CN104630778A - Method for polishing and brightening aluminum alloy - Google Patents
Method for polishing and brightening aluminum alloy Download PDFInfo
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- CN104630778A CN104630778A CN201510046787.XA CN201510046787A CN104630778A CN 104630778 A CN104630778 A CN 104630778A CN 201510046787 A CN201510046787 A CN 201510046787A CN 104630778 A CN104630778 A CN 104630778A
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Abstract
The invention discloses a method for polishing and brightening an aluminum alloy. The method comprises the following steps: S1, aluminum alloy surface pretreatment, namely treating the aluminum alloy surface by use of a denaturing agent, next, washing with water, and then treating the aluminum alloy surface by use of a nonionic detergent and washing with water; S2, aluminum alloy surface luster-preserving oxidization treatment, namely treating by use of the mixed solution of nitric acid, chromic anhydride, ferric nitrate and water at a normal temperature for 5-10 minutes, and washing with water after treatment; S3, aluminum alloy surface brightening treatment by use of a brightener which is composed of sodium allysulfonate, benzalacetone, diphenylsulfonyl imine, polyethylene glycol and water; S4, airing for 5-10 minutes and then drying at a temperature ranging from 180 to 200 DEG C. The surface mechanical cracks of the aluminum alloy treated by use of the method are reduced, and the brightness of the aluminum alloy is obviously improved.
Description
Technical field
The present invention relates to field of aluminum alloys, more specifically, relate to a kind of method of aluminium alloy bright levelling.
Background technology
Aluminium alloy acid corrosion removes the many advantages such as mechanical line ability is strong, dusting fast, aluminium consumption is low with it, replaces rapidly caustic corrosion, becomes the main flow production technique of current aluminium alloy anode oxide pre-treatment.But from the method is promoted certainly, the problem of aluminium material surface obfuscation troubles manufacturer, also have impact on product specification always.In order to overcome above-mentioned defect, most of producer is equipped with alkaline etching groove and ash cleaning slot after acid etching groove, to remove acid etching ash.Nonetheless, acid etching material is still much dark than alkaline etching material, does not deal with problems at all.In addition, the acid etching ash making Surface of profile shade is plain stubborn, even if through alkaline etching groove, light output groove and oxidation trough, can not remove completely, still can bring painted groove and electrophoresis chamber into, make painted material dust, the shrinkage cavity of electrophoresis material, many aluminum material factories have to reactivate alkali groove.
Summary of the invention
The object of the invention is to improve the luminance brightness of aluminum alloy surface, for a good pre-treatment is done in anodic oxidation below.
The invention provides a kind of method of aluminium alloy bright levelling, comprise the following steps
S1. aluminum alloy surface pre-treatment:
Use denaturing agent process aluminum alloy surface, then wash, then by non-ionic octoxynol detergent process aluminum alloy surface, then wash,
S2. aluminum alloy surface protects photoxidation process:
With the mixed solution process of nitric acid, chromic anhydride, iron nitrate and water; Working temperature is normal temperature, treatment time 5-10 minute; With water cleaning after processing,
S3. aluminum alloy surface is added lustre to process:
Add optical brightener, soak 20 ~ 30 minutes,
Described optical brightener is made up of following, by weight:
S4. after drying in the air 5 ~ 10 minutes, 180-200 DEG C of oven dry.、
Described denaturing agent is SDS, urea or guanidinesalt.
Described non-ionic octoxynol detergent is polyethylene glycols neutral detergent.
Described optical brightener is made up of following, by weight:
The concentration of described nitric acid in mixed solution is 200-300g/L, and the concentration of chromic anhydride in mixed solution is 50-70g/L, and the concentration of iron nitrate in mixed solution is 4-6g/L.
The soak time of described aluminium alloy in denaturing agent is 10 minutes, and the time that described aluminium alloy soaks in non-ionic octoxynol detergent is 15 minutes.
The invention has the advantages that:
Product of the present invention is when aluminum alloy surface process, and it goes the works very well of mechanical line and surface spots, and while removal mechanical line and surface spots, can, effectively to aluminum alloy surface blast, be applicable to very much applying.
Embodiment
The present invention is further described below in conjunction with specific embodiment.Unless stated otherwise, the present invention adopts reagent, equipment and method are conventional commercial reagent, equipment and the conventional method used of the art.
