CN110813681A - Spraying method of aluminum alloy door and window - Google Patents
Spraying method of aluminum alloy door and window Download PDFInfo
- Publication number
- CN110813681A CN110813681A CN201911262475.7A CN201911262475A CN110813681A CN 110813681 A CN110813681 A CN 110813681A CN 201911262475 A CN201911262475 A CN 201911262475A CN 110813681 A CN110813681 A CN 110813681A
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- CN
- China
- Prior art keywords
- aluminum profile
- degreasing
- treatment
- aluminum alloy
- deoiling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B05D7/14—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
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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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
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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
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/16—Polishing
- C25F3/18—Polishing of light metals
- C25F3/20—Polishing of light metals of aluminium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention belongs to the technical field of spraying of aluminum alloy doors and windows, and particularly discloses a spraying method of aluminum alloy doors and windows, which comprises the steps of pretreatment, degreasing, deoiling, neutralization, electrochemical polishing, anodic oxidation, spraying and curing.
Description
Technical Field
The invention relates to the related field of aluminum alloy doors and windows, in particular to a spraying method of aluminum alloy doors and windows.
Background
The aluminum alloy is an alloy which is composed of aluminum as a matrix element and one or more alloy elements. Aluminum alloys are the most widely used class of non-ferrous structural materials in industry and have found a number of applications in the aerospace, automotive, mechanical manufacturing, marine and chemical industries. Particularly, along with the fire heat expansion of the real estate industry, the aluminum alloy section becomes an important exterior wall interior earth enclosure representation form in the current building, and a new concept of the modern building is reflected.
Most of the existing aluminum alloy surface work treatment before aluminum alloy spraying is not in place, fine pits or cracks exist on the aluminum alloy surface basically, the surface of the aluminum alloy after passivation treatment is uneven, and finally the spraying effect is not ideal.
Disclosure of Invention
The invention aims to provide a spraying method of an aluminum alloy door and window, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a spraying method of an aluminum alloy door and window comprises the following steps:
s1, preprocessing: carrying out mechanical polishing treatment on the surface of the aluminum alloy profile, and taking out air bubbles, galling, indentation, bending and other defects on the surface of the aluminum profile;
s2, degreasing: putting the pretreated aluminum profile into degreasing liquid for degreasing treatment, and flushing with clear water after degreasing;
s3, oil removal: putting the aluminum profile into deoiling liquid for deoiling treatment, and washing with clear water after deoiling;
s4, neutralization: putting the washed aluminum profile into a neutralizing solution for neutralization treatment, and washing the aluminum profile with clear water after neutralization;
s5, electrochemical polishing: carrying out secondary polishing treatment on the aluminum profile by adopting electrochemical polishing, and washing with clear water after the treatment;
s6, anodic oxidation: carrying out anodic oxidation treatment on the aluminum profile after electrochemical polishing to form a hard oxide film on the surface of the aluminum profile, and washing the aluminum profile with deionized water after washing with clear water;
s7, spraying: feeding the aluminum profile into an electrostatic spraying machine, and spraying a powder coating on a hard oxide film of the aluminum profile by adopting an electrostatic spraying process, wherein the thickness of the powder coating is 0.06-0.08 mm;
s8, curing: and (4) conveying the sprayed aluminum profile into an oven for curing, and naturally cooling after curing.
Preferably, the degreasing solution comprises 80g/L of sodium citrate and 200g/L of phosphoric acid, the degreasing temperature is 40-50 ℃, and the degreasing time is 30 min.
Preferably, the deoiling liquid comprises 8-10g/L of sodium hydroxide and 6-9g/L of sodium carbonate, the deoiling temperature is 40-50 ℃, and the deoiling time is 30 min.
Preferably, the neutralizing solution comprises 250g/L nitric acid and is neutralized for 1-3 minutes at normal temperature.
Preferably, the oven temperature is 160-180 ℃, and the curing time is 3-5 min.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a spraying method of an aluminum alloy door and window, which can effectively remove burrs, pits and other defects on the surface of an aluminum alloy by carrying out mechanical polishing and electrochemical polishing on the aluminum alloy section, and ensure the smoothness and the flatness of the surface of the aluminum alloy section, thereby ensuring that an oxide film formed after anodic oxidation of the aluminum alloy section has excellent wear resistance and corrosion resistance, and simultaneously has excellent adsorption performance, is convenient for adsorption of paint, improves the spraying quality and efficiency, and has strong practicability.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present 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.
