CN105951090A - Passivation method of aluminium plate - Google Patents
Passivation method of aluminium plate Download PDFInfo
- Publication number
- CN105951090A CN105951090A CN201610387303.2A CN201610387303A CN105951090A CN 105951090 A CN105951090 A CN 105951090A CN 201610387303 A CN201610387303 A CN 201610387303A CN 105951090 A CN105951090 A CN 105951090A
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- China
- Prior art keywords
- solution
- passivating
- treatment
- aluminium sheet
- aluminium plate
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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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/36—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
- C23C22/364—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates containing also manganese cations
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/68—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous solutions with pH between 6 and 8
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention relates to a passivation method of an aluminium plate. The method comprises steps as follows: (1), the aluminium plate is washed and preliminarily treated with a treating agent; (2), the aluminium plate treated in the step (1) is dried, and a polypropylene glycol diglycidyl ether solution is sprayed to the surface of the aluminium plate with the spraying amount being 5 ml/m<2>; (3), within 1 min after completion of treatment in the step (2), the aluminium plate is placed into a passivation solution for passivation treatment for 15-20 s. When the aluminium plate is treated through the method, the aluminium plate is treated with multiple saline solutions firstly, so that dirt can be removed, the aluminium surface is easier to treat after treatment, and the passivation treatment efficiency and the treatment uniformity are improved. The passivation solution is combined with various treating agents for use, a dense oxidation film can be formed on the aluminium surface, more uniform treatment is realized, and the treatment effect is better.
Description
Technical field
The invention belongs to field of metal surface treatment, be specifically related to the passivating method of a kind of aluminium sheet.
Background technology
Aluminum and aluminium alloy are one of current applications applicable materials quite varied, most economical.World aluminum yield occupies first of non-ferrous metal within 1956, beginning to exceed copper yield always.The yield of current aluminum and consumption (calculating by ton) are only second to steel, become the second largest metal of mankind's application；And the resource of aluminum is the abundantest, according to primary Calculation, the mineral reserve storage capacity of aluminum accounts for the earth's crust and constitutes more than the 8% of material.Aluminum is of many uses, but generally requires before use and be passivated processing, and promotes its stability.
Summary of the invention
It is an object of the invention to provide the passivating method of a kind of aluminium sheet, surface of aluminum plate is passivated, improve the antiseptic property of aluminium sheet.
The passivating method of a kind of aluminium sheet, comprises the following steps:
(1), surface of aluminum plate is put in soaking compartment, use 40 DEG C, mass fraction be 2.5% sodium bicarbonate solution immersion treatment 30s, then non-woven fabrics is used to clean, then citric acid solution immersion treatment 20s using mass fraction to be 0.5%, immersion process use non-woven fabrics clean, then use aqueous solution of urea immersion treatment 5s of mass fraction 1.2%, use clear water to rinse；
(2) aluminium sheet, by above-mentioned steps handled well is dried, and uses polypropylene glycol diglycidyl ether solution spraying in surface of aluminum plate, and quantity for spray is 5ml/m2, described polypropylene glycol diglycidyl ether solution is made up of following raw material by weight: polypropylene glycol diglycidyl ether 2.5 parts, glycerol 5 parts, volume fraction 75% ethanol solution 8 parts；
(3), processed in 1min in step (2), aluminium sheet is put into passivating solution be passivated processing, the Passivation Treatment time is 15-20s, sulfur acid aluminum potassium 2-3g, Fluohydric acid. 3-5ml, potassium titanate 3-5g, potassium permanganate 8-10g, sodium hexameta phosphate 0.5-1g, tert-butyl alcohol 3-5g in every liter of passivating solution, the PH of regulation passivating solution is 5.5-6.5.
Preferably, sulfur acid aluminum potassium 2.2g, Fluohydric acid. 3.5ml, potassium titanate 4g, potassium permanganate 9g, sodium hexameta phosphate 0.6g, tert-butyl alcohol 5g in every liter of described passivating solution, the PH of regulation passivating solution is 5.5-6.5.
Beneficial effects of the present invention: the method for the present invention is when processing aluminium sheet, multiple saline solution is first used to process, dirt can not only be removed, and after processing, make aluminum surface be easier to process, promote efficiency and the uniformity of process of Passivation Treatment, the passivating solution of the application combines the use of each inorganic agent, aluminum surface can be made to form the oxide-film of densification, it processes evenly, treatment effect is more preferable, passivating film intensity after process is big, tool has good wearability, treatment fluid does not contains chromium, without substantially polluting, in the present invention, the temperature and time in each step controls, the Passivation Treatment effect of aluminium sheet is had a great impact, the present invention also demonstrates different temperatures and the time controls, the effect that its passivation effect of result substantially processes not as the application.
