CN111229568A - Product gradient color spraying method - Google Patents
Product gradient color spraying method Download PDFInfo
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- CN111229568A CN111229568A CN202010050901.7A CN202010050901A CN111229568A CN 111229568 A CN111229568 A CN 111229568A CN 202010050901 A CN202010050901 A CN 202010050901A CN 111229568 A CN111229568 A CN 111229568A
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- Prior art keywords
- workpiece
- spraying
- magnetic field
- drying
- paint
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- 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.)
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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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/065—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones
- B05D5/066—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones achieved by multilayers
-
- 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
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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
- B05D7/02—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 to macromolecular substances, e.g. rubber
-
- 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
- B05D7/14—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 to metal, e.g. car bodies
- B05D7/16—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 to metal, e.g. car bodies using synthetic lacquers or varnishes
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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
- B05D7/24—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 for applying particular liquids or other fluent materials
- B05D7/26—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 for applying particular liquids or other fluent materials synthetic lacquers or varnishes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a product gradient color spraying method, and relates to the field of product spraying. The method comprises the steps of internal stress elimination, polishing treatment, cleaning treatment, drying and plugging treatment, primer spraying and coloring spraying, wherein a workpiece is placed above a magnetic field generating device or a magnet, the strength of a magnetic field and the coverage of the magnetic field on the workpiece are changed, the workpiece is sprayed in a gas-mixed electrostatic mode, paint with negative electricity is adsorbed on the surface of the workpiece under the action of the magnetic field, the paint is more at the position with high magnetic field strength and less at the position with low magnetic field strength, drying treatment is carried out after one-time spraying is finished, electrostatic treatment needs to be released in a grounding mode before drying, the coverage of the magnetic field on the workpiece is changed, the color of the paint is changed, spraying is carried out again, and the processes are repeated until the coloring spraying and varnish spraying of the workpiece are finished. The invention can reduce the use of coloring paint, and the multi-level spraying can ensure the consistency of the overall spraying thickness.
Description
Technical Field
The invention relates to the technical field of product spraying, in particular to a product gradient spraying method.
Background
The spray coating is applied to the surface of the object to be coated by dispersing into uniform and fine droplets by means of a spray gun or a disc atomizer by means of pressure or centrifugal force. The method can be divided into air spraying, airless spraying, electrostatic spraying and various derivative modes of the basic spraying form, such as large-flow low-pressure atomized spraying, thermal spraying, automatic spraying, multi-group spraying and the like. The gradual change color is the color of an object which is gradually changed from light to dark or from dark to light or is slowly transited from one color to another color, and is full of the changing and endless mystery wave and romantic breath.
The existing gradient spraying is covering type spraying above the existing gradient spraying on the basis of another color, and the gradient effect is achieved. But the amount of paint sprayed at the edges of the two colors is not well controlled, and the gradual change effect cannot be achieved. Meanwhile, the color sprayed firstly is a part of the surface of the product, and then the color is covered and sprayed by the second color to achieve the effect of gradient color, so that excessive pigment coverage is caused, waste is caused, and the defects that the thicknesses of paint materials are inconsistent at the intersection of two colors and a pure color are caused.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a product gradient spraying method, which solves the problems of color waste and spraying thickness difference of the existing gradient spraying.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a product gradient spraying method comprises the following steps:
