CN1920109A - Preparation technology for horniness anode oxide film of aluminium section bar - Google Patents
Preparation technology for horniness anode oxide film of aluminium section bar Download PDFInfo
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Abstract
The invention discloses the hard anodized film technology used for aluminium section bar. The technology uses composite electrolytic solution and special addition agent, can make the surface of the aluminium section bar form compact film at short time and high temperature, and gets hard anodized film. The invention shortens the producing time.
Description
Technical field
The present invention relates to the preparation technology of the hard anodized film of aluminium shape surface process field, particularly a kind of aluminium section bar.
Background technology
Though the hard anodizing of aluminium section bar has tended to ripe through years of development, but, all the time in the technology of Cai Yonging, electrolyte temperature all must maintain lower scope, is generally-5--5 ℃, consumes bigger cooling cost in the oxidation production process, especially carry out processing in south, cooling cost is high, and the hard anodic oxidation coating color and luster that obtains is gloomy partially, and decorative effect is relatively poor.
Summary of the invention
Deficiency at traditional hardening oxidation technology existence, the preparation technology who the purpose of this invention is to provide a kind of hard anodized film of aluminium section bar can carry out electrolysis under comparatively high temps, reduce the cooling cost that oxidation is produced, improve the decorative effect of aluminium section bar simultaneously, be adapted at industrial promoting the use of.
The present invention is achieved by the following technical solutions: a kind of preparation technology of hard anodized film of aluminium section bar is characterized in that: contain in the electrolytic solution that described hard anodizing adopts: sulfuric acid 250-350 grams per liter, oxalic acid 1-3 grams per liter, organic conductive agent M 10-20 grams per liter, organic conductive agent N 10-20 grams per liter; In the described hard anode oxidation process, electrolyte temperature is 15-20 ℃.
Described organic conductive agent M is oxalic dialdehyde acid or oxyacetic acid.
Described organic conductive agent N is glycerine or propanedioic acid.
Described hard anode oxidation process, current density are controlled at 2.5-3.5 ampere/square decimeter.
The technical solution used in the present invention is compared with existing aluminium section bar hard anodizing technology, have tangible progress and benefit: use conductive agent to make hard anodizing be able under higher temperature (can reach 15-20 ℃), carry out, both saved freezing cost, make the hard anodic oxidation coating of generation whiter again, brighter, good decorating effect, can use bigger current density in addition, thereby shorten the oxidation production time, enhance productivity.Technological operation of the present invention is simple and easy, and low production cost is suitable for promoting the use of.
Embodiment
The preparation technology of the hard anodized film of aluminium section bar of the present invention, technical process comprises: acid deoiling → alkaline corrosion → bright dipping → hard anodizing → normal temperature sealing.
Wherein, the main chemical compositions of acid deoiling solution is: sulfuric acid 50-100 grams per liter, OP-10 emulsifying agent: 5-10 grams per liter, processing requirements: normal temperature, 2-8 minute.
The main chemical compositions of alkaline corrosion solution is: sodium hydroxide 40-70 grams per liter, Sunmorl N 60S 5-15 grams per liter, processing requirements: 50-70 ℃, 6-15 minute.
The main chemical compositions of bright dipping solution is: nitric acid 150-200 grams per liter, sulfuric acid 20-50 grams per liter, processing requirements: normal temperature, 1-5 minute.
Contain in the electrolytic solution of hard anodizing: sulfuric acid 250-350 grams per liter, oxalic acid 1-3 grams per liter, organic conductive agent M 10-20 grams per liter, organic conductive agent N 10-20 grams per liter, processing requirements: hard anodizing cathode and anode surface area ratio is controlled at 1～2: 1, negative electrode adopts aluminium sheet, current density is controlled at 2.5-3.5 ampere/square decimeter, electrolyte temperature can be controlled in 15-20 ℃, handled 20-60 minute, and can make the aluminium surface obtain the anode oxide film of hardness 400-600Hv.The adding of conductive agent can be played homogeneous conductive, and help heat radiation and reduce the effect of burning film, wherein, preferred oxalic dialdehyde acid of organic conductive agent M or oxyacetic acid.Organic conductive agent N preferably glycerine or propanedioic acid.Add high current density and then can shorten the oxidation production time.
The main chemical compositions of normal temperature lock solution is: single nickel salt 4-5 grams per liter, rose vitriol 0.5-1.0 grams per liter, Sodium Fluoride 0.8-1.5 grams per liter, and the solution pH value is 5-6, processing requirements: normal temperature, handled 20-60 minute.