Detailed description of the invention
Embodiment 1
The passivating method of a kind of aluminium sheet, comprises the following steps:
(1), surface of aluminum plate is put in soaking compartment, use 40 DEG C, mass fraction be 2.5% sodium bicarbonate solution immersion treatment 30s, then non-woven fabrics is used to clean, then citric acid solution immersion treatment 20s using mass fraction to be 0.5%, immersion process use non-woven fabrics clean, then use aqueous solution of urea immersion treatment 5s of mass fraction 1.2%, use clear water to rinse；
(2) aluminium sheet, by above-mentioned steps handled well is dried, and uses polypropylene glycol diglycidyl ether solution spraying in surface of aluminum plate, and quantity for spray is 5ml/m2, described polypropylene glycol diglycidyl ether solution is made up of following raw material by weight: polypropylene glycol diglycidyl ether 2.5 parts, glycerol 5 parts, volume fraction 75% ethanol solution 8 parts；
(3), processed in 1min in step (2), aluminium sheet is put into passivating solution be passivated processing, the Passivation Treatment time is 15s, sulfur acid aluminum potassium 2.2g, Fluohydric acid. 3.5ml, potassium titanate 4g, potassium permanganate 9g, sodium hexameta phosphate 0.6g, tert-butyl alcohol 5g in every liter of passivating solution, remaining raw material is water, and the PH of regulation passivating solution is 5.5.
Aluminium sheet after the present invention being processed uses salt spray test to test:
Use 5% sodium chloride salt aqueous solution, solution pH value be 6.5 as spray solution.Test temperature is 35 DEG C, and the sedimentation rate of salt fog is 2.2ml/(80cm2.h), atomisation pressure: 0.05Mpa.
According to experimental standard, the white macula that gets rusty starts to stop experiment, and experiment is repeated 3 times, and experimental result is as follows: 596h；598h；596h.
Embodiment 2
The passivating method of a kind of aluminium sheet, comprises the following steps:
(1), surface of aluminum plate is put in soaking compartment, use 40 DEG C, mass fraction be 2.5% sodium bicarbonate solution immersion treatment 30s, then non-woven fabrics is used to clean, then citric acid solution immersion treatment 20s using mass fraction to be 0.5%, immersion process use non-woven fabrics clean, then use aqueous solution of urea immersion treatment 5s of mass fraction 1.2%, use clear water to rinse；
(2) aluminium sheet, by above-mentioned steps handled well is dried, and uses polypropylene glycol diglycidyl ether solution spraying in surface of aluminum plate, and quantity for spray is 5ml/m2, described polypropylene glycol diglycidyl ether solution is made up of following raw material by weight: polypropylene glycol diglycidyl ether 2.5 parts, glycerol 5 parts, volume fraction 75% ethanol solution 8 parts；
(3), processed in 1min in step (2), aluminium sheet is put into passivating solution be passivated processing, the Passivation Treatment time is 19s, sulfur acid aluminum potassium 3g, Fluohydric acid. 3.6ml, potassium titanate 4.2g, potassium permanganate 9g, sodium hexameta phosphate 0.8g, tert-butyl alcohol 4.5g in every liter of passivating solution, the PH of regulation passivating solution is 6.
Aluminium sheet after the present invention being processed uses salt spray test to test:
Use 5% sodium chloride salt aqueous solution, solution pH value be 6.5 as spray solution.Test temperature is 35 DEG C, and the sedimentation rate of salt fog is 2.2ml/(80cm2.h), atomisation pressure: 0.05Mpa.
According to experimental standard, the white macula that gets rusty starts to stop experiment, and experiment is repeated 3 times, and experimental result is as follows: 598h；599h；599h.