sp 1: internal stress relief
If the selected base material needs to eliminate the internal stress, the selected base material is processed respectively according to the property of the workpiece, if the base material is a metal piece, the internal stress can be eliminated in an annealing mode, the cooling mode is furnace cooling, if the base material is a plastic material, the base material can be heated according to the concrete material of the plastic, the temperature is controlled to be 30-80 ℃, the temperature duration is 30min, and if the selected base material has no internal stress, the step is skipped, and the next operation is carried out;
sp 2: polishing treatment
Checking whether the workpiece has concave damage after being raised, if so, removing the raised part by using a cutter, if so, filling the workpiece by using a material which is consistent with the base material or has similar performance, polishing the workpiece by using 500-mesh abrasive paper for rough grinding, further polishing by using 1000-mesh abrasive paper, and if not, discarding;
sp 3: cleaning treatment
Placing the workpiece on a cleaning frame, washing the workpiece in a clean water spraying mode for 10-15 min, soaking the workpiece in an ethanol solution when the workpiece is drained until no water drips, pumping air into the solution for 15-20 min, and draining after the soaking is finished;
sp 4: drying and plugging treatment
Placing the cleaned workpiece in a drying chamber, drying by using a hot air blowing mode, controlling the temperature of hot air at 50-120 ℃, sending the workpiece into a dust-free workshop after drying, and covering and filling areas such as holes, edges and grooves on the workpiece, which do not need paint spraying, with stickers or adhesive tapes;
sp 5: primer spray
Spraying the surface of the workpiece in an air atomization mode to ensure uniform spraying, and drying;
sp 6: painting and spraying
Placing a workpiece above a magnetic field generating device or a magnet, changing the strength of the magnetic field and the coverage of the magnetic field on the workpiece, spraying in a mixed gas electrostatic mode, adsorbing paint with negative electricity on the surface of the workpiece under the action of the magnetic field, ensuring that more paint is at the position with high magnetic field strength and less paint is at the position with low magnetic field strength, drying after one-time spraying is finished, releasing the electrostatic treatment by grounding before drying, changing the coverage of the magnetic field on the workpiece, changing the color of the paint, spraying again, and repeating the above processes until the workpiece is colored and sprayed;
sp 7: varnish spraying
And (3) spraying the surface of the workpiece in an air atomization mode to ensure that the thickness of the whole paint of the workpiece is consistent, drying, detaching the pre-covered sticker or adhesive tape after drying, and packaging the workpiece.
Preferably, in the Sp 5-7, the drying treatment is carried out in a hot air blowing mode, and the temperature of hot air is controlled to be 60-140 ℃.
(III) advantageous effects
The invention provides a spraying method for gradient color of a product. The method has the following beneficial effects:
1. according to the invention, the product is colored by adopting a magnetic field adsorption mode, and the color change effect of the product is achieved by the difference of the magnetic field intensity of the product and the difference of the paint aggregation amount, so that the use of the colored paint is reduced, and the cost is reduced.
2. According to the invention, the spraying of the varnish not only enables the product to have a transparent color, but also ensures the consistency of the paint spraying thickness of the product, and avoids the paint repair spraying.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the embodiment of the invention provides a product gradient spraying method, which comprises the following steps:
sp 1: internal stress relief
The internal stress of the metal substrate can be eliminated in an annealing mode if the metal substrate is a metal part, furnace cooling is adopted as a cooling mode, and the step of skipping is carried out if the selected metal substrate has no internal stress, so that the next operation is carried out;
sp 2: polishing treatment
Checking whether the workpiece has concave damage after being raised, if so, removing the raised part by using a cutter, if so, filling the workpiece by using a material which is consistent with the base material or has similar performance, polishing the workpiece by using 500-mesh abrasive paper for rough grinding, further polishing by using 1000-mesh abrasive paper, and if not, discarding;
sp 3: cleaning treatment
