CN103551290B - Method for spraying silicone rubber paint layer on engine shell - Google Patents
Method for spraying silicone rubber paint layer on engine shell Download PDFInfo
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- CN103551290B CN103551290B CN201310507260.3A CN201310507260A CN103551290B CN 103551290 B CN103551290 B CN 103551290B CN 201310507260 A CN201310507260 A CN 201310507260A CN 103551290 B CN103551290 B CN 103551290B
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Abstract
The invention discloses a method for spraying silicone rubber paint layer on an engine shell. The method comprises the steps of: researching robot spraying parameters in combination with parameters of paint; establishing a relevant technical theoretical model when a robot finishes spraying a coating layer on the outer surface of a solid rocket engine, putting forward a calculation method of key technical parameters, and providing a method for calculation of forming technological parameters of different types and different coatings. The method can be used for shaping work of various types of engine paint layer robots with the diameter greater than 200 mm; if the technical theoretical model is adopted by a novel paint material in the solid rocket engine surface spraying technology research work, optimal spraying speeds Vs and Vm are determined only through combined adjustment of spraying parameters of the robot and the paint material, so that robot spraying technological parameters in the whole spraying process can be determined. The method for spraying silicone rubber paint layer on an engine shell provides a research technical theoretical model and a research method for a surface thickness required coating shaping technology of the robot solid rocket engine, speeds up the research progress, improves research efficiency and reduces research expense.
Description
Technical field
The present invention relates to spraying technology field, specifically a kind of silicon rubber system enamelled coating is in the method for Engine Surface sprayed silicon rubber enamelled coating.
Background technology
Guided missile is in flight during the flight of endoatmosphere, and working environment is very severe, and engine will bear high heat flux, high aerothermal washing away.In severe like this thermal environment, engine composite material casing must carry out external thermal protection; Guided missile, in the process of endoatmosphere high-speed flight, produce static, and engine propellant is to static susceptible, must take anti-static precautions with windage meeting.For guaranteeing missile flight success, a kind of silicon rubber enamelled coating with solar heat protection, antistatic of Xi'an Aerospace Chemical Propulsion Plant's development, and to be disclosed in application number be in 2010100500057 application for a patent for invention file.In engine appearance, evenly spray successively shop primer, insulating moulding coating, antistatic priming paint, antistatic finish paint.Because silicone rubber based sapecial coating is for meeting lightweight, high temperature resistant requirement, a large amount of glass microballoon components, lightweight conductive filler and other auxiliary element in silicone rubber based heat-resistant paint, have been added.Its coating has that solid content is high, viscosity is large, lightweight low-density, feature that coating thickness is high.Technological parameter, operating parameter to spraying are had relatively high expectations, and spray parameters is controlled and not in placely easily to be caused that coating levelability is poor, granular sensation is obvious, and whole apparent mass is poor.If sapecial coating adopts the forming technology of hand spray, coating quality poor stability, product painting quality does not reach the function of the outer protection of engine.
External paint-spray robot is more in the application of military project aviation field, also thermal protective coating thermal protective coating development outside rubber-base flexible from resin-based aspect thermal protective coating outside solid rocket motor case at present, thermal protection struc ture also develops to compound thermal protection struc ture from single coating, outer thermal protective coating forming technology is by traditional hand finishing method to extraordinary automatic forming technical development, but the spraying of this type of sapecial coating has no report.
Domestic application techniques development is very fast, and paint-spray robot is applied to auto industry the earliest, and painting dressing automobiles field has at present many auto production lines and parts paint line and applied Control During Paint Spraying by Robot technology.Along with expanding economy, the progress of technology, the application of robot is promoted and is come gradually, enters household electric appliances, on nearly 30 automatic Spray-Paintings of Er Shiyujia enterprise, obtains sizable application.Aspect the application of war products, this technology application also increases gradually, but the outer thermal protective coating higher to viscosity, the domestic forming technology that generally still adopts hand spray, coating quality poor stability, coating efficiency is low.
Summary of the invention
For overcoming the coating quality poor stability existing in prior art, the deficiency that coating efficiency is low, the present invention proposes a kind of on motor body the method for sprayed silicon rubber enamelled coating.
Detailed process of the present invention is:
Step 1: paint spraying tooling is installed.
Step 2: housing polishing, cleaning.
Step 3: shop primer: at the spraying position of motor body shop primer.Described shop primer adopts silicon rubber shop primer.
I cylinder straight tube face spraying shop primer: during spraying, take housing to rotate vertically the mode of simultaneously carrying out with Control During Paint Spraying by Robot, spraying profile is annulus.After every spraying one circle, Robot engine axial direction moves 150mm, and described displacement is for 1/2nd of spraying fan width, until complete the spraying to cylinder straight tube face.During spraying, spray robot selects parameter in Table 1.
