CN108970931A - A kind of water paint spraying technique and its application - Google Patents
A kind of water paint spraying technique and its application Download PDFInfo
- Publication number
- CN108970931A CN108970931A CN201810928940.5A CN201810928940A CN108970931A CN 108970931 A CN108970931 A CN 108970931A CN 201810928940 A CN201810928940 A CN 201810928940A CN 108970931 A CN108970931 A CN 108970931A
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- Prior art keywords
- spraying
- paint
- priming paint
- finishing coat
- workpiece
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
Abstract
The present invention relates to spraying technology field, a kind of water paint spraying technique and its application are disclosed.Spraying process of the invention includes in dry workpiece surface spraying priming paint；Sudden strain of a muscle dry run is carried out to the priming paint for being sprayed at workpiece surface；In the workpiece surface spraying finishing coat for being coated with priming paint；Curing operation is carried out to the priming paint and finishing coat for being sprayed at workpiece.Wherein priming paint and finishing coat are water paint；The temperature for dodging dry run is 50 DEG C -80 DEG C.The spraying process, which is stablized, easily to be realized, spraying qualification rate is high, and environmental pollution is small.Water paint spraying technique of the invention can be applied in the processing of motorcycle engine appearance member.
Description
Technical field
The present invention relates to spraying technology fields, in particular to a kind of water paint spraying technique and its application.
Background technique
Existing spraying process is mostly oil paint spraying process, especially in the manufacture of engine appearance member, is being sprayed
Applying processing step and device parameter etc. is designed by the spraying of oil paint.And oil paint discharges exhaust gas to environment
It pollutes larger.Carrying out spraying using water paint can satisfy higher environmental requirement, but in the production of engine component, also
Mature spraying process without water paint spraying.
Summary of the invention
The purpose of the present invention is to provide a kind of water paint spraying technique and its applications, can be suitable for outside engine
The spraying of part is seen, process stabilizing is easily realized, spraying qualification rate is high, and small pollution of the environment.
The embodiment of the present invention is achieved in that
The water paint spraying technique of the embodiment of the present invention, is applied to spraying engine appearance member, and spraying process includes:
In dry workpiece surface spraying priming paint, priming paint is water paint；
Sudden strain of a muscle dry run is carried out to the priming paint for being sprayed at workpiece surface, the temperature for dodging dry run is 50 DEG C -80 DEG C；
In the workpiece surface spraying finishing coat for being coated with priming paint, finishing coat is water-based material；
Curing operation is carried out to the priming paint and finishing coat for being sprayed at workpiece.
In an embodiment of the present invention, in 18 DEG C -35 DEG C of ring the dry workpiece surface spraying priming paint the step of
It is carried out under border.
In an embodiment of the present invention, the dry workpiece surface spraying priming paint the step of in relative humidity 40%-
It is carried out in the environment of 70%.
In an embodiment of the present invention, in the dry workpiece surface spraying priming paint the step of, priming paint is in spraying
Viscosity control is to measure the resulting viscosity number of priming paint using 2 flow cups of painting in 14s-20s, 14s-20s.
In an embodiment of the present invention, the when a length of 9min-15min for dodging dry run, the temperature for dodging dry run is 50
℃-80℃。
In an embodiment of the present invention, in the workpiece surface spraying finishing coat for being coated with priming paint the step of, use is quiet
The mode of electrospray carries out finishing coat spraying to workpiece.
In an embodiment of the present invention, the voltage of electrostatic spraying is 20KV-40KV.
In an embodiment of the present invention, it is using painting 2 that finishing coat viscosity in spraying, which is controlled in 12s-18s, 12s-18s,
Flow cup measures the resulting viscosity number of finishing coat.
In an embodiment of the present invention, before the dry workpiece surface spraying priming paint the step of, water paint spray
Apply technique further include workpiece is cleaned, Passivation Treatment.
Present invention also provides the embodiment of the present invention water paint spraying technique processing motorcycle engine appearance
Application in part.
