CN1632178A - Method and apparatus for rapid preparation of anodic oxidation film on aluminium alloy products - Google Patents
Method and apparatus for rapid preparation of anodic oxidation film on aluminium alloy products Download PDFInfo
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- CN1632178A CN1632178A CN 200410067939 CN200410067939A CN1632178A CN 1632178 A CN1632178 A CN 1632178A CN 200410067939 CN200410067939 CN 200410067939 CN 200410067939 A CN200410067939 A CN 200410067939A CN 1632178 A CN1632178 A CN 1632178A
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Abstract
A method and an apparatus for rapid preparation of an anodic oxidation film on an aluminium alloy product, are provided, characterised in that: the aluminium alloy product is hung on an upper portion of a housing, the aluminium alloy product is used as an anode, 15-30% vitriol is used as an electrolyte which is sprayed from a plurality of nozzles on tubes at two sides of the anode, passed through an auxiliary cathode and continuously sprayed on the anode to form the anodic oxidation film; a voltage between the anode and the auxiliary cathode is 20-30V, a current density of the anode is 3-5 A/dm2, an electrolyte temperature is 20-30 DEG C. Compared with a current technic, the invention has following eximious advantages: 1) a film forming speed of the anodic oxidation film is 1.0-2.2 mu m per minute; 2) a thickness of the anodic oxidation film is 1-4 mu m, and a corrosion resistance is better than a chemical oxidation film; 3) an anodic oxidation current density is 3-5 A/dm2, and is increased by 3-5 times, can satisfy a production request that the anodic oxidation film is rapidly formed before coating and packaging the aluminium alloy product.
Description
Technical field
The present invention relates to the method and apparatus of the preceding anodic oxidation treatment of a kind of aluminum or aluminum alloy goods application, particularly a kind of method and apparatus that on Al-alloy products, prepares anode oxide film fast.
Background technology
For improving the erosion resistance of Al-alloy products, before the Al-alloy products application, must carry out oxide treatment, on Al-alloy products, form layer oxide film.Originally, people adopt chromic salt chemistry method for oxidation, obtain oxide film on Al-alloy products, and thickness is less than 4 μ m, and the quality softness is not wear-resisting; There is the people in treatment soln, to add chemical reagent such as containing chromic acid and potassium bichromate subsequently, obtains oxide film, improve its thickness with spraying method.The defective of such scheme is that the sexavalent chrome in the chromic salt has toxicity, is unfavorable for environment protection.
In order to eliminate chromic harmful effect, adopt the seventies in 20th century chemical conversion of complete Chrome-free to handle scheme, with chromic acid, nitric acid, boric acid is that basic components prepares oxide film on Al-alloy products, improves ADHESION OF PAINTS, and uses on aluminium pop can.But erosion resistance and tack to coating require can't apply than higher automobile industry and construction industry.Adopt the eighties in 20th century titanium phosphate-zirconium phosphate solution to generate oxide film, use properties increases, but still can not reach service requirements fully, 100% adopt the Chrome-free conversion film to the aluminium pot industry of the mid-90 Europe, but the application aspect the building aluminium is still less than 25%; In order to solve the oxide treatment problem before construction industry aluminium and the application of automobile industry aluminium, in Chrome-free chemical conversion solution, add organic component, as silane, cerate etc., this new chromium-free treatment technology is among the exploitation at present, and this treatment process can't satisfy the requirement for preparing anode oxide film before construction industry aluminium and the application of automobile industry aluminium so far.
Summary of the invention
The object of the present invention is to provide a kind of method and apparatus that on Al-alloy products, prepares anode oxide film fast, with the Al-alloy products is anode, sulfuric acid with 15～30% is electrolytic solution, a plurality of nozzles from the pipeline that is installed in the auxiliary cathode outside spray, continuously be injected on the anode after passing auxiliary cathode, on anode, form the anode oxide film that one deck meets service requirements, solved the technical barrier that on Al-alloy products, prepares anode oxide film fast.