Claims (2)
1. the passivating method of an aluminium sheet, it is characterised in that comprise the following steps:
(1), surface of aluminum plate is put in soaking compartment, use 40 DEG C, mass fraction be 2.5% sodium bicarbonate solution immersion treatment 30s, then non-woven fabrics is used to clean, then citric acid solution immersion treatment 20s using mass fraction to be 0.5%, immersion process use non-woven fabrics clean, then use aqueous solution of urea immersion treatment 5s of mass fraction 1.2%, use clear water to rinse；
(2) aluminium sheet, by above-mentioned steps handled well is dried, and uses polypropylene glycol diglycidyl ether solution spraying in surface of aluminum plate, and quantity for spray is 5ml/m2, described polypropylene glycol diglycidyl ether solution is made up of following raw material by weight: polypropylene glycol diglycidyl ether 2.5 parts, glycerol 5 parts, volume fraction 75% ethanol solution 8 parts；
(3), processed in 1min in step (2), aluminium sheet is put into passivating solution be passivated processing, the Passivation Treatment time is 15-20s, sulfur acid aluminum potassium 2-3g, Fluohydric acid. 3-5ml, potassium titanate 3-5g, potassium permanganate 8-10g, sodium hexameta phosphate 0.5-1g, tert-butyl alcohol 3-5g in every liter of passivating solution, the PH of regulation passivating solution is 5.5-6.5.
The passivating method of a kind of aluminium sheet the most according to claim 1, it is characterized in that, sulfur acid aluminum potassium 2.2g, Fluohydric acid. 3.5ml, potassium titanate 4g, potassium permanganate 9g, sodium hexameta phosphate 0.6g, tert-butyl alcohol 5g in every liter of described passivating solution, the PH of regulation passivating solution is 5.5-6.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387303.2A CN105951090A (en) | 2016-05-31 | 2016-05-31 | Passivation method of aluminium plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387303.2A CN105951090A (en) | 2016-05-31 | 2016-05-31 | Passivation method of aluminium plate |
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| CN105951090A true CN105951090A (en) | 2016-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610387303.2A Pending CN105951090A (en) | 2016-05-31 | 2016-05-31 | Passivation method of aluminium plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060414A (en) * | 2017-12-14 | 2018-05-22 | 马鞍山新徽铝业有限公司 | A kind of aluminium sheet passivating solution |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634785A (en) * | 2012-05-07 | 2012-08-15 | 东莞市闻誉实业有限公司 | Method for passivation of zinc and zinc alloy and chromium-free passivation solution |
| CN103554438A (en) * | 2013-10-12 | 2014-02-05 | 瑞奇化工（松滋）有限公司 | Preparation method of modified epoxy hardener for reducing bleaching |
| CN104532225A (en) * | 2014-12-15 | 2015-04-22 | 镁联科技（芜湖）有限公司 | Aluminum alloy passivator, preparation method thereof and aluminum alloy passivating method |
| CN104894547A (en) * | 2015-06-12 | 2015-09-09 | 新乡学院 | Fluotitanate conversion fluid applied to surface of 6061 aluminum alloy and use method of fluotitanate conversion fluid |
| CN104928669A (en) * | 2015-03-30 | 2015-09-23 | 重庆志成机械有限公司 | Chromium-free passivation technology of cast aluminum alloy |
| CN105239065A (en) * | 2015-11-06 | 2016-01-13 | 安徽枫慧金属股份有限公司 | Aluminum board purifying process |
-
2016
- 2016-05-31 CN CN201610387303.2A patent/CN105951090A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634785A (en) * | 2012-05-07 | 2012-08-15 | 东莞市闻誉实业有限公司 | Method for passivation of zinc and zinc alloy and chromium-free passivation solution |
| CN103554438A (en) * | 2013-10-12 | 2014-02-05 | 瑞奇化工（松滋）有限公司 | Preparation method of modified epoxy hardener for reducing bleaching |
| CN104532225A (en) * | 2014-12-15 | 2015-04-22 | 镁联科技（芜湖）有限公司 | Aluminum alloy passivator, preparation method thereof and aluminum alloy passivating method |
| CN104928669A (en) * | 2015-03-30 | 2015-09-23 | 重庆志成机械有限公司 | Chromium-free passivation technology of cast aluminum alloy |
| CN104894547A (en) * | 2015-06-12 | 2015-09-09 | 新乡学院 | Fluotitanate conversion fluid applied to surface of 6061 aluminum alloy and use method of fluotitanate conversion fluid |
| CN105239065A (en) * | 2015-11-06 | 2016-01-13 | 安徽枫慧金属股份有限公司 | Aluminum board purifying process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060414A (en) * | 2017-12-14 | 2018-05-22 | 马鞍山新徽铝业有限公司 | A kind of aluminium sheet passivating solution |
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Application publication date: 20160921 |
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