CN1239745C - Aluminium part surface treating method - Google Patents
Aluminium part surface treating method Download PDFInfo
- Publication number
- CN1239745C CN1239745C CN 01129846 CN01129846A CN1239745C CN 1239745 C CN1239745 C CN 1239745C CN 01129846 CN01129846 CN 01129846 CN 01129846 A CN01129846 A CN 01129846A CN 1239745 C CN1239745 C CN 1239745C
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- CN
- China
- Prior art keywords
- aluminum component
- surface treating
- treating method
- part surface
- aluminium part
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Classifications
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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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention relates to a surface treating method for aluminum piece, which comprises the following steps: (1) forming a layer of oxide film on the surface of an aluminum piece by anodic treatment technology; (2) coloring the aluminum piece of which the surface has the oxide film; (3) carrying out film plating treatment on the colored aluminum piece. The method can further comprise a step of sealing treatment between the step (2) and the step (3). Because of the protective action of the film layer formed by the film plating treatment in the step (3), the present invention has the advantages of preventing the corrosion, the pollution and the surface fading of the aluminum piece after the anodic treatment and improving the surface quality of the aluminum piece.
Description
[technical field]
The present invention relates to a kind of aluminium part surface treating method, refer to the surface treatment method of surperficial anodizing of a kind of process and painted back aluminum component especially.
[background technology]
At present, aluminum component is in order to obtain various different colors, usually it carried out anodizing and forms layer oxide film on its surface, carries out painted afterwards.
The method that has now in the aluminum component surface colour has three kinds: first kind is the natural hair color method, and its painted going on foot with anodizing one is finished, and its surface color and polish is the oxide film color.Second kind is the adsorption coloring method, and this method is that the aluminum component after anodizing is inserted in the dye solution, with dye adsorption on oxide film and painted.The third is an electrocolor process, and this method is that the aluminum component after anodizing is inserted in the electrolytic etching of metal liquid, is deposited on the oxide film and painted by the metallic particles that will restore, and associated viscera can be with reference to the 4th, 877, No. 495 patents of the U.S..
But, because the aluminum component surface porosity porous after the anodizing, so its surface is very coarse and corrosion-vulnerable and pollution.In addition, if it is painted to adopt adsorption coloring method or electrocolor process that above-mentioned aluminum component is carried out, do not fade easily owing to there is protective layer in its surface.
In order to overcome above-mentioned shortcoming, industry has also adopted other solution, as the U.S. the 4th, 648, No. 911 patent has disclosed a kind of method of carrying out sealing treatment (Sealing Treatment) on the aluminum component of anodizing after stain, this method adopts the orifice size that dwindles on the aluminum component surface film oxide, reaches the purpose that prevents that the aluminum component surface is subjected to burn into to pollute and fade with this.
, because U.S.'s technology that the 4th, 648, No. 911 patent proposed has only been dwindled the orifice size on the aluminum component surface film oxide,, can not fundamentally overcome above-mentioned shortcoming so just delayed the degree that aluminum component is subjected to burn into to pollute and fade.
[summary of the invention]
The object of the present invention is to provide a kind of aluminium part surface treating method so that this aluminum component not fugitive color, have preferable corrosion stability, pollution resistance and surface quality.
The object of the present invention is achieved like this: aluminium part surface treating method of the present invention may further comprise the steps: (1) forms layer oxide film on the aluminum component surface by anode treatment method; (2) on aluminum component, carry out with oxide film surface painted; (3) carry out coating film treatment on the aluminum component after painted.
This method can further comprise sealing treatment (SealingTreatment) step between (2) step and (3) step.
Compared with prior art, the invention has the advantages that:, can prevent that the aluminum component after this anodizing is faded by burn into pollution and surface, and can improve the surface quality of this aluminum component by the provide protection of above-mentioned (3) step rete that coating film treatment forms.
[embodiment]
A kind of aluminium part surface treating method of the present invention mainly may further comprise the steps:
(1) forms layer oxide film on the aluminum component surface by anode treatment method;
(2) on the surface is formed with the aluminum component of oxide film, carry out painted;
(3) aluminum component after painted is carried out coating film treatment.
Wherein between (2) step and (3) step, can further comprise sealing treatment (SealingTreatment) step.Below each preferred embodiment is described in detail:
A kind of aluminium part surface treating method of the present invention, first embodiment comprises:
The first step forms one deck anode oxide film on this aluminum component surface.At first oil removing is carried out on this aluminum component surface, water cleans then, carry out electropolishing or chemical rightenning afterwards, wash once more, then will this pretreated aluminum component put into one electrolytic solution is housed, and pass to and carry out anodizing in the galvanic electrolyzer, electrolytic solution in the present embodiment adopts sulphuric acid soln, wherein this sulphuric acid soln concentration is 150～20000g/L, and this dc voltage is 12～20V, and current density is 1～2A/dm
2, the treatment time is 15 minutes to 1 hour.
