CN101665969A - Method for processing anode of aluminum or aluminum alloy surface - Google Patents
Method for processing anode of aluminum or aluminum alloy surface Download PDFInfo
- Publication number
- CN101665969A CN101665969A CN200810304364A CN200810304364A CN101665969A CN 101665969 A CN101665969 A CN 101665969A CN 200810304364 A CN200810304364 A CN 200810304364A CN 200810304364 A CN200810304364 A CN 200810304364A CN 101665969 A CN101665969 A CN 101665969A
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- Prior art keywords
- aluminum
- aluminum alloy
- matrix
- anodizing
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Classifications
-
- 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
- C25D11/12—Anodising more than once, e.g. in different baths
-
- 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
- C25D11/022—Anodisation on selected surface areas
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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 relates to method for processing the anode of an aluminum or aluminum alloy surface, comprising the following steps: providing an aluminum or aluminum alloy base body which comprises aninner surface and an outer surface opposite to the inner surface; carrying out first machining processing on the outer surface of the aluminum or aluminum alloy base body so that the outer surface hasfirst machining surface effect; carrying out first-time anode processing on the aluminum or aluminum alloy base body so that the surface of the aluminum or aluminum alloy base body forms an oxidationfilm with a first color; removing a part or all of the oxidation film formed on the inner surface of the aluminum or aluminum alloy base body so that the aluminum or aluminum alloy base body is conductive; carrying out second machining processing on the outer surface of the aluminum or aluminum alloy base body; removing a part of the oxidation film positioned on the outer surface and enabling anarea the oxidation film of which is removed to have second machining surface effect; and carrying out second-time anode processing for the aluminum or aluminum alloy base body so that the area which has the second machining surface effect forms an oxidation film with a second color. The method can obtain different surface effects on a same base body.
Description
Technical field
The present invention relates to a kind of aluminum or aluminum alloy surface anode treatment method.
Background technology
In order to adapt to the development trend that the human consumer is particular about metal-like, the high-grade product of 3C Products such as computer, communication, consumer electronics is main flow gradually with the metal chassis.Metallic substance has advantages such as effectiveness is good, and thermal diffusivity is good, and rigidity is good, and is shock-resistant, also has the environmental protection characteristic of recyclable utilization simultaneously.
Advantages such as that aluminium and alloy thereof have is in light weight, rapid heat dissipation and exquisite appearance, and can select bright or cloudy surface to handle on demand, thereby be suitable for very much the making of metal chassis and picture on surface thereof.Often form one deck oxide film on the surface by anodizing on using, this oxide film can form hard wear resistant, corrosion stability is high and color and luster is graceful appearance at aluminium material surface.The existing anode processing technique that obtains the oxide film of different color in the metal chassis surface all adopts repeatedly anodizing and repeatedly painted realization, all to divide the zone of next anodizing after wherein each anodizing by the mode of covering, though this method can obtain the multicolour oxide film in the metallic surface, but technology is comparatively complicated, and, make design cost higher because will be designed for the tool that covers.Simultaneously, this method is difficult to make the ornamental figure line of high degree of accuracy.And the oxide film that this method obtained lacks stereoscopic sensation, is difficult to obtain the different surfaces effect on same metallic matrix.
Summary of the invention
In view of this, the invention provides a kind of anode treatment method that on same aluminum or aluminum alloy matrix, obtains the different surfaces effect.
A kind of aluminum or aluminum alloy surface anode treatment method may further comprise the steps:
(1) provide an aluminum or aluminum alloy matrix, this matrix comprises that an internal surface reaches and the opposing outside surface of this internal surface;
(2) outside surface to this matrix carries out first kind of mechanical process, makes this outside surface have first kind of machining surface effect;
(3) this matrix is carried out the anodizing first time, to form oxide film at matrix surface with first kind of color;
(4) remove the oxide film that partly or entirely is formed on the matrix internal surface, so that this matrix conduction;
(5) outside surface to this matrix is different from first mach second kind of mechanical process, removes the partial oxide film of outside surface, and makes the zone of this removal oxide film have second kind of machining surface effect;
(6) this matrix is carried out the anodizing second time, form oxide film with the second kind of color that is different from this first kind of color with the zone that has second kind of machining surface effect at this.
