CN105506706A - Aluminum alloy anodizing coloring treatment method - Google Patents
Aluminum alloy anodizing coloring treatment method Download PDFInfo
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- CN105506706A CN105506706A CN201610003255.2A CN201610003255A CN105506706A CN 105506706 A CN105506706 A CN 105506706A CN 201610003255 A CN201610003255 A CN 201610003255A CN 105506706 A CN105506706 A CN 105506706A
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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
- C25D11/24—Chemical after-treatment
- C25D11/243—Chemical after-treatment using organic dyestuffs
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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
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Abstract
The invention relates to an aluminum alloy anodizing coloring treatment method, and belongs to the technical field of metal materials. In the mode of direct-current low-voltage power source loading, a sulfuric acid solution is used as a main ingredient of an electrolyte, and anodizing coloring is carried out with organic dyestuff as a dyeing agent through the method of organic dyestuff adsorption coloring. The method includes the concrete steps of anodizing treatment, wherein the sulfuric acid solution electrolyte is used, a low-voltage direct-current power source is used, and the treatment is carried out at normal temperature, and after treatment is finished, deionized water washing and airing are conducted to obtain an anodised aluminum film sample surface of a crystalline state structure; coloring treatment, wherein the organic dyestuff is dissolved fully, heated to 45 DEG C and kept warm, and a prepared anodised aluminum film sample is put in the organic dyestuff, and soaked for 30 min to form a dyed sample. Heat in the treatment process is small, and concentrated heat production is effectively avoided. The prepared anodised aluminum film is of the crystalline state structure, and surface hardness, abrasive resistance and corrosion resistance are greatly improved.
Description
Technical field
The invention belongs to technical field of metal, particularly relate to a kind of aluminium alloy anode oxide coloring treatment process, for aluminum alloy surface process.
Background technology
Density is low, specific tenacity is high owing to having for aluminium alloy, there is the features such as good mechanical property, good solidity to corrosion, excellent electrical and thermal conductivity and good castability, have in fields such as modern automobile industry, space industry, telecommunications industry, computer industrys and apply very widely.
Aluminium alloy is a kind of important engineering materials, and under physical environment, its surface can form one deck Natural Oxide Film, but this amorphous membrane structure is loose, can not provide good solidity to corrosion, cannot meet service requirements.This oxide film weathering resistance that formed under physical environment and all non-constant of reliability, routine use is easily damaged, especially when the extreme environment problems such as current acid rain, industrial dust, Greenhouse effect, the shortcoming of this respect is given prominence to especially, and this will cause the impact of high degree on the surperficial resistance to corrosion of aluminium alloy.
2024 aluminium alloys are Al-Cu-Mg alloy, are widely used in aircraft heavy forging and slab, rivet, automotive hub, propeller element and other various structural part.Due to the wearing and tearing under long term operation condition and fatigue wear; need carry out special processing to its surface and form protective film, adopt surface treatment can improve protective, ornamental and functional, overcome the shortcoming of Al and Alalloy surface property aspect; improve corrosion-proof wear, increase the service life.
Traditional technology adopts sulfuric acid process mostly to aluminium alloy anode oxide process, during process, voltage of supply is higher, because sulfuric acid has strong oxidizing property and corrodibility, a large amount of heats can be discharged during the chemical reaction occurred in electrolyzer, need to increase heat sink and carry out cooling process to whole production unit, this proposes high requirement to production technique.
Traditional stains method many employings one-step electrolysis of aluminium alloy or two one-step electrolysis methods, need to introduce corresponding metal-salt, the improper easy contaminate environment of heavy mental treatment, be unfavorable for energy-saving and emission-reduction, aluminum alloy surface color after coloring treatment is comparatively single, wanting to obtain colourful color often causes technical process complicated, and production cost is higher.
, easily there is local corrosion and intergranular corrosion in the Cu element containing high level in the alloying constituent of 2024 aluminium alloys.It is generally acknowledged, in anode oxidation process, CuAl2 phased soln is very fast, and usually become the center of current collection, easily cause the rete at this position overheated and dissolve, serious meeting is burnt and even punctured part.Anonizing in general about aluminum alloy surface process, is difficult to obtain further genralrlization on 2024 aluminium alloys due to above-mentioned multiple condition restriction.