In second step, the above-mentioned aluminum component that carries out after the anodizing is carried out painted processing.When above-mentioned aluminum component surface when the formed oxide thickness of anodizing reaches 3～30 μ m, this aluminum component is immersed one electrolytic solution is housed and passes in the painted electrolyzer of alternating-current and carry out painted processing.Wherein this electrolytic solution is a kind of metal-salt electrolytic solution, and this kind metal-salt electrolytic solution optionally includes Sn ion, Co ion, Ni ion or Cu ion, and this alternating current voltage is 5～30V, and the treatment time is 1 to 15 minute.
In the 3rd step, the aluminum component of above-mentioned painted mistake is carried out coating film treatment.At first this aluminum component is preheating to 100～200 ℃, puts it into then in the vacuum chamber and carried out coating film treatment 40～70 minutes.Be provided with two electrodes, two in the wherein said vacuum chamber and be used for introducing the air guide port of working gas and one and be used for the venting port of discharging waste gas and unreacting gas, to keep the constant pressure in the vacuum chamber.In above-mentioned two electrodes, first electrode links to each other with a high frequency electric source (radio-frequency power supply), and this electrode is simultaneously as the working gas decollator, links to each other with air guide port to be used for the gas of spreading the work; Second electrode grounding which is provided with the device that can place workpiece to be coated.During plated film, high frequency electric source (radio-frequency power supply) puts between two electrodes, and working gas is converted into plasma body (Plasma) by action of radio between two electrodes, forms the siliceous protective membrane of one deck thereby this plasma body on the aluminum component surface surface reaction takes place.Wherein vacuum indoor pressure is 2Pa～150Pa, and working gas then is a kind of silicon-containing gas and oxygen, and its airshed is respectively 0.5～2.5mm
3/ s and 3～5mm
3/ s, proportion is 2: 5 in working gas.Above-mentioned silicon-containing gas is selectively by 1,1,1,3,3,3-hexamethyldisiloxane or 1,1,3, and the 3-tetramethyl disiloxane constitutes.The power of above-mentioned high frequency electric source (radio-frequency power supply) is 400～600W, and the rf frequency of its generation is 12～15MHz.
Wherein can further comprise sealing treatment (Sealing Treatment) step between second step and the 3rd step.
A kind of aluminium part surface treating method of the present invention, second embodiment comprises:
The first step forms the coloured oxide film of one deck on this aluminum component surface by anodizing.At first this aluminum component surface is carried out carrying out electrochemical deoiling after the mechanical polishing, water cleans then, carries out chemical treatment afterwards, washes once more, then will this pretreated aluminum component puts into one electrolytic solution is housed, and pass in the galvanic electrolyzer and handle.The electrolytic solution that adopts in the present embodiment is the mixing solutions of sulfuric acid and sulphosalicylic acid (Sulfosalicylic Acid), wherein this vitriolic concentration is 0.1～1wt%, the concentration of this sulphosalicylic acid (Sulfosalicylic Acid) is 10～20wt%, and current density is 1～4A/dm
2, this dc voltage is 40～80V, treatment time to be 15 minutes to 1 hour, forming a layer thickness up to this aluminum component surface is coloured oxide film of 3～30 μ m.
In second step, the aluminum component that above-mentioned natural coloring is crossed carries out coating film treatment with the film coating method described in first embodiment.
Wherein the first step and second can further comprise sealing treatment (Sealing Treatment) step between going on foot.
A kind of aluminium part surface treating method of the present invention, the 3rd embodiment comprises:
The first step forms one deck anode oxide film on this aluminum component surface.At first oil removing is carried out on this aluminum component surface, water cleans then, carries out electropolishing or chemical rightenning afterwards, washes once more, then will this pretreated workpiece puts into one electrolytic solution is housed, and pass to and carry out anodizing in the galvanic electrolyzer.Electrolytic solution in the present embodiment adopts sulphuric acid soln, and wherein the concentration of this sulphuric acid soln is 150～20000g/L, and this dc voltage is 12～20V, and current density is 1～2A/dm2, and the treatment time is 15 minutes to 1 hour.
In second step, the aluminum component that above-mentioned surface is formed anode oxide film carries out painted processing.When the oxide thickness that forms when above-mentioned aluminum component surface reaches 3～30 μ m, this aluminum component immersed to dye in the treatment trough that staining agent is housed handled 5～40 minutes, produce required color up to its surface.
In the 3rd step, the aluminum component of above-mentioned painted mistake is carried out coating film treatment with the film coating method described in first embodiment.
Wherein can further comprise sealing treatment (Sealing Treatment) step between second step and the 3rd step.
The siliceous protective membrane that coating process by the various embodiments described above forms can separate this aluminum component surface and extraneous contacting, thereby has prevented that effectively this aluminum component is faded by burn into pollution and surface.Owing to the siliceous protective membrane of this layer preferable surface quality is arranged in addition, thereby improved the surface quality of this aluminum component.
