CN105239065B - A kind of aluminium sheet passivation technology - Google Patents
A kind of aluminium sheet passivation technology Download PDFInfo
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- CN105239065B CN105239065B CN201510749916.1A CN201510749916A CN105239065B CN 105239065 B CN105239065 B CN 105239065B CN 201510749916 A CN201510749916 A CN 201510749916A CN 105239065 B CN105239065 B CN 105239065B
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- aluminium sheet
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- passivation
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Abstract
The present invention relates to a kind of aluminium sheet passivation technology, comprise the following steps：（1）, surface of aluminum plate be put into soaking compartment use sodium bicarbonate solution immersion treatment, then wipe surface of aluminum plate using soft cloth, and rinsed well using clear water；（2）, surface of aluminum plate drying, then uniformly spray silver oxide powder in surface of aluminum plate, then the aluminium sheet for being sprayed with silver oxide powder wiped using the soft cloth for being moistened with kerosene；（3）, by aluminium sheet use sodium bicarbonate solution immersion treatment, cleaning；(4), by aluminium sheet Passivation Treatment；（5）, the aluminium sheet that Passivation Treatment is completed rinsed well using water, dry.The method of the present invention is when handling aluminium sheet, first wiped after cleaning using silver oxide with kerosene, the foreign matter of surface of aluminum plate can be removed, the consistency of uniformity and passivation layer when can lift follow-up passivation again, and after processing, the thickness of passivation layer can be increased, the Corrosion Protection of aluminium sheet and the flatness of surface of aluminum plate after passivation is greatly promoted.
Description
Technical field
The invention belongs to field of metal surface treatment, and in particular to a kind of aluminium sheet passivation technology.
Background technology
Aluminium and aluminium alloy are that current applications are quite varied, one of most economical applicable material.World aluminum yield is from 1956
Year begins to exceed copper yield and occupied always first of non-ferrous metal.The yield and consumption of current aluminium（Calculated by ton）Steel are only second to, into
The second largest metal applied for the mankind；And the resource very abundant of aluminium, according to primary Calculation, the mineral reserve storage capacity of aluminium accounts for the earth's crust
Constitute more than the 8% of material.Aluminium is widely used, although aluminium surface in placement process can also be aoxidized, its consistency and uniform
Property is poor, in some special dimensions, it is necessary to which surface of aluminum plate is passivated into processing, prevents that aluminium from corroding, existing Passivation Treatment side
The consistency of method passivation is not high, and the thinner thickness of passivation layer, easily comes off.
The content of the invention
It is an object of the invention to provide a kind of aluminium sheet passivation technology, surface of aluminum plate is passivated, the anti-of aluminium sheet is improved
Rotten performance.
A kind of aluminium sheet passivation technology, comprises the following steps：
（1）, by surface of aluminum plate be put into soaking compartment using 40 DEG C, mass fraction for 3-4% sodium bicarbonate solution immersion at
60-72s is managed, then surface of aluminum plate is wiped using soft cloth, and rinse well using clear water；
（2）, by step（1）The surface of aluminum plate handled well is dried at a temperature of 30 DEG C -40 DEG C, then uniform in surface of aluminum plate
Silver oxide powder is sprayed, fountain height is 55-62g/m2, then using being moistened with the soft cloth of kerosene to being sprayed with the aluminium of silver oxide powder
Plate is wiped, and pressure during wiping is 0.35-0.42MPa, and the wiping time is 5-8min；
（3）, by step（2）At the sodium bicarbonate solution immersion that the aluminium sheet handled well uses 28 DEG C, mass fraction is 3-4%
3-5min is managed, is then cleaned using deionized water, deionized water temperature is 22 DEG C -28 DEG C；
(4), the aluminium sheet for handling above-mentioned steps well uses inactivating treatment liquid in 25-32 DEG C of Passivation Treatment 25-33min；
（5）, the aluminium sheet that completes Passivation Treatment it is clean using deionized water rinsing, dried at 35-40 DEG C.