Summary of the invention
For the technical problem of above-mentioned existence, in order to overcome the deficiency of above-mentioned conventional anodization technique, the invention provides a kind of aluminium alloy anode oxide coloring treatment process, adopt the power supply loading regime of direct current, low voltage, plant and instrument comparatively simplifies, and in production process, energy consumption is lower, and flow operations is simple, painted in extensive range, coloury, aluminium alloy anode oxide coloring treatment process.
The object of the invention is to be achieved through the following technical solutions:
A kind of aluminium alloy anode oxide coloring treatment process of the present invention, with the power supply loading regime of direct current, low voltage, using sulphuric acid soln as the main component of electrolytic solution, adopt the method for organic dye adsorption coloring, be that staining agent carries out anodic oxidation with organic dye, concrete steps are:
(1) anodic oxidation treatment: anodic oxidation treatment is carried out to aluminum alloy specimen with the electrolytic solution of sulphuric acid soln; Power supply loading mode is direct current, carries out anodic oxidation treatment; Temperature is normal temperature condition; Clean with deionized water immediately after having processed and dry, obtain the anodic aluminum oxide film specimen surface of crystalline structure;
(2) coloring treatment: fully dissolved by organic dye, is heated to 45 DEG C and is incubated, and puts into the sample of the anodic aluminum oxide film prepared, and soaks 20 ~ 30min, forms stained specimens.
Further, also carry out seal treatment technique after described coloring treatment technique, taken out by the sample after coloring treatment, after deionized water rinsing is clean, add in boiling water and be incubated, sealing treatment completes; Take out sample, deionized water rinsing is clean, dry.
Further, described seal treatment technique parameter is: deionized water; Temperature 100 DEG C; PH value 5.5 ~ 6.5; Boiling time 20 ~ 30min.
Further, before described anodic oxidation treatment technique, also carry out pre-treatment, to polish successively aluminum alloy specimen with 240# to 1200# sand paper, aluminum alloy surface is polished smooth, puts into ethanol and clean oil removal treatment; Be coated with rubbing paste on aluminum alloy sample surface, carry out mechanical polishing process; Carry out alkali cleaning, pickling successively, then dry up with deionized water rinsing, obtain totally and do not have the aluminum alloy specimen of cut.
Further, the bath composition of described sulphuric acid soln is: sulfuric acid concentration is 150 ~ 200g/L, and Tai-Ace S 150 concentration is 10 ~ 20g/L.
Further, the roughness value Ra of described anodic aluminum oxide film is less than 0.5 μm.
Further, described anodic oxidation treatment time 8000s ~ 10000s.
Further, described galvanic voltage is 5 ~ 10V.
Further, described organic dye adsorption coloring processing parameter is: staining fluid is: X-type organic dye 3 ~ 5g/L; Dyeing time 20 ~ 30min; Staining fluid temperature 40 ~ 45 DEG C.Beneficial effect of the present invention is:
1. the present invention is applicable to 2024 aluminium alloys, adopt the direct current of 5 ~ 10V, voltage is lower, the heat produced in anodic oxidation treatment process is little, process at normal temperatures, electrolyzer is outside without the need to increasing unnecessary cooling system, compares traditional sulphuric acid anodizing treatment facility Structure and energy flow process simpler, the deficiency of traditional electrolyte technique can be overcome to a certain extent, the generation of the concentrated heat production situation effectively avoiding 2024 aluminium alloys easily to occur in the anodic oxidation treatment stage.
2. the anodic aluminum oxide film that anodic oxidation treatment of the present invention is prepared is crystalline structure, and erosion resistance compares the primary Amorphous Films of Alumina Prepared of aluminum alloy surface, and surface hardness, wear resistance and erosion resistance all greatly strengthen.
3. the anodized aluminum surfaces prepared of anodic oxidation treatment of the present invention is smooth, and roughness value (Ra) is less than 0.5 μm, and good maintains sample bright and clean surface originally, is conducive to next step coloring treatment.
4. dyeing process technique of the present invention is simple, and the X-type reactive dyestuffs dichloro s-triazine selected, is widely used in textile industry, be a kind of cheap, be easy to the dye for fabrics that obtains, its case being used in aluminum alloy surface dyeing is still rare.The characteristic that the present invention utilizes this dyestuff color various, effectively can improve the outward appearance of aluminium alloy, improve its attractive, decorative, and the aluminium alloy appearance colour firmness after painted is high, sun-proof degree is high.
Accompanying drawing explanation
Fig. 1 is the stereoscan photograph of anodised aluminium of the present invention.
Fig. 2 is the X-ray diffraction detected result of anodised aluminium of the present invention.
Fig. 3 is the surfaceness detected result of anodised aluminium of the present invention.
