CN113186578A - Pretreatment process for aluminum anodic oxidation and aluminum anodic oxidation polishing method - Google Patents
Pretreatment process for aluminum anodic oxidation and aluminum anodic oxidation polishing method Download PDFInfo
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- CN113186578A CN113186578A CN202110283384.2A CN202110283384A CN113186578A CN 113186578 A CN113186578 A CN 113186578A CN 202110283384 A CN202110283384 A CN 202110283384A CN 113186578 A CN113186578 A CN 113186578A
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- aluminum
- aluminum material
- pretreatment process
- polishing
- anodic oxidation
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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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
- C23F3/02—Light metals
- C23F3/03—Light metals with acidic solutions
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- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
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- Mechanical Engineering (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The invention provides a pretreatment process for anodic oxidation of aluminum material, which comprises the following steps: immersing the aluminum material in an aluminum material polishing solution, and performing chemical polishing at the temperature of 95-110 ℃, wherein the chemical polishing time is 60-80 s; the aluminum material polishing solution comprises 1000-1200 g/L of phosphoric acid, 480-550 g/L of sulfuric acid, 0.18-0.22 g/L of copper sulfate, 0.38-0.45 g/L of nickel sulfate, 0.043-0.058 g/L of silver nitrate, 0.45-0.63 g/L of potassium hydrogen peroxydisulfate, 0.3-0.5 g/L of ammonium molybdate, 0.1-0.3 g/L of hexadecylamine and water serving as a solvent, and does not contain nitric acid; the aluminum material polishing solution is also added with aluminum ions, and the concentration of the aluminum ions is 10-20 g/L. The pretreatment process for anodizing the aluminum material reduces the pitting degree of the aluminum material treated by the pretreatment process for anodizing, thereby improving the surface gloss of the aluminum material, reducing the weight loss rate and ensuring the polishing quality.
Description
Technical Field
The invention relates to the field of aluminum product anodic oxidation surface treatment, in particular to a pretreatment process for aluminum product anodic oxidation and an aluminum product anodic oxidation polishing method.
Background
In recent years, with the development of science and technology, people have more and more strict requirements on products, and higher requirements are put forward on plane processing technology with extremely high precision and nearly no defects of materials. Aluminum, as an excellent industrial material, is widely used in various industries of industry, and therefore, a higher demand is placed on the surface finish type.
Anodic oxidation is a universal surface treatment technology for aluminum and is the most widely applied protection method in industry at present. To obtain a higher standard bright anodized film, a high standard process is required, wherein the polishing technique can well meet the requirements of aluminum anodized surface pretreatment.
The chemical polishing technology is chemical corrosion of metal under specific conditions, namely, a series of chemical reactions of metal materials occur in polishing solution consisting of corrosive, oxidant, additive and the like with reasonable proportion, so that the metal becomes flat and bright.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a pretreatment process for aluminum anodic oxidation and an aluminum anodic oxidation polishing method.
In order to achieve the purpose, the invention adopts the technical scheme that: a pretreatment process for anodic oxidation of aluminum materials, comprising the following steps: immersing the aluminum material in an aluminum material polishing solution, and performing chemical polishing at the temperature of 95-110 ℃, wherein the chemical polishing time is 60-80 s;
the aluminum material polishing solution comprises 1000-1200 g/L of phosphoric acid, 480-550 g/L of sulfuric acid, 0.18-0.22 g/L of copper sulfate, 0.38-0.45 g/L of nickel sulfate, 0.043-0.058 g/L of silver nitrate, 0.45-0.63 g/L of potassium hydrogen peroxydisulfate, 0.3-0.5 g/L of ammonium molybdate, 0.1-0.3 g/L of hexadecylamine and water serving as a solvent, and does not contain nitric acid; the aluminum material polishing solution is also added with aluminum ions, and the concentration of the aluminum ions is 10-20 g/L.
The inventor selects the component collocation of the aluminum polishing solution, controls the concentration of aluminum ions in the polishing solution by controlling the temperature of the chemical polishing process, reduces the pitting degree of the aluminum material treated by the pretreatment process of anodic oxidation, further improves the surface gloss of the aluminum material, reduces the weight loss rate and ensures the polishing quality.
Preferably, the temperature of the chemical polishing is 100-105 ℃.
The inventor finds that when the chemical polishing temperature is 100-105 ℃, the surface gloss of the aluminum material is improved, and the weight loss rate is reduced.
Preferably, the chemical polishing time is 65-75 s.
Preferably, the concentration of aluminum ions in the aluminum material polishing solution is 12-18 g/L.
Preferably, the concentration of aluminum ions in the aluminum material polishing solution is 15-18 g/L.
