CN105506706B - A kind of aluminium alloy anode oxide coloring treatment process - Google Patents
A kind of aluminium alloy anode oxide coloring treatment process Download PDFInfo
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- CN105506706B CN105506706B CN201610003255.2A CN201610003255A CN105506706B CN 105506706 B CN105506706 B CN 105506706B CN 201610003255 A CN201610003255 A CN 201610003255A CN 105506706 B CN105506706 B CN 105506706B
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- coloring
- sulfuric acid
- anodized
- organic dyestuff
- deionized water
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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
A kind of aluminium alloy anode oxide coloring treatment process, belongs to technical field of metal material.With direct current, the power supply load mode of low-voltage, using sulfuric acid solution as the main component of electrolyte, using the method for organic dyestuff adsorption coloring, anode oxidation coloration is carried out by coloring agent of organic dyestuff, is specially：Anodized：With the electrolyte of sulfuric acid solution；Power supply is low-voltage DC；Normal temperature condition；It is washed with deionized water after the completion of processing and dries only, obtains the anodic aluminum oxide film specimen surface of crystalline structure；Coloring treatment：Organic dyestuff is fully dissolved, 45 DEG C is heated to and is incubated, is put into the sample of the anodic aluminum oxide film prepared, soaks 30min, forms stained specimens.Caused heat is small in processing procedure of the present invention, effectively avoids the occurrence of concentrating heat production.The anodic aluminum oxide film that the present invention prepares is crystalline structure, and case hardness, wearability and corrosion resistance all greatly enhance.
Description
Technical field
The invention belongs to technical field of metal material, more particularly to a kind of aluminium alloy anode oxide coloring treatment process,
For aluminum alloy surface processing.
Background technology
Aluminium alloy is due to density is low, specific strength is high, having good mechanical property, good corrosion resistance, excellent
The features such as electrical and thermal conductivity and good casting character, in modern automobile industry, aerospace industry, telecommunications industry, computer industry
There is quite varied application Deng field.
Aluminium alloy is a kind of important engineering material, and its surface can form one layer of Native Oxide under natural environment
Film, but amorphous membrane structure is loose, it is impossible to good corrosion resistance is provided, requirement can not be met.It is this from
The oxide-film weatherability and reliability formed under right environment is all excessively poor, and routine use is easily damaged, especially in face of acid at present
It is even more to protrude during the extreme environment problem such as rain, industrial dust, greenhouse effects, the shortcomings that this respect, this is by aluminium alloy
Surface resistance to corrosion causes the influence of high degree.
2024 aluminium alloys are Al-Cu-Mg alloys, be widely used in aircraft heavy forging and slab, rivet, automotive hub,
Propeller element and other various structural members.Due to the abrasion under the conditions of long-term work and fatigue wear, it is necessary to enter to its surface
Row specially treated and form protection film layer, using surface treatment can improve protective, dicoration and feature, overcome aluminium and aluminium
The shortcomings that alloy surface aspect of performance, corrosion-proof wear is improved, is increased the service life.
Traditional handicraft uses sulfuric acid process mostly to aluminium alloy anode oxide processing, and supply voltage is higher during processing, due to sulphur
Acid has strong oxidizing property and corrosivity, can discharge substantial amounts of heat, it is necessary to increase cooling during the chemical reaction of generation in electrolytic cell
Device carries out cooling processing to whole production equipment, and this proposes high requirement to production technology.
The traditional stains method of aluminium alloy is more using one-step electrolysis or two one-step electrolysis methods, it is necessary to introduce corresponding metal
Salt, the improper easily pollution environment of heavy mental treatment, is unfavorable for energy-saving and emission-reduction, the aluminum alloy surface color after coloring treatment compared with
To be single, it is desirable to obtain colourful color and often lead to technological process complexity, production cost is higher.
Cu elements containing high level in the alloying component of 2024 aluminium alloys, easily occur local corrosion and intergranular is rotten
Erosion.It is generally believed that CuAl2 phased solns are very fast in anode oxidation process, usually as the center of current collection, this is easily caused
The film layer at position is overheated and dissolved, and serious meeting is burnt or even breakdown part.On anode of the aluminum alloy surface processing in general
Oxidizing process, it is difficult to obtain further genralrlization on 2024 aluminium alloys due to above-mentioned a variety of condition limitations.