Embodiment
Describe the present invention below in conjunction with drawings and Examples.
Embodiment 1: a kind of aluminium alloy anode oxide coloring treatment process of the present invention, with the power supply loading regime of direct current, low voltage, using sulphuric acid soln as the main component of electrolytic solution, adopt the method for organic dye adsorption coloring, be that staining agent carries out anodic oxidation with organic dye, concrete steps are:
(1) 2024 raw material of aluminum alloy are cut into the square sample of 15mm × 15mm × 10mm size;
(2) pre-treatment: polish successively with 240# to 1200# sand paper, aluminum alloy surface polished smooth, puts into ethanol and cleans oil removal treatment; Be coated with a little rubbing paste on aluminum alloy sample surface, carry out mechanical polishing process; Carry out alkali cleaning, pickling successively, then dry up with deionized water rinsing, obtain totally and do not have the aluminum alloy specimen of cut;
(3) anodic oxidation treatment: anodic oxidation treatment is carried out to aluminum alloy specimen with the electrolytic solution of sulphuric acid soln, the bath composition of sulphuric acid soln is: sulfuric acid concentration is 184g/L, and Tai-Ace S 150 concentration is 20g/L; Power supply loading mode is 10V direct current, carries out anodic oxidation treatment, time 8000s; Temperature is normal temperature condition; Clean with deionized water immediately after having processed and dry, obtain high-quality as Figure 1-3 and be the anodic aluminum oxide film specimen surface of crystalline structure; The roughness value Ra of described anodic aluminum oxide film be less than 0.5 for μm;
(4) coloring treatment: organic dye is fully dissolved, be heated to 45 DEG C and be incubated, put into the sample of the anodic aluminum oxide film prepared, soak 30min, form stained specimens, the sample surfaces processed is caught multiple different colours, and Color is good, uniform and stable, without defects such as macroscopic crackle, breakage, slag inclusion, pores.Described organic dye adsorption coloring processing parameter is: staining fluid is: X-type organic dye 5g/L; Dyeing time 30min; Staining fluid temperature 40 ~ 45 DEG C;
(5) seal treatment technique, takes out the sample after coloring treatment, and after deionized water rinsing is clean, add in boiling water and be incubated, sealing treatment completes; Take out sample, deionized water rinsing is clean, dry.
Described seal treatment technique parameter is: deionized water 300mL; Temperature 100 DEG C; PH value 5.5; Boiling time 30min.
Embodiment 2: this example as different from Example 1: in the anodic oxidation treatment technique of this example: sulfuric acid concentration is 150g/L, Tai-Ace S 150 concentration is 18g/L; Power supply loading mode is 8V direct current, carries out anodic oxidation treatment, time 10000s; Temperature is normal temperature condition; Clean with deionized water immediately after having processed and dry, obtain high-quality as Figure 1-3 and be the anodic aluminum oxide film specimen surface of crystalline structure; The roughness value Ra of described anodic aluminum oxide film be less than 0.5 for μm.
Coloring treatment: fully dissolved by organic dye, is heated to 45 DEG C and is incubated, and puts into the sample of the anodic aluminum oxide film prepared, and soaks 28min, and form stained specimens, the sample surfaces processed is caught multiple different colours.Described organic dye adsorption coloring processing parameter is: staining fluid is: X-type organic dye 3g/L; Dyeing time 25min; Staining fluid temperature 43 DEG C.
Described seal treatment technique parameter is: deionized water temperature 100 DEG C; PH value 6.5; Boiling time 25min.
Embodiment 3: this example as different from Example 1: in the anodic oxidation treatment technique of this example: sulfuric acid concentration is 200g/L, Tai-Ace S 150 concentration is 10g/L; Power supply loading mode is 5V direct current, carries out anodic oxidation treatment, time 9000s; Temperature is normal temperature condition; Clean with deionized water immediately after having processed and dry, obtain high-quality as Figure 1-3 and be the anodic aluminum oxide film specimen surface of crystalline structure; The roughness value Ra of described anodic aluminum oxide film be less than 0.5 for μm.
Coloring treatment: fully dissolved by organic dye, is heated to 45 DEG C and is incubated, and puts into the sample of the anodic aluminum oxide film prepared, and soaks 20min, and form stained specimens, the sample surfaces processed is caught multiple different colours.Described organic dye adsorption coloring processing parameter is: staining fluid is: X-type organic dye 4g/L; Dyeing time 20min; Staining fluid temperature 40 DEG C.