Embodiment 1
At first aluminum component is carried out acid deoiling successively, alkaline corrosion, bright dipping will be cleaned through pretreated aluminum component water then;
Be placed in the composite electrolytic solution of pre-configured hard anodizing, this electrolyte prescription is: sulfuric acid 290 grams per liters, oxalic acid 1.5 grams per liters, oxalic dialdehyde acid 13 grams per liters, glycerine 16 grams per liters, 17 ℃ of electrolyte temperatures, hard anodizing cathode and anode surface area ratio is 1: 1, negative electrode adopts aluminium sheet, 2.8 amperes/square decimeter of current densities.Anodizing time is 20-60 minute, and the hardness of gained hard anodized film can reach 400-600HV;
Last normal temperature sealing.
Embodiment 2
At first aluminum component is carried out acid deoiling successively, alkaline corrosion, bright dipping will be cleaned through pretreated aluminum component water then;
Be placed in the composite electrolytic solution of pre-configured hard anodizing, this electrolyte prescription is: sulfuric acid 270 grams per liters, oxalic acid 2.2 grams per liters, oxyacetic acid 16 grams per liters, propanedioic acid 14 grams per liters; 18 ℃ of electrolyte temperatures, hard anodizing cathode and anode surface area ratio are 3.1 amperes/square decimeter of 2: 1 current densities.Anodizing time is 20-60 minute, and the hardness of gained hard anodized film can reach 400-600HV;
Last normal temperature sealing.
Embodiment 3
At first aluminum component is carried out acid deoiling successively, alkaline corrosion, bright dipping will be cleaned through pretreated aluminum component water then;
Be placed in the composite electrolytic solution of pre-configured hard anodizing, this electrolyte prescription is: sulfuric acid 250 grams per liters, oxalic acid 3 grams per liters, oxalic dialdehyde acid 10 grams per liters, propanedioic acid 20 grams per liters, 20 ℃ of electrolyte temperatures, hard anodizing cathode and anode surface area ratio is 1: 1, negative electrode adopts aluminium sheet, 3.5 amperes/square decimeter of current densities.Anodizing time is 20-60 minute, and the hardness of gained hard anodized film can reach 400-600HV;
Last normal temperature sealing.
Embodiment 4
At first aluminum component is carried out acid deoiling successively, alkaline corrosion, bright dipping will be cleaned through pretreated aluminum component water then;
Be placed in the composite electrolytic solution of pre-configured hard anodizing, this electrolyte prescription is: sulfuric acid 350 grams per liters, oxalic acid 1 grams per liter, oxyacetic acid 20 grams per liters, glycerine 10 grams per liters; 15 ℃ of electrolyte temperatures, hard anodizing cathode and anode surface area ratio are 2.5 amperes/square decimeter of 2: 1 current densities.Anodizing time is 20-60 minute, and the hardness of gained hard anodized film can reach 400-600HV;
Last normal temperature sealing.
Claims (10)
1, a kind of preparation technology of hard anodized film of aluminium section bar is characterized in that:
---contain in the electrolytic solution that described hard anodizing adopts: sulfuric acid 250-350 grams per liter, oxalic acid 1-3 grams per liter, organic conductive agent M 10-20 grams per liter, organic conductive agent N10-20 grams per liter;
---in the described hard anode oxidation process, electrolyte temperature is 15-20 ℃.
2, the preparation technology of aluminium section bar hard anodized film according to claim 1 is characterized in that: described organic conductive agent M is oxalic dialdehyde acid or oxyacetic acid.
3, the preparation technology of aluminium section bar hard anodized film according to claim 1 is characterized in that: described organic conductive agent N is glycerine or propanedioic acid.
4, the preparation technology of the hard anodized film of aluminium section bar according to claim 1 is characterized in that: in the described hard anode oxidation process, current density is controlled at 2.5-3.5 ampere/square decimeter.
5, the preparation technology of the hard anodized film of aluminium section bar according to claim 1 is characterized in that: described hard anode oxidation process, and hard anodizing cathode and anode surface area ratio is controlled to be 1～2: 1, what negative electrode adopted is aluminium sheet.
6, the preparation technology of the hard anodized film of aluminium section bar according to claim 1 is characterized in that: the pre-treatment of described aluminium section bar before hard anodizing comprises acid deoiling, alkaline corrosion and bright dipping.
7, the preparation technology of the hard of aluminium section bar according to claim 6 resistance utmost point oxide film, it is characterized in that: the main chemical compositions of described acid deoiling treatment solution is: sulfuric acid 50-100 grams per liter, OP-10 emulsifying agent 5-10 grams per liter, normal temperature was handled 2-8 minute down.
8, the preparation technology of the hard anodized film of aluminium section bar according to claim 6, it is characterized in that: the main chemical compositions of described alkaline corrosion treatment solution is: sodium hydroxide 40-70 grams per liter, Sunmorl N 60S 5-15 grams per liter, handled 6-15 minute down for 50-70 ℃.
9, the preparation technology of the hard anodized film of aluminium section bar according to claim 6 is characterized in that: the main chemical compositions of described bright dipping treatment solution is: nitric acid 150-200 grams per liter, sulfuric acid 20-50 grams per liter, normal temperature was handled 1-5 minute down.