The beneficial effect of the embodiment of the present invention is:
The spraying process of the embodiment of the present invention includes in dry workpiece surface spraying priming paint；To being sprayed at workpiece surface
Priming paint carries out sudden strain of a muscle dry run；In the workpiece surface spraying finishing coat for being coated with priming paint；The priming paint and finishing coat for being sprayed at workpiece are carried out
Curing operation.Wherein priming paint and finishing coat are water paint；The temperature for dodging dry run is 50 DEG C -80 DEG C.The spraying process is stablized easy
It realizes, spraying qualification rate is high, and environmental pollution is small.The water paint spraying technique of the embodiment of the present invention can be applied to rub
In the processing of motorcycle engine appearance member.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
The water paint spraying technique of the embodiment of the present invention and its application are specifically described below.
The water paint spraying technique of the embodiment of the present invention the following steps are included:
One, Workpiece inspection
It tests first to workpiece to be sprayed, test range includes surface polishing quality, bump injury, wipes scuffing, hair
Now the workpiece with surface quality problems should screen, and the workpiece of surface quality qualification is walked into subsequent spraying process
Suddenly.
Two, it is hung on workpiece
Workpiece to be sprayed, which is taken, to handle with care, be should be noted that when hanging on workpiece and avoided occurring rubbing and causing to scratch.Work
Presentation quality should be checked before hanging on part, prevent to hang on waste material.
Three, degreasing
Defatting step is used using concentration proportioning as 5% sodium hydroxide, sodium carbonate, sodium metasilicate, sodium gluconate and table
The degreasant solution of face activating agent composition carries out spray oil removing cleaning to workpiece under 0.06Mpa-0.12Mpa spray pressure, to go
Except the greasy dirt of workpiece surface, advantage is provided for each step of subsequent spraying process.
Four, it cleans, go out light and passivation
When workpiece is articles made of aluminium alloy, the workpiece after alkaline etching can be cleaned and use out light processing, light processing had been both out
The alkaline matter of workpiece surface can be neutralized, it is suppressed that be not involved in alkali when generating the rate of oxidation film once again, and alkaline etching can be removed
Property reaction be but still adsorbed on the loose ash shape substance of article surface and relatively firm black film (these substances be mainly free
Silicon).Passivation Treatment make workpiece surface formed dense oxide film layer, can increase product corrosion resistance of surface and subsequent spraying link
The binding force of middle paint film and metal base.
Five, pure water is washed
Workpiece is rinsed lower than the pure water of 10 μ S/cm using conductivity, remove the remaining inorganic salts of workpiece surface at
Point.
Six, it dries
Drying furnace temperature should be kept between 160 ± 10 DEG C, and time general control is within 30-40 minutes, winter or easily product
Water conservancy project part can suitably increase by 5 DEG C of -10 DEG C of drying temperatures；
Seven, basecoat paint
In dry workpiece surface spraying priming paint, coating is mainly enabled firmly to be attached to workpiece substrate surface, and energy
Increase the binding force with topcoat, plays a part of important form a connecting link.Basecoat paint has the good property filled and led up simultaneously,
The defects of slight hole eye and lines on coated article surface can be eliminated, to form even curface so that final products have it is good
Good planarization, the clarity and richness of entire paint film are improved in plentiful surface.
The embodiment of the present invention carries out basecoat paint to workpiece by the way of electrostatic spraying, specifically, using tracking mode
Reciprocal electrostatic rotating cup machine+mechanical arm spraying method carries out basecoat paint to workpiece.
The environment temperature of basecoat paint is controlled at 18 DEG C -35 DEG C, relative humidity 40%-70% is able to ascend water paint
The volatilization of middle moisture, avoid because in spraying process because moisture evaporation it is excessively slow caused by the spraying disadvantage such as sagging, heap side.Spraying process
Middle priming paint viscosity control (is measured) between 14s-20s using -2 flow cups are applied, and viscosity is excessively high to cause atomization badness, and viscosity is too low
Cause easy sagging in spraying process.Compressed air pressure used is sprayed in 0.4Mpa-0.6Mpa, it is excessively high to cause to waste, it is too low to make
Atomization badness is sprayed at air pressure deficiency.