The content of the invention
For above-mentioned technical problem, in order to overcome the shortcomings of above-mentioned conventional anodization technique, the present invention provides
A kind of aluminium alloy anode oxide coloring treatment process, using direct current, the power supply load mode of low-voltage, instrument and equipment is more
Simplified, energy consumption is relatively low in production process, and flow operations are simple, colours in extensive range, coloury, aluminum alloy anode
Heat-tinting processing method.
The purpose of the present invention is achieved through the following technical solutions：
A kind of aluminium alloy anode oxide coloring treatment process of the present invention, with direct current, the power supply load mode of low-voltage, with
Main component of the sulfuric acid solution as electrolyte, using the method for organic dyestuff adsorption coloring, enters by coloring agent of organic dyestuff
Row anodic oxidation, is concretely comprised the following steps：
(1) anodized：Anodized is carried out to aluminum alloy specimen with the electrolyte of sulfuric acid solution；Power supply adds
Load pattern is direct current, carries out anodized；Temperature is normal temperature condition；It is washed with deionized water after the completion of processing and dries in the air only immediately
It is dry, obtain the anodic aluminum oxide film specimen surface of crystalline structure；
(2) coloring treatment：Organic dyestuff is fully dissolved, 45 DEG C is heated to and is incubated, be put into the anodic oxidation prepared
The sample of aluminium film, 20~30min is soaked, form stained specimens.
Further, seal treatment technique is also carried out after the coloring treatment technique, the sample after coloring treatment is taken out,
After deionized water rinsing is clean, adds in boiling water and be incubated, Seal treatment is completed；Sample is taken out, deionized water rinsing is clean, dries
.
Further, the seal treatment technique parameter is：Deionized water；100 DEG C of temperature；PH value 5.5~6.5；Boiling
20~30min of time.
Further, pre-treatment is also carried out before the anodized technique, is polished successively with 240# to 1200# sand paper
Aluminum alloy specimen, aluminum alloy surface is polished smooth, be put into ethanol and clean oil removal treatment；Apply and polish on aluminum alloy sample surface
Cream, carry out mechanical polishing processing；Alkali cleaning, pickling are carried out successively, then is dried up with deionized water rinsing, obtain clean and no stroke
The aluminum alloy specimen of trace.
Further, the bath composition of the sulfuric acid solution is：Sulfuric acid concentration is 150~200g/L, sulfuric acid aluminum concentration
For 10~20g/L.
Further, the roughness value Ra of the anodic aluminum oxide film is less than 0.5 μm.
Further, anodized time 8000s~10000s.
Further, the voltage of the direct current is 5~10V.
Further, the organic dyestuff adsorption coloring technological parameter is：Dyeing liquor is：3~5g/L of X-type organic dyestuff；
20~30min of dyeing time；40~45 DEG C of dyeing liquor temperature.Beneficial effects of the present invention are：
1. the present invention is applied to 2024 aluminium alloys, using 5~10V direct current, voltage is relatively low, anodized process
In caused heat it is small, handle at normal temperatures, unnecessary cooling system need not be increased outside electrolytic cell, compared to traditional sulfuric acid
Anodic oxidation treatment device structure and technological process are simpler, can overcome traditional electrolyte technique to a certain extent not
Foot, effectively avoids the occurrence of the concentration heat production that 2024 aluminium alloys easily occur in the anodized stage.
2. the anodic aluminum oxide film that anodized of the present invention is prepared is crystalline structure, corrosion resistance is closed compared to aluminium
The primary Amorphous Films of Alumina Prepared of gold surface, case hardness, wearability and corrosion resistance all greatly enhance.
3. the anodized aluminum surfaces that anodized of the present invention is prepared are smooth, roughness value (Ra) is less than 0.5 μm,
The good bright and clean surface for maintaining sample script, is advantageous to next step coloring treatment.
4. colouring method technique of the present invention is simple, the X-type reactive dye dichloro s-triazine of selection, it is widely used in weaving row
Industry, it is a kind of cheap, dye for fabrics for being easily obtained, it is still rare that it is used in the case of aluminum alloy surface dyeing.
The present invention can effectively improve the outward appearance of aluminium alloy, its attractive, decorative improved, after coloring using the various characteristic of the dyestuff color
Aluminium alloy appearance colour firmness is high, sun-proof degree is high.