Table 1 shop primer spray parameters
| Viscosity (s/ is coated with 4 glasss) | Spray pressure (MPa) | Spray distance (mm) | Parameter (V) is controlled in spraying | Fan width (mm) | Spray gun bore (mm) |
| 32-42 | 0.6-0.7 | 150 | （2.5，2，2.5） | 250-300 | 1.4 |
Under table 1 spray parameters, for guarantee in spraying not sagging and solidify after often all over coating thickness, reach 0.1mm, the spray area V per second of robot
s0.045m
2/ s, coating quality V per second
m0.004Kg/s.Detailed process is:
A) determine housing rotating speed
V
rotating speed=V
s/ (2 π rF) (1)
Wherein: V
sthe spray area/m per second of robot
2/ s; R is cylinder section radius/m; F is fan width/m; V
rotating speedspraying rotating speed/r/s;
B) determine paint vehicle consumption.By formula (2), determine paint vehicle consumption:
In formula (2): L is spraying axial length/m, V
mcoating quality Kg/s per second; M is paint vehicle quality/Kg.
M
loss: the paint vehicle loss in pipeline.
C) by the paint vehicle calculating, weigh and after 100 eye mesh screens filter, cylinder straight tube face sprayed one time.
II front head and rear head spraying shop primer: the ellipsoidal head spraying method of two ends central opening is housing uniform rotation, robot place's inactive state, spraying profile is annulus, after a circle to be sprayed, Robot engine end socket radial direction moves 150mm, described displacement is 1/2nd of spraying fan width, until complete front head and the spraying of rear head shop primer.Detailed process is:
A) determine motor body rotating speed.Housing velocity of rotation while determining the spraying of the different spraying of end socket radius position according to formula (1), motor body rotating speed is in Table 2.
Table 2GYD painting robot sprays the velocity of rotation of end socket motor body
In table 2, r
1～r
5be respectively the radius of shell cover different parts; T
1～T
5be respectively and r
1～r
5corresponding position place turns around the required time.
B) determine paint vehicle consumption.The pipeline loss M that sprays paint of robot
loss: 1kg, therefore
M=(T
1+ T
2+ T
3+ T
4+ T
5) * V
m* 2+M
loss(3)
The time that when T is Control During Paint Spraying by Robot end socket different parts, housing turns around.
C) by the paint vehicle calculating, weigh and after 100 eye mesh screens filter, front head and rear head sprayed one time.
Step 4: solidify.The motor body that is coated with shop primer is placed in indoor, sprays heat insulating coat after at room temperature solidifying 12h.
Step 5: spraying heat insulating coat.On the cylinder section of motor body and the front head of motor body, rear head, spray heat insulating coat.Described spraying heat insulating coat adopts silicon rubber heat insulating coat.During spraying, spray robot selects parameter in Table 3.
Table 3 heat insulating coat spray parameters
| Viscosity (s/ is coated with 4 glasss) | Spray pressure (MPa) | Spray distance (mm) | Parameter (V) is controlled in spraying | Fan width (mm) | Spray gun bore (mm) |
| 25-30 | 0.6-0.7 | 150 | （2.7，2，2.5） | 250-300 | 1.4 |
Under table 3 spray parameters, for guarantee in spraying not sagging and solidify after often all over coating thickness, reach 0.1mm, the spray area V per second of robot
s0.045m
2/ s, coating quality V per second
m0.003Kg/s.Detailed process is:
I cylinder straight tube face Control During Paint Spraying by Robot heat insulating coat: detailed process is:
A) determine motor body rotating speed.By formula (1), determine that the rotating speed of motor body is 0.0238r/s.
B) determine paint vehicle consumption.The pipeline loss M that sprays paint of robot
loss: 1kg, determines paint vehicle consumption according to formula (4)
C) by definite paint vehicle, weigh and pass through Control During Paint Spraying by Robot ten times after 60 eye mesh screens filter.
II end socket spraying heat insulating coat: detailed process is:
A) determine motor body rotating speed
By formula (1), determine the rotating speed of motor body.Motor body rotating speed is in Table 2.
B) determine paint vehicle consumption.The pipeline loss M that sprays paint of robot
loss: 1kg; To spray end socket be each end sockets of front and back, and heat insulating coat specification requirement thickness is 1mm, spraying pass is 10 times, effectively paint vehicle need be multiplied by 20, therefore
M=(T
1+ T
2+ T
3+ T
4+ T
5) * V
m* 20+M
loss(5)
C) by definite paint vehicle, weigh and adopt Control During Paint Spraying by Robot ten times after 60 eye mesh screens filter.
Step 6: spraying priming paint.Described priming paint adopts silicon rubber priming paint.On the cylinder section of motor body and the front head of motor body, rear head, spray priming paint.Described spraying priming paint adopts silicon rubber priming paint.During spraying, spray robot selects parameter in Table 4.