A kind of method that on Al-alloy products, prepares anode oxide film fast, contain electrolytic solution, anode, auxiliary cathode is characterized in that: Al-alloy products is suspended on the top of housing, is anode with this Al-alloy products, sulfuric acid with 15～30% is electrolytic solution, this electrolytic solution is from being positioned at a plurality of nozzles ejection on the anode pipelines on two sides, continuously is ejected on the anode after passing auxiliary cathode, forms anode oxide film; Voltage between auxiliary cathode 7 and the anode 6 is 20～30V, and oxidation current density is 3～5A/dm
2, electrolyte temperature is 20～30 ℃.
A kind of equipment of implementing aforesaid method, comprise housing 1, the reservoir 2 of electrolytic solution is housed, well heater 3, pipeline 4, pump 5, anode 6, auxiliary cathode 7 is characterized in that: be anode 6 with the Al-alloy products, hang and be positioned at the top of housing 1 by hook, auxiliary cathode 7 is arranged in the both sides of anode 6, is positioned on the pipeline 4 in auxiliary cathode 7 outsides a plurality of nozzles 8 are housed, and the electrolytic solution in the reservoir 2 is delivered to the nozzle place by pump 5 and pipeline 4, after the electrolyte cross auxiliary cathode 7 of nozzle 8 ejections, continuously be injected on the anode 6, be respectively equipped with vent fan 9 and flow deflector 10 in the above and below of anode 6; Spacing between nozzle 8 and the anode 6 is 250～300mm, and the spacing between auxiliary cathode 7 and the anode 6 is 100mm, and the voltage between auxiliary cathode 7 and the anode 6 is 20～30V, is electrolytic solution with 15～30% sulfuric acid, and its working temperature is 20～30 ℃.Well heater 3, auxiliary cathode 7, vent fan 9, flow deflector 10 are fixed on the housing 1.
For adapting to requirements of large-scale production, this equipment can adopt jet-type stretched wire structure for conveying, be divided into several surface treatment intervals, workpiece in each interval moves at the uniform velocity, the both sides of workpiece dispose corresponding auxiliary cathode, nozzle respectively, filming condition is identical with such scheme, uses the anode oxide film continuous automatic production that this suite of equipment is realized Al-alloy products.
With prior art relatively, outstanding advantage of the present invention is: 1) the anode oxide film film forming speed is per minute 1.0～2.2 μ m, and is higher 4～8 times than the film forming speed of routine; 2) the anodic oxidation film thickness is 1～4 μ m, and erosion resistance is better than chemical oxide film, and neutral salt spray test reached more than 400 hours; 3) oxidation current density is 3～5A/dm
2, improve 3～5 times, can satisfy the preceding suitability for industrialized production requirement that forms anode oxide film fast of Al-alloy products application.
Description of drawings
Fig. 1 is the device structure synoptic diagram for preparing anode oxide film on Al-alloy products fast.
Embodiment
Embodiment 1:
A kind of equipment that on the aluminium wheel hub, prepares anode oxide film fast, with the aluminium wheel hub is anode 6, hang and be positioned at the top of housing 1 by hook, auxiliary cathode 7 is arranged in the both sides of anode 6, be positioned on the pipeline 4 in auxiliary cathode 7 outsides a plurality of nozzles 8 are housed, electrolytic solution in the reservoir 2 is delivered to the nozzle place by pump 5 and pipeline 4, after the electrolyte cross auxiliary cathode 7 of nozzle 8 ejections, continuously be injected on the anode 6, be respectively equipped with vent fan 9 and flow deflector 10 in the above and below of anode 6; Spacing between nozzle 8 and the anode 6 is 250mm, spacing between auxiliary cathode 7 and the anode 6 is 100mm, and the voltage between auxiliary cathode 7 and the anode 6 is 20, and auxiliary cathode 7 adopts the titanium net that is coated with plumbic oxide, with 15% sulfuric acid is electrolytic solution, and its working temperature is 20 ℃.This equipment of application, the anode oxide film that forms on the aluminium wheel hub meets practical requirement.