Brief description of the drawings
Fig. 1 is the stereoscan photograph of anodised aluminium of the present invention.
Fig. 2 is the X-ray diffraction testing result of anodised aluminium of the present invention.
Fig. 3 is the surface roughness testing result of anodised aluminium of the present invention.
Embodiment
The present invention will be described in detail with reference to the accompanying drawings and examples.
Embodiment 1：A kind of aluminium alloy anode oxide coloring treatment process of the present invention, is added with the power supply of direct current, low-voltage
Load mode, using sulfuric acid solution as the main component of electrolyte, using the method for organic dyestuff adsorption coloring, using organic dyestuff as
Coloring agent carries out anodic oxidation, concretely comprises the following steps：
(1) 2024 raw material of aluminum alloy are cut into the square sample of 15mm × 15mm × 10mm sizes；
(2) pre-treatment：Polished successively with 240# to 1200# sand paper, aluminum alloy surface is polished smooth, be put into ethanol clear
Remove oil processing；A little antiscuffing paste is applied on aluminum alloy sample surface, carries out mechanical polishing processing；Alkali cleaning, pickling are carried out successively, then
Dried up with deionized water rinsing, obtain aluminum alloy specimen clean and without cut；
(3) anodized：Anodized is carried out to aluminum alloy specimen with the electrolyte of sulfuric acid solution, sulfuric acid is molten
The bath composition of liquid is：Sulfuric acid concentration is 184g/L, and sulfuric acid aluminum concentration is 20g/L；Power supply loading mode is 10V direct currents,
Carry out anodized, time 8000s；Temperature is normal temperature condition；It is washed with deionized water after the completion of processing and dries only immediately, obtains
To high quality as Figure 1-3 and for crystalline structure anodic aluminum oxide film specimen surface；The anodised aluminium is thin
It is μm that the roughness value Ra of film, which is less than 0.5,；
(4) coloring treatment：Organic dyestuff is fully dissolved, 45 DEG C is heated to and is incubated, be put into the anodic oxidation prepared
The sample of aluminium film, 30min is soaked, form stained specimens, the sample surfaces for handling completion are caught a variety of different colours, are dyed
Work well, it is uniform and stable, the defects of the crackle that is visible by naked eyes, breakage, slag inclusion, stomata.The organic dyestuff adsorption coloring
Technological parameter is：Dyeing liquor is：X-type organic dyestuff 5g/L；Dyeing time 30min；40~45 DEG C of dyeing liquor temperature；
(5) seal treatment technique, the sample after coloring treatment is taken out, after deionized water rinsing is clean, added in boiling water
Insulation, Seal treatment are completed；Sample is taken out, deionized water rinsing is clean, dries.
The seal treatment technique parameter is：Deionized water 300mL；100 DEG C of temperature；PH value 5.5；Boiling time 30min.
Embodiment 2：This example is as different from Example 1：In the anodized technique of this example：Sulfuric acid concentration is
150g/L, sulfuric acid aluminum concentration are 18g/L；Power supply loading mode is 8V direct currents, carries out anodized, time 10000s；
Temperature is normal temperature condition；It is washed with deionized water after the completion of processing and dries only immediately, obtain high quality as Figure 1-3 and is
The anodic aluminum oxide film specimen surface of crystalline structure；It is μm that the roughness value Ra of the anodic aluminum oxide film, which is less than 0.5,.
Coloring treatment：Organic dyestuff is fully dissolved, 45 DEG C is heated to and is incubated, it is thin to be put into the anodised aluminium prepared
The sample of film, 28min is soaked, form stained specimens, the sample surfaces for handling completion are caught a variety of different colours.It is described organic
Dye Adsorption coloring process parameter is：Dyeing liquor is：X-type organic dyestuff 3g/L；Dyeing time 25min；43 DEG C of dyeing liquor temperature.
The seal treatment technique parameter is：100 DEG C of deionized water temperature；PH value 6.5；Boiling time 25min.
Embodiment 3：This example is as different from Example 1：In the anodized technique of this example：Sulfuric acid concentration is
200g/L, sulfuric acid aluminum concentration are 10g/L；Power supply loading mode is 5V direct currents, carries out anodized, time 9000s；Temperature
Spend for normal temperature condition；It is washed with deionized water after the completion of processing and dries only immediately, obtain high quality as Figure 1-3 and be crystalline substance
The anodic aluminum oxide film specimen surface of state structure；It is μm that the roughness value Ra of the anodic aluminum oxide film, which is less than 0.5,.
