CN104152970A - Compound coloring method of aluminum profile - Google Patents
Compound coloring method of aluminum profile Download PDFInfo
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- CN104152970A CN104152970A CN201410402027.3A CN201410402027A CN104152970A CN 104152970 A CN104152970 A CN 104152970A CN 201410402027 A CN201410402027 A CN 201410402027A CN 104152970 A CN104152970 A CN 104152970A
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Abstract
The invention relates to the technical field of coloring of aluminum profiles, and provides a compound coloring method of an aluminum profile, wherein the compound coloring method has the advantages of uniform and bright colored surface of a workpiece, shorter coloring time and high efficiency. The compound coloring method comprises pretreatment and coloring treatment, wherein the pretreatment comprises oil removal, neutralization and anodic oxidation; and the coloring treatment comprises electrolytic coloring and chemical coloring.
Description
Technical field
The present invention relates to the dye technology field of aluminium section bar, relate in particular to a kind of composite coloration method of aluminium section bar.
Background technology
Alumilite process refers to that aluminium arrives the positive pole of external power in cell liquid as anodic bonding, the negative electrode of cell liquid is connected to the negative pole of external power, under impressed voltage by electric current to maintain the process of electrochemical oxidation reactions, in this process, the surface of aluminum or aluminum alloy is converted into layer oxide film conventionally, and this tunic has protective, ornamental and some other functional performance.Aluminium generates layer oxide film carry out anodic oxidation treatment in sulphuric acid soln after on product surface, and the appearance of this layer of oxide film, is porous, is called porous layer.And the bottom of oxide film and aluminum substrate are connected, be fine and close oxide film thin layer, also referred to as active coating or blocking layer.
This aluminium with anode oxide film is immersed in the electrolytic solution of certain metal-salt, and as an electrode (because of with alternating-current), and another extremely can use pure metal plate or graphite, the stainless steel plate etc. identical with electrolytic solution institute metal-containing salt.In the time that the two poles of the earth pass to alternating-current simultaneously, (general under the condition of low voltage and low current density), aluminum products just automatically become negative electrode, and face discharges hydrogen from it, it is poor that metal ion in while metallic solution forms strong ionic concn near aluminum products, and be deep on active layer by porous layer, alternately bear violent reductive action and oxygenizement slowly, also be that active coating attracts metal ion consumingly, and repeatedly there is electric discharge and precipitating metal particulate or metal oxide with the negative static charge producing there, and be deposited on 3～6 μ m places, bottom of oxide film minute aperture, the metal particle amount of separating out is about 0.01g/dm
2.It is hair-like, spherical or granular that these particulates are conventionally, and its diameter is 100～150, and length is several microns, and under effect of light, these metal particle generation diffraction, just make oxide film present shades of colour, and this is electrolytic coloring, also claims electropolishing.
There is the shortcoming that tone is single in above electrolytic coloring method, and painted required time is long, and efficiency is low.In addition, the more difficult assurance of electrolysis time, the long workpiece excessive dissolution that easily causes of electrolysis time, electrolysis time is too short, there will be again workpiece surface brightless, presents lead.
Summary of the invention
Therefore,, for above content, the invention provides a kind of workpiece surface uniform coloring, light, the composite coloration method of the aluminium section bar that the painted time is shorter, efficiency is high.
For achieving the above object, the present invention is achieved by the following technical solutions: a kind of composite coloration method of aluminium section bar, comprise pre-treatment and painted processing, described pre-treatment comprises oil removing, neutralization, anodic oxidation, and described painted processing comprises electrolytic coloring and chemical stain.
Further improving is that the concrete steps of described oil removing are: aluminium section bar is put into washing bath groove and carry out oil removal treatment, be dissolved with the sulfuric acid that concentration is 130～145g/L in described washing bath, the oil removing time is controlled at 5～8min.
Further improve and be: the concrete grammar of described neutralizing treatment is, the liquid that contains sulfuric acid of draining after oil removal treatment, rejoins the liquid that contains highly basic, and the concentration of described highly basic is controlled at 50～58g/L, the temperature of neutralizing treatment is controlled at 50～59 DEG C, and the treatment time is 13～18min.
Further improve and be: described anode oxidation method is using the aluminium section bar after neutralizing treatment as anode, and to immerse in the electrolytic solution of 175～178g/L sulphuric acid soln current density 60～70A/m
214～15 volts of operating voltage, 13～16 DEG C of electrolysis time 35～50min of electrolysis temperature.