Embodiment 1
A method for aluminium alloy bright levelling, comprises the following steps
S1. aluminum alloy surface pre-treatment:
Be 10 minutes by the soak time of aluminium alloy in guanidinesalt, then wash, the time of soaking in PEG400 is afterwards 15 minutes, washing
S2. aluminum alloy surface protects photoxidation process:
Carry out guarantor's photoxidation process of aluminum alloy surface with the mixing solutions of nitric acid, chromic anhydride, iron nitrate, the concentration of nitric acid is 200g/L, and the concentration of chromic anhydride is 70g/L, and the concentration of iron nitrate in mixed solution is 4g/L; Working temperature is normal temperature, treatment time 5-10 minute; With water cleaning after processing,
S3. aluminum alloy surface is added lustre to process:
Add optical brightener, soak 30 minutes,
Described optical brightener is made up of following, by weight:
Embodiment 2
A method for aluminium alloy bright levelling, comprises the following steps
S1. aluminum alloy surface pre-treatment:
Be 10 minutes by the soak time of aluminium alloy in urea, then wash, the time of soaking in PEG200 is afterwards 15 minutes, washing,
S2. aluminum alloy surface protects photoxidation process:
Carry out guarantor's photoxidation process of aluminum alloy surface with the mixing solutions of nitric acid, chromic anhydride, iron nitrate, the concentration of nitric acid is 300g/L, and the concentration of chromic anhydride is 50g/L, and the concentration of iron nitrate in mixed solution is 6g/L; Working temperature is normal temperature, treatment time 5-10 minute; With water cleaning after processing,
S3. aluminum alloy surface is added lustre to process:
Add optical brightener, soak 25 minutes,
Described optical brightener is made up of following, by weight:
Embodiment 3
A method for aluminium alloy bright levelling, comprises the following steps
S1. aluminum alloy surface pre-treatment:
Be 10 minutes by the soak time of aluminium alloy in SDS, then wash, the time of soaking in PEG200 is afterwards 15 minutes, washing,
S2. aluminum alloy surface protects photoxidation process:
Carry out guarantor's photoxidation process of aluminum alloy surface with the mixing solutions of nitric acid, chromic anhydride, iron nitrate, the concentration of nitric acid is 300g/L, and the concentration of chromic anhydride is 60g/L, and the concentration of iron nitrate in mixed solution is 5g/L; Working temperature is normal temperature, treatment time 5-10 minute; With water cleaning after processing,
S3. aluminum alloy surface is added lustre to process:
Add optical brightener, soak 25 minutes,
Described optical brightener is made up of following, by weight:
Compare before the aluminium alloy that observation embodiment 1,2 and 3 obtains and its process, find that surperficial mechanical line reduces, surface is indefectible, and luminance brightness improves obvious.
Claims (6)
1. a method for aluminium alloy bright levelling, is characterized in that, comprises the following steps
S1. aluminum alloy surface pre-treatment:
Use denaturing agent process aluminum alloy surface, then wash, then by non-ionic octoxynol detergent process aluminum alloy surface, then wash,
S2. aluminum alloy surface protects photoxidation process:
With the mixed solution process of nitric acid, chromic anhydride, iron nitrate and water; Working temperature is normal temperature, treatment time 5-10 minute; With water cleaning after processing,
S3. aluminum alloy surface is added lustre to process:
Add optical brightener, soak 20-30 minute,
Described optical brightener is made up of following, by weight:
Sodium allyl sulfonate 1 ~ 2 part
BENZALACETONE 15 ~ 30 parts
Dibenzenesulfonyl imines 11 ~ 17 parts
Polyoxyethylene glycol 7 ~ 9 parts
800 ~ 1000 parts, water,
S4. after drying in the air 5 ~ 10 minutes, 180-200 DEG C of oven dry.
2. the method for aluminium alloy bright levelling according to claim 1, is characterized in that, described denaturing agent is SDS, urea or guanidinesalt.
3. the method for aluminium alloy bright levelling according to claim 1, is characterized in that, described non-ionic octoxynol detergent is polyethylene glycols neutral detergent.
4. the method for aluminium alloy bright levelling according to claim 1, is characterized in that, described optical brightener is made up of following, by weight:
Sodium allyl sulfonate 2 parts
BENZALACETONE 27 parts
Dibenzenesulfonyl imines 15 parts
Polyoxyethylene glycol 9 parts
1000 parts, water.
5. the method for aluminium alloy bright levelling according to claim 1, is characterized in that, the concentration of described nitric acid in mixed solution is 200-300g/L, and the concentration of chromic anhydride in mixed solution is 50-70g/L, and the concentration of iron nitrate in mixed solution is 4-6g/L.
6. the method for aluminium alloy bright levelling according to claim 1, is characterized in that, the soak time of described aluminium alloy in denaturing agent is 10 minutes, and the time that described aluminium alloy soaks in non-ionic octoxynol detergent is 15 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510046787.XA CN104630778A (en) | 2015-01-29 | 2015-01-29 | Method for polishing and brightening aluminum alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510046787.XA CN104630778A (en) | 2015-01-29 | 2015-01-29 | Method for polishing and brightening aluminum alloy |
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| CN104630778A true CN104630778A (en) | 2015-05-20 |
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| CN201510046787.XA Pending CN104630778A (en) | 2015-01-29 | 2015-01-29 | Method for polishing and brightening aluminum alloy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042395A (en) * | 2019-03-27 | 2019-07-23 | 祝亚琴 | Aluminium polishing additive |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06158358A (en) * | 1992-11-20 | 1994-06-07 | Nippon Avionics Co Ltd | Deburring solution of aluminum alloy and precision deburring method |
| CN1970840A (en) * | 2005-11-23 | 2007-05-30 | 熊映明 | Chemical sanding smokeless-polishing technology for aluminium alloy |
| CN103361646A (en) * | 2013-07-02 | 2013-10-23 | 天长市京发铝业有限公司 | Chemical polishing solution for aluminum and aluminum alloy |
| CN104141134A (en) * | 2014-07-28 | 2014-11-12 | 成都派莱克科技有限公司 | Zinc alloy brightener |
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2015
- 2015-01-29 CN CN201510046787.XA patent/CN104630778A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06158358A (en) * | 1992-11-20 | 1994-06-07 | Nippon Avionics Co Ltd | Deburring solution of aluminum alloy and precision deburring method |
| CN1970840A (en) * | 2005-11-23 | 2007-05-30 | 熊映明 | Chemical sanding smokeless-polishing technology for aluminium alloy |
| CN103361646A (en) * | 2013-07-02 | 2013-10-23 | 天长市京发铝业有限公司 | Chemical polishing solution for aluminum and aluminum alloy |
| CN104141134A (en) * | 2014-07-28 | 2014-11-12 | 成都派莱克科技有限公司 | Zinc alloy brightener |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042395A (en) * | 2019-03-27 | 2019-07-23 | 祝亚琴 | Aluminium polishing additive |
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Application publication date: 20150520 |