CN107937959A - A kind of preparation process of aluminium alloy anode oxide film - Google Patents
A kind of preparation process of aluminium alloy anode oxide film Download PDFInfo
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- CN107937959A CN107937959A CN201711249622.8A CN201711249622A CN107937959A CN 107937959 A CN107937959 A CN 107937959A CN 201711249622 A CN201711249622 A CN 201711249622A CN 107937959 A CN107937959 A CN 107937959A
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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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/24—Cleaning or pickling metallic material with solutions or molten salts with neutral solutions
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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
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
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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
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
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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
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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
- C25D11/246—Chemical after-treatment for sealing layers
Abstract
The invention discloses a kind of preparation process of aluminium alloy anode oxide film, including：S01, mechanical polishing；S02, pre-treatment：Aluminium alloy after polishing is subjected to degreasing；S03, cleaning；S04, anodic oxidation：Aluminium alloy after cleaning is subjected to anodized immediately；S05, coloring：Aluminium alloy after S04 is handled is cleaned to surface noresidue, drying, by mill base silk-screen on the anode oxide film of aluminium alloy；S06, sealing of hole：By the aluminium alloy after S05 is handled with after water rinsed surfaces, sealing pores.The anodic oxidation membrane preparation method provided in the present invention uses sulphuric acid anodizing method, is aided with the component and method being adapted, and the aluminium alloy anode oxide film for making to prepare has natural fragrance, lifts its surcharge.Further, the anodic oxidation film hardness prepared of anodic oxidation membrane preparation method in the present invention is high, gap is more, strong adsorption force, is conducive to dye, and after Seal treatment, has higher resistance to corrosion.
Description
Technical field
The invention belongs to technical field of aluminum alloy surface treatment, and in particular to a kind of preparation work of aluminium alloy anode oxide film
Skill.
Background technology
Under normal circumstances, aluminum alloy surface can form one layer 0.2-0.6 μm of Natural Oxide Film, thus organized aluminium into
One step is corroded.The Natural Oxide Film of aluminum alloy surface is very thin and flexible, therefore is easy to be destroyed and loses protective effect.
The oxide-film of aluminum alloy surface has certain electric conductivity at the same time, it is difficult to which tissue alloy matrix aluminum is by electrochemical corrosion.Therefore,
In order to effectively protect Al-alloy products under various circumstances from corrosion, thicker and excellent performance is manufactured by artificial method
Oxide-film, and aluminum alloy surface oxidation processes, the method for generally use chemistry or electrochemistry, i.e. chemical oxidation and anodic oxygen
Chemical industry skill.
Anode oxidation process, that is, electrolysis, its principle are：In the electrolytic solution, aluminium alloy is anode, in aluminium alloy after energization
Surface Creation oxide-film（Alumina layer）.The anodic oxidation of aluminium alloy is substantially exactly the electrolysis of water, in electricity after electrolyte energization
Hydrolyzed under the action of stream, release hydrogen on cathode, the negatively charged anion Ghandler motion that faces south moves, and discharges electricity in anode
Son, a part are newborn（Atom）Oxygen and anode reactive aluminum, generate sewage oxidation aluminium film.The process of aluminium alloy anode oxide and electrolysis
The property of liquid, reaction product, electric current, voltage, temperature and processing time are closely bound up, once treatment conditions do not meet use
It is required that anodic oxidation reactions are likely to occur following different situation.
1st, the product on anode is soluble.Before solution is not up to saturation, metal dissolves, in this case
Oxide-film can not be formed.
2nd, reaction product is almost insoluble in the electrolytic solution, and the strong insulating properties film of adhesion is formed on anode surface, is claimed
For barrier type oxide-film, film several seconds interior formation after powered up.
3rd, reaction product generates firm oxide-film in the electrolytic solution, and part is solvable.That is, in oxide-film
While growth, some dissolving, so as to generate pin hole in film, enables the electric current on anode to pass through.With oxide-film
Growth, resistance also gradually increases, and the growth rate of film decreases.The growth rate of film and the species of electrolyte and electrolysis bar
Part is related, and especially temperature influences dissolution velocity maximum.
4th, oxidation product is partly dissolved, and cannot be closely attached on anode（Electrobrightening）.