In embodiments of the present invention, the water paint that aqueous priming paint used in basecoat paint is 220 DEG C of high temperature resistant, was both able to satisfy
Workpiece performance requirement, and the VOC content in coating waste gas discharge can be made to be no more than 56mg/m3Discharge standard.
Eight, priming paint dodges dry
The purpose of this step is: accelerating the moisture evaporation rate of primer coating, guarantees the primer coating water before spray paint
Divide content few, it will not be because of defect caused by priming paint moisture evaporation in final hot setting；Workpiece is carried out in finishing coat spraying simultaneously in advance
Preheating.
In embodiments of the present invention, dry temperature control is dodged at 50 DEG C -80 DEG C, and flash-off time control is in 9min-15min, temperature
It spends low moisture rate of volatilization slowly and can not play and dodge dry exsiccation, temperature is excessively high to cause the too fast generation paint film of moisture evaporation to lack
It falls into, flash-off time is too short to cause moisture evaporation amount few, and moisture content is high in primer coating.
Nine, finishing coat sprays
The step includes in the workpiece surface spraying finishing coat for being coated with priming paint, it is intended that lacquer painting spraying can be improved
Vividness, glossiness, the plumpness of workpiece surface make workpiece have good color and appearance, while playing to workpiece substrate
Protective effect extends metal product service life so that product has certain Corrosion Protection and weather resistance.
Finishing coat spraying uses electrostatic spraying mode, similar with basecoat paint, and finishing coat spraying uses the reciprocal electrostatic rotating of tracking mode
Cup machine+artificial electrostatic hand spray mode carries out finishing coat spraying to workpiece；Spray booth temperature is controlled at 18 DEG C -35 DEG C, relative humidity 40%-
70%, be able to ascend the volatilization of moisture in water paint, avoid because in spraying process because moisture evaporation it is excessively slow caused by sagging, hair
The spraying disadvantage such as spend.The control of finishing coat viscosity (is measured) in 12s-18s using -2 flow cups are applied in spraying process, and viscosity is excessively high to be caused
Atomization badness, so that it is uniform to be not easy spraying；Viscosity is too low to cause easy sagging in spraying process, also influences coating quality.Spraying institute
It is excessively high to cause to waste with compressed air pressure in 0.4Mpa-0.6Mpa, it is too low that air pressure deficiency is caused to spray atomization badness.Electrostatic
Spray voltage can be improved the utilization rate of coating in spraying process between 20KV-40KV.
Ten, solidify
The priming paint and finishing coat of workpiece surface are solidified, hinge reaction occurs for coating at high temperature, ultimately forms firm
Film layer, will not be dissolved easily by chemical solvent again or by thermal softening.Workpiece temperature reaches 150 DEG C or more when solidification, the time
15min or more can allow the sufficient hinge of coating to solidify in this way, and the time is too short or temperature is too low will cause solidification hinge not
It is enough.In embodiments of the present invention, solidification temperature is 150 DEG C -180 DEG C, time 15min-20min.
The water paint spraying technique of the embodiment of the present invention can be applied in the processing of motorcycle engine appearance member.Through existing
Field production test, current every production line production capacity can reach 20000/day or more, and in winter and summer can guarantee 90%
Above spraying qualification rate.Coating waste gas VOC content≤40mg/m after replacement water paint after measured3, can satisfy higher
Environmental requirement.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of water paint spraying technique provided in this embodiment is applied to spraying motorcycle engine appearance member, the work
Skill includes the process flow using above-mentioned introduction, dries-priming paint spray to workpiece extension-degreasing-passivation-pure water is washed-of testing-go up
Dry-finishing coat spraying-solidification is dodged in painting-priming paint.Workpiece inspection step to baking step mode of operation and parameter according to upper
Content is stated to be controlled.Basecoat paint described in detail below to curing schedule concrete mode and parameter.