Preferably, the inactivating treatment liquid includes silane coupler mass concentration in treatment fluid A and treatment fluid B, treatment fluid A
It is water and cosolvent for 1.2-1.5%, mixed amine mass concentration 4.3-5.8%, dimethylformamide mass concentration 1.5-3% surpluses；
The mass concentration of sodium dichromate is 8-15% in treatment fluid B, and surplus is water, and regulation pH is 4.5-6；In use, first using treatment fluid
A handles 10-15min, then using treatment fluid B processing.
A small amount of conventional dissolving adjuvants can be used when in the present invention prepared by reagent, cosolvent usage amount is less than 5%.
Beneficial effects of the present invention：The present invention method when handling aluminium sheet, first after cleaning using silver oxide with
Kerosene is wiped, and can remove the foreign matter of surface of aluminum plate, the cause of uniformity and passivation layer when can lift follow-up passivation again
Density, lifting passivation after aluminium sheet spray when and coating caking property, and processing after, the thickness of passivation layer can be increased, significantly
The flatness of surface of aluminum plate after the Corrosion Protection of lifting aluminium sheet and passivation.
Temperature and time control in the present invention in each step, the Passivation Treatment effect to aluminium sheet has a great impact, this
Invention also demonstrates different temperatures and time control, in the case where changing temperature and time, carries out salt spray test, as a result shows
After condition changes, the salt spray test time shortens in the range of 100-263h, illustrates that the condition control of the present invention produces fabulous effect
Really.
Embodiment
Embodiment 1
A kind of aluminium sheet passivation technology, comprises the following steps：
（1）, by surface of aluminum plate be put into soaking compartment using 40 DEG C, mass fraction for 3.5% sodium bicarbonate solution immersion at
65s is managed, then surface of aluminum plate is wiped using soft cloth, and rinse well using clear water；
（2）, by step（1）The surface of aluminum plate handled well is dried at a temperature of 32 DEG C, is then uniformly sprayed in surface of aluminum plate
Silver oxide powder, fountain height is 58g/m2, then the aluminium sheet for being sprayed with silver oxide powder is carried out using the soft cloth for being moistened with kerosene
Wipe, pressure during wiping is 0.4MPa, the wiping time is 6min；
（3）, by step（2）At the sodium bicarbonate solution immersion that the aluminium sheet handled well uses 28 DEG C, mass fraction is 3-4%
3min is managed, is then cleaned using deionized water, deionized water temperature is 25 DEG C；
(4), the aluminium sheet for handling above-mentioned steps well uses inactivating treatment liquid in 28 DEG C of Passivation Treatment 28min；
（5）, the aluminium sheet that completes Passivation Treatment it is clean using deionized water rinsing, dried at 36 DEG C.
The inactivating treatment liquid include silane coupler mass concentration in treatment fluid A and treatment fluid B, treatment fluid A be 1.5%,
Mixed amine mass concentration 4.8%, the surplus of dimethylformamide mass concentration 2% are water；The mass concentration of sodium dichromate in treatment fluid B
For 12%, surplus is water, and regulation pH is 6；In use, first using treatment fluid A processing 15min, then using treatment fluid B processing.
Aluminium sheet after present invention processing is tested using salt spray test：
Using the 5% sodium chloride salt aqueous solution, solution ph is 6.5 solution as spraying.Test temperature is 35 DEG C,
The sedimentation rate of salt fog is 2.2ml/80cm2.h, atomisation pressure：0.05MPa.
According to experimental standard, the hickie that gets rusty starts to stop experiment, and experiment is repeated 3 times, and experimental result is as follows：624h；
622h；628h.