Compared to prior art, aluminum or aluminum alloy of the present invention surface anode treatment method is by carrying out once above mechanical process to obtain different machining surface effects to the aluminum or aluminum alloy surface, directly anodic oxidation treatment is carried out on the surface after each machining then, and catch distinct colors, obtain to have relief different surfaces effect at same matrix surface thus.Present method need not the tool that covers that specialized designs is used to divide the anodizing zone, and technology is simple, and cost is lower.
Embodiment
Preferred embodiment aluminum or aluminum alloy of the present invention surface anode treatment method is treated to example by the anode surface to the metallic matrix of an aluminum or aluminum alloy and describes, and comprises the steps:
(1) provide an aluminum or aluminum alloy matrix, this matrix comprises an internal surface and and the opposing outside surface of this internal surface.
(2) outside surface to this matrix carries out first kind of mechanical process, makes this outside surface have first kind of machining surface effect.For example, this outer surface of matrix carries out sandblasting, makes it present mute optical haze face effect.
(3) this matrix is carried out the anodizing first time, to form oxide film at matrix surface.This step comprises: at first with this matrix in 19 ~ 21 ℃, contain in 180 ~ 220g/L vitriolic anodizing solution, carried out anodic oxidation treatment 45 ~ 55 minutes with the voltage of 10 ~ 12V.Wherein the vitriolic preferred concentration is 190 ~ 210g/L.And the metallic matrix after this anodizing carried out the painted processing first time first time, the oxide film that anodizing is for the first time generated has first kind of color.This painted processing for the first time can be adsorption coloring or chemical stain, and present embodiment is an adsorption coloring.Then, the matrix after this painted processing being carried out sealing of hole in the solution that contains hole sealing agent handles to improve the anti-pollution and corrosion resistance of its surface film oxide.Present embodiment selects for use R500 model promoting agent as hole sealing agent, and treatment temp is 90 ~ 100 ℃, and the treatment time is 12 ~ 18 minutes.At last with matrix oven dry down in about 60 ℃.
(4) remove the oxide film that partly or entirely is formed on the matrix internal surface by laser sculpture, so that this matrix conduction.
(5) outside surface to this matrix is different from first kind of mach second kind of mechanical process, removes the partial oxide film of outside surface, and makes the zone of this removal oxide film have the second kind of machining surface effect that is different from first kind of machining effect.For example, the zone after this second kind of mechanical process presents meticulous lines lines effect, such as the CD line that is similar to the optical disc surface lines, sun line etc.
(6) this matrix is carried out the anodizing second time.This step comprises: at first with this matrix in 19 ~ 21 ℃, contain in 180 ~ 220g/L vitriolic anodizing solution, carried out anodic oxidation treatment 28 ~ 32 minutes with the voltage of 9.5 ~ 10.5V.And the metallic matrix after this anodizing carried out the painted processing second time second time, oxide film that this second time, anodizing generated is had be different from second kind of color of anodizing oxide film color for the first time.This painted processing for the second time can be adsorption coloring or chemical stain, and present embodiment is an adsorption coloring.Then, the matrix after this painted processing being carried out sealing of hole in the solution that contains hole sealing agent handles to improve the anti-pollution and corrosion resistance of its surface film oxide.Present embodiment is selected SH2 model hole sealing agent for use, and treatment temp is 90 ~ 100 ℃, and the treatment time is 12 ~ 18 minutes.With matrix oven dry down in about 60 ℃, can obtain the double-colored anode surface of two kinds of different surfaces effects at last with this aluminum or aluminum alloy matrix surface.
Before carrying out this of anodizing, also matrix is carried out the anodizing pre-treatment first time.This pre-treatment comprises: clean matrix with the solution that contains the respective metal grease-removing agent, then this matrix being placed phosphoric acid and vitriolic solution to carry out chemical rightenning handles, metallic matrix desmut after then this chemical rightenning being handled with the solution that contains 20% ~ 40% nitric acid, the film of one deck black that forms on its surface when handling because of above-mentioned chemical rightenning to remove workpiece.
Be appreciated that the above step of repetition (4) to (6), can on this matrix, obtain more multilist face effect, multicoloured anode surface.
Compared to prior art, aluminum or aluminum alloy of the present invention surface anode treatment method is by carrying out once the aluminum or aluminum alloy surface Above mechanical process is directly carried out anode to the surface after each machined then to obtain different machining surface effects Oxidation processes, and catch different colors, obtain to have relief different surfaces effect at same matrix surface thus. We Method need not the tool that covers that specialized designs is used for dividing the anode processing region, and technology is simple, and cost is lower.