Table 4 priming paint spray parameters
| Viscosity (s/ is coated with 4 glasss) | Spray pressure (MPa) | Spray distance (mm) | Parameter (V) is controlled in spraying | Fan width (mm) | Spray gun bore (mm) |
| 14-16 | 0.6-0.7 | 150 | （1.3，2，2.5） | 280-300 | 1.4 |
Under table 4 spray parameters, for guarantee in spraying not sagging and solidify after often all over coating thickness, reach 0.1mm, the spray area V per second of robot
s0.045m
2/ s, coating quality V per second
m0.005Kg/s.Detailed process is:
I cylinder straight tube face Control During Paint Spraying by Robot priming paint: detailed process is,
A) determine housing rotating speed.Spraying during priming paint in formula (1) V
s, r, F be identical during with spraying shop primer, therefore the rotating speed of motor body is 0.0238r/s.
B) determine paint vehicle consumption.The pipeline loss M that sprays paint of robot
loss: 1kg, determines paint vehicle consumption according to formula (2);
C) by the paint vehicle calculating, weigh and adopt Control During Paint Spraying by Robot one time after 100 eye mesh screens filter.
II end socket spraying priming paint: detailed process is a) to determine housing rotating speed.When front head sprays priming paint with rear head, end socket spraying position is identical with end socket shop primer spraying position, V in formula (1)
s, r, F and front head be identical with rear head spraying each position of shop primer, therefore motor body rotating speed is in Table 2
B) determine paint vehicle consumption.The pipeline loss M that sprays paint of robot
loss: 1kg, spray end socket and comprise front head and rear head, effectively paint vehicle need be multiplied by 2, therefore
M=(T
1+ T
2+ T
3+ T
4+ T
5) * V
m* 2+M
loss(3)
C) by the paint vehicle calculating, weigh and after 100 eye mesh screens filter, front head and rear head sprayed one time.
Step 7: spray paint.Described finish paint adopts silicon rubber finish paint.Spray paint on the cylinder section of motor body and the front head of motor body, rear head.Described spray paint adopts silicon rubber finish paint.
During spraying, spray robot selects parameter in Table 5.
Table 5 finish paint spray parameters
| Viscosity (s/ is coated with 4 glasss) | Spray pressure (MPa) | Spray distance (mm) | Parameter (V) is controlled in spraying | Fan width (mm) | Spray gun bore (mm) |
| 14-16 | 0.6-0.7 | 150 | （1.1，2，2.5） | 280-300 | 1.4 |
Under table 5 spray parameters, for guarantee in spraying not sagging and solidify after often all over coating thickness, reach 0.07mm, the spray area V per second of robot
s0.045m
2/ s, coating quality V per second
m0.003Kg/s.
I cylinder straight tube face Control During Paint Spraying by Robot finish paint.
Post straight tube face robot finish paint spraying method is identical with cylinder straight tube face shop primer spraying method.Detailed process is:
A) determine housing rotating speed.During spray paint in formula (1) V
s, r, F be identical during with spraying shop primer, therefore the rotating speed of motor body is 0.0238r/s.
B) determine emanation spraying paint consumption.The pipeline loss M that sprays paint of robot
loss: 1kg, determines paint vehicle consumption according to formula (2);
C) by the paint vehicle calculating, weigh and adopt Control During Paint Spraying by Robot one time after 100 eye mesh screens filter.
II end socket spray paint: detailed process is,
A) determine motor body rotating speed; Motor body rotating speed is in Table 2;
B) determine paint vehicle consumption; The pipeline loss M that sprays paint of robot
loss: 1kg, to spray end socket be each end sockets of front and back, effectively paint vehicle need be multiplied by 2, therefore
M=(T
1+ T
2+ T
3+ T
4+ T
5) * V
m* 2+M
loss(3)
C) by the paint vehicle calculating, weigh and adopt Control During Paint Spraying by Robot one time after 100 eye mesh screens filter.
Step 8: housing cylinder section and front head and rear head enamelled coating solidify
Enamelled coating cold curing seven days.The motor body that the diameter that obtains surface spraying and have silicon rubber enamelled coating is 2000mm.
The present invention is solid propellant rocket outer surface silicone rubber coating Control During Paint Spraying by Robot forming method.The present invention is in conjunction with the performance of coating, Control During Paint Spraying by Robot parameter is studied, related process theoretical model when setting up robot and completing solid propellant rocket external surface coating, and the computational methods of key process parameter are proposed, for different model different coating molding technique parameter is provided by the method that provides.
The present invention can be used for each model engine enamelled coating robot shaping work that diameter is greater than 200mm, novel paint vehicle is adopted to technology theory pattern of the present invention in solid propellant rocket surface spray coating process technical research work, the spray parameters of Zhi Xujiang robot is combined adjustment with paint vehicle, determine best spraying rate Vs, Vm, can determine whole spraying process Control During Paint Spraying by Robot technological parameter.