In the present embodiment, the spray booth temperature of basecoat paint process is 18 DEG C, relative humidity 40%, and priming paint viscosity is 20s,
Spraying method uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode.
Then sudden strain of a muscle dry run is carried out to the priming paint for being sprayed at workpiece surface, the temperature for dodging dry run is 50 DEG C, dodges dry run
When a length of 15min.
Then, in the workpiece surface spraying finishing coat for being coated with priming paint, finishing coat is carried out to workpiece by the way of electrostatic spraying
Spraying.Finishing coat spraying also uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode, and the viscosity control of finishing coat is 18s,
Spray booth temperature is 18 DEG C, and the voltage of electrostatic spraying is 40KV.
Curing operation finally is carried out to the priming paint and finishing coat for being sprayed at workpiece.
Embodiment 2
A kind of water paint spraying technique provided in this embodiment is applied to spraying motorcycle engine appearance member, the work
Skill includes the process flow using above-mentioned introduction, i.e., dries-priming paint to workpiece extension-degreasing-passivation-pure water is washed-of testing-go up
Dry-finishing coat spraying-solidification is dodged in spraying-priming paint.Workpiece inspection step to baking step mode of operation and parameter according to
Above content is controlled.Basecoat paint described in detail below to curing schedule concrete mode and parameter.
In the present embodiment, the spray booth temperature of basecoat paint process is 24 DEG C, relative humidity 50%, and priming paint viscosity is 18s,
Spraying method uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode.
Then sudden strain of a muscle dry run is carried out to the priming paint for being sprayed at workpiece surface, the temperature for dodging dry run is 60 DEG C, dodges dry run
When a length of 13min.
Then, in the workpiece surface spraying finishing coat for being coated with priming paint, finishing coat is carried out to workpiece by the way of electrostatic spraying
Spraying.Finishing coat spraying also uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode, and the viscosity control of finishing coat is 18s,
Spray booth temperature is 24 DEG C, and the voltage of electrostatic spraying is 32KV.
Curing operation finally is carried out to the priming paint and finishing coat for being sprayed at workpiece.
Embodiment 3
A kind of water paint spraying technique provided in this embodiment is applied to spraying motorcycle engine appearance member, the work
Skill includes the process flow using above-mentioned introduction, dries-priming paint spray to workpiece extension-degreasing-passivation-pure water is washed-of testing-go up
Dry-finishing coat spraying-solidification is dodged in painting-priming paint.Workpiece inspection step to baking step mode of operation and parameter according to upper
Content is stated to be controlled.Basecoat paint described in detail below to curing schedule concrete mode and parameter.
In the present embodiment, the spray booth temperature of basecoat paint process is 30 DEG C, relative humidity 60%, and priming paint viscosity is 16s,
Spraying method uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode.
Then sudden strain of a muscle dry run is carried out to the priming paint for being sprayed at workpiece surface, the temperature for dodging dry run is 70 DEG C, dodges dry run
When a length of 11min.
Then, in the workpiece surface spraying finishing coat for being coated with priming paint, finishing coat is carried out to workpiece by the way of electrostatic spraying
Spraying.Finishing coat spraying also uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode, and the viscosity control of finishing coat is 14s,
Spray booth temperature is 30 DEG C, and the voltage of electrostatic spraying is 25KV.
Curing operation finally is carried out to the priming paint and finishing coat for being sprayed at workpiece.
Embodiment 4
A kind of water paint spraying technique provided in this embodiment is applied to spraying motorcycle engine appearance member, the work
Skill includes the process flow using above-mentioned introduction, dries-priming paint spray to workpiece extension-degreasing-passivation-pure water is washed-of testing-go up
Dry-finishing coat spraying-solidification is dodged in painting-priming paint.Workpiece inspection step to baking step mode of operation and parameter according to upper
Content is stated to be controlled.Basecoat paint described in detail below to curing schedule concrete mode and parameter.