Further improve and be: described electrolytic coloring method is, in electrolyzer, the concentration of stannous sulfate is 8g/L, and concentration of nickel sulfate is 25g/L, sulfuric acid 24g/L, and pH is controlled at 0.8～0.9, and cell liquid temperature is controlled at 17 DEG C, and electrolysis time is 1～2min.
Further improve and be: the concrete technology of described chemical stain is, aluminium section bar after electrolytic coloring is immersed in chemical stain groove, in described chemical stain groove, be added with organic dye, described organic dye is matching stain, dye strength is 0.8～2g/L, dipping time is 5～10min, and pH is 6～7, and temperature is controlled at 40～50 DEG C.
Further improve and be: after described electrolytic coloring, also carry out aberration Processing for removing.
Further improving is that the concrete steps of described aberration Processing for removing are: the aluminium section bar after electrolytic coloring is washed fast.
By adopting aforementioned techniques scheme, the invention has the beneficial effects as follows: the composite coloration method of aluminium section bar of the present invention, first aluminium section bar is carried out to oil removing, neutralization, the pollutents such as the grease of aluminium section bar workpiece surface are cleaned up, then carry out anodic oxidation, again it is carried out to painted processing, painted processing is divided into electrolytic coloring and chemical stain, first carry out electrolytic coloring, carry out again chemical stain, in electrolyzer, the concentration of stannous sulfate is 8g/L, concentration of nickel sulfate is 25g/L, sulfuric acid 24g/L, pH is controlled at 0.8～0.9, cell liquid temperature is controlled at 17 DEG C, electrolysis time is 1～2min, then carry out chemical stain, the concrete technology of described chemical stain is: the aluminium section bar after electrolytic coloring is immersed in chemical stain groove, in described chemical stain groove, be added with organic dye, described organic dye is matching stain, dye strength is 0.8～2g/L, dipping time is 5～10min, pH is 6～7, temperature is controlled at 40～50 DEG C, by the control of electrolytic colouring technology parameter, and the control of Study on chemical coloring technology parameter, both are combined, make the aluminium section bar coloring effect that makes better, uniform coloring, the required painted time is shorter, efficiency is high.In addition, in the complete rear water-based of carrying out fast of electrolysis, can make the aluminium shape surface aberration making be eliminated, color is homogeneous more.
Embodiment
Describe embodiments of the present invention in detail below with reference to specific embodiment, to the present invention, how utilisation technology means solve technical problem whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.
If do not specialize, the conventional means that the technique means adopting in embodiment is well known to those skilled in the art, the reagent adopting and product are also and can business obtain.Source, the trade(brand)name of agents useful for same and be necessary to list its moiety person all indicated in the time occurring first.
Embodiment mono-
A composite coloration method for aluminium section bar, comprises following treatment step:
Pre-treatment: (1) oil removing, aluminium section bar is put into washing bath groove and carry out oil removal treatment, in described washing bath, be dissolved with the sulfuric acid that concentration is 130g/L, the oil removing time is controlled at 5min;
(2) neutralization: the liquid of draining after oil removal treatment and containing sulfuric acid, rejoin the liquid that contains highly basic, the concentration of described highly basic is controlled at 50g/L, and the temperature of neutralizing treatment is controlled at 50 DEG C, and the treatment time is 13min;
(3) anodic oxidation: using the aluminium section bar after neutralizing treatment as anode, and immerse in the electrolytic solution of 175g/L sulphuric acid soln current density 60A/m
214 volts of operating voltage, 13 DEG C of electrolysis time 35min of electrolysis temperature;
Painted processing: (4) electrolysis process, in electrolyzer, the concentration of stannous sulfate is 8g/L, concentration of nickel sulfate is 25g/L, sulfuric acid 24g/L, pH is controlled at 0.8, and cell liquid temperature is controlled at 17 DEG C, and electrolysis time is 1min;
(5) chemical stain: the aluminium section bar after electrolytic coloring is immersed in chemical stain groove, be added with organic dye in described chemical stain groove, described organic dye is matching stain, dye strength is 0.8g/L, dipping time is 5min, and pH is 6, and temperature is controlled at 40 DEG C.