Placing the workpiece onWashing the workpiece on a cleaning frame in a clean water spraying mode, wherein the washing time is 10-15 min, soaking the workpiece in an ethanol solution when the workpiece is drained until no water drops, the ethanol can dissolve oil substances, so that oil stains on the surface of the workpiece can be conveniently removed, pumping air into the solution, the soaking time is 15-20 min, draining after soaking is finished, the pumped air can be used for removing the oil substances and impurities left in the spraying process, and CO in the air2The acid-base degree of the ethanol solution can be balanced, and the influence of PH on paint spraying is avoided;
sp 4: drying and plugging treatment
Placing the cleaned workpiece in a drying chamber, drying by blowing hot air at 100 deg.C, feeding into a dust-free workshop, and covering and filling the areas such as holes, edges and grooves with sticker or adhesive tape;
sp 5: primer spray
Spraying the surface of the workpiece in an air atomization mode to ensure uniform spraying, and drying;
sp 6: painting and spraying
Placing a workpiece above a magnetic field generating device or a magnet, changing the strength of the magnetic field and the coverage of the magnetic field on the workpiece, spraying in a mixed gas electrostatic mode, adsorbing paint with negative electricity on the surface of the workpiece under the action of the magnetic field, ensuring that more paint is at the position with high magnetic field strength and less paint is at the position with low magnetic field strength, drying after one-time spraying is finished, releasing the electrostatic treatment by grounding before drying, changing the coverage of the magnetic field on the workpiece, changing the color of the paint, spraying again, and repeating the above processes until the workpiece is colored and sprayed;
sp 7: varnish spraying
And (3) spraying the surface of the workpiece in an air atomization mode to ensure that the thickness of the whole paint of the workpiece is consistent, drying, detaching the pre-covered sticker or adhesive tape after drying, and packaging the workpiece. In the Sp 5-7, the drying treatment is carried out in a hot air blowing mode, and the temperature of hot air is controlled to be 120 ℃.
Example two:
a method of gradient color spraying of a product, comprising the steps of:
sp 1: internal stress relief
If the base material is made of plastic, heating treatment can be carried out according to the specific material of the plastic, the temperature is controlled to be 30-80 ℃, the temperature duration is 30min, and the selected base material has no internal stress, and then the next step is carried out;
sp 2: polishing treatment
Checking whether the workpiece has concave damage after being raised, if so, removing the raised part by using a cutter, if so, filling the workpiece by using a material which is consistent with the base material or has similar performance, polishing the workpiece by using 500-mesh abrasive paper for rough grinding, further polishing by using 1000-mesh abrasive paper, and if not, discarding;
sp 3: cleaning treatment
Placing a workpiece on a cleaning frame, washing the workpiece in a clear water spraying mode for 10-15 min, soaking the workpiece in an ethanol solution when the workpiece is drained until no water drops, wherein the ethanol can dissolve oil substances, so that the surface oil stains of the workpiece can be conveniently removed, pumping air into the solution for 15-20 min, draining the workpiece after soaking is finished, and pumping the air into the solution can remove the oil substances and impurities left in the spraying process and CO in the air2The acid-base degree of the ethanol solution can be balanced, and the influence of PH on paint spraying is avoided;
sp 4: drying and plugging treatment
Placing the cleaned workpiece in a drying chamber, drying by blowing hot air at 50 deg.C, and feeding into a dust-free workshop, and covering and filling the areas such as hole, edge and groove with sticker or adhesive tape;
sp 5: primer spray
Spraying the surface of the workpiece in an air atomization mode to ensure uniform spraying, and drying;
sp 6: painting and spraying
Placing a workpiece above a magnetic field generating device or a magnet, changing the strength of the magnetic field and the coverage of the magnetic field on the workpiece, spraying in a mixed gas electrostatic mode, adsorbing paint with negative electricity on the surface of the workpiece under the action of the magnetic field, ensuring that more paint is at the position with high magnetic field strength and less paint is at the position with low magnetic field strength, drying after one-time spraying is finished, releasing the electrostatic treatment by grounding before drying, changing the coverage of the magnetic field on the workpiece, changing the color of the paint, spraying again, and repeating the above processes until the workpiece is colored and sprayed;
sp 7: varnish spraying
And (3) spraying the surface of the workpiece in an air atomization mode to ensure that the thickness of the whole paint of the workpiece is consistent, drying, detaching the pre-covered sticker or adhesive tape after drying, and packaging the workpiece.