The present invention provides research technology theory pattern and research method for there is thickness requirement coating forming technique on robot solid propellant rocket surface, accelerates research progress, improves Efficiency, has reduced research expenditure.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention
Fig. 2 is the duty of upset car when motor body is sprayed of spraying paint.In figure:
Paint spraying tooling 2. spray paint upset Che3. robot
The specific embodiment
The method that the motor body that the present embodiment is is 2000mm to diameter sprays, the geometry of housing outer surface is mainly by cylinder straight tube face, and the ellipsoidal head of two ends central opening forms.Detailed process is:
Step 1: paint spraying tooling is installed.During installation, motor body lifting, to spraying paint on upset car 2, is installed to paint spraying tooling 1 at the skirt end face at motor body two ends, and make described paint spraying tooling be positioned at the roller groove of upset car; Between paint spraying tooling and the cell wall of described roller groove, nothing is interfered.Described paint spraying tooling is all identical with upset car with the frock of using when spraying motor body in prior art with upset car.
Step 2: housing polishing, cleaning.Use 120 order sand paper to polish along machine direction to front head and rear head; Use 80 order sand paper to polish along machine direction to cylinder section.
With silk parcel absorbent gauze, dipping in ethyl acetate clears up surface of shell.Clean out rear with compressed air blowing surface of shell batting.
Step 3: shop primer.Shop primer on the cylinder section of motor body and the front head of motor body, rear head.Described shop primer adopts silicon rubber shop primer.During spraying, spray robot selects parameter in Table 1.
Table 1 shop primer spray parameters
| Viscosity (s/ is coated with 4 glasss) | Spray pressure (MPa) | Spray distance (mm) | Parameter (V) is controlled in spraying | Fan width (mm) | Spray gun bore (mm) |
| 32-42 | 0.6-0.7 | 150 | （2.5，2，2.5） | 250-300 | 1.4 |
Under table 1 spray parameters, for guarantee in spraying not sagging and solidify after often all over coating thickness, reach 0.1mm, the spray area V per second of robot
s0.045m
2/ s, coating quality V per second
m0.004Kg/s.
I cylinder straight tube face spraying shop primer
By 3 pairs of cylinder straight tube faces of robot, spray.During spraying, take housing to rotate vertically the mode of simultaneously carrying out with Control During Paint Spraying by Robot.During housing uniform rotation, robot remains static, and spraying profile is annulus.After every spraying one circle, Robot engine axial direction moves 150mm, and described displacement is 1/2nd of spraying fan width.Until complete the spraying to cylinder straight tube face.Detailed process is:
A) determine housing rotating speed
V
rotating speed=V
s/ (2 π rF) (1)
In formula (1): V
s: the spray area/m per second of robot
2/ s; R: cylinder section radius/m; F: fan width/m; V
turn speed: spraying rotating speed/r/s.
In the present embodiment, V
s=0.045m
2/ s, r=1m, F=0.3m.In being sprayed in formula (1), the rotating speed of motor body is 0.0238r/s.
B) determine paint vehicle consumption.By formula (2), determine paint vehicle consumption:
The pipeline loss M that sprays paint of robot
loss: 1kg, meanwhile, for guaranteeing the spraying of housing skirt end paint vehicle evenly, when calculating spraying length, skirt two ends respectively add the spraying length of F/2 fan width, therefore
In formula (2): L: spraying axial length/m; F: fan width/m; V
rotating speed: spraying rotating speed/r/s; V
m: coating quality Kg/s per second; M: paint vehicle quality/Kg.M
loss: the paint vehicle loss in pipeline.
In the present embodiment, L=1.986m; F=0.3m; V
rotating speed=0.0238r/s; V
m=0.004Kg/s; M
loss=1kg.In formula (2), obtain, cylinder section paint vehicle quality is 3.56kg.
C) by the paint vehicle calculating, weigh and after 100 eye mesh screens filter, cylinder straight tube face sprayed one time.
II front head and rear head spraying shop primer.
The ellipsoidal head spraying method of two ends central opening is housing uniform rotation, robot place's inactive state, spraying profile is annulus, after a circle to be sprayed, Robot engine end socket radial direction moves 150mm, described displacement is 1/2nd of spraying fan width, until complete front head and the spraying of rear head shop primer.Detailed process is:
A) determine housing rotating speed.Housing velocity of rotation while obtaining the spraying of the different spraying of end socket radius position according to formula (1), in Table 2.
Table 2GYD painting robot sprays end socket housing velocity of rotation
In table 2, r
1～r
5be respectively the radius of shell cover different parts; T
1～T
5be respectively and r
1～r
5corresponding position place turns around the required time.
B) determine paint vehicle consumption.The pipeline loss M that sprays paint of robot
loss: 1kg, to spray end socket be each end sockets of front and back, effectively paint vehicle need be multiplied by 2, therefore
M=(T
1+ T
2+ T
3+ T
4+ T
5) * V
m* 2+M
loss(3)
In the present embodiment, T
1=6.28s, T
2=12.56s, T
3=18.84s, T
4=25.12s, T
5=31.4s, V
m=0.004Kg/s, M
loss=1kg.The required paint vehicle quality of front head and rear head is 1.754kg.
C) by the paint vehicle calculating, weigh and after 100 eye mesh screens filter, front head and rear head sprayed one time.