Embodiment bis-
A composite coloration method for aluminium section bar, comprises following treatment step:
Pre-treatment: (1) oil removing, aluminium section bar is put into washing bath groove and carry out oil removal treatment, in described washing bath, be dissolved with the sulfuric acid that concentration is 140g/L, the oil removing time is controlled at 5min;
(2) neutralization: the liquid of draining after oil removal treatment and containing sulfuric acid, rejoin the liquid that contains highly basic, the concentration of described highly basic is controlled at 55g/L, and the temperature of neutralizing treatment is controlled at 54 DEG C, and the treatment time is 16min;
(3) anodic oxidation: using the aluminium section bar after neutralizing treatment as anode, and immerse in the electrolytic solution of 176g/L sulphuric acid soln current density 65A/m
214 volts of operating voltage, 14 DEG C of electrolysis time 45min of electrolysis temperature;
Painted processing: (4) electrolysis process, in electrolyzer, the concentration of stannous sulfate is 8g/L, concentration of nickel sulfate is 25g/L, sulfuric acid 24g/L, pH is controlled at 0.85, and cell liquid temperature is controlled at 17 DEG C, and electrolysis time is 1min;
(5) washing: the aluminium section bar workpiece after electrolysis treatment is washed fast;
(6) chemical stain: the aluminium section bar after washing is immersed in chemical stain groove, be added with organic dye in described chemical stain groove, described organic dye is matching stain, and dye strength is 1.5g/L, and dipping time is 7min, and pH is 6.5, and temperature is controlled at 45 DEG C.
Embodiment tri-
A composite coloration method for aluminium section bar, comprises following treatment step:
Pre-treatment: (1) oil removing, aluminium section bar is put into washing bath groove and carry out oil removal treatment, in described washing bath, be dissolved with the sulfuric acid that concentration is 145g/L, the oil removing time is controlled at 5min;
(2) neutralization: the liquid of draining after oil removal treatment and containing sulfuric acid, rejoin the liquid that contains highly basic, the concentration of described highly basic is controlled at 58/L, and the temperature of neutralizing treatment is controlled at 59 DEG C, and the treatment time is 18min;
(3) anodic oxidation: using the aluminium section bar after neutralizing treatment as anode, and immerse in the electrolytic solution of 178g/L sulphuric acid soln current density 70A/m
215 volts of operating voltage, 16 DEG C of electrolysis time 50min of electrolysis temperature;
Painted processing: (4) electrolysis process, in electrolyzer, the concentration of stannous sulfate is 8g/L, concentration of nickel sulfate is 25g/L, sulfuric acid 24g/L, pH is controlled at 0.9, and cell liquid temperature is controlled at 17 DEG C, and electrolysis time is 2min;
(5) washing: the aluminium section bar workpiece after electrolysis treatment is washed fast;
(6) chemical stain: the aluminium section bar after washing is immersed in chemical stain groove, be added with organic dye in described chemical stain groove, described organic dye is matching stain, and dye strength is 2g/L, and dipping time is 10min, and pH is 7, and temperature is controlled at 50 DEG C.
The composite coloration method of aluminium section bar of the present invention, first aluminium section bar is carried out to oil removing, neutralization, the pollutents such as the grease of aluminium section bar workpiece surface are cleaned up, then carry out anodic oxidation, again it is carried out to painted processing, painted processing is divided into electrolytic coloring and chemical stain, first carry out electrolytic coloring, carry out again chemical stain, in electrolyzer, the concentration of stannous sulfate is 8g/L, concentration of nickel sulfate is 25g/L, sulfuric acid 24g/L, pH is controlled at 0.8～0.9, cell liquid temperature is controlled at 17 DEG C, electrolysis time is 1～2min, then carry out chemical stain, the concrete technology of described chemical stain is: the aluminium section bar after electrolytic coloring is immersed in chemical stain groove, in described chemical stain groove, be added with organic dye, described organic dye is matching stain, dye strength is 0.8～2g/L, dipping time is 5～10min, pH is 6～7, temperature is controlled at 40～50 DEG C, by the control of electrolytic colouring technology parameter, and the control of Study on chemical coloring technology parameter, both are combined, make the aluminium section bar coloring effect that makes better, uniform coloring, the required painted time is shorter, efficiency is high.In addition, in the complete rear water-based of carrying out fast of electrolysis, can make the aluminium shape surface aberration making be eliminated, color is homogeneous more.