Embodiment 2
A kind of aluminium sheet passivation technology, comprises the following steps：
（1）, by surface of aluminum plate be put into soaking compartment using 40 DEG C, mass fraction be 4% sodium bicarbonate solution immersion treatment
70s, then wipes surface of aluminum plate, and rinse well using clear water using soft cloth；
（2）, by step（1）The surface of aluminum plate handled well is dried at a temperature of 30 DEG C, is then uniformly sprayed in surface of aluminum plate
Silver oxide powder, fountain height is 60g/m2, then the aluminium sheet for being sprayed with silver oxide powder is carried out using the soft cloth for being moistened with kerosene
Wipe, pressure during wiping is 0.38MPa, the wiping time is 8min；
（3）, by step（2）The aluminium sheet handled well uses 28 DEG C, the sodium bicarbonate solution immersion treatment that mass fraction is 4%
4min, is then cleaned using deionized water, and deionized water temperature is 25 DEG C；
(4), the aluminium sheet for handling above-mentioned steps well uses inactivating treatment liquid in 25 DEG C of Passivation Treatment 30min；
（5）, the aluminium sheet that completes Passivation Treatment it is clean using deionized water rinsing, dried at 35 DEG C.
Preferably, the inactivating treatment liquid includes silane coupler mass concentration in treatment fluid A and treatment fluid B, treatment fluid A
It is water for 1.4%, mixed amine mass concentration 5.2%, the surplus of dimethylformamide mass concentration 2.3%；Sodium dichromate in treatment fluid B
Mass concentration be 15%, surplus is water, regulation pH be 6；In use, first using treatment fluid A processing 12min, then using processing
Liquid B processing.
Aluminium sheet after present invention processing is tested using salt spray test：
Using the 5% sodium chloride salt aqueous solution, solution ph is 6.5 solution as spraying.Test temperature is 35 DEG C,
The sedimentation rate of salt fog is 2.2ml/80cm2.h, atomisation pressure：0.05MPa.
According to experimental standard, the hickie that gets rusty starts to stop experiment, and experiment is repeated 3 times, and experimental result is as follows：658h；
671h；664h.
Embodiment 3
A kind of aluminium sheet passivation technology, comprises the following steps：
（1）, by surface of aluminum plate be put into soaking compartment using 40 DEG C, mass fraction for 3.5% sodium bicarbonate solution immersion at
64s is managed, then surface of aluminum plate is wiped using soft cloth, and rinse well using clear water；
（2）, by step（1）The surface of aluminum plate handled well is dried at a temperature of 32 DEG C, is then uniformly sprayed in surface of aluminum plate
Silver oxide powder, fountain height is 59g/m2, then the aluminium sheet for being sprayed with silver oxide powder is carried out using the soft cloth for being moistened with kerosene
Wipe, pressure during wiping is 0.4MPa, the wiping time is 7min；
（3）, by step（2）The aluminium sheet handled well uses 28 DEG C, the sodium bicarbonate solution immersion treatment that mass fraction is 4%
3min, is then cleaned using deionized water, and deionized water temperature is 26 DEG C；
(4), the aluminium sheet for handling above-mentioned steps well uses inactivating treatment liquid in 28 DEG C of Passivation Treatment 30min；
（5）, the aluminium sheet that completes Passivation Treatment it is clean using deionized water rinsing, dried at 36 DEG C.
Preferably, the inactivating treatment liquid includes silane coupler mass concentration in treatment fluid A and treatment fluid B, treatment fluid A
It is water for 1.5%, mixed amine mass concentration 5%, the surplus of dimethylformamide mass concentration 1.8%；Sodium dichromate in treatment fluid B
Mass concentration is 12%, and surplus is water, and regulation pH is 5.5；In use, first using treatment fluid A processing 13min, then using processing
Liquid B processing.
Aluminium sheet after present invention processing is tested using salt spray test：
Using the 5% sodium chloride salt aqueous solution, solution ph is 6.5 solution as spraying.Test temperature is 35 DEG C,
The sedimentation rate of salt fog is 2.2ml/80cm2.h, atomisation pressure：0.05MPa.
According to experimental standard, the hickie that gets rusty starts to stop experiment, and experiment is repeated 3 times, and experimental result is as follows：618h；
622h；623h.