Step 4: solidify.The motor body that is coated with shop primer is placed in indoor, sprays heat insulating coat after at room temperature solidifying 12h.
Step 5: spraying heat insulating coat.On the cylinder section of motor body and the front head of motor body, rear head, spray heat insulating coat.Described spraying heat insulating coat adopts silicon rubber heat insulating coat.
During spraying, spray robot selects parameter in Table 3.
Table 3 heat insulating coat spray parameters
| Viscosity (s/ is coated with 4 glasss) | Spray pressure (MPa) | Spray distance (mm) | Parameter (V) is controlled in spraying | Fan width (mm) | Spray gun bore (mm) |
| 25-30 | 0.6-0.7 | 150 | （2.7，2，2.5） | 250-300 | 1.4 |
Under table 3 spray parameters, for guarantee in spraying not sagging and solidify after often all over coating thickness, reach 0.1mm, the spray area V per second of robot
s0.045m
2/ s, coating quality V per second
m0.003Kg/s.
I cylinder straight tube face Control During Paint Spraying by Robot heat insulating coat
Cylinder straight tube face robot heat insulating coat spraying method is identical with cylinder straight tube face shop primer spraying method.
A) determine housing rotating speed.Spraying during heat insulating coat in formula (1) V
s, r, F be identical during with spraying shop primer, therefore the rotating speed of motor body is 0.0238r/s.
B) determine paint vehicle consumption.The pipeline loss M that sprays paint of robot
loss: 1kg, meanwhile, for guaranteeing the spraying of housing skirt end paint vehicle evenly, when calculating spraying length, skirt two ends respectively add the spraying length of F/2 fan width.Heat insulating coat specification requirement thickness is 1mm, and spraying pass is 10 times, and effectively paint vehicle need be multiplied by 10, therefore
In the present embodiment, L=1.986m; F=0.3m; V
rotating speed=0.0238r/s; V
m=0.003Kg/s; M
loss=1kg.In formula (3), obtain, paint vehicle consumption is 20kg.
C) by definite paint vehicle, weigh and adopt Control During Paint Spraying by Robot ten times after 60 eye mesh screens filter.
II end socket spraying heat insulating coat.
Front head with rear head heat insulating coat spraying method with identical with rear head shop primer spraying method to front head.Detailed process is:
A) determine housing rotating speed, when front head sprays heat insulating coat with rear head, end socket spraying position is identical with end socket shop primer spraying position, V in formula (1)
s, that r, F and front head and rear head spraying shop primer respectively spray position is identical, therefore motor body rotating speed is in Table 2.
B) determine paint vehicle consumption, the pipeline loss M that sprays paint of robot
loss: 1kg; To spray end socket be each end sockets of front and back, and heat insulating coat specification requirement thickness is 1mm, spraying pass is 10 times, effectively paint vehicle need be multiplied by 20, therefore
M=(T
1+ T
2+ T
3+ T
4+ T
5) * V
m* 20+M
loss(3)
In the present embodiment, T
1=6.28s, T
2=12.56s, T
3=18.84s, T
4=25.12s, T
5=31.4s, V
m=0.003Kg/s.The required paint vehicle quality of front head and rear head is 6.62kg.
C) by definite paint vehicle, weigh and adopt Control During Paint Spraying by Robot ten times after 60 eye mesh screens filter.
Step 6: spraying priming paint, described priming paint adopts silicon rubber priming paint.On the cylinder section of motor body and the front head of motor body, rear head, spray priming paint.Described spraying priming paint adopts silicon rubber priming paint.During spraying, spray robot selects parameter in Table 4.
Table 4 priming paint spray parameters
Under table 4 spray parameters, for guarantee in spraying not sagging and solidify after often all over coating thickness, reach 0.1mm, the spray area V per second of robot
s0.045m
2/ s, coating quality V per second
m0.005Kg/s.Detailed process is:
I cylinder straight tube face Control During Paint Spraying by Robot priming paint
Cylinder straight tube face robot priming paint spraying method is identical with cylinder straight tube face shop primer spraying method.
A) determine motor body rotating speed.Spraying during priming paint in formula (1) V
s, r, F be identical during with spraying shop primer, therefore the rotating speed of motor body is 0.0238r/s.
B) determine paint vehicle consumption.The pipeline loss M that sprays paint of robot
loss: 1kg, meanwhile, for guaranteeing the spraying of housing skirt end paint vehicle evenly, when calculating spraying length, skirt two ends respectively add the spraying length of F/2 fan width, therefore
In the present embodiment, in the present embodiment, L:1.986m; F=0.3m; V
rotating speed=0.0238r/s; V
m=0.005Kg/s; M
loss=1kg.In formula (5), obtain, cylinder section emanation spraying paint quality is 4.2kg.
C) by the paint vehicle calculating, weigh and adopt Control During Paint Spraying by Robot one time after 100 eye mesh screens filter.
II end socket spraying priming paint.Front head is identical with rear head shop primer spraying method with front head with rear head priming paint spraying method.