Described seal treatment technique parameter is: deionized water temperature 100 DEG C; PH value 6; Boiling time 20min.
Embodiment 4: this example as different from Example 1: in the anodic oxidation treatment technique of this example: sulfuric acid concentration is 160g/L, Tai-Ace S 150 concentration is 15g/L; Power supply loading mode is 6V direct current, carries out anodic oxidation treatment, time 9500s; Temperature is normal temperature condition; Clean with deionized water immediately after having processed and dry, obtain high-quality as Figure 1-3 and be the anodic aluminum oxide film specimen surface of crystalline structure; The roughness value Ra of described anodic aluminum oxide film be less than 0.5 for μm.
Coloring treatment: fully dissolved by organic dye, is heated to 45 DEG C and is incubated, and puts into the sample of the anodic aluminum oxide film prepared, and soaks 25min, and form stained specimens, the sample surfaces processed is caught multiple different colours.Described organic dye adsorption coloring processing parameter is: staining fluid is: X-type organic dye 4.5g/L; Dyeing time 22min; Staining fluid temperature 44 DEG C.
Described seal treatment technique parameter is: deionized water temperature 100 DEG C; PH value 5.8; Boiling time 28min.
Claims (9)
1. an aluminium alloy anode oxide coloring treatment process, it is characterized in that: with the power supply loading regime of direct current, low voltage, using sulphuric acid soln as the main component of electrolytic solution, adopt the method for organic dye adsorption coloring, be that staining agent carries out anodic oxidation with organic dye, concrete steps are:
(1) anodic oxidation treatment: anodic oxidation treatment is carried out to aluminum alloy specimen with the electrolytic solution of sulphuric acid soln; Power supply loading mode is direct current, carries out anodic oxidation treatment; Temperature is normal temperature condition; Clean with deionized water immediately after having processed and dry, obtain the anodic aluminum oxide film specimen surface of crystalline structure;
(2) coloring treatment: fully dissolved by organic dye, is heated to 45 DEG C and is incubated, and puts into the sample of the anodic aluminum oxide film prepared, and soaks 20 ~ 30min, forms stained specimens.
2. aluminium alloy anode oxide coloring treatment process according to claim 1, it is characterized in that: after described coloring treatment technique, also carry out seal treatment technique, the sample after coloring treatment is taken out, after deionized water rinsing is clean, add in boiling water and be incubated, sealing treatment completes; Take out sample, deionized water rinsing is clean, dry.
3. aluminium alloy anode oxide coloring treatment process according to claim 2, is characterized in that: described seal treatment technique parameter is: deionized water; Temperature 100 DEG C; PH value 5.5 ~ 6.5; Boiling time 20 ~ 30min.
4. aluminium alloy anode oxide coloring treatment process according to claim 1, it is characterized in that: before described anodic oxidation treatment technique, also carry out pre-treatment, to polish successively aluminum alloy specimen with 240# to 1200# sand paper, aluminum alloy surface is polished smooth, puts into ethanol and clean oil removal treatment; Be coated with rubbing paste on aluminum alloy sample surface, carry out mechanical polishing process; Carry out alkali cleaning, pickling successively, then dry up with deionized water rinsing, obtain totally and do not have the aluminum alloy specimen of cut.
5. aluminium alloy anode oxide coloring treatment process according to claim 1, it is characterized in that: the bath composition of described sulphuric acid soln is: sulfuric acid concentration is 150 ~ 200g/L, Tai-Ace S 150 concentration is 10 ~ 20g/L.
6. aluminium alloy anode oxide coloring treatment process according to claim 1, is characterized in that: the roughness value Ra of described anodic aluminum oxide film is less than 0.5 μm.
7. aluminium alloy anode oxide coloring treatment process according to claim 1, is characterized in that: described anodic oxidation treatment time 8000s ~ 10000s.
8. aluminium alloy anode oxide coloring treatment process according to claim 1, is characterized in that: described galvanic voltage is 5 ~ 10V.