Embodiment 2:
A kind of equipment that on the aluminium wheel hub, prepares anode oxide film fast, with the aluminium wheel hub is anode 6, hang and be positioned at the top of housing 1 by hook, auxiliary cathode 7 is arranged in the both sides of anode 6, be positioned on the pipeline 4 in auxiliary cathode 7 outsides a plurality of nozzles 8 are housed, electrolytic solution in the reservoir 2 is delivered to the nozzle place by pump 5 and pipeline 4, after the electrolyte cross auxiliary cathode 7 of nozzle 8 ejections, continuously be injected on the anode 6, be respectively equipped with vent fan 9 and flow deflector 10 in the above and below of anode 6; Spacing between nozzle 8 and the anode 6 is 300mm, spacing between auxiliary cathode 7 and the anode 6 is 100mm, and the voltage between auxiliary cathode 7 and the anode 6 is 30V, and auxiliary cathode 7 adopts the titanium net that is coated with plumbic oxide, with 30% sulfuric acid is electrolytic solution, and its working temperature is 30 ℃.This equipment of application, the anode oxide film that forms on the aluminium wheel hub meets practical requirement.
Embodiment 3:
A kind of equipment that on aluminium alloy decoration plate, prepares anode oxide film fast, with the aluminium alloy decoration plate is anode 6, hang and be positioned at the top of housing 1 by hook, auxiliary cathode 7 is arranged in the both sides of anode 6, be positioned on the pipeline 4 in auxiliary cathode 7 outsides a plurality of nozzles 8 are housed, electrolytic solution in the reservoir 2 is delivered to the nozzle place by pump 5 and pipeline 4, after the electrolyte cross auxiliary cathode 7 of nozzle 8 ejections, continuously be injected on the anode 6, be respectively equipped with vent fan 9 and flow deflector 10 in the above and below of anode 6; Spacing between nozzle 8 and the anode 6 is 275mm, and the spacing between auxiliary cathode 7 and the anode 6 is 100mm, and the voltage between auxiliary cathode 7 and the anode 6 is 25V, is electrolytic solution with 20% sulfuric acid, and its working temperature is 25 ℃.
Claims (3)
1. method that on Al-alloy products, prepares fast anode oxide film, contain electrolytic solution, anode, auxiliary cathode is characterized in that: Al-alloy products is suspended on the top of housing, is anode with this Al-alloy products, sulfuric acid with 15～30% is electrolytic solution, this electrolytic solution is from being positioned at a plurality of nozzles ejection on the anode pipelines on two sides, continuously is ejected on the anode after passing auxiliary cathode, forms anode oxide film; Voltage between auxiliary cathode (7) and the anode (6) is 20～30V, and oxidation current density is 3～5A/d m
2, electrolyte temperature is 20～30 ℃.
2. equipment of implementing the described method of claim 1, comprise housing (1), the reservoir (2) of electrolytic solution is housed, well heater (3), pipeline (4), pump (5), anode (6), auxiliary cathode (7), it is characterized in that: be anode (6) with the Al-alloy products, hang and be positioned at the top of housing (1) by hook, auxiliary cathode (7) is arranged in the both sides of anode (6), is positioned on the pipeline (4) in auxiliary cathode (7) outside a plurality of nozzles (8) are housed, and the electrolytic solution in the reservoir (2) is delivered to the nozzle place by pump (5) and pipeline (4), after the electrolyte cross auxiliary cathode (7) of nozzle (8) ejection, continuously be injected on the anode (6), be respectively equipped with vent fan (9) and flow deflector (10) in the above and below of anode (6).