The anodic oxidation film thickness of aluminium alloy is generally at 6-30 μm, and hard films are up to more than 60 μm, in the prior art, aluminium
Alloy anode oxidation processes have become a part important in aluminum alloy surface treatment process, are especially led in electronics 3C Product
Domain, the anodic oxidation of aluminum alloy materials have become a kind of most common means of incrustation.In aluminium alloy anode oxide technique
On the premise of reaching its maturity, how to develop the anode oxidation process with new additional function is to expand aluminum alloy materials to use
The major technological breakthrough of scope.In electronics 3C Product, aluminium alloy anode oxide product is used as housing, due to that can appoint
Meaning coloring, metal sense is strong, quality is slim and graceful, receives the favor of many consumers.
The content of the invention
In order to increase the surcharge of aluminium alloy anode oxide technique, providing one kind in the present invention and can prepare has
The novel preparation process of the anode oxide film of fragrance, the anodic oxidation membrane preparation method use sulphuric acid anodizing method, are aided with phase
The component and method of adaptation, the aluminium alloy anode oxide film for making to prepare have natural fragrance, lift its surcharge.Into one
Step ground, the anodic oxidation film hardness prepared of anode oxidation process in the present invention is high, gap is more, strong adsorption force, is conducive to contaminate
Color, after Seal treatment, has higher resistance to corrosion.
The technique effect of the invention to be reached is realized by following scheme：
The aluminium alloy anode oxide technique provided in the present invention, includes the following steps：
S01, mechanical polishing：Surface is carried out to pending aluminium alloy using diatomite polishing agent and is polished to specular light, rough surface
It is 0.1-0.15 μm to spend Ra；
S02, pre-treatment：Aluminium alloy after polishing is placed in the degreaser circulated, the degreaser component and component contain
Measure and be for sodium carbonate 2-3wt%, sodium phosphate 5-6wt%, surfactant 3-5wt%, Herba Blumeae Balsamiferae extract 0.05-0.1wt%, surplus
Water, degreaser temperature is 50-55 DEG C in processing procedure, and when degreasing is 2-3 minutes a length of；The surfactant is that HLB value is 12-
13 monoalkyl phosphoric acid esters and the mixture of α-sulfofattyacidmethylestersalt, both mass ratioes are 1:（1.2-1.3）；
S03, cleaning：After degreasing, with 50-55 DEG C of water spray surface to aluminum alloy surface noresidue；
S04, anodic oxidation：Aluminium alloy after cleaning is put immediately into anodizing solution and carries out anodic oxidation, the sun
The formula and process conditions of pole oxidation solution be：Solvent is water, sulfuric acid 210-215g/L, oxalic acid 6-8 g/L, malic acid 2-3 g/L,
Spathulenol 0.5-0.8mL/L, lactic acid 6-8mL/L, glycerine 5-6mL/L, manganese sulfate 3-4g/L, current density 1.2-1.25A/
dm3, temperature is 25-30 DEG C, and the time of anodic oxidation is 8-10min, and the thickness of the anode oxidation membrane obtained is 25-30 μ
M, film layer porosity are 18-20%；
S05, coloring：Aluminium alloy after S04 is handled is cleaned to surface noresidue, drying, by mill base silk-screen in the sun of aluminium alloy
On the oxide-film of pole, the formula of the mill base is：Solvent is water, inorganic dyestuff 30-50g/L, carboxymethyl cellulose 15-20g/L, partially
Sodium phosphate 0.3-0.5g/L, carvol 0.05-0.1g/L, neroli oil 0.1-0.12g/L, nerolidol 0.05-0.06g/L；
The preparation method of the mill base is：Under conditions of 60-80r/min mixing speeds, carboxymethyl cellulose is poured into water
To being uniformly dispersed, then add inorganic dyestuff and be uniformly dispersed under 200-300r/min mixing speeds, then add other raw materials,
It is using planetary mixer that all stock dispersions are uniform, mill base pH is finally adjusted in the range of 4.5-4.8；
S06, sealing of hole：By the aluminium alloy after S05 is handled with after 50-55 DEG C of water rinsed surfaces, sealed in 100-102 DEG C of vapor
Hole handles 10-12min, recycles normal-temperature water to be sprayed to aluminum alloy surface noresidue.
Further, in S02, the surfactant is the monoalkyl phosphoric acid esters that HLB value is 12.4 and alpha-sulfo fat
The mixture of sour methyl esters salt, both mass ratioes are 1:1.25.