A) determine motor body rotating speed.When front head sprays priming paint with rear head, end socket spraying position is identical with end socket shop primer spraying position, V in formula (1)
s, r, F be all identical with front head and rear head spraying each position of shop primer.Motor body rotating speed is in Table 2
B) determine paint vehicle consumption.The pipeline loss M that sprays paint of robot
loss: 1kg, spray end socket and comprise front head and rear head, effectively paint vehicle need be multiplied by 2, therefore
M=(T
1+ T
2+ T
3+ T
4+ T
5) * V
m* 2+M
loss(3)
In the present embodiment, T
1=6.28s, T
2=12.56s, T
3=18.84s, T
4=25.12s, T
5=31.4s, V
m=0.005Kg/s.The required paint vehicle quality of front head and rear head is 1.942kg.
C) by the paint vehicle calculating, weigh and after 100 eye mesh screens filter, front head and rear head sprayed one time.
Step 7: spray paint, described finish paint adopts silicon rubber finish paint.Spray paint on the cylinder section of motor body and the front head of motor body, rear head.Described spray paint adopts silicon rubber finish paint.
During spraying, spray robot selects parameter in Table 5.
Table 5 finish paint spray parameters
| Viscosity (s/ is coated with 4 glasss) | Spray pressure (MPa) | Spray distance (mm) | Parameter (V) is controlled in spraying | Fan width (mm) | Spray gun bore (mm) |
| 14-16 | 0.6-0.7 | 150 | （1.1，2，2.5） | 280-300 | 1.4 |
Under table 5 spray parameters, for guarantee in spraying not sagging and solidify after often all over coating thickness, reach 0.07mm, the spray area V per second of robot
s0.045m
2/ s, coating quality V per second
m0.003Kg/s.
I cylinder straight tube face Control During Paint Spraying by Robot finish paint
Post straight tube face robot finish paint spraying method is identical with cylinder straight tube face shop primer spraying method.Detailed process is:
A) determine housing rotating speed.During spray paint in formula (1) V
s, r, F be identical during with spraying shop primer, therefore the rotating speed of motor body is 0.0238r/s.
B) determine emanation spraying paint consumption.The pipeline loss M that sprays paint of robot
loss: 1kg, meanwhile, for guaranteeing the spraying of housing skirt end paint vehicle evenly, when calculating spraying length, skirt two ends respectively add the spraying length of F/2 fan width, therefore
In the present embodiment, in the present embodiment, L=1.986m; F=0.3m; V
rotating speed=0.0238r/s; V
m=0.003Kg/s; M
loss=1kg.In formula (8), obtain, cylinder section emanation spraying paint quality is 2.9kg.
C) by the paint vehicle calculating, weigh and adopt Control During Paint Spraying by Robot one time after 100 eye mesh screens filter.
II end socket spray paint.Front head with rear head finish paint spraying method with identical with rear head shop primer spraying method to front head.
A) determine motor body rotating speed.When front head and rear head spray paint, end socket spraying position is identical with end socket shop primer spraying position, V in formula (1)
s, r, F and front head be identical with rear head spraying each position of shop primer, therefore motor body rotating speed is in Table 2
B) determine paint vehicle consumption.The pipeline loss M that sprays paint of robot
loss: 1kg, to spray end socket be each end sockets of front and back, effectively paint vehicle need be multiplied by 2, therefore
M=(T
1+ T
2+ T
3+ T
4+ T
5) * V
m* 2+M
loss(3)
In the present embodiment, T
1=6.28s, T
2=12.56s, T
3=18.84s, T
4=25.12s, T
5=31.4s, V
m=0.003Kg/s.The required paint vehicle quality of front head and rear head is 1.565kg.
C) by the paint vehicle calculating, weigh and adopt Control During Paint Spraying by Robot one time after 100 eye mesh screens filter.
Step 8: housing cylinder section and front head and rear head enamelled coating solidify.Enamelled coating cold curing seven days.The motor body that the diameter that obtains surface spraying and have silicon rubber enamelled coating is 2000mm.