Coloring treatment：Organic dyestuff is fully dissolved, 45 DEG C is heated to and is incubated, it is thin to be put into the anodised aluminium prepared
The sample of film, 20min is soaked, form stained specimens, the sample surfaces for handling completion are caught a variety of different colours.It is described organic
Dye Adsorption coloring process parameter is：Dyeing liquor is：X-type organic dyestuff 4g/L；Dyeing time 20min；40 DEG C of dyeing liquor temperature.
The seal treatment technique parameter is：100 DEG C of deionized water temperature；PH value 6；Boiling time 20min.
Embodiment 4：This example is as different from Example 1：In the anodized technique of this example：Sulfuric acid concentration is
160g/L, sulfuric acid aluminum concentration are 15g/L；Power supply loading mode is 6V direct currents, carries out anodized, time 9500s；Temperature
Spend for normal temperature condition；It is washed with deionized water after the completion of processing and dries only immediately, obtain high quality as Figure 1-3 and be crystalline substance
The anodic aluminum oxide film specimen surface of state structure；It is μm that the roughness value Ra of the anodic aluminum oxide film, which is less than 0.5,.
Coloring treatment：Organic dyestuff is fully dissolved, 45 DEG C is heated to and is incubated, it is thin to be put into the anodised aluminium prepared
The sample of film, 25min is soaked, form stained specimens, the sample surfaces for handling completion are caught a variety of different colours.It is described organic
Dye Adsorption coloring process parameter is：Dyeing liquor is：X-type organic dyestuff 4.5g/L；Dyeing time 22min；Dyeing liquor temperature 44
℃。
The seal treatment technique parameter is：100 DEG C of deionized water temperature；PH value 5.8；Boiling time 28min.
Claims (4)
- A kind of 1. aluminium alloy anode oxide coloring treatment process, it is characterised in that：With direct current, the power supply loading side of low-voltage Formula, using sulfuric acid solution as the main component of electrolyte, carry out anodic oxidation；Carried out by coloring agent of organic dyestuff at coloring Reason, is concretely comprised the following steps：（1）Anodized：Anodized is carried out to aluminum alloy specimen with the electrolyte of sulfuric acid solution, the sulfuric acid is molten The bath composition of liquid is：Sulfuric acid concentration is 150~200g/L, and sulfuric acid aluminum concentration is 10~20g/L；Power supply loading mode is straight Stream electricity, the voltage of the direct current is 5~8V；Progress anodized, anodized time 8000s~ 10000s；Temperature is normal temperature condition；It is washed with deionized water after the completion of processing and dries only immediately, obtains the anodic oxidation of crystalline structure Aluminium film specimen surface, the roughness value Ra of the anodic aluminum oxide film are less than 0.5 μm；（2）Coloring treatment：Organic dyestuff is fully dissolved, 45 DEG C is heated to and is incubated, it is thin to be put into the anodised aluminium prepared The sample of film, 20~30min is soaked, form stained specimens；The organic dyestuff is：3~5g/L of X-type organic dyestuff.
- 2. aluminium alloy anode oxide coloring treatment process according to claim 1, it is characterised in that：The coloring treatment technique Seal treatment technique is also carried out afterwards, the sample after coloring treatment is taken out, and after deionized water rinsing is clean, is added in boiling water and is protected Temperature, Seal treatment are completed；Sample is taken out, deionized water rinsing is clean, dries.
- 3. aluminium alloy anode oxide coloring treatment process according to claim 2, it is characterised in that：The seal treatment technique Parameter is：Deionized water；100 DEG C of temperature；PH value 5.5~6.5；20~30min of boiling time.
- 4. aluminium alloy anode oxide coloring treatment process according to claim 1, it is characterised in that：The anodized Pre-treatment is also carried out before technique, is polished successively aluminum alloy specimen with 240# to 1200# sand paper, aluminum alloy surface is polished smooth, It is put into ethanol and cleans oil removal treatment；Antiscuffing paste is applied on aluminum alloy sample surface, carries out mechanical polishing processing；Alkali is carried out successively Wash, pickling, then dried up with deionized water rinsing, obtain aluminum alloy specimen clean and without cut.
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 Termination date: 20190104 |