10, the preparation technology of the hard anodized film of aluminium section bar according to claim 1, it is characterized in that: described hard anodizing carries out the normal temperature sealing treatment after forming oxide film, the main chemical compositions of confining liquid is: single nickel salt 4-5 grams per liter, rose vitriol 0.5-1.0 grams per liter, Sodium Fluoride 0.8-1.5 grams per liter, solution pH value 5-6 handled 20-60 minute at normal temperatures.
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| CN200610036677A CN100585023C (en) | 2006-07-25 | 2006-07-25 | Preparation technology for hard anode oxide film of aluminum section bar |
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| CN200610036677A CN100585023C (en) | 2006-07-25 | 2006-07-25 | Preparation technology for hard anode oxide film of aluminum section bar |
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| CN100585023C CN100585023C (en) | 2010-01-27 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787340A (en) * | 2012-08-07 | 2012-11-21 | 重庆万力联兴实业(集团)有限公司 | Aluminium alloy hard anodizing electrolyte |
| CN102888641A (en) * | 2011-07-18 | 2013-01-23 | 汉达精密电子(昆山)有限公司 | Aluminium alloy hard anodizing electrolyte and method |
| CN103451702A (en) * | 2013-08-13 | 2013-12-18 | 河南辉龙铝业股份有限公司 | Aluminum profile anodizing method |
| US20150255253A1 (en) * | 2012-10-17 | 2015-09-10 | Constellium France | Vacuum chamber elements made of aluminum alloy |
| CN106400082A (en) * | 2016-12-14 | 2017-02-15 | 玉林师范学院 | Preparation technology of aluminum alloy with surface provided with high-hardness anode oxide film |
| CN107287641A (en) * | 2016-03-31 | 2017-10-24 | 比亚迪股份有限公司 | A kind of method of anodic oxidation of magnetism alloy liquid, preparation method and anodic oxidation of magnetism alloy |
| CN107937953A (en) * | 2017-12-12 | 2018-04-20 | 北京小米移动软件有限公司 | Al-alloy casing and preparation method thereof |
| CN108239777A (en) * | 2018-03-15 | 2018-07-03 | 南京煜京光电仪器有限公司 | A kind of anode oxidation process for lens barrel processing |
| CN108788059A (en) * | 2018-05-30 | 2018-11-13 | 苏州阜丰实业有限公司 | A kind of processing technology of anemobiagraph |
| CN114351209A (en) * | 2021-12-10 | 2022-04-15 | 辽沈工业集团有限公司 | Normal-temperature low-voltage hard anodizing process method for aluminum alloy |
-
2006
- 2006-07-25 CN CN200610036677A patent/CN100585023C/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888641A (en) * | 2011-07-18 | 2013-01-23 | 汉达精密电子(昆山)有限公司 | Aluminium alloy hard anodizing electrolyte and method |
| CN102888641B (en) * | 2011-07-18 | 2015-09-30 | 汉达精密电子(昆山)有限公司 | Hard Anodic Oxidation of Aluminum Alloy electrolytic solution and method |
| CN102787340A (en) * | 2012-08-07 | 2012-11-21 | 重庆万力联兴实业(集团)有限公司 | Aluminium alloy hard anodizing electrolyte |
| US20150255253A1 (en) * | 2012-10-17 | 2015-09-10 | Constellium France | Vacuum chamber elements made of aluminum alloy |
| CN103451702A (en) * | 2013-08-13 | 2013-12-18 | 河南辉龙铝业股份有限公司 | Aluminum profile anodizing method |
| CN107287641A (en) * | 2016-03-31 | 2017-10-24 | 比亚迪股份有限公司 | A kind of method of anodic oxidation of magnetism alloy liquid, preparation method and anodic oxidation of magnetism alloy |
| CN107287641B (en) * | 2016-03-31 | 2019-04-19 | 比亚迪股份有限公司 | A kind of method of anodic oxidation of magnetism alloy liquid, preparation method and anodic oxidation of magnetism alloy |
| CN106400082A (en) * | 2016-12-14 | 2017-02-15 | 玉林师范学院 | Preparation technology of aluminum alloy with surface provided with high-hardness anode oxide film |
| CN107937953A (en) * | 2017-12-12 | 2018-04-20 | 北京小米移动软件有限公司 | Al-alloy casing and preparation method thereof |
| CN108239777A (en) * | 2018-03-15 | 2018-07-03 | 南京煜京光电仪器有限公司 | A kind of anode oxidation process for lens barrel processing |
| CN108788059A (en) * | 2018-05-30 | 2018-11-13 | 苏州阜丰实业有限公司 | A kind of processing technology of anemobiagraph |
| CN114351209A (en) * | 2021-12-10 | 2022-04-15 | 辽沈工业集团有限公司 | Normal-temperature low-voltage hard anodizing process method for aluminum alloy |
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| Publication number | Publication date |
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| CN100585023C (en) | 2010-01-27 |
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