Claims (2)
1. a kind of aluminium sheet passivation technology, it is characterised in that comprise the following steps：
（1）, by surface of aluminum plate be put into soaking compartment using 40 DEG C, mass fraction be 3-4% sodium bicarbonate solution immersion treatment
60-72s, then wipes surface of aluminum plate, and rinse well using clear water using soft cloth；
（2）, by step（1）The surface of aluminum plate handled well is dried at a temperature of 30 DEG C -40 DEG C, is then uniformly sprayed in surface of aluminum plate
Silver oxide powder, fountain height is 55-62g/m2, then the aluminium sheet for being sprayed with silver oxide powder is entered using the soft cloth for being moistened with kerosene
Row is wiped, and pressure during wiping is 0.35-0.42MPa, and the wiping time is 5-8min；
（3）, by step（2）The aluminium sheet handled well uses 28 DEG C, the sodium bicarbonate solution immersion treatment 3- that mass fraction is 3-4%
5min, is then cleaned using deionized water, and deionized water temperature is 22 DEG C -28 DEG C；
(4), the aluminium sheet for handling above-mentioned steps well uses inactivating treatment liquid in 25-32 DEG C of Passivation Treatment 25-33min；
（5）, the aluminium sheet that completes Passivation Treatment it is clean using deionized water rinsing, dried at 35-40 DEG C.
2. a kind of aluminium sheet passivation technology according to claim 1, it is characterised in that the inactivating treatment liquid includes treatment fluid
Silane coupler mass concentration is 1.2-1.5%, mixed amine mass concentration 4.3-5.8%, diformazan in A and treatment fluid B, treatment fluid A
Base formamide mass concentration 1.5-3%, surplus is water；The mass concentration of sodium dichromate is 8-15% in treatment fluid B, and surplus is water,
Regulation pH is 4.5-6；In use, first using treatment fluid A processing 10-15min, then using treatment fluid B processing.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105951090A (en) * | 2016-05-31 | 2016-09-21 | 刘洪建 | Passivation method of aluminium plate |
| CN105951091A (en) * | 2016-05-31 | 2016-09-21 | 刘洪建 | Efficient passivation technology for aluminum material |
| CN106086844A (en) * | 2016-06-18 | 2016-11-09 | 安徽昊博健身器材有限公司 | A kind of surface treatment method of aluminum |
| CN106048628A (en) * | 2016-06-18 | 2016-10-26 | 安徽昊博健身器材有限公司 | Surface treatment method for aluminum alloy fastener |
| CN106086845A (en) * | 2016-06-18 | 2016-11-09 | 安徽昊博健身器材有限公司 | A kind of surface treatment method of 4A01 aluminium alloy |
| CN114248065B (en) * | 2020-09-22 | 2023-03-31 | 北京中研建科科技产业发展有限公司 | Aluminum template production and installation process and machining device |
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| CN103447220A (en) * | 2013-08-13 | 2013-12-18 | 河南辉龙铝业股份有限公司 | Aluminum profile spraying process |
| CN104498920A (en) * | 2014-11-28 | 2015-04-08 | 安徽华灿彩钢薄板科技有限公司 | Color steel plate processing method |
| CN104975280A (en) * | 2015-07-01 | 2015-10-14 | 江西飞达新材料科技股份有限公司 | Cold-rolled steel sheet passivating treatment method |
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| US7166483B2 (en) * | 2004-06-17 | 2007-01-23 | Tekcore Co., Ltd. | High brightness light-emitting device and manufacturing process of the light-emitting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447220A (en) * | 2013-08-13 | 2013-12-18 | 河南辉龙铝业股份有限公司 | Aluminum profile spraying process |
| CN104498920A (en) * | 2014-11-28 | 2015-04-08 | 安徽华灿彩钢薄板科技有限公司 | Color steel plate processing method |
| CN104975280A (en) * | 2015-07-01 | 2015-10-14 | 江西飞达新材料科技股份有限公司 | Cold-rolled steel sheet passivating treatment method |
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Denomination of invention: Aluminum board purifying process Effective date of registration: 20180320 Granted publication date: 20171010 Pledgee: The development of small and medium-sized enterprises financing Company Limited by Guarantee Jieshou City Pledgor: Anhui Feng Hui Metallgesellschaft AG Registration number: 2018340000076 |
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