Claims (9)
1. aluminium part surface treating method is characterized in that this method may further comprise the steps:
(1) forms layer oxide film on the aluminum component surface by anode treatment method;
(2) carry out painted on the aluminum component surface that is formed with oxide film;
(3) aluminum component after painted is carried out coating film treatment.
2. aluminium part surface treating method as claimed in claim 1 is characterized in that: described aluminium part surface treating method comprises the sealing treatment step between aforementioned (2) step and (3) step.
3. aluminium part surface treating method as claimed in claim 2; it is characterized in that: described coating film treatment is that the aluminum component of painted mistake is inserted in the vacuum chamber; be provided with two electrodes in this vacuum chamber; two two air guide ports that are used for introducing working gas and one are used for the venting port of discharging waste gas and unreacting gas; described first electrode links to each other with a high frequency electric source; second electrode grounding; which is provided with the device that to place workpiece to be coated; during plated film; radio-frequency power supply is put between two electrodes; the working gas that imports from two air guide ports is converted into plasma body by action of radio between two electrodes, form the siliceous protective membrane of one deck thereby this plasma body on the aluminum component surface surface reaction takes place.
4. aluminium part surface treating method as claimed in claim 3 is characterized in that: described aluminum component is preheating to 100～200 ℃ before inserting vacuum chamber.
5. aluminium part surface treating method as claimed in claim 4 is characterized in that: in described two electrodes, first electrode links to each other with radio-frequency power supply, and second electrode is ground connection then, which is provided with the device of placing workpiece to be coated.
6. aluminium part surface treating method as claimed in claim 5, it is characterized in that: the radio-frequency power supply power that coating film treatment applied is 400～600W, the rf frequency that produces is 12～15MHz, and the pressure of this vacuum chamber is at 2Pa～150Pa, and the plated film time is 40～70 minutes.
7. aluminium part surface treating method as claimed in claim 6 is characterized in that: the working gas that described two air guide ports import respectively is a kind of silicon-containing gas and oxygen, and its airshed is respectively 0.5～2.5mm
3/ s and 3～5mm
3/ s, proportion is 2: 5 in working gas.
8. aluminium part surface treating method as claimed in claim 7 is characterized in that: described silicon-containing gas optionally is 1,1,1,3,3,3-hexamethyldisiloxane or 1,1,3,3-tetramethyl disiloxane.
9. aluminium part surface treating method as claimed in claim 1 is characterized in that: having the method for carrying out painted processing on the aluminum component of oxide film on the surface is one of natural hair color method, adsorption coloring method or electrocolor process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01129846 CN1239745C (en) | 2001-10-30 | 2001-10-30 | Aluminium part surface treating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01129846 CN1239745C (en) | 2001-10-30 | 2001-10-30 | Aluminium part surface treating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1417381A CN1417381A (en) | 2003-05-14 |
| CN1239745C true CN1239745C (en) | 2006-02-01 |
Family
ID=4669499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01129846 Expired - Fee Related CN1239745C (en) | 2001-10-30 | 2001-10-30 | Aluminium part surface treating method |
Country Status (1)
| Country | Link |
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| CN (1) | CN1239745C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464654C (en) * | 2004-03-11 | 2009-03-04 | 朱国光 | Method for making aluminium zipper with colorful galvanized coating |
| CN102834551B (en) * | 2011-03-08 | 2015-07-01 | 纳米及先进材料研发院有限公司 | Method for producing white anodized aluminum oxide |
| CN102582339A (en) * | 2012-01-18 | 2012-07-18 | 厦门建霖工业有限公司 | Method for carrying out two-color wire drawing and film coating on surface of aluminum alloy |
| CN103320830B (en) * | 2012-03-20 | 2016-08-17 | 比亚迪股份有限公司 | A kind of metallic composite and preparation method thereof |
| CN111286729B (en) * | 2020-03-09 | 2022-02-18 | 福建新峰科技有限公司 | High-precision and deep color changing process for copper product |
-
2001
- 2001-10-30 CN CN 01129846 patent/CN1239745C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1417381A (en) | 2003-05-14 |
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Foxconn precision components (Beijing) Co., Ltd. Assignor: Hongfujin Precision Industry (Shenzhen) Co., Ltd.|Hon Hai Precision Industry Co., Ltd. Contract fulfillment period: 2007.12.30 to 2013.12.30 contract change Contract record no.: 2009990000318 Denomination of invention: Aluminium part surface treating method Granted publication date: 20060201 License type: Exclusive license Record date: 2009.4.16 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.12.30 TO 2013.12.30; CHANGE OF CONTRACT Name of requester: FOXCONN PRECISION COMPONENT ( BEIJING ) CO., LTD. Effective date: 20090416 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060201 Termination date: 20141030 |
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| EXPY | Termination of patent right or utility model |