Further, in S03, shower water is high pressure water, hydraulic pressure 0.2-0.4MPa.
Further, in S04, the thickness of the anode oxidation membrane obtained is 30 μm, and film layer porosity is 20%.
Further, in S05, the inorganic dyestuff includes sodium tartrate antimony, ammonium citrate bismuth, copper sulphate, cobalt acetate, chlorine
Change the one or more in gold, iron ammonium oxalate, sodium molybdate, sodium sulphate, sodium selenate, silver nitrate, tin ammonium chloride, ammonium chloride stannous
Combination.
Further, repeat S05 steps in the technique, and chromatography printing is carried out using the mill base of different colours
The pattern of multiple color can be obtained.
Further, in S05, the printing plate mesh number that silk-screen uses is 200-400 mesh printing plate.
Further, in S05, the cocoanut fatty acid diethanolamide of 0.02-0.04g/L is further included in the mill base.
Further, in S05, the barium metaborate of 0.02-0.04g/L is further included in the mill base.
Further, the anode oxidation process is suitable for wrought aluminium alloy.
The present invention has the following advantages：
A kind of novel preparation process that can be prepared and have dulcet anode oxide film, the anodic oxidation are provided in the present invention
Membrane preparation method uses sulphuric acid anodizing method, is aided with the component and method being adapted, makes the aluminium alloy anode oxide prepared
Film has natural fragrance, lifts its surcharge.Further, the anodic oxidation membrane preparation method in the present invention is prepared
Anodic oxidation film hardness is high, gap is more, strong adsorption force, is conducive to dye, and after Seal treatment, has higher energy against corrosion
Power.
Embodiment
With reference to embodiment, the present invention will be described in detail.
Aluminum alloy sample employed in the embodiment of the present invention is 15 × 20cm made by 6063 aluminium alloy punching presses
Mobile phone shell, the preparation of anode oxide film is carried out altogether in embodiment using the above-mentioned mobile phone shells of 1000PCS.
Embodiment 1
Comprise the following steps that：
S01, mechanical polishing：
Surface is carried out to pending aluminum alloy specimen using diatomite polishing agent and is polished to specular light, is surveyed after polishing using roughness
Try instrument test aluminum alloy specimen diverse location（10 positions）Surface roughness, the measured surface roughness Ra average value arrived
In 0.1-0.15 μ ms.
The purpose of mechanical polishing is to enable aluminum alloy to specimen surface to obtain smooth neat processing plane, removes the nature on surface
Oxide layer and the spot that may be adhered to.Roughness need to be controlled reasonably, and otherwise anode oxidation process prepares the oxidation produced
Film easily produces the shape to rise and fall on Macrovision face, influences yields.
S02, pre-treatment：
Aluminum alloy specimen after polishing is placed in the degreaser circulated, degreaser component and constituent content are sodium carbonate
2.5wt%, sodium phosphate 5.8wt%, surfactant 3.8wt%, Herba Blumeae Balsamiferae extract 0.1wt%, surplus are water, are taken off in processing procedure
Fat liquid temperature degree is 55 DEG C, a length of 2 minutes during degreasing
Surfactant is the mixture of the monoalkyl phosphoric acid esters that HLB value is 12.4 and α-sulfofattyacidmethylestersalt, Liang Zhezhi
Amount is than being 1:1.25.
The purpose of degreasing is to remove the greasy dirt on aluminum alloy specimen surface, to ensure aluminum alloy specimen surface in subsequent technique
The cleaning of uniformity and anodizing solution, lifts the surface quality of aluminum alloy specimen.Common aluminium alloy degreasing method includes organic
Solvent method, sulfuric acid process, electrolysis, Method of Soda etc..The effect of organic solvent method decontamination is good, but easily remains in aluminum alloy specimen
Surface, subsequently needs to be removed with the method for alkali cleaning or pickling, adds the complexity of processing, and in view of increasingly serious
Environmental issue, the management and control that organic matter uses is increasingly stringent, the processing cost of organic liquid waste costly, so should avoid using
Organic solvent method decontamination.The method of pickling needs the sulfuric acid using high concentration, and degreasing power is weak compared with alkali wash, and acid cleaning process
Acid strength and reaction temperature need to strictly be controlled, otherwise can cause aluminum alloy specimen surface excessive corrosion and moisture content it is a large amount of
Evaporation.Although alkali cleaning degreasing effect is good, it is very easy to cause the excessive corrosion of aluminium shape surface, and cleaning process compares
It is complicated, it is transferred to that the speed of rinse bath is slower, and efficiency is low after degreasing.