Claims (10)
1. aluminum or aluminum alloy surface anode treatment method may further comprise the steps:
(1) provide an aluminum or aluminum alloy matrix, this matrix comprises that an internal surface reaches and the opposing outside surface of this internal surface;
(2) outside surface to this matrix carries out first kind of mechanical process, makes this outside surface have first kind of machining surface effect;
(3) this matrix is carried out the anodizing first time, to form oxide film at matrix surface with first kind of color;
(4) remove the oxide film that partly or entirely is formed on the matrix internal surface, so that this matrix conduction;
(5) outside surface to this matrix is different from first kind of mach second kind of mechanical process, removes the partial oxide film of outside surface, and makes the zone of this removal oxide film have second kind of machining surface effect;
(6) this matrix is carried out the anodizing second time, form oxide film with the second kind of color that is different from first kind of color with the zone that has second kind of machining surface effect at this.
2. aluminum or aluminum alloy as claimed in claim 1 surface anode treatment method, it is characterized in that: described first kind of mechanical process is sandblasting, this first kind of machining surface effect is mute optical haze face effect.
3. aluminum or aluminum alloy as claimed in claim 1 surface anode treatment method, it is characterized in that: the zone after described second kind of mechanical process presents lines lines effect.
4. aluminum or aluminum alloy as claimed in claim 1 surface anode treatment method is characterized in that: described first time anodizing, the electrolytic solution of anodizing contains 180 ~ 220g/L sulfuric acid for the second time, electrolyte temperature is 19 ℃ ~ 21 ℃.
5. aluminum or aluminum alloy as claimed in claim 4 surface anode treatment method is characterized in that: described first time, anodizing voltage was between 102V ~ 12V, and the treatment time is 45 ~ 55 minutes.
6. aluminum or aluminum alloy as claimed in claim 4 surface anode treatment method is characterized in that: described second time, anodizing voltage was between 9.5V ~ 10.5V, and the treatment time is 28 ~ 32 minutes.
7. aluminum or aluminum alloy as claimed in claim 1 surface anode treatment method, it is characterized in that: described step (4) adopts laser sculpture to remove the oxide film that partly or entirely is formed on this internal surface.
8. aluminum or aluminum alloy as claimed in claim 1 surface anode treatment method is characterized in that: this first time anodizing, anodizing step includes and carries out painted and the sealing of hole processing to the anodic oxidation that generates for the first time.
9. aluminum or aluminum alloy as claimed in claim 8 surface anode treatment method is characterized in that: the described adsorption coloring that is colored as.
10. aluminum or aluminum alloy as claimed in claim 1 surface anode treatment method is characterized in that: before carrying out this of anodizing, also this matrix is carried out the anodizing pre-treatment, this pre-treatment comprises: cleaning by degreasing, chemical rightenning processing and desmut first time.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810304364A CN101665969A (en) | 2008-09-03 | 2008-09-03 | Method for processing anode of aluminum or aluminum alloy surface |
| US12/534,282 US20100051467A1 (en) | 2008-09-03 | 2009-08-03 | Process for surface treating aluminum and aluminum alloy articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810304364A CN101665969A (en) | 2008-09-03 | 2008-09-03 | Method for processing anode of aluminum or aluminum alloy surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101665969A true CN101665969A (en) | 2010-03-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810304364A Pending CN101665969A (en) | 2008-09-03 | 2008-09-03 | Method for processing anode of aluminum or aluminum alloy surface |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20100051467A1 (en) |
| CN (1) | CN101665969A (en) |
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| CN102076196A (en) * | 2010-12-01 | 2011-05-25 | 英华达（上海）科技有限公司 | Technology for manufacturing film-covered metal shell with exposed adhesive area |
| CN102205430A (en) * | 2011-05-10 | 2011-10-05 | 沪华五金电子(吴江)有限公司 | Method for processing surface of 3C (computer, communication and consumer) electronic product panel |
| CN102337573A (en) * | 2010-07-21 | 2012-02-01 | 凤凰光学股份有限公司 | Detergent for sprayed glass bead dust on aluminum alloy and dedusting method thereof |
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| CN102747399A (en) * | 2012-06-26 | 2012-10-24 | 昆山世铭金属塑料制品有限公司 | Method for double-color treatment on metal base plate surface |
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