The inventor finds that when the concentration of aluminum ions in the material polishing solution is 15-18 g/L, the surface gloss of the aluminum material is improved, and the weight loss rate is reduced.
The invention also provides an aluminum material anodic oxidation polishing method, which comprises the following steps:
(1) carrying out a pretreatment process for anodizing any one of the materials;
(2) and (3) carrying out anodic oxidation on the aluminum material treated in the step (1).
The invention has the beneficial effects that: the pretreatment process for anodizing the aluminum material reduces the pitting degree of the aluminum material treated by the pretreatment process for anodizing, further improves the surface gloss of the aluminum material, reduces the weight loss rate and ensures the polishing quality.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific examples.
Example 1
The pretreatment process for anodic oxidation of the aluminum material, which is an embodiment of the invention, comprises the following steps: immersing the aluminum material in an aluminum material polishing solution, and carrying out chemical polishing at the temperature of 100 ℃, wherein the chemical polishing time is 70 s;
the aluminum material polishing solution comprises the following components of 1000g/L phosphoric acid, 480g/L sulfuric acid, 0.18g/L copper sulfate, 0.38g/L nickel sulfate, 0.043g/L silver nitrate, 0.45g/L potassium hydrogen persulfate, 0.3g/L ammonium molybdate, 0.1g/L hexadecylamine and water serving as a solvent, and does not contain nitric acid; the aluminum material polishing solution is also added with aluminum ions (added in the form of aluminum sulfate) and the concentration of the aluminum ions is 15 g/L.
Example 2
As a pretreatment process for anodic oxidation of aluminum material in the embodiment of the present invention, the only difference between the embodiment and the embodiment 1 is: the temperature of the chemical polishing was 95 ℃.
Example 3
As a pretreatment process for anodic oxidation of aluminum material in the embodiment of the present invention, the only difference between the embodiment and the embodiment 1 is: the temperature of the chemical polishing was 105 ℃.
Example 4
As a pretreatment process for anodic oxidation of aluminum material in the embodiment of the present invention, the only difference between the embodiment and the embodiment 1 is: the temperature of the chemical polishing was 110 ℃.
Example 5
As a pretreatment process for anodic oxidation of aluminum material in the embodiment of the present invention, the only difference between the embodiment and the embodiment 1 is: the concentration of aluminum ions in the aluminum material polishing solution is 10 g/L.
Example 6
As a pretreatment process for anodic oxidation of aluminum material in the embodiment of the present invention, the only difference between the embodiment and the embodiment 1 is: the concentration of aluminum ions in the aluminum material polishing solution is 12 g/L.
Example 7
As a pretreatment process for anodic oxidation of aluminum material in the embodiment of the present invention, the only difference between the embodiment and the embodiment 1 is: the concentration of aluminum ions in the aluminum material polishing solution is 18 g/L.
Example 8
As a pretreatment process for anodic oxidation of aluminum material in the embodiment of the present invention, the only difference between the embodiment and the embodiment 1 is: the concentration of aluminum ions in the aluminum material polishing solution is 20 g/L.
Performance testing
Effect test
1. 24 pieces of 10cm x 10cm aluminium panels were cut. The aluminum plates were chemically polished using the pretreatment process for anodizing the aluminum materials of examples 1-8, respectively. Respectively putting the aluminum material polishing solution into a test tank, adding aluminum sulfate to control the concentration of aluminum ions, controlling the temperature of the aluminum material polishing solution in the test tank, putting an aluminum plate, polishing for 70s, taking out, naturally drying the aluminum plate, and polishing three aluminum plates in parallel in each embodiment.
2. The gloss of the aluminum panels was measured using an LS192 gloss meter, the position of the test spot was randomly selected for each aluminum panel, 3 times of the test, the average value was taken, and the gloss of three aluminum panels polished in parallel for each example was averaged, and the results are shown in table 1.
3. The mass of the aluminum plate before and after polishing was measured by an analytical balance and the weight loss ratio was calculated, and the average value was taken for each example, and the results are shown in table 1.
TABLE 1 polishing Effect of pretreatment process for anodizing aluminum materials in examples 1 to 8
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. The pretreatment process for anodic oxidation of the aluminum material is characterized by comprising the following steps of: immersing the aluminum material in an aluminum material polishing solution, and performing chemical polishing at the temperature of 95-110 ℃, wherein the chemical polishing time is 60-80 s;
the aluminum material polishing solution comprises 1000-1200 g/L of phosphoric acid, 480-550 g/L of sulfuric acid, 0.18-0.22 g/L of copper sulfate, 0.38-0.45 g/L of nickel sulfate, 0.043-0.058 g/L of silver nitrate, 0.45-0.63 g/L of potassium hydrogen peroxydisulfate, 0.3-0.5 g/L of ammonium molybdate, 0.1-0.3 g/L of hexadecylamine and water serving as a solvent, and does not contain nitric acid; the aluminum material polishing solution is also added with aluminum ions, and the concentration of the aluminum ions is 10-20 g/L.