Compared to existing degreasing process is played, what is selected in the present invention is that surfactant method carries out degreasing, using suitable
Surfactant removes aluminum alloy specimen surface and oil contaminant, on the one hand being adapted the sodium carbonate used, sodium phosphate increases degreaser
Fat melting ability, on the other hand can increase penetrating power of the surfactant to aluminum alloy specimen surface, react skimming processes
Entirely.By the compatible use of monoalkyl phosphoric acid esters and α-sulfofattyacidmethylestersalt, aluminum alloy specimen surface can be effectively removed
Greasy dirt, and the monoalkyl phosphoric acid esters of specific HLB value and α-sulfofattyacidmethylestersalt have appropriate lipophile, work as removing
Greasy dirt can be dissolved in aqueous solution later, will not form excessive residual, monoalkyl phosphorus on aluminum alloy specimen surface
Acid esters and α-sulfofattyacidmethylestersalt still belong to environmental type surfactant, and environmental pollution is small, liquid waste processing difficulty
It is small.Meanwhile also added a small amount of Herba Blumeae Balsamiferae extract in degreaser, Herba Blumeae Balsamiferae extract is a kind of natural free of contamination adds
Add agent, be added into the efficiency that degreasing can be effectively increased in degreaser, after degreasing, Herba Blumeae Balsamiferae extract can be in aluminium alloy
Specimen surface forms uniform, very thin protective film, makes to avoid Acidic Liquid excessive to aluminum alloy specimen matrix rotten in subsequent step
Erosion.
S03, cleaning：
After degreasing, with 50 DEG C of water spray surfaces to the noresidue of aluminum alloy specimen surface, shower water is high pressure water, and hydraulic pressure is
0.3MPa, on the one hand enables aluminum alloy to that specimen surface is clean, and another aspect high-temperature water can maintain temperature, enables aluminum alloy to sample and is initially entered
It will not be had an impact after anodizing tank due to temperature difference（After spray, aluminum alloy specimen surface temperature is on 30 DEG C of left sides
It is right）.
S04, anodic oxidation：
Aluminum alloy specimen after cleaning is put immediately into anodizing solution and carries out anodic oxidation, the formula of anodizing solution
And process conditions are：Solvent is water, sulfuric acid 210g/L, oxalic acid 7g/L, malic acid 2.7 g/L, spathulenol 0.6mL/L, lactic acid
6mL/L, glycerine 5mL/L, manganese sulfate 3g/L, current density 1.25A/dm3, temperature is 30 DEG C, and the time of anodic oxidation is
10min, the thickness of the anode oxidation membrane obtained is 30 μm, and film layer porosity is 20%.
Acidic Liquid base fluid is used as using sulfuric acid, oxalic acid, malic acid mixing in the anodic oxidation formula of liquid of the present embodiment, at the same time
The adjusting of anodic oxidation speed is carried out using lactic acid, glycerine, manganese sulfate, acid strength and auxiliary additive amount need to be controlled strictly
System, otherwise can not obtain the anode oxidation membrane of setting thickness.Further, a small amount of spathulenol is also added in formula, this
Bar alcohol is a kind of botanical extract with special odor, and anodizing solution can be lifted in right amount in anodizing solution by adding
Activity, while cause the anodic oxide coating prepared that there is vegetal faint odor.Anode oxidation process in the present invention
The anode oxide film film layer porosity prepared is up to 20%, there is provided the surface pore condition of mill base, warp are accommodated in tinting steps
Experimental comparison, the mill base that anode oxide film of the porosity less than 18% is difficult to be applicable in the present invention are coloured, and thick in the present invention
When anode oxide film of the degree more than 30 μm is coloured, easily there is the situation of distribution of color inequality, therefore anodic oxidation need to be controlled
The thickness of film.
S05, coloring：
Aluminum alloy specimen after previous step is handled is cleaned to surface noresidue, drying, by mill base with 200 mesh printing plate silk-screens in
On the anode oxide film of aluminium alloy, the formula of the mill base is：Solvent is water, inorganic dyestuff 30g/L, carboxymethyl cellulose 16g/
L, sodium metaphosphate 0.3g/L, carvol 0.08g/L, neroli oil 0.12g/L, nerolidol 0.06g/L.