Above record, only, for utilizing the embodiment of this origination techniques content, modification, variation that any those skilled in the art use this creation to do, all belong to the scope of the claims that this creation is advocated, and be not limited to those disclosed embodiments.
Claims (8)
1. a composite coloration method for aluminium section bar, comprises pre-treatment and painted processing, it is characterized in that: described pre-treatment comprises oil removing, neutralization, anodic oxidation, and described painted processing comprises electrolytic coloring and chemical stain.
2. the composite coloration method of aluminium section bar according to claim 1, it is characterized in that: the concrete steps of described oil removing are: aluminium section bar is put into washing bath groove and carry out oil removal treatment, in described washing bath, be dissolved with the sulfuric acid that concentration is 130～145g/L, the oil removing time is controlled at 5～8min.
3. the composite coloration method of aluminium section bar according to claim 1, it is characterized in that: the concrete grammar of described neutralizing treatment is, the liquid that contains sulfuric acid of draining after oil removal treatment, rejoin the liquid that contains highly basic, the concentration of described highly basic is controlled at 50～58g/L, the temperature of neutralizing treatment is controlled at 50～59 DEG C, and the treatment time is 13～18min.
4. according to the composite coloration method of the aluminium section bar described in claim 1 or 2 or 3, it is characterized in that: described anode oxidation method is, using the aluminium section bar after neutralizing treatment as anode, and immerse in the electrolytic solution of 175～178g/L sulphuric acid soln current density 60～70A/m
214～15 volts of operating voltage, 13～16 DEG C of electrolysis time 35～50min of electrolysis temperature.
5. the composite coloration method of aluminium section bar according to claim 4, it is characterized in that: described electrolytic coloring method is, in electrolyzer, the concentration of stannous sulfate is 8g/L, concentration of nickel sulfate is 25g/L, sulfuric acid 24g/L, pH is controlled at 0.8～0.9, and cell liquid temperature is controlled at 17 DEG C, and electrolysis time is 1～2min.
6. the composite coloration method of aluminium section bar according to claim 5, it is characterized in that: the concrete technology of described chemical stain is, aluminium section bar after electrolytic coloring is immersed in chemical stain groove, in described chemical stain groove, be added with organic dye, described organic dye is matching stain, and dye strength is 0.8～2g/L, and dipping time is 5～10min, pH is 6～7, and temperature is controlled at 40～50 DEG C.
7. the composite coloration method of aluminium section bar according to claim 1, is characterized in that: after described electrolytic coloring, also carry out aberration Processing for removing.
8. the composite coloration method of aluminium section bar according to claim 7, is characterized in that: the concrete steps of described aberration Processing for removing are: the aluminium section bar after electrolytic coloring is washed fast.
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| CN201410402027.3A CN104152970A (en) | 2014-08-15 | 2014-08-15 | Compound coloring method of aluminum profile |
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| CN201410402027.3A CN104152970A (en) | 2014-08-15 | 2014-08-15 | Compound coloring method of aluminum profile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065489A (en) * | 2016-06-24 | 2016-11-02 | 广东坚美铝型材厂（集团）有限公司 | A kind of aluminium section bar electrolysis coloring processes |
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| JPS59177396A (en) * | 1983-03-28 | 1984-10-08 | Kazuo Yokoyama | Coloring method of anodic oxide film of aluminum making combination use of secondary electrolysis and dyeing |
| CN1050911A (en) * | 1989-10-11 | 1991-04-24 | 湖南大学 | The aluminum or aluminum alloy anode oxide film electrolytic colouring technology |
| JPH1161491A (en) * | 1997-08-12 | 1999-03-05 | Sumitomo Light Metal Ind Ltd | Electrolytic coloring of aluminum |
| JP2000273695A (en) * | 1999-03-19 | 2000-10-03 | Ykk Corp | Formation of gray colored aluminum or aluminum alloy material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065489A (en) * | 2016-06-24 | 2016-11-02 | 广东坚美铝型材厂（集团）有限公司 | A kind of aluminium section bar electrolysis coloring processes |
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Address after: Nanan City Blue Creek East Town Village 362300 Fujian city of Quanzhou province (a) 11 1-3 layer Applicant after: Fujian Minfa Aluminum Inc. Address before: 362300 Quanzhou, Fujian, Nanan City, South America Comprehensive Development Zone Applicant before: Fujian Minfa Aluminum Inc. |
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Application publication date: 20141119 |