Example 1: a spraying method of an aluminum alloy door and window comprises the following steps:
s1, preprocessing: carrying out mechanical polishing treatment on the surface of the aluminum alloy profile, and taking out air bubbles, galling, indentation, bending and other defects on the surface of the aluminum profile;
s2, degreasing: putting the pretreated aluminum profile into degreasing liquid for degreasing treatment, and flushing with clear water after degreasing;
s3, oil removal: putting the aluminum profile into deoiling liquid for deoiling treatment, and washing with clear water after deoiling;
s4, neutralization: putting the washed aluminum profile into a neutralizing solution for neutralization treatment, and washing the aluminum profile with clear water after neutralization;
s5, electrochemical polishing: carrying out secondary polishing treatment on the aluminum profile by adopting electrochemical polishing, and washing with clear water after the treatment;
s6, anodic oxidation: carrying out anodic oxidation treatment on the aluminum profile after electrochemical polishing to form a hard oxide film on the surface of the aluminum profile, and washing the aluminum profile with deionized water after washing with clear water;
s7, spraying: feeding the aluminum profile into an electrostatic spraying machine, and spraying powder coating on a hard oxide film of the aluminum profile by adopting an electrostatic spraying process, wherein the thickness of the powder coating is 0.06 mm;
s8, curing: and (4) conveying the sprayed aluminum profile into an oven for curing, and naturally cooling after curing.
Further, the degreasing solution comprises 80g/L of sodium citrate and 200g/L of phosphoric acid, the degreasing temperature is 40 ℃, and the degreasing time is 30 min.
Further, the deoiling liquid comprises 8g/L of sodium hydroxide and 6g/L of sodium carbonate, the deoiling temperature is 40 ℃, and the deoiling time is 30 min.
Further, the neutralization solution comprises 250g/L nitric acid and is neutralized for 1 minute at normal temperature.
Further, the oven temperature is 160 ℃, and the curing time is 3 min.
Example 2: a spraying method of an aluminum alloy door and window comprises the following steps:
s1, preprocessing: carrying out mechanical polishing treatment on the surface of the aluminum alloy profile, and taking out air bubbles, galling, indentation, bending and other defects on the surface of the aluminum profile;
s2, degreasing: putting the pretreated aluminum profile into degreasing liquid for degreasing treatment, and flushing with clear water after degreasing;
s3, oil removal: putting the aluminum profile into deoiling liquid for deoiling treatment, and washing with clear water after deoiling;
s4, neutralization: putting the washed aluminum profile into a neutralizing solution for neutralization treatment, and washing the aluminum profile with clear water after neutralization;
s5, electrochemical polishing: carrying out secondary polishing treatment on the aluminum profile by adopting electrochemical polishing, and washing with clear water after the treatment;
s6, anodic oxidation: carrying out anodic oxidation treatment on the aluminum profile after electrochemical polishing to form a hard oxide film on the surface of the aluminum profile, and washing the aluminum profile with deionized water after washing with clear water;
s7, spraying: feeding the aluminum profile into an electrostatic spraying machine, and spraying powder coating on a hard oxide film of the aluminum profile by adopting an electrostatic spraying process, wherein the thickness of the powder coating is 0.08 mm;
s8, curing: and (4) conveying the sprayed aluminum profile into an oven for curing, and naturally cooling after curing.
Further, the degreasing solution comprises 80g/L of sodium citrate and 200g/L of phosphoric acid, the degreasing temperature is 50 ℃, and the degreasing time is 30 min.
Further, the deoiling liquid comprises 8-10g/L of sodium hydroxide and 6-9g/L of sodium carbonate, the deoiling temperature is 50 ℃, and the deoiling time is 30 min.
Further, the neutralization solution comprises 250g/L nitric acid and is neutralized for 3 minutes at normal temperature.
Further, the oven temperature is 180 ℃, and the curing time is 5 min.