The preparation method of mill base is：Under conditions of 80r/min mixing speeds, carboxymethyl cellulose is poured into water and is extremely divided
Dissipate uniformly, then add inorganic dyestuff and be uniformly dispersed under 300r/min mixing speeds, then add other raw materials, utilize planet
Mixer is uniform all stock dispersions, and it is 4.6 finally to adjust mill base pH.
For the inorganic dyestuff used in the present embodiment for chlorauride, the color formed is mulberry, and adjustment mill base pH value makes
It is ammonia spirit.
It with the addition of carvol, neroli oil and nerolidol in coloring mill base in the present invention, above-mentioned medicament is not with the use of
Mill base can only be increased to aluminum alloy specimen surface anodization permeability of the membrane, and carry vegetal fragrance, make envelope
Aluminum alloy specimen surface after the processing of hole has vegetal breath, pleasant.
S06, sealing of hole：
By the aluminum alloy specimen after previous step is handled with after 50 DEG C of water rinsed surfaces, the sealing pores in 100 DEG C of vapor
12min, recycles normal-temperature water to be sprayed to the noresidue of aluminum alloy specimen surface.
In the present embodiment, the final yields of aluminum alloy specimen is 98%, utilization common sulphuric acid anodizing liquid in the prior art
（It is commercially available）The final yields of same aluminum alloy specimen handled is similarly 98%.
Embodiment 2
The present embodiment conditional is same as Example 1, and the condition of change is：It also added the coconut oil of 0.04g/L in mill base
Fatty diglycollic amide.Cocoanut fatty acid diethanolamide can not only increase mill base to aluminum alloy specimen surface anode oxygen
Change permeability of the membrane, and the breath of vegetalitas fragrance can be made denseer.
In the present embodiment, the final yields of aluminum alloy specimen is 98%.
Embodiment 3
The present embodiment conditional is same as Example 1, and the condition of change is：It also added the metaboric acid of 0.04g/L in mill base
Barium, barium metaborate can lift the stability of mill base, make its more resistance to storage.
In the present embodiment, the final yields of aluminum alloy specimen is 98%.
Chromatography can be also carried out using the anode oxidation process in the present invention, i.e., repeats S05 steps using the mill base of different colours
It is rapid, the pattern of multiple color can be obtained.
From the explanation of above-described embodiment, the anodic oxidation membrane preparation method provided in the present invention uses sulfuric acid anodic oxygen
Change method, is aided with the component and method being adapted, and the aluminium alloy anode oxide film for making to prepare has natural fragrance, and it is attached to lift its
Price markup value.The anodic oxidation film hardness prepared of anodic oxidation membrane preparation method further, in the present invention is high, gap is more,
Strong adsorption force, be conducive to dye, and after Seal treatment, has higher resistance to corrosion.
It is last it should be noted that above example only to illustrate the technical solution of the embodiment of the present invention rather than to its into
Row limitation, although the embodiment of the present invention is described in detail with reference to preferred embodiment, those of ordinary skill in the art
It should be understood that still can be to the technical solution technical scheme is modified or replaced equivalently of the embodiment of the present invention, and these are changed or wait
The scope of amended technical solution disengaging technical solution of the embodiment of the present invention cannot also be made with replacement.