2. The pretreatment process for anodizing aluminum materials as claimed in claim 1, wherein the temperature of said chemical polishing is 100 to 105 ℃.
3. The pretreatment process for anodizing aluminum materials as claimed in claim 1, wherein the time for chemical polishing is 65-75 s.
4. The pretreatment process for anodizing aluminum materials as claimed in claim 1, wherein the concentration of aluminum ions in the aluminum material polishing solution is 12 to 18 g/L.
5. The pretreatment process for anodizing aluminum materials as claimed in claim 4, wherein the concentration of aluminum ions in the aluminum material polishing solution is 15-18 g/L.
6. The aluminum material anodizing polishing method is characterized by comprising the following steps of:
(1) carrying out a pretreatment process for anodizing the material according to any one of claims 1 to 5;
(2) and (3) carrying out anodic oxidation on the aluminum material treated in the step (1).
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| CN202110283384.2A CN113186578B (en) | 2021-03-16 | 2021-03-16 | Pretreatment process for aluminum anodic oxidation and aluminum anodic oxidation polishing method |
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| CN202110283384.2A CN113186578B (en) | 2021-03-16 | 2021-03-16 | Pretreatment process for aluminum anodic oxidation and aluminum anodic oxidation polishing method |
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| CN113186578B CN113186578B (en) | 2023-04-11 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260461A (en) * | 2011-07-01 | 2011-11-30 | 佛山科学技术学院 | Smoke-free polishing treatment solution for high-gloss aluminum sectional material and use method thereof |
| CN105525326A (en) * | 2014-12-22 | 2016-04-27 | 比亚迪股份有限公司 | Preparation method for aluminum alloy shell and aluminum alloy shell |
| CN105734574A (en) * | 2016-03-18 | 2016-07-06 | 博罗县东明化工有限公司 | Polishing solution |
| CN106757039A (en) * | 2017-02-23 | 2017-05-31 | 浙江大学 | A kind of alumina polishing fluid and preparation method thereof |
| CN107177848A (en) * | 2017-05-10 | 2017-09-19 | 广东伟业铝厂集团有限公司 | A kind of aluminium smokeless-polishing liquid |
| CN108914130A (en) * | 2018-08-30 | 2018-11-30 | 白强 | A kind of environment-friendly type aluminium polishing fluid and its preparation and polishing method |
| CN110257840A (en) * | 2019-07-23 | 2019-09-20 | 佛山市骏虎表面技术有限公司 | A kind of method of aluminium alloy spraying pre-treatment |
| CN111996533A (en) * | 2020-07-23 | 2020-11-27 | 黄珊珉 | Environment-friendly aluminum alloy chemical polishing solution and preparation method and polishing method thereof |
-
2021
- 2021-03-16 CN CN202110283384.2A patent/CN113186578B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260461A (en) * | 2011-07-01 | 2011-11-30 | 佛山科学技术学院 | Smoke-free polishing treatment solution for high-gloss aluminum sectional material and use method thereof |
| CN105525326A (en) * | 2014-12-22 | 2016-04-27 | 比亚迪股份有限公司 | Preparation method for aluminum alloy shell and aluminum alloy shell |
| CN105734574A (en) * | 2016-03-18 | 2016-07-06 | 博罗县东明化工有限公司 | Polishing solution |
| CN106757039A (en) * | 2017-02-23 | 2017-05-31 | 浙江大学 | A kind of alumina polishing fluid and preparation method thereof |
| CN107177848A (en) * | 2017-05-10 | 2017-09-19 | 广东伟业铝厂集团有限公司 | A kind of aluminium smokeless-polishing liquid |
| CN108914130A (en) * | 2018-08-30 | 2018-11-30 | 白强 | A kind of environment-friendly type aluminium polishing fluid and its preparation and polishing method |
| CN110257840A (en) * | 2019-07-23 | 2019-09-20 | 佛山市骏虎表面技术有限公司 | A kind of method of aluminium alloy spraying pre-treatment |
| CN111996533A (en) * | 2020-07-23 | 2020-11-27 | 黄珊珉 | Environment-friendly aluminum alloy chemical polishing solution and preparation method and polishing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张允诚 等: "《电镀手册》", 31 January 2007, 国防工业出版社 * |
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