3. equipment according to claim 2, it is characterized in that: the spacing between nozzle (8) and the anode (6) is 250～300mm, spacing between auxiliary cathode (7) and the anode (6) is 100mm, voltage between auxiliary cathode (7) and the anode (6) is 20～30V, with 15～30% sulfuric acid is electrolytic solution, and its working temperature is 20～30 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100679396A CN100335682C (en) | 2004-11-05 | 2004-11-05 | Method and apparatus for rapid preparation of anodic oxidation film on aluminium alloy products |
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| CNB2004100679396A CN100335682C (en) | 2004-11-05 | 2004-11-05 | Method and apparatus for rapid preparation of anodic oxidation film on aluminium alloy products |
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| CN1632178A true CN1632178A (en) | 2005-06-29 |
| CN100335682C CN100335682C (en) | 2007-09-05 |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565846B (en) * | 2009-06-01 | 2011-05-11 | 燕山大学 | Interelectrode relative movement type plasma electrolysis oxidation process |
| CN102444576A (en) * | 2011-12-31 | 2012-05-09 | 史晨星 | Water pump |
| CN102719870A (en) * | 2012-07-04 | 2012-10-10 | 石家庄金刚凯源动力科技有限公司 | Flow rotating combined device for micro-arc oxidation |
| CN102970782A (en) * | 2012-12-08 | 2013-03-13 | 江苏第一金合金有限公司 | Electric heating device |
| CN104404591A (en) * | 2014-11-27 | 2015-03-11 | 佳木斯大学 | Micro-arc oxidation device for improving film thickness evenness and energy utilizing rate based on separate type compensation cathode |
| CN104726918A (en) * | 2015-03-09 | 2015-06-24 | 张小可 | Spray-type nonferrous metal surface treatment technique and device |
| CN105821460A (en) * | 2016-05-17 | 2016-08-03 | 王才照 | Precision hard anodizing method and device for oilless compressor scroll plate |
| CN110129853A (en) * | 2018-02-02 | 2019-08-16 | 本田技研工业株式会社 | Anode oxide film forms inorganic agent and anode oxide film forming method |
| CN110396814A (en) * | 2019-08-13 | 2019-11-01 | 北京理工大学 | The method and device of the anodized carbon fiber of plasma enhancing |
| CN111621829A (en) * | 2020-05-22 | 2020-09-04 | 范语楠 | Method and equipment for ceramic surface treatment of aluminum alloy with high Cu content and/or Si content |
| CN112174112A (en) * | 2020-11-08 | 2021-01-05 | 赵伟 | Preparation method of nano rod-shaped carbon material |
| CN112279645A (en) * | 2020-11-08 | 2021-01-29 | 赵伟 | Preparation method of rod-shaped carbon anode material |
| US11111594B2 (en) | 2015-01-09 | 2021-09-07 | Apple Inc. | Processes to reduce interfacial enrichment of alloying elements under anodic oxide films and improve anodized appearance of heat treatable alloys |
| US11242614B2 (en) | 2017-02-17 | 2022-02-08 | Apple Inc. | Oxide coatings for providing corrosion resistance on parts with edges and convex features |
| CN114059130A (en) * | 2021-12-30 | 2022-02-18 | 北京星航机电装备有限公司 | Micro-arc oxidation device and method for titanium alloy special-shaped cylinder part |
| US11352708B2 (en) | 2016-08-10 | 2022-06-07 | Apple Inc. | Colored multilayer oxide coatings |
| US11549191B2 (en) | 2018-09-10 | 2023-01-10 | Apple Inc. | Corrosion resistance for anodized parts having convex surface features |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA785463B (en) * | 1978-09-26 | 1980-01-30 | Anglo Amer Corp South Africa | Metal recovery |