Claims (10)
1. a kind of preparation process of aluminium alloy anode oxide film, it is characterised in that include the following steps：
S01, mechanical polishing：Surface is carried out to pending aluminium alloy using diatomite polishing agent and is polished to specular light, rough surface
It is 0.1-0.15 μm to spend Ra；
S02, pre-treatment：Aluminium alloy after polishing is placed in the degreaser circulated, the degreaser component and component contain
Measure and be for sodium carbonate 2-3wt%, sodium phosphate 5-6wt%, surfactant 3-5wt%, Herba Blumeae Balsamiferae extract 0.05-0.1wt%, surplus
Water, degreaser temperature is 50-55 DEG C in processing procedure, and when degreasing is 2-3 minutes a length of；The surfactant is that HLB value is 12-
13 monoalkyl phosphoric acid esters and the mixture of α-sulfofattyacidmethylestersalt, both mass ratioes are 1:（1.2-1.3）；
S03, cleaning：After degreasing, with 50-55 DEG C of water spray surface to aluminum alloy surface noresidue；
S04, anodic oxidation：Aluminium alloy after cleaning is put immediately into anodizing solution and carries out anodic oxidation, the sun
The formula and process conditions of pole oxidation solution be：Solvent is water, sulfuric acid 210-215g/L, oxalic acid 6-8 g/L, malic acid 2-3 g/L,
Spathulenol 0.5-0.8mL/L, lactic acid 6-8mL/L, glycerine 5-6mL/L, manganese sulfate 3-4g/L, current density 1.2-1.25A/
dm3, temperature is 25-30 DEG C, and the time of anodic oxidation is 8-10min, and the thickness of the anode oxidation membrane obtained is 25-30 μ
M, film layer porosity are 18-20%；
S05, coloring：Aluminium alloy after S04 is handled is cleaned to surface noresidue, drying, by mill base silk-screen in the sun of aluminium alloy
On the oxide-film of pole, the formula of the mill base is：Solvent is water, inorganic dyestuff 30-50g/L, carboxymethyl cellulose 15-20g/L, partially
Sodium phosphate 0.3-0.5g/L, carvol 0.05-0.1g/L, neroli oil 0.1-0.12g/L, nerolidol 0.05-0.06g/L；
The preparation method of the mill base is：Under conditions of 60-80r/min mixing speeds, carboxymethyl cellulose is poured into water
To being uniformly dispersed, then add inorganic dyestuff and be uniformly dispersed under 200-300r/min mixing speeds, then add other raw materials,
It is using planetary mixer that all stock dispersions are uniform, mill base pH is finally adjusted in the range of 4.5-4.8；
S06, sealing of hole：By the aluminium alloy after S05 is handled with after 50-55 DEG C of water rinsed surfaces, sealed in 100-102 DEG C of vapor
Hole handles 10-12min, recycles normal-temperature water to be sprayed to aluminum alloy surface noresidue.
2. the preparation process of aluminium alloy anode oxide film as claimed in claim 1, it is characterised in that：In S02, the surface-active
Agent is the mixture of the monoalkyl phosphoric acid esters that HLB value is 12.4 and α-sulfofattyacidmethylestersalt, both mass ratioes are 1:1.25.
3. the preparation process of aluminium alloy anode oxide film as claimed in claim 1, it is characterised in that：In S03, shower water is high pressure
Water, hydraulic pressure 0.2-0.4MPa.
4. the preparation process of aluminium alloy anode oxide film as claimed in claim 1, it is characterised in that：In S04, the anode that is obtained
The thickness of oxidation film layer is 30 μm, and film layer porosity is 20%.
5. the preparation process of aluminium alloy anode oxide film as claimed in claim 1, it is characterised in that：In S05, the inorganic dyestuff
Including sodium tartrate antimony, ammonium citrate bismuth, copper sulphate, cobalt acetate, chlorauride, iron ammonium oxalate, sodium molybdate, sodium sulphate, sodium selenate,
One or more kinds of combinations in silver nitrate, tin ammonium chloride, ammonium chloride stannous.
6. the preparation process of aluminium alloy anode oxide film as claimed in claim 1, it is characterised in that：Repeat in the technique
S05 steps, and carry out chromatography printing using the mill base of different colours and can obtain the pattern of multiple color.
7. the preparation process of aluminium alloy anode oxide film as claimed in claim 1, it is characterised in that：In S05, the print of silk-screen use
Version mesh number is 200-400 mesh printing plates.
8. the preparation process of aluminium alloy anode oxide film as claimed in claim 1, it is characterised in that：In S05, in the mill base also
Cocoanut fatty acid diethanolamide including 0.02-0.04g/L.
9. the preparation process of aluminium alloy anode oxide film as claimed in claim 1, it is characterised in that：In S05, in the mill base also
Barium metaborate including 0.02-0.04g/L.
10. the preparation process of aluminium alloy anode oxide film as claimed in claim 1, it is characterised in that：The anode oxidation process
Suitable for wrought aluminium alloy.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111572224A (en) * | 2020-05-26 | 2020-08-25 | 惠州市金艺机械制品有限公司 | Screen printing process replacing multicolor oxidation |
| CN111809212A (en) * | 2020-07-23 | 2020-10-23 | 王东亮 | Aluminum strip anodic oxidation surface pretreatment equipment |
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