Claims (1)
1. the method for a sprayed silicon rubber enamelled coating on motor body is characterized in that, it is characterized in that, detailed process is:
Step 1, paint spraying tooling is installed:
Step 2, housing polishing, cleaning:
Step 3, shop primer: at the spraying position of motor body shop primer; Described shop primer adopts silicon rubber shop primer;
I cylinder straight tube face spraying shop primer: during spraying, take housing to rotate vertically the mode of simultaneously carrying out with Control During Paint Spraying by Robot, spraying profile is annulus; After every spraying one circle, Robot engine axial direction moves 150mm, and described displacement is for 1/2nd of spraying fan width, until complete the spraying to cylinder straight tube face; During spraying, spray robot selects parameter to be:
Viscosity is that 32-42s/ is coated with 4 glasss, and spray pressure is 0.6-0.7MPa, and spray distance is 150mm, and spraying is controlled parameter and is respectively 2.5V, 2V and 2.5V, and fan width is 300mm, and spray gun bore is 1.4mm;
Under described spray parameters, for guarantee in spraying not sagging and solidify after often all over coating thickness, reach 0.1mm, the spray area V per second of robot
s0.045m
2/ s, coating quality V per second
m0.004Kg/s; Detailed process is:
A) determine housing rotating speed
V
rotating speed=V
s/ (2 π rF) (1)
Wherein: V
sthe spray area/m per second of robot
2/ s; R is cylinder section radius/m; F is fan width/m; V
rotating speedspraying rotating speed/r/s;
B) determine paint vehicle consumption; By formula (2), determine paint vehicle consumption:
M
loss: the paint vehicle loss in pipeline;
C) by the paint vehicle calculating, weigh and after 100 eye mesh screens filter, cylinder straight tube face sprayed one time;
II front head and rear head spraying shop primer: the ellipsoidal head spraying method of two ends central opening is housing uniform rotation, robot place's inactive state, spraying profile is annulus, after a circle to be sprayed, Robot engine end socket radial direction moves 150mm, described displacement is 1/2nd of spraying fan width, until complete front head and the spraying of rear head shop primer; Detailed process is:
A) determine motor body rotating speed: motor body velocity of rotation while determining the spraying of the different spraying of end socket radius position according to formula (1);
Table 1 GYD painting robot sprays the velocity of rotation of end socket motor body
In table 1, r
1～r
5be respectively the radius of shell cover different parts; T
1～T
5be respectively and r
1～r
5corresponding position place turns around the required time;
B) determine paint vehicle consumption: the pipeline loss M that sprays paint of robot
loss: 1kg, therefore
M=(T
1+ T
2+ T
3+ T
4+ T
5) * V
m* 2+M
loss(3)
The time that when T is Control During Paint Spraying by Robot end socket different parts, housing turns around,
C) by the paint vehicle calculating, weigh and after 100 eye mesh screens filter, front head and rear head sprayed one time;
Step 4, solidifies: the motor body that is coated with shop primer is placed in indoor, sprays heat insulating coat after at room temperature solidifying 12h;
Step 5: spraying heat insulating coat; On the cylinder section of motor body and the front head of motor body, rear head, spray heat insulating coat; Described spraying heat insulating coat adopts silicon rubber heat insulating coat; During spraying, spray robot selects parameter to be:
Viscosity is that 25-30s/ is coated with 4 glasss, and spray pressure is 0.6-0.7MPa, and spray distance is 150mm, and spraying is controlled parameter and is respectively 2.7V, 2V and 2.5V, and fan width is 300mm, and spray gun bore is 1.4mm;
For guarantee in spraying not sagging and solidify after often all over coating thickness, reach 0.1mm, the spray area V per second of robot
s0.045m
2/ s, coating quality V per second
m0.003Kg/s;
I cylinder straight tube face Control During Paint Spraying by Robot heat insulating coat: detailed process is:
A) determine motor body rotating speed: by formula (1), determine that the rotating speed of motor body is 0.0238r/s;
B) determine paint vehicle consumption: the pipeline loss M that sprays paint of robot
loss: 1kg, determines paint vehicle consumption according to formula (4):
C) by definite paint vehicle, weigh and pass through Control During Paint Spraying by Robot ten times after 60 eye mesh screens filter;
II end socket spraying heat insulating coat: detailed process is:
A) determine motor body rotating speed: by formula (1), determine the rotating speed of motor body, therefore motor body rotating speed is in Table 1;
B) determine paint vehicle consumption: the pipeline loss M that sprays paint of robot
loss: 1kg; To spray end socket be each end sockets of front and back, and heat insulating coat specification requirement thickness is 1mm, spraying pass is 10 times, effectively paint vehicle need be multiplied by 20, therefore
M=(T
1+ T
2+ T
3+ T
4+ T
5) * V
m* 20+M
loss(5)
C) by definite paint vehicle, weigh and adopt Control During Paint Spraying by Robot ten times after 60 eye mesh screens filter;
Step 6: spraying priming paint, described priming paint adopts silicon rubber priming paint; On the cylinder section of motor body and the front head of motor body, rear head, spray priming paint; Described spraying priming paint adopts silicon rubber priming paint; During spraying, spray robot selects parameter to be:
