CN110616450B - Surface protection method for aluminum alloy glued joint antenna reflecting surface panel - Google Patents
Surface protection method for aluminum alloy glued joint antenna reflecting surface panel Download PDFInfo
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- CN110616450B CN110616450B CN201910842677.2A CN201910842677A CN110616450B CN 110616450 B CN110616450 B CN 110616450B CN 201910842677 A CN201910842677 A CN 201910842677A CN 110616450 B CN110616450 B CN 110616450B
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- reflecting surface
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/16—Pretreatment, e.g. desmutting
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/26—Anodisation of refractory metals or alloys based thereon
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Abstract
The invention relates to the technical field of antenna reflecting surface protection in the field of radar antenna manufacturing engineering, in particular to a surface protection method suitable for a high-precision aluminum alloy glued joint antenna reflecting surface. The invention relates to a surface protection method of an aluminum alloy adhesive joint antenna reflecting surface panel, which comprises the following steps: s1: machining and molding parts such as aluminum alloy skin, ribs, corner pieces and the like; s2: polishing the adhesive surfaces of all aluminum alloy parts by using abrasive paper, and wiping the adhesive surfaces by using a solvent; s3: adhering and assembling all parts on a special adhesive tool by using an adhesive to form an antenna reflecting surface panel; s4: trial assembly of the antenna reflecting surface panel; s5: anodizing the reflecting surface panel, and washing residual oxidizing solution by using purified water; s6: and coating primer and finish paint on the surface of the reflecting surface panel. The invention avoids oil contamination and dirt pollution and ensures the protection quality and the appearance of the reflecting surface panel.
Description
Technical Field
The invention relates to the technical field of antenna reflecting surface protection in the field of radar antenna manufacturing engineering, in particular to a surface protection method suitable for a high-precision aluminum alloy glued joint antenna reflecting surface.
Background
With the development of satellite communication and deep space exploration technologies, the working frequency of the antenna is higher and higher, the aluminum alloy glued joint antenna reflecting surface panel becomes the main structural form of a large and medium-sized antenna reflecting surface panel, and the aluminum alloy glued joint antenna reflecting surface panel has the advantages of high precision, good stability and low cost.
The conventional surface protection process flow adopted by gluing the antenna reflector panel is shown in fig. 5.
The traditional surface protection process route has the problems of complicated procedures and many pollution sources, such as: the glue joint surface of the glue joint part must be kept clean after the oxidation, the glue joint performance is ensured to be stable, glue joint parts such as ribs, skins, corner pieces and the like must protect the glue joint surface before primer coating, the workload of surface protection is increased, and meanwhile, an oxide film is easily polluted; on the other hand, in the panel trial assembly stage, the pollution of oil stains and dirt cannot be avoided, the panel is difficult to clean and is not favorable for the adhesion of finish paint, and the anti-corrosion performance of the reflecting surface panel is influenced.
Disclosure of Invention
The invention aims to solve the problems of surface protection of the traditional glued antenna reflecting surface panel and provides a surface protection method which is simple and feasible in process and reliable in protection quality. The reflecting surface panel protection method realized by the invention is beneficial to improving the adhesive force of paint, reducing the workload, reducing the cost, eliminating a plurality of hidden quality troubles of protection, and achieving multiple purposes with half the effort. The technical scheme adopted by the invention is as follows:
a surface protection method for an aluminum alloy glued joint antenna reflecting surface panel comprises the following steps:
s1: machining and molding parts such as aluminum alloy skin, ribs, corner pieces and the like;
s2: polishing the adhesive surfaces of all aluminum alloy parts by using abrasive paper, and wiping the adhesive surfaces by using a solvent;
s3: adhering and assembling all parts on a special adhesive tool by using an adhesive to form an antenna reflecting surface panel;
s4: trial assembly of the antenna reflecting surface panel;
s5: anodizing the reflecting surface panel, and washing residual oxidizing solution by using purified water;
s6: and coating primer and finish paint on the surface of the reflecting surface panel.
Further, the adhesive used in step S3 is an acrylic structural adhesive, and the adhesive covers all the bonded surfaces to form an adhesive layer, and the parts are insulated from each other.
Further, step S5 the anodic oxidation treatment, the reflecting surface panel need to be clamped on the whole oxidation tool, the oxidation tool is made of titanium alloy or aluminum alloy, the structure is designed according to the appearance of the reflecting surface panel, and the oxidizing tool is assembled after machining, so that all aluminum alloy parts of the glued reflecting surface panel can be electrically conducted.