9. aluminium alloy anode oxide coloring treatment process according to claim 1, is characterized in that: described organic dye adsorption coloring processing parameter is: staining fluid is: X-type organic dye 3 ~ 5g/L; Dyeing time 20 ~ 30min; Staining fluid temperature 40 ~ 45 DEG C.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105908204A (en) * | 2016-06-23 | 2016-08-31 | 十堰恒融实业有限公司 | Surface anti-corrosion treatment technology for aluminum fuel tanks |
| CN106422240A (en) * | 2016-11-11 | 2017-02-22 | 佛山市南海区卓航五金厂 | Table tennis net frame |
| CN106498391A (en) * | 2016-09-29 | 2017-03-15 | 歌尔股份有限公司 | The multi-layer film structure of heat-tinting |
| CN107868972A (en) * | 2017-12-22 | 2018-04-03 | 江汉大学 | A kind of red colored method of illuminating colour and aluminum alloy die casting |
| CN107868971A (en) * | 2017-12-22 | 2018-04-03 | 江汉大学 | A kind of illuminating colour and aluminum alloy die casting green coloring method |
| CN107937963A (en) * | 2017-12-22 | 2018-04-20 | 江汉大学 | A kind of illuminating colour and aluminum alloy die casting golden yellow color method |
| CN107937964A (en) * | 2017-12-22 | 2018-04-20 | 江汉大学 | A kind of bright yellow coloring method of illuminating colour and aluminum alloy die casting |
| CN108103549A (en) * | 2017-12-22 | 2018-06-01 | 江汉大学 | A kind of illuminating colour and aluminum alloy die casting black coloration method |
| CN108103550A (en) * | 2017-12-22 | 2018-06-01 | 江汉大学 | A kind of illuminating colour and aluminum alloy die casting brown colouration method |
| CN108117773A (en) * | 2017-12-22 | 2018-06-05 | 江汉大学 | A kind of illuminating colour and the blackish green color method of aluminum alloy die casting |
| CN108130579A (en) * | 2017-12-22 | 2018-06-08 | 江汉大学 | A kind of illuminating colour and aluminum alloy die casting kermesinus color method |
| CN108373742A (en) * | 2016-11-11 | 2018-08-07 | 齐齐哈尔大学 | A kind of production method of colour zinc-aluminium metal coating |
| CN110396695A (en) * | 2019-08-15 | 2019-11-01 | 成都亚佳工程新技术开发有限公司 | A kind of method of the aluminising of air-guide handrail, anodic oxidation and coloring |
| CN112609219A (en) * | 2020-11-17 | 2021-04-06 | 中国航发西安动力控制科技有限公司 | Bath solution for red anodic oxidation of aluminum alloy material and process method |
| US11312107B2 (en) * | 2018-09-27 | 2022-04-26 | Apple Inc. | Plugging anodic oxides for increased corrosion resistance |
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| CN105908204A (en) * | 2016-06-23 | 2016-08-31 | 十堰恒融实业有限公司 | Surface anti-corrosion treatment technology for aluminum fuel tanks |
| CN105908204B (en) * | 2016-06-23 | 2018-10-26 | 十堰恒融实业有限公司 | A kind of aluminum fuel tank surface anticorrosive treatment technology |
| CN106498391A (en) * | 2016-09-29 | 2017-03-15 | 歌尔股份有限公司 | The multi-layer film structure of heat-tinting |
| CN106498391B (en) * | 2016-09-29 | 2019-04-30 | 歌尔股份有限公司 | The multi-layer film structure of heat-tinting |
| CN108373742A (en) * | 2016-11-11 | 2018-08-07 | 齐齐哈尔大学 | A kind of production method of colour zinc-aluminium metal coating |
| CN106422240A (en) * | 2016-11-11 | 2017-02-22 | 佛山市南海区卓航五金厂 | Table tennis net frame |
| CN108373742B (en) * | 2016-11-11 | 2020-10-27 | 齐齐哈尔大学 | Method for manufacturing color zinc-aluminum metal coating |
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| CN108103550A (en) * | 2017-12-22 | 2018-06-01 | 江汉大学 | A kind of illuminating colour and aluminum alloy die casting brown colouration method |
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| CN107937963A (en) * | 2017-12-22 | 2018-04-20 | 江汉大学 | A kind of illuminating colour and aluminum alloy die casting golden yellow color method |
| CN107868972A (en) * | 2017-12-22 | 2018-04-03 | 江汉大学 | A kind of red colored method of illuminating colour and aluminum alloy die casting |
| US11312107B2 (en) * | 2018-09-27 | 2022-04-26 | Apple Inc. | Plugging anodic oxides for increased corrosion resistance |
| CN110396695A (en) * | 2019-08-15 | 2019-11-01 | 成都亚佳工程新技术开发有限公司 | A kind of method of the aluminising of air-guide handrail, anodic oxidation and coloring |
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|---|---|
| CN105506706B (en) | 2018-01-19 |
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