In the present embodiment, the spray booth temperature of basecoat paint process is 35 DEG C, relative humidity 70%, and priming paint viscosity is 14s,
Spraying method uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode.
Then sudden strain of a muscle dry run is carried out to the priming paint for being sprayed at workpiece surface, the temperature for dodging dry run is 80 DEG C, dodges dry run
When a length of 9min.
Then, in the workpiece surface spraying finishing coat for being coated with priming paint, finishing coat is carried out to workpiece by the way of electrostatic spraying
Spraying.Finishing coat spraying also uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode, and the viscosity control of finishing coat is 12s,
Spray booth temperature is 35 DEG C, and the voltage of electrostatic spraying is 20KV.
Curing operation finally is carried out to the priming paint and finishing coat for being sprayed at workpiece.
Embodiment 5
A kind of water paint spraying technique provided in this embodiment is applied to spraying motorcycle engine appearance member, the work
Skill includes the process flow using above-mentioned introduction, dries-priming paint spray to workpiece extension-degreasing-passivation-pure water is washed-of testing-go up
Dry-finishing coat spraying-solidification is dodged in painting-priming paint.Workpiece inspection step to baking step mode of operation and parameter according to upper
Content is stated to be controlled.Basecoat paint described in detail below to curing schedule concrete mode and parameter.
In the present embodiment, the spray booth temperature of basecoat paint process is 18 DEG C, relative humidity 40%, and priming paint viscosity is 20s,
Spraying method uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode.
Then sudden strain of a muscle dry run is carried out to the priming paint for being sprayed at workpiece surface, the temperature for dodging dry run is 70 DEG C, dodges dry run
When a length of 11min.
Then, in the workpiece surface spraying finishing coat for being coated with priming paint, finishing coat is carried out to workpiece by the way of electrostatic spraying
Spraying.Finishing coat spraying also uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode, and the viscosity control of finishing coat is 18s,
Spray booth temperature is 18 DEG C, and the voltage of electrostatic spraying is 30KV.
Curing operation finally is carried out to the priming paint and finishing coat for being sprayed at workpiece.
Embodiment 6
A kind of water paint spraying technique provided in this embodiment is applied to spraying motorcycle engine appearance member, the work
Skill includes the process flow using above-mentioned introduction, dries-priming paint spray to workpiece extension-degreasing-passivation-pure water is washed-of testing-go up
Dry-finishing coat spraying-solidification is dodged in painting-priming paint.Workpiece inspection step to baking step mode of operation and parameter according to upper
Content is stated to be controlled.Basecoat paint described in detail below to curing schedule concrete mode and parameter.
In the present embodiment, the spray booth temperature of basecoat paint process is 30 DEG C, relative humidity 60%, and priming paint viscosity is 16s,
Spraying method uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode.
Then sudden strain of a muscle dry run is carried out to the priming paint for being sprayed at workpiece surface, the temperature for dodging dry run is 50 DEG C, dodges dry run
When a length of 15min.
Then, in the workpiece surface spraying finishing coat for being coated with priming paint, finishing coat is carried out to workpiece by the way of electrostatic spraying
Spraying.Finishing coat spraying also uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode, and the viscosity control of finishing coat is 14s,
Spray booth temperature is 30 DEG C, and the voltage of electrostatic spraying is 32KV.
Curing operation finally is carried out to the priming paint and finishing coat for being sprayed at workpiece.
Embodiment 7
A kind of water paint spraying technique provided in this embodiment is applied to spraying motorcycle engine appearance member, the work
Skill includes the process flow using above-mentioned introduction, dries-priming paint spray to workpiece extension-degreasing-passivation-pure water is washed-of testing-go up
Dry-finishing coat spraying-solidification is dodged in painting-priming paint.Workpiece inspection step to baking step mode of operation and parameter according to upper
Content is stated to be controlled.Basecoat paint described in detail below to curing schedule concrete mode and parameter.
In the present embodiment, the spray booth temperature of basecoat paint process is 24 DEG C, relative humidity 50%, and priming paint viscosity is 20s,
Spraying method uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode.