Further, the anodic oxidation pretreatment in step S5 includes degreasing, water washing, alkaline washing, water washing, acid washing, and water washing, wherein the concentration of the degreasing agent solution is 50-80 g/L; the concentration of the alkaline washing liquid is 40-60g/L, the temperature of the alkaline washing liquid is less than or equal to 50 ℃, and the time is less than or equal to 2 min; the concentration of the pickling solution is 300-500g/L, and the time is less than or equal to 5 min; the washing solution is pure water.
Further, in the anodic oxidation treatment in step S5, the thickness of the oxide film is greater than or equal to 8 μm.
Further, a step of drying the reflective surface panel is included between the step S5 and the step S6 to remove surface moisture, wherein the drying temperature is less than or equal to 50 ℃.
Further, the effective coating time interval is separated between the step S5 and the step S6, the time is less than 24h, and the coating of the primer coating on the surface of the reflecting surface panel is completed within 24h after the step S5.
Compared with the prior art, the invention has the following advantages:
1. all parts do not need to be chemically degreased before the reflecting surface panel is glued, the primary coating is not needed to be added, only the sand paper is used for polishing, the work of protecting the gluing surface is saved, primer is not needed to be coated before the surface paint is sprayed, the panel is not needed to be cleaned, and the work efficiency is greatly improved.
2. The reflecting surface panel is subjected to integral oxidation surface treatment after being formed, the thickness of the oxide film is uniform, the surface of the panel is coated with primer and finish paint within effective time, and the adhesive force of the paint film is improved.
3. According to the process method, oil contamination and dirt pollution are avoided, and the protection quality and the appearance of the reflecting surface panel are ensured.
Drawings
FIG. 1 is a flow chart of the surface protection process of the reflecting surface panel of the aluminum alloy glued joint antenna of the present invention;
FIG. 2 is a schematic view of a panel structure of an aluminum alloy bonded reflective surface;
FIG. 3 is a view of a reflector panel and integral oxidation tooling assembly;
FIG. 4 is a partial view of a reflector panel and a bulk oxidation tool.
FIG. 5 is a flow chart of a conventional surface protection process for a glued antenna reflector panel
Description of the reference numerals
The device comprises a reflecting surface panel skin 1, reflecting surface panel ribs 2, reflecting surface panel corner pieces 3, a reflecting surface panel 4, an anodic oxidation anode beam 5, a whole oxidation tool connecting rod 6, a whole oxidation tool elastic sheet 7, a whole oxidation tool annular rib conduction plate 8, a flexible lead 9 and a whole oxidation tool conduction elastic sheet 10.
Detailed Description
As shown in fig. 1-4, the glued antenna reflector panel in this embodiment is a 13-meter aperture antenna sector reflector panel.
A surface protection method for an aluminum alloy glued joint antenna reflecting surface panel is characterized in that parts such as an aluminum alloy skin 1, ribs 2 and a corner piece 3 are glued joint to form a reflecting surface panel 4, the panel is subjected to integral anodic oxidation, and then primer and finish paint are coated to finish the surface protection work of the panel, and the method specifically comprises the following steps:
s1: the parts such as the aluminum alloy skin 1, the ribs 2, the corner pieces 3 and the like are formed by machining;
s2: polishing the adhesive surfaces of all aluminum alloy parts by using No. 120 abrasive paper, and wiping the adhesive surfaces by using an alcohol solvent;
s3: adhering and assembling all parts on a special adhesive tool by using an acrylic acid structural adhesive to form an antenna reflecting surface panel 4;
s4: trial assembly of the antenna reflector panel 4;
s5: anodic oxidation treatment of the reflecting surface panel:
s5-1: clamping the reflecting surface panel 4 on the integral oxidation tool, and fixing the panel 4 through an oxidation tool elastic sheet 7;
s5-2: is connected with an anodic oxidation anode beam 5 through a connecting rod 6;
s5-3: the annular rib conduction plate 8 is connected to the annular rib of the panel, fixed through the conduction elastic sheet 10 and connected with the annular conduction plate 8 through the flexible lead 9;
s5-4: the panel ribs 2 and the corner pieces 3 are connected by means of conductive clips 10.
S5-5: carrying out anodic oxidation treatment: degreasing, water washing, alkali washing, water washing, acid washing, water washing, oxidation and water washing, wherein the concentration of the liquid medicine of the degreasing agent is 60 g/L; the concentration of the alkaline washing liquid is 50g/L, the temperature of the alkaline washing liquid is 50 ℃, and the time is 2 min; the concentration of the pickling solution is 500g/L, and the time is 5 min; the concentration of the oxidizing solution is 160g/L, and the time is 50 min; the washing solution is pure water, and the pH value is 7; the thickness of the oxide film was measured by a thickness gauge to be 10 μm.
S6: and removing surface water vapor of the reflecting surface panel at the temperature of 45 ℃, coating an epoxy primer in 24 hours after oxidation, and coating a polyurethane finish after the primer is cured.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all 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.