In the Sp 5-7, the drying treatment is carried out in a hot air blowing mode, and the temperature of hot air is controlled at 60 ℃.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A method for spraying a product with gradually changed colors is characterized by comprising the following steps: the method comprises the following steps:
sp 1: internal stress relief
If the selected base material needs to eliminate the internal stress, the selected base material is processed respectively according to the property of the workpiece, if the base material is a metal piece, the internal stress can be eliminated in an annealing mode, the cooling mode is furnace cooling, if the base material is a plastic material, the base material can be heated according to the concrete material of the plastic, the temperature is controlled to be 30-80 ℃, the temperature duration is 30min, and if the selected base material has no internal stress, the step is skipped, and the next operation is carried out;
sp 2: polishing treatment
Checking whether the workpiece has concave damage after being raised, if so, removing the raised part by using a cutter, if so, filling the workpiece by using a material which is consistent with the base material or has similar performance, polishing the workpiece by using 500-mesh abrasive paper for rough grinding, further polishing by using 1000-mesh abrasive paper, and if not, discarding;
sp 3: cleaning treatment
Placing the workpiece on a cleaning frame, washing the workpiece in a clean water spraying mode for 10-15 min, soaking the workpiece in an ethanol solution when the workpiece is drained until no water drips, pumping air into the solution for 15-20 min, and draining after the soaking is finished;
sp 4: drying and plugging treatment
Placing the cleaned workpiece in a drying chamber, drying by using a hot air blowing mode, controlling the temperature of hot air at 50-120 ℃, sending the workpiece into a dust-free workshop after drying, and covering and filling areas such as holes, edges and grooves on the workpiece, which do not need paint spraying, with stickers or adhesive tapes; sp 5: primer spray
Spraying the surface of the workpiece in an air atomization mode to ensure uniform spraying, and drying; sp 6: painting and spraying
Placing a workpiece above a magnetic field generating device or a magnet, changing the strength of the magnetic field and the coverage of the magnetic field on the workpiece, spraying in a mixed gas electrostatic mode, adsorbing paint with negative electricity on the surface of the workpiece under the action of the magnetic field, ensuring that more paint is at the position with high magnetic field strength and less paint is at the position with low magnetic field strength, drying after one-time spraying is finished, releasing the electrostatic treatment by grounding before drying, changing the coverage of the magnetic field on the workpiece, changing the color of the paint, spraying again, and repeating the processes until the workpiece is colored and sprayed;
sp 7: varnish spraying
And spraying the surface of the workpiece in an air atomization mode to ensure that the thickness of the whole paint of the workpiece is consistent, drying, detaching the pre-covered sticker or adhesive tape after drying, and packaging the workpiece.
2. The method of claim 1, wherein the spraying step comprises: in the Sp 5-7, a hot air blowing mode is used for drying treatment, and the temperature of hot air is controlled to be 60-140 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010050901.7A CN111229568A (en) | 2020-01-17 | 2020-01-17 | Product gradient color spraying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010050901.7A CN111229568A (en) | 2020-01-17 | 2020-01-17 | Product gradient color spraying method |
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| Publication Number | Publication Date |
|---|---|
| CN111229568A true CN111229568A (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010050901.7A Pending CN111229568A (en) | 2020-01-17 | 2020-01-17 | Product gradient color spraying method |
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| CN (1) | CN111229568A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113000334A (en) * | 2021-03-02 | 2021-06-22 | 西安万祥新材料有限公司 | Spraying process of ultra-thick film electrostatic coating |
| CN116475041A (en) * | 2023-02-17 | 2023-07-25 | 日照山太飞机工程股份有限公司 | Airplane gradual-change color spraying method |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113000334A (en) * | 2021-03-02 | 2021-06-22 | 西安万祥新材料有限公司 | Spraying process of ultra-thick film electrostatic coating |
| CN116475041A (en) * | 2023-02-17 | 2023-07-25 | 日照山太飞机工程股份有限公司 | Airplane gradual-change color spraying method |
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Application publication date: 20200605 |