Then sudden strain of a muscle dry run is carried out to the priming paint for being sprayed at workpiece surface, the temperature for dodging dry run is 70 DEG C, dodges dry run
When a length of 13min.
Then, in the workpiece surface spraying finishing coat for being coated with priming paint, finishing coat is carried out to workpiece by the way of electrostatic spraying
Spraying.Finishing coat spraying also uses the reciprocal electrostatic rotating cup machine+mechanical arm spraying method of tracking mode, and the viscosity control of finishing coat is 18s,
Spray booth temperature is 24 DEG C, and the voltage of electrostatic spraying is 40KV.
Curing operation finally is carried out to the priming paint and finishing coat for being sprayed at workpiece.
In conclusion the spraying process of the embodiment of the present invention includes in dry workpiece surface spraying priming paint；To being sprayed at
The priming paint of workpiece surface carries out sudden strain of a muscle dry run；In the workpiece surface spraying finishing coat for being coated with priming paint；To the priming paint for being sprayed at workpiece
Curing operation is carried out with finishing coat.Wherein priming paint and finishing coat are water paint；The temperature for dodging dry run is 50 DEG C -80 DEG C.The spraying
Process stabilizing easily realizes that spraying qualification rate is high, and environmental pollution is small.The water paint spraying technique of the embodiment of the present invention can
To be applied in the processing of motorcycle engine appearance member.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of water paint spraying technique is applied to spraying engine appearance member, which is characterized in that the spraying process packet
It includes:
In dry workpiece surface spraying priming paint, the priming paint is water paint；
Sudden strain of a muscle dry run is carried out to the priming paint for being sprayed at the workpiece surface, the temperature for dodging dry run is 50 DEG C -80 DEG C；
In the workpiece surface spraying finishing coat for being coated with the priming paint, the finishing coat is water-based material；
Curing operation is carried out to the priming paint for being sprayed at the workpiece and the finishing coat.
2. water paint spraying technique according to claim 1, which is characterized in that in dry workpiece surface spraying priming paint
The step of carried out in the environment of 18 DEG C -35 DEG C.
3. water paint spraying technique according to claim 1, which is characterized in that in dry workpiece surface spraying priming paint
The step of carried out in the environment of relative humidity 40%-70%.
4. water paint spraying technique according to claim 1, which is characterized in that in dry workpiece surface spraying priming paint
The step of in, in spraying, in 14s-20s, the 14s-20s is using applying -2 flow cups measurement institute to the priming paint for viscosity control
State the resulting viscosity number of priming paint.
5. water paint spraying technique according to claim 1, which is characterized in that it is described dodge dry run when it is a length of
9min-15min, the temperature for dodging dry run are 50 DEG C -80 DEG C.
6. water paint spraying technique according to any one of claims 1-5, which is characterized in that be coated with the bottom
In the step of workpiece surface spraying finishing coat of paint, finishing coat spraying is carried out to the workpiece by the way of electrostatic spraying.
7. water paint spraying technique according to claim 6, which is characterized in that the voltage of the electrostatic spraying is
20KV-40KV。
8. water paint spraying technique according to claim 6, which is characterized in that finishing coat viscosity in spraying controls
It is to measure the resulting viscosity number of finishing coat using 2 flow cups of painting in 12s-18s, the 12s-18s.
9. water paint spraying technique according to claim 1, which is characterized in that in dry workpiece surface spraying priming paint
The step of before, the water paint spraying technique further include the workpiece is cleaned, Passivation Treatment.
10. water paint spraying technique of any of claims 1-9 is in processing motorcycle engine appearance member
Using.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114054315A (en) * | 2021-12-06 | 2022-02-18 | 雷沃工程机械集团有限公司 | Water-based paint coating process method for excavator structural part |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114054315A (en) * | 2021-12-06 | 2022-02-18 | 雷沃工程机械集团有限公司 | Water-based paint coating process method for excavator structural part |
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