| JPS5944400B2 (en) * | 1981-03-30 | 1984-10-29 | 良一 富永 | Flow anodizing treatment method for aluminum or its alloy |
| JPH11117092A (en) * | 1997-10-09 | 1999-04-27 | Honda Motor Co Ltd | Anodically oxidized film device |
| JP2004059936A (en) * | 2002-07-24 | 2004-02-26 | Aisin Keikinzoku Co Ltd | Surface treatment apparatus for aluminum alloy |
-
2004
- 2004-11-05 CN CNB2004100679396A patent/CN100335682C/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565846B (en) * | 2009-06-01 | 2011-05-11 | 燕山大学 | Interelectrode relative movement type plasma electrolysis oxidation process |
| CN102444576A (en) * | 2011-12-31 | 2012-05-09 | 史晨星 | Water pump |
| CN102719870A (en) * | 2012-07-04 | 2012-10-10 | 石家庄金刚凯源动力科技有限公司 | Flow rotating combined device for micro-arc oxidation |
| CN102719870B (en) * | 2012-07-04 | 2014-11-12 | 石家庄金刚凯源动力科技有限公司 | Flow rotating combined device for micro-arc oxidation |
| CN102970782A (en) * | 2012-12-08 | 2013-03-13 | 江苏第一金合金有限公司 | Electric heating device |
| CN104404591A (en) * | 2014-11-27 | 2015-03-11 | 佳木斯大学 | Micro-arc oxidation device for improving film thickness evenness and energy utilizing rate based on separate type compensation cathode |
| US11111594B2 (en) | 2015-01-09 | 2021-09-07 | Apple Inc. | Processes to reduce interfacial enrichment of alloying elements under anodic oxide films and improve anodized appearance of heat treatable alloys |
| CN104726918A (en) * | 2015-03-09 | 2015-06-24 | 张小可 | Spray-type nonferrous metal surface treatment technique and device |
| CN105821460A (en) * | 2016-05-17 | 2016-08-03 | 王才照 | Precision hard anodizing method and device for oilless compressor scroll plate |
| CN105821460B (en) * | 2016-05-17 | 2018-06-26 | 东莞市容邦尚电子科技有限公司 | Oilless (oil free) compressor scroll plate precision Hard anode oxidation method and device |
| US11352708B2 (en) | 2016-08-10 | 2022-06-07 | Apple Inc. | Colored multilayer oxide coatings |
| US11242614B2 (en) | 2017-02-17 | 2022-02-08 | Apple Inc. | Oxide coatings for providing corrosion resistance on parts with edges and convex features |
| CN110129853A (en) * | 2018-02-02 | 2019-08-16 | 本田技研工业株式会社 | Anode oxide film forms inorganic agent and anode oxide film forming method |
| US11549191B2 (en) | 2018-09-10 | 2023-01-10 | Apple Inc. | Corrosion resistance for anodized parts having convex surface features |
| CN110396814A (en) * | 2019-08-13 | 2019-11-01 | 北京理工大学 | The method and device of the anodized carbon fiber of plasma enhancing |
| CN111621829A (en) * | 2020-05-22 | 2020-09-04 | 范语楠 | Method and equipment for ceramic surface treatment of aluminum alloy with high Cu content and/or Si content |
| CN112174112A (en) * | 2020-11-08 | 2021-01-05 | 赵伟 | Preparation method of nano rod-shaped carbon material |
| CN112279645A (en) * | 2020-11-08 | 2021-01-29 | 赵伟 | Preparation method of rod-shaped carbon anode material |
| CN112279645B (en) * | 2020-11-08 | 2023-06-09 | 衢州市衢发瑞新能源材料有限公司 | Preparation method of carbon electrode material |
| CN112174112B (en) * | 2020-11-08 | 2023-11-03 | 赵伟 | Preparation method of nano rod-shaped carbon material |
| CN114059130A (en) * | 2021-12-30 | 2022-02-18 | 北京星航机电装备有限公司 | Micro-arc oxidation device and method for titanium alloy special-shaped cylinder part |
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| CN100335682C (en) | 2007-09-05 |
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