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 (5)
1. The spraying method of the aluminum alloy door and window is characterized by comprising the following steps: the method comprises the following steps:
s1, preprocessing: carrying out mechanical polishing treatment on the surface of the aluminum alloy profile, and taking out air bubbles, galling, indentation, bending and other defects on the surface of the aluminum profile;
s2, degreasing: putting the pretreated aluminum profile into degreasing liquid for degreasing treatment, and flushing with clear water after degreasing;
s3, oil removal: putting the aluminum profile into deoiling liquid for deoiling treatment, and washing with clear water after deoiling;
s4, neutralization: putting the washed aluminum profile into a neutralizing solution for neutralization treatment, and washing the aluminum profile with clear water after neutralization;
s5, electrochemical polishing: carrying out secondary polishing treatment on the aluminum profile by adopting electrochemical polishing, and washing with clear water after the treatment;
s6, anodic oxidation: carrying out anodic oxidation treatment on the aluminum profile after electrochemical polishing to form a hard oxide film on the surface of the aluminum profile, and washing the aluminum profile with deionized water after washing with clear water;
s7, spraying: feeding the aluminum profile into an electrostatic spraying machine, and spraying a powder coating on a hard oxide film of the aluminum profile by adopting an electrostatic spraying process, wherein the thickness of the powder coating is 0.06-0.08 mm;
s8, curing: and (4) conveying the sprayed aluminum profile into an oven for curing, and naturally cooling after curing.
2. The spraying method of the aluminum alloy door and window according to claim 1, characterized in that: the degreasing fluid comprises 80g/L of sodium citrate and 200g/L of phosphoric acid, the degreasing temperature is 40-50 ℃, and the degreasing time is 30 min.
3. The spraying method of the aluminum alloy door and window according to claim 1, characterized in that: the deoiling liquid comprises 8-10g/L of sodium hydroxide and 6-9g/L of sodium carbonate, the deoiling temperature is 40-50 ℃, and the deoiling time is 30 min.
4. The spraying method of the aluminum alloy door and window according to claim 1, characterized in that: the neutralization solution comprises 250g/L nitric acid and is neutralized for 1-3 minutes at normal temperature.
5. The spraying method of the aluminum alloy door and window according to claim 1, characterized in that: the oven temperature is 160-180 ℃, and the curing time is 3-5 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911262475.7A CN110813681A (en) | 2019-12-10 | 2019-12-10 | Spraying method of aluminum alloy door and window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911262475.7A CN110813681A (en) | 2019-12-10 | 2019-12-10 | Spraying method of aluminum alloy door and window |
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| Publication Number | Publication Date |
|---|---|
| CN110813681A true CN110813681A (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201911262475.7A Pending CN110813681A (en) | 2019-12-10 | 2019-12-10 | Spraying method of aluminum alloy door and window |
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| Country | Link |
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| CN (1) | CN110813681A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111560549A (en) * | 2020-05-18 | 2020-08-21 | 新沂天源节能材料有限公司 | High-strength wear-resistant aluminum alloy door and window and manufacturing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105457874A (en) * | 2015-12-10 | 2016-04-06 | 太仓贝斯特机械设备有限公司 | Electrostatic powder spraying method of aluminum material building door and window |
-
2019
- 2019-12-10 CN CN201911262475.7A patent/CN110813681A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105457874A (en) * | 2015-12-10 | 2016-04-06 | 太仓贝斯特机械设备有限公司 | Electrostatic powder spraying method of aluminum material building door and window |
Non-Patent Citations (3)
| Title |
|---|
| 钱军浩: "《特种印刷新技术》", 28 February 2010, 中国轻工业出版社 * |
| 高岩: "《工业设计材料与表面处理》", 31 August 2005, 国防工业出版社 * |
| 黄红军等: "《金属表面处理与防护技术》", 31 October 2011, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111560549A (en) * | 2020-05-18 | 2020-08-21 | 新沂天源节能材料有限公司 | High-strength wear-resistant aluminum alloy door and window and manufacturing method thereof |
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Application publication date: 20200221 |
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| RJ01 | Rejection of invention patent application after publication |