Claims (8)
1. A surface protection method for an aluminum alloy glued joint antenna reflecting surface panel is characterized by comprising the following steps:
s1: machining and molding the aluminum alloy part;
s2: polishing the adhesive surfaces of all aluminum alloy parts by using abrasive paper, and wiping the adhesive surfaces by using a solvent;
s3: adhering and assembling all parts on a special adhering mold by using an adhesive to form an antenna reflecting surface panel; the adhesive is an acrylic structural adhesive;
s4: trial assembly of the antenna reflecting surface panel;
s5: anodizing the reflecting surface panel, and washing residual oxidizing solution by using purified water; in the anodic oxidation treatment process, all aluminum alloy parts of the glued joint reflecting surface panel are electrically conducted;
s6: and coating primer and finish paint on the surface of the reflecting surface panel.
2. The surface protection method for the aluminum alloy glued joint antenna reflecting surface panel as claimed in claim 1, characterized in that: and adhesive layers are filled among parts of the antenna reflecting surface panel, and the adhesive covers all the adhesive surfaces.
3. The surface protection method for the aluminum alloy glued joint antenna reflecting surface panel as claimed in claim 1, characterized in that: and S5, performing anodic oxidation treatment, wherein the reflecting surface panel needs to be clamped on an integral oxidation tool, the oxidation tool is made of titanium alloy or aluminum alloy, the structure is designed according to the appearance of the reflecting surface panel, and the oxidizing tool is assembled after machining.
4. The surface protection method for the aluminum alloy glued joint antenna reflecting surface panel as claimed in claim 1, characterized in that: the anodic oxidation treatment of step S5 includes the steps of: degreasing, water washing, alkali washing, water washing, acid washing, water washing, oxidation and water washing, wherein the concentration of the liquid medicine of the degreasing agent is 50-80 g/L; the concentration of the alkaline washing liquid is 40-60g/L, the temperature of the alkaline washing liquid is less than or equal to 50 ℃, and the time is less than or equal to 2 min; the concentration of the pickling solution is 300-500g/L, and the time is less than or equal to 5 min; the concentration of the oxidizing solution is 150-200g/L, and the water washing solution is pure water.
5. The surface protection method for the aluminum alloy glued joint antenna reflecting surface panel as claimed in claim 1, characterized in that: in the step S5, the thickness of the oxide film is not less than 8 microns.
6. The surface protection method for the aluminum alloy glued joint antenna reflecting surface panel as claimed in claim 1, characterized in that: and a step of drying the reflecting surface panel between the step S5 and the step S6 to remove surface moisture, wherein the drying temperature is less than or equal to 50 ℃.
7. The surface protection method for the aluminum alloy glued joint antenna reflecting surface panel as claimed in claim 1, characterized in that: and an effective coating time section is arranged between the step S5 and the step S6, the time is less than 24h, and the coating of the primer coating on the surface of the reflecting surface panel is completed within 24h after the step S5.
8. The surface protection method for the aluminum alloy glued joint antenna reflecting surface panel as claimed in claim 1, characterized in that: the outline of the glued antenna reflecting surface panel is in a sector shape, a circular shape or a triangular shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910842677.2A CN110616450B (en) | 2019-09-06 | 2019-09-06 | Surface protection method for aluminum alloy glued joint antenna reflecting surface panel |
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| CN201910842677.2A CN110616450B (en) | 2019-09-06 | 2019-09-06 | Surface protection method for aluminum alloy glued joint antenna reflecting surface panel |
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| CN110616450A CN110616450A (en) | 2019-12-27 |
| CN110616450B true CN110616450B (en) | 2021-06-08 |
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| CN114262885B (en) * | 2021-11-17 | 2023-06-02 | 中国电子科技集团公司第三十八研究所 | Preparation method of ultralow-emissivity functional coating |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106544674A (en) * | 2016-10-25 | 2017-03-29 | 苏州胜利精密制造科技股份有限公司 | The process of surface treatment that a kind of magnesium die casting workpiece and aluminum component are combined |
| CN108393246A (en) * | 2018-04-12 | 2018-08-14 | 余中华 | A kind of technique that stamping forming metal blank is surface-treated |
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- 2019-09-06 CN CN201910842677.2A patent/CN110616450B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106544674A (en) * | 2016-10-25 | 2017-03-29 | 苏州胜利精密制造科技股份有限公司 | The process of surface treatment that a kind of magnesium die casting workpiece and aluminum component are combined |
| CN108393246A (en) * | 2018-04-12 | 2018-08-14 | 余中华 | A kind of technique that stamping forming metal blank is surface-treated |
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| CN110616450A (en) | 2019-12-27 |
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