Viscosity is that 14-16s/ is coated with 4 glasss, and spray pressure is 0.6-0.7MPa, and spray distance is 150mm, and spraying is controlled parameter and is respectively 1.3V, 2V and 2.5V, and fan width is 300mm, and spray gun bore is 1.4mm;
Under described spray parameters, for guarantee in spraying not sagging and solidify after often all over coating thickness, reach 0.1mm, the spray area V per second of robot
s0.045m
2/ s, coating quality V per second
m0.005Kg/s; Detailed process is:
I cylinder straight tube face Control During Paint Spraying by Robot priming paint: detailed process is,
A) determine housing rotating speed: spraying during priming paint in formula (1) V
s, r, F be identical during with spraying shop primer, therefore the rotating speed of motor body is 0.0238r/s;
B) determine paint vehicle consumption: the pipeline loss M that sprays paint of robot
loss: 1kg, determines paint vehicle consumption according to formula (2);
C) by the paint vehicle calculating, weigh and adopt Control During Paint Spraying by Robot one time after 100 eye mesh screens filter;
II end socket spraying priming paint: detailed process is,
A) determine housing rotating speed: when front head sprays priming paint with rear head, end socket spraying position is identical with end socket shop primer spraying position, V in formula (1)
s, r, F and front head be identical with rear head spraying each position of shop primer, therefore motor body rotating speed is in Table 1:
B) determine paint vehicle consumption: the pipeline loss M that sprays paint of robot
loss: 1kg, spray end socket and comprise front head and rear head, effectively paint vehicle need be multiplied by 2, therefore
M=(T
1+ T
2+ T
3+ T
4+ T
5) * V
m* 2+M
loss(3)
C) by the paint vehicle calculating, weigh and after 100 eye mesh screens filter, front head and rear head sprayed one time;
Step 7: spray paint, described finish paint adopts silicon rubber finish paint; Spray paint on the cylinder section of motor body and the front head of motor body, rear head; Described spray paint adopts silicon rubber finish paint;
During spraying, spray robot selects parameter to be:
Viscosity is that 14-16s/ is coated with 4 glasss, and spray pressure is 0.6-0.7MPa, and spray distance is 150mm, and spraying is controlled parameter and is respectively 1.1V, 2V and 2.5V, and fan width is 300mm, and spray gun bore is 1.4mm;
Under described spray parameters, for guarantee in spraying not sagging and solidify after often all over coating thickness, reach 0.07mm, the spray area V per second of robot
s0.045m
2/ s, coating quality V per second
m0.003Kg/s;
I cylinder straight tube face Control During Paint Spraying by Robot finish paint: post straight tube face robot finish paint spraying method is identical with cylinder straight tube face shop primer spraying method; Detailed process is:
A) determine housing rotating speed: during spray paint in formula (1) V
s, r, F be identical during with spraying shop primer, therefore the rotating speed of motor body is 0.0238r/s;
B) determine emanation spraying paint consumption: the pipeline loss M that sprays paint of robot
loss: 1kg, determines paint vehicle consumption according to formula (2);
C) by the paint vehicle calculating, weigh and adopt Control During Paint Spraying by Robot one time after 100 eye mesh screens filter;
II end socket spray paint: detailed process is:
A) determine motor body rotating speed; Motor body rotating speed is in Table 1;
B) determine paint vehicle consumption; The pipeline loss M that sprays paint of robot
loss: 1kg, to spray end socket be each end sockets of front and back, effectively paint vehicle need be multiplied by 2, therefore
M=(T
1+ T
2+ T
3+ T
4+ T
5) * V
m* 2+M
loss(3)
C) by the paint vehicle calculating, weigh and adopt Control During Paint Spraying by Robot one time after 100 eye mesh screens filter;
Step 8: housing cylinder section and front head and rear head enamelled coating solidify
Enamelled coating cold curing seven days; The motor body that the diameter that obtains surface spraying and have silicon rubber enamelled coating is 2000mm.
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| CN201310507260.3A CN103551290B (en) | 2013-10-24 | 2013-10-24 | Method for spraying silicone rubber paint layer on engine shell |
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| CN103551290B true CN103551290B (en) | 2014-09-10 |
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| CN104324861B (en) * | 2014-08-12 | 2016-06-15 | 清华大学 | A kind of multiparameter time-varying Control During Paint Spraying by Robot method |
| CN106670077A (en) * | 2016-11-30 | 2017-05-17 | 成都叮当自动化设备有限公司 | Repairing method for external lacquer damaged surface of engine |
| CN106694341A (en) * | 2016-11-30 | 2017-05-24 | 成都叮当自动化设备有限公司 | Method for repairing damage surface of engine lining |
| CN106493051A (en) * | 2016-11-30 | 2017-03-15 | 成都叮当自动化设备有限公司 | A kind of engine lining spraying method |
| CN106583187A (en) * | 2016-11-30 | 2017-04-26 | 成都叮当自动化设备有限公司 | Engine exterior paint spraying method |
| CN107299985A (en) * | 2017-06-14 | 2017-10-27 | 格特拉克（江西）传动系统有限公司 | A kind of pair of clutch speed-changing tank shell gas-tight hole seepage leakage technique |
| CN108953001A (en) * | 2018-07-11 | 2018-12-07 | 湖北航聚科技有限公司 | A kind of outer heat shield production method of solid propellant rocket |
| CN109201435A (en) * | 2018-11-08 | 2019-01-15 | 北京星航机电装备有限公司 | A kind of preparation process of silicone rubber kinds thermal protection coating |
| CN109365235A (en) * | 2018-12-06 | 2019-02-22 | 内蒙古航天红峡化工有限公司 | A kind of on-line mixing and spraying method of the anti-laser coatings of solid propellant rocket |
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