(5) According to the moving direction of the spray gun, the spraying speed of the spray gun and the air flow speed in the spray booth are adjusted, so that the paint mist particles sprayed by the spray gun form a flat and uniform coating on the surface of the airplane under the action of gravity and air flow in the spray booth.
2. The method of claim 1, wherein in step (1), the aircraft disposed in the spray booth has a nose facing the front end of the spray booth and a tail facing the rear end of the spray booth.
3. The aircraft coating method based on paint mist particle sedimentation control as claimed in claim 2, wherein in the step (2), the front end of the paint spray booth is an air supply outlet, the rear end of the paint spray booth is an air exhaust outlet, and the air flow direction is from the head to the tail of the aircraft.
4. The aircraft coating method based on paint mist particle sedimentation control as claimed in claim 3, wherein in the step (5), when the spray gun sprays paint from the head to the tail, the gas flow velocity in the paint spray chamber is 300m/s-500m/s, and the spraying velocity of the spray gun is 600mm/s-1000mm/s.
5. The aircraft coating method based on paint mist particle sedimentation control as claimed in claim 3, wherein in the step (5), when the spray gun sprays paint from the tail to the head, the gas flow velocity in the paint spray chamber is 300m/s-500m/s, and the spraying velocity of the spray gun is 345mm/s-590mm/s.
6. The aircraft coating method based on paint mist particle sedimentation control as claimed in any one of claims 1 to 5, wherein the aircraft surface is uniformly coated with a wet film coating.
7. An aircraft coating method based on paint mist particle settling control as claimed in claim 6 wherein the time for the paint mist particles sprayed from the spray gun to merge with the wet film coating on the aircraft surface is not more than 0.5s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211469729.4A CN115739553B (en) | 2022-11-22 | 2022-11-22 | Aircraft coating method based on paint mist particle sedimentation control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211469729.4A CN115739553B (en) | 2022-11-22 | 2022-11-22 | Aircraft coating method based on paint mist particle sedimentation control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115739553A true CN115739553A (en) | 2023-03-07 |
| CN115739553B CN115739553B (en) | 2023-12-08 |
Family
ID=85335411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211469729.4A Active CN115739553B (en) | 2022-11-22 | 2022-11-22 | Aircraft coating method based on paint mist particle sedimentation control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115739553B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060243202A1 (en) * | 2003-01-06 | 2006-11-02 | Thelen Richard L | Aircraft spray booth |
| US7666077B1 (en) * | 2007-11-13 | 2010-02-23 | Global Finishing Solutions, L.L.C. | Paint booth arrangement and method for directing airflow |
| CN205868673U (en) * | 2016-08-10 | 2017-01-11 | 潍坊远大金属表面科技有限公司 | Spraying chamber |
| CN106861981A (en) * | 2017-02-06 | 2017-06-20 | 中国民航大学 | A kind of rope drives aircraft spray painting motion platform |
| CN207413707U (en) * | 2017-10-26 | 2018-05-29 | 广汽丰田汽车有限公司 | Basecoat paint system |
| US20190100332A1 (en) * | 2017-10-02 | 2019-04-04 | The Boeing Company | Aircraft wing-body section spray containment system |
-
2022
- 2022-11-22 CN CN202211469729.4A patent/CN115739553B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060243202A1 (en) * | 2003-01-06 | 2006-11-02 | Thelen Richard L | Aircraft spray booth |
| US7666077B1 (en) * | 2007-11-13 | 2010-02-23 | Global Finishing Solutions, L.L.C. | Paint booth arrangement and method for directing airflow |
| CN205868673U (en) * | 2016-08-10 | 2017-01-11 | 潍坊远大金属表面科技有限公司 | Spraying chamber |
| CN106861981A (en) * | 2017-02-06 | 2017-06-20 | 中国民航大学 | A kind of rope drives aircraft spray painting motion platform |
| US20190100332A1 (en) * | 2017-10-02 | 2019-04-04 | The Boeing Company | Aircraft wing-body section spray containment system |
| CN207413707U (en) * | 2017-10-26 | 2018-05-29 | 广汽丰田汽车有限公司 | Basecoat paint system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115739553B (en) | 2023-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7611069B2 (en) | Apparatus and method for a rotary atomizer with improved pattern control | |
| US6582766B2 (en) | Two-tone coating method | |
| US9399233B2 (en) | Bell cup for a rotary atomizing type electrostatic coating device | |
| CN101678374A (en) | Spray device having parabolic flow surface | |
| JP2006326460A (en) | Method and apparatus for applying coating | |
| US20160168685A1 (en) | Process for manufacturing a microstructured coating, and wall having such a coating | |
| CN108677183A (en) | A kind of technique that nanometer powder prepares composite coating | |
| CN114100991B (en) | Spraying method for large-scale multi-frame-groove workpiece | |
| CN115739553A (en) | Aircraft coating method based on paint mist particle settlement control | |
| US20120231174A1 (en) | Device and method for applying paints | |
| CN104415866A (en) | Coating spraying control system | |
| Moore | Automotive paint application | |
| JP4779720B2 (en) | Method for coating structure having recess | |
| CN206215429U (en) | Rotary three-dimensional flush coater | |
| CN208131314U (en) | A kind of automatic air spray gun | |
| CN203417821U (en) | Single-station coating machine for internal coating of tire | |
| CN206444796U (en) | A kind of Workpiece coating production line | |
| CN104096651A (en) | New epoxy-coal asphalt paint spray control system | |
| CN109465131A (en) | A kind of body structure functional coating automation paint unit and method | |
| JPS5822262B2 (en) | Electrostatic painting method | |
| CN107051796A (en) | Workpiece coating production line | |
| CN213762430U (en) | Spray gun for automobile painting | |
| CN206922179U (en) | The anti-adhesion device of carbon brush mold | |
| CN210614078U (en) | Air forming cover, rotary cup and atomization spraying device | |
| JP6558260B2 (en) | Painting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |