CN109183119A - A kind of aluminium and aluminium alloy electrolytic coloring list pink salt technique - Google Patents
A kind of aluminium and aluminium alloy electrolytic coloring list pink salt technique Download PDFInfo
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- CN109183119A CN109183119A CN201810891253.0A CN201810891253A CN109183119A CN 109183119 A CN109183119 A CN 109183119A CN 201810891253 A CN201810891253 A CN 201810891253A CN 109183119 A CN109183119 A CN 109183119A
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- aluminum profile
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/20—Electrolytic after-treatment
- C25D11/22—Electrolytic after-treatment for colouring layers
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
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- Chemical Kinetics & Catalysis (AREA)
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- Materials Engineering (AREA)
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Abstract
The present invention provides a kind of aluminium and aluminium alloy electrolytic coloring list pink salt technique, the following steps are included: S1, first selection aluminum profile progress preprocessing, aluminum profile is carried out deep processing into blank again, S2, the aluminum profile for being processed into blank is fixed on the conducting rod of conducting beam, make the current loop of anodic oxidation, S3, the aluminum profile for hanging up properly dress carry out degreasing, aluminum profile after degreasing is subjected to initial water wash, the aluminum profile of initial water wash is subjected to alkali cleaning, aluminum profile after alkali cleaning is neutralized, the aluminum profile after neutralization is washed again.The invention enables oxidation film film thickness to keep uniformity, colour color more evenly, avoid the mass defects such as color difference, both ends color difference up and down, keep color more stable, improve tank liquor dispersibility, control stannous sulfate concentration can be lower, true black is coloured out in a relatively short period of time, is improved black production capacity, is saved medicine consumption and energy consumption.
Description
Technical field
The present invention relates to surface dye technology field, specially a kind of aluminium and aluminium alloy electrolytic coloring list pink salt technique.
Background technique
According to present status in China, level and development trend, aluminium and its alloy material are with light-weight, specific gravity is strong, easily molded, resistance to
The features such as corrosion is good is widely used in each necks such as aerospace, communications and transportation, light industry, building materials, packaging anti-corrosion, furniture, electric appliance
There is the title of the second steel in domain.It is the trend of the world today for steel, copper and timber with aluminium.Aluminium alloy script color is single, Bu Nengman
The diversified demand of color in foot application puts forward update, higher requirement to the aluminium coloring of color multiplicity.Today is developed to,
Aluminium alloy anode oxide electrolytic coloring technology has been in core technology status, decides the product competition of aluminium alloy manufacturing enterprise
Power.For bronze colour system, tin-nickel complex salt technique is widely used in aluminium alloy electrolytic coloring, easy to control to light champagne
Color difference range between product.But due to the presence of nickel salt, industrial wastewater will reach the requirement of environment protection emission, need to recycle using nickel
Technology, and this technical costs is higher, difficulty is larger, is extremely difficult to national emission standard.
Traditional uses tin-nickel complex salt electrolytic colouring technology, so that color difference, two up and down, occurs in coloring uneven color
The mass defects such as head color difference, keep color unstable；It takes a long time intrinsic color and goes out true black, reduce black production capacity.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of aluminium and aluminium alloy electrolytic coloring list pink salt technique, biography is solved
System uses tin-nickel complex salt electrolytic colouring technology, so that the quality such as color difference, both ends color difference up and down, occurs in coloring uneven color
Defect keeps color unstable；Take a long time the problem of intrinsic color goes out true black, reduces black production capacity.
(2) technical solution
To realize the thermal conductivity of the above-mentioned thermally conductive label of raising and the purpose of cementability, the invention provides the following technical scheme: a kind of
Aluminium and aluminium alloy electrolytic coloring list pink salt technique, comprising the following steps:
S1, aluminum profile progress preprocessing is first chosen, then aluminum profile is carried out deep processing into blank；
S2, the aluminum profile for being processed into blank is fixed on the conducting rod of conducting beam, makes the current loop of anodic oxidation；
S3, the aluminum profile for hanging up properly dress carry out degreasing, the aluminum profile after degreasing are carried out initial water wash, by the aluminium profiles of initial water wash
Material carries out alkali cleaning, and the aluminum profile after alkali cleaning is neutralized, the aluminum profile after neutralization is washed again；
S4, the aluminum profile after washing is formed into oxidation in aluminium shape surface using redox reaction under DC electric field effect
Film washes the aluminum profile after anodic oxidation again；
S5, by the aluminum profile that the aluminum profile after washing is handled through conventional sulphuric acid anodizing be immersed in the solution containing metal salt into
Row electrolysis processing, makes oxidation film coloring:
S6, the aluminum profile after electrolytic coloring is washed into aluminum profile using tap water overflow, and carries out constant temperature sealing pores；
S7, the aluminum profile after constant temperature sealing pores is carried out to the washing of twice road pure water again, by the carry out drying and processing after washing,
The aluminum profile after drying is finally subjected to blanking.
Preferably, it, first according to every specification profile area, is set according to the operating procedure in S2 when aluminum profile is filled and hung
Constant current and voltage, and keep the area of profile between double bridging of each slot almost the same, and the difference of area is preferably controlled in≤8%,
Former single-end conductive is changed to both-end conduction again, reduces the voltage drop between profile.
Preferably, according to the operating procedure in S3, specific method is to remove aluminum profile first with industrial sulphuric acid squeezing
The oil contamination on its surface is remained in journey, recycles one of tap water overflow to wash aluminum profile, then remove aluminum profile with NAOH
The natural oxide film on surface recycles the overflow of twice tap water to wash aluminum profile.
Preferably, according to the operating procedure in S4, when carrying out anodic oxidation, i.e., with bridging upper, middle and lower, left, center, right 6
The film thickness error in a orientation is controlled in 2um or so, and the temperature of oxidation trough tank liquor is preferably controlled between 20 DEG C ± 1 DEG C.
Preferably, according to the operating procedure in S5, in electrolytic coloring, by the ingredient of stannous sulfate in electrolytic coloring tank liquor
Control is in 8-10 grams per liter, and the time of electrolytic coloring is preferably controlled between 13-15min.
Preferably, according to the operating procedure in S5, in electrolytic coloring, the electrode in electrolytic cell is pure tin plate electrode, and
And color additive is stablized in 4 valence tin.
Preferably, according to the operating procedure in S7, specific method is to be carried out using hot-air as medium high by Convective Heating
Temperature drying, aluminium shape surface is dried.
The utility model has the advantages that
The present invention provides a kind of aluminium and aluminium alloy electrolytic coloring list pink salt techniques.Have it is following the utility model has the advantages that
1, the aluminium and aluminium alloy electrolytic coloring list pink salt technique, by aluminum profile fill hang when, according to every specification profile area, if
Constant current, voltage simultaneously keep the area of profile between double bridging of each slot almost the same, difference≤8% of area, and by former single-end conductive
It is changed to both-end conduction, the voltage drop between profile is reduced, so that the film thickness error in 6 bridging upper, middle and lower, left, center, right orientation
Control is in 2um or so, so that oxidation film film thickness keeps uniformity, so that coloring color is more evenly, avoids color difference, both ends up and down
The mass defects such as color difference keep color more stable, and in oxidation film 6-10um, have reached the requirement of black electrolysis, so that
Film explosion is avoided when final products are curved bicycle wheel rim, oxidation film film thickness has 2- by original whole branch 5cm scale
3cm, become range it is near≤2cm.
2, the aluminium and aluminium alloy electrolytic coloring list pink salt technique, by the way that the stainless steel electrode of original double salt techniques to be changed to
Pure tin plate electrode discharges link after reducing the nickel recycling of environmental requirement again, and tin consumption, which is directly precipitated by sheet tin, to supplement, and reduces
The precipitating of tin when not producing reduces cost, and in color additive while stablizing 4 valence tin, by product in 6-10um
Film thickness in the case of reach the standard requirements of black product, improve tank liquor dispersibility, control stannous sulfate concentration can be lower,
It colours out true black in a relatively short period of time, improves black production capacity, saves medicine consumption and energy consumption, and product salt spray test after colouring >=
9 grades (120 hours).
Detailed description of the invention
Fig. 1 is aluminium of the present invention and aluminium alloy electrolytic coloring list pink salt process flow chart.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of aluminium and aluminium alloy electrolytic coloring list pink salt techniques, comprising the following steps:
S1, aluminum profile progress preprocessing is first chosen, then aluminum profile is carried out deep processing into blank；
S2, the aluminum profile for being processed into blank is fixed on the conducting rod of conducting beam, makes the current loop of anodic oxidation,
When aluminum profile is filled and hung, first according to every specification profile area, setting electric current and voltage are carried out, and make type between double bridging of each slot
The area of material is almost the same, and the difference of area is preferably controlled in≤8%, then former single-end conductive is changed to both-end conduction, reduces profile
Between voltage drop；
S3, the aluminum profile for hanging up properly dress carry out degreasing, the aluminum profile after degreasing are carried out initial water wash, by the aluminium profiles of initial water wash
Material carries out alkali cleaning, and the aluminum profile after alkali cleaning is neutralized, the aluminum profile after neutralization is washed again, and specific method is first
The oil contamination that aluminum profile remains in its surface in extrusion process is removed using industrial sulphuric acid, recycles one of tap water overflow
Aluminum profile is washed, then removes the natural oxide film of aluminium shape surface with NAOH, the overflow of twice tap water is recycled to wash aluminum profile；
S4, the aluminum profile after washing is formed into oxidation in aluminium shape surface using redox reaction under DC electric field effect
Film washes the aluminum profile after anodic oxidation again, when carrying out anodic oxidation, i.e., with bridging upper, middle and lower, left, center, right 6
The film thickness error in orientation is controlled in 2um or so, and the temperature of oxidation trough tank liquor is preferably controlled between 20 DEG C ± 1 DEG C；
S5, by the aluminum profile that the aluminum profile after washing is handled through conventional sulphuric acid anodizing be immersed in the solution containing metal salt into
Row electrolysis processing, makes oxidation film coloring, in electrolytic coloring, by the Composition Control of stannous sulfate in electrolytic coloring tank liquor in 8-10
Grams per liter, and the time of electrolytic coloring preferably controls between 13-15min, and in electrolytic coloring, the electrode in electrolytic cell is pure
Sheet tin electrode, and color additive is stablized in 4 valence tin.
S6, the aluminum profile after electrolytic coloring is washed into aluminum profile using tap water overflow, and carries out constant temperature sealing pores.
S7, the aluminum profile after constant temperature sealing pores is carried out to the washing of twice road pure water again, will dry after washing
Processing, finally carries out blanking for the aluminum profile after drying, and specific method is to be carried out using hot-air as medium high by Convective Heating
Temperature drying, aluminium shape surface is dried.
The beneficial effects of the present invention are: the aluminium and aluminium alloy electrolytic coloring list pink salt technique, by when aluminum profile is filled and is hung,
According to every specification profile area, setting electric current, voltage simultaneously keeps the area of profile between double bridging of each slot almost the same, area it
Difference≤8%, and by former single-end conductive be changed to both-end conduction, reduce profile between voltage drop so that bridging upper, middle and lower, a left side,
In, the film thickness error control in right 6 orientation in 2um or so so that oxidation film film thickness keeps uniformity, so that coloring color is more equal
It is even, the mass defects such as color difference, both ends color difference up and down are avoided, keep color more stable, and in oxidation film 6-10um, reach
Black electrolysis requirement so that avoided when final products are curved bicycle wheel rim film explosion, oxidation film film thickness is by original
Come whole branch 5cm scale have 2-3cm, become range it is near≤2cm.
Also, by the aluminium and aluminium alloy electrolytic coloring list pink salt technique, by by the stainless steel of original double salt techniques
Electrode is changed to pure tin plate electrode, discharges link again after reducing the nickel recycling of environmental requirement, tin consumption, which is directly precipitated by sheet tin, mends
It fills, reduces the precipitating of tin when not producing, reduce cost, and in color additive while stablizing 4 valence tin, by product
The standard requirements for reaching black product in the film thickness of 6-10um improve tank liquor dispersibility, control stannous sulfate concentration
Can be lower, true black is coloured out in a relatively short period of time, is improved black production capacity, is saved medicine consumption and energy consumption, and product after coloring
Salt spray test >=9 grade (120 hours).
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of aluminium and aluminium alloy electrolytic coloring list pink salt technique, which comprises the following steps:
S1, aluminum profile progress preprocessing is first chosen, then aluminum profile is carried out deep processing into blank；
S2, the aluminum profile for being processed into blank is fixed on the conducting rod of conducting beam, makes the current loop of anodic oxidation；
S3, the aluminum profile for hanging up properly dress carry out degreasing, the aluminum profile after degreasing are carried out initial water wash, by the aluminium profiles of initial water wash
Material carries out alkali cleaning, and the aluminum profile after alkali cleaning is neutralized, the aluminum profile after neutralization is washed again；
S4, the aluminum profile after washing is formed into oxidation in aluminium shape surface using redox reaction under DC electric field effect
Film washes the aluminum profile after anodic oxidation again；
S5, by the aluminum profile that the aluminum profile after washing is handled through conventional sulphuric acid anodizing be immersed in the solution containing metal salt into
Row electrolysis processing, makes oxidation film coloring；
S6, the aluminum profile after electrolytic coloring is washed into aluminum profile using tap water overflow, and carries out constant temperature sealing pores；
S7, the aluminum profile after constant temperature sealing pores is carried out to the washing of twice road pure water again, by the carry out drying and processing after washing,
The aluminum profile after drying is finally subjected to blanking.
2. a kind of aluminium according to claim 1 and aluminium alloy electrolytic coloring list pink salt technique, which is characterized in that including following
Step: setting electric current and electricity, first according to every specification profile area, are carried out when aluminum profile is filled and hung according to the operating procedure in S2
Pressure, and keep the area of profile between double bridging of each slot almost the same, and the difference of area is preferably controlled in≤8%, then will original it is single-ended
Conduction is changed to both-end conduction, reduces the voltage drop between profile.
3. a kind of aluminium according to claim 1 and aluminium alloy electrolytic coloring list pink salt technique, which is characterized in that including following
Step: according to the operating procedure in S3, specific method is to remove aluminum profile first with industrial sulphuric acid to remain in extrusion process
The oil contamination on its surface recycles one of tap water overflow to wash aluminum profile, then the nature of aluminium shape surface is removed with NAOH
Oxidation film recycles the overflow of twice tap water to wash aluminum profile.
4. a kind of aluminium according to claim 1 and aluminium alloy electrolytic coloring list pink salt technique, which is characterized in that including following
Step: the film according to the operating procedure in S4, when carrying out anodic oxidation, i.e., with 6 bridging upper, middle and lower, left, center, right orientation
Thick control errors are in 2um or so, and the temperature of oxidation trough tank liquor is preferably controlled between 20 DEG C ± 1 DEG C.
5. a kind of aluminium according to claim 1 and aluminium alloy electrolytic coloring list pink salt technique, which is characterized in that including following
Step: according to the operating procedure in S5, in electrolytic coloring, by the Composition Control of stannous sulfate in electrolytic coloring tank liquor in 8-10
Grams per liter, and the time of electrolytic coloring is preferably controlled between 13-15min.
6. a kind of aluminium according to claim 1 and aluminium alloy electrolytic coloring list pink salt technique, which is characterized in that including following
Step: according to the operating procedure in S5, in electrolytic coloring, the electrode in electrolytic cell is pure tin plate electrode, and colours addition
Agent is stablized in 4 valence tin.
7. a kind of aluminium according to claim 1 and aluminium alloy electrolytic coloring list pink salt technique, which is characterized in that including following
Step: according to the operating procedure in S7, specific method is to carry out high temperature drying by medium of hot-air by Convective Heating, will
Aluminium shape surface is dried.
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| CN201810891253.0A CN109183119A (en) | 2018-08-07 | 2018-08-07 | A kind of aluminium and aluminium alloy electrolytic coloring list pink salt technique |
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| CN201810891253.0A CN109183119A (en) | 2018-08-07 | 2018-08-07 | A kind of aluminium and aluminium alloy electrolytic coloring list pink salt technique |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016704A (en) * | 2019-05-21 | 2019-07-16 | 苏州市同兴铝业有限公司 | A kind of aluminium shape surface treatment process |
| CN110965101A (en) * | 2019-12-31 | 2020-04-07 | 安徽科蓝特铝业有限公司 | Magnetic suspension constant-temperature cooling single tin oxide coloring method |
| CN112281198A (en) * | 2020-11-17 | 2021-01-29 | 成都阳光铝制品有限公司 | Aluminum material coloring method |
| CN112439801A (en) * | 2020-11-17 | 2021-03-05 | 成都阳光铝制品有限公司 | Optimized aluminum product production method |
| CN115449878A (en) * | 2022-08-24 | 2022-12-09 | 四会市建鑫装饰材料有限公司 | Black coloring process for aluminum profile |
| CN116377539A (en) * | 2023-03-20 | 2023-07-04 | 吉林利源精制股份有限公司 | Special constant-temperature hole sealing equipment for electrolytic coloring of aluminum profile and single tin salt |
| CN116852045A (en) * | 2023-07-25 | 2023-10-10 | 东莞市金源制冷科技有限公司 | Technological preparation flow of aluminum alloy air conditioner connecting pipe and flaring processing device thereof |
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| CN110016704A (en) * | 2019-05-21 | 2019-07-16 | 苏州市同兴铝业有限公司 | A kind of aluminium shape surface treatment process |
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| CN112281198A (en) * | 2020-11-17 | 2021-01-29 | 成都阳光铝制品有限公司 | Aluminum material coloring method |
| CN112439801A (en) * | 2020-11-17 | 2021-03-05 | 成都阳光铝制品有限公司 | Optimized aluminum product production method |
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| CN116377539A (en) * | 2023-03-20 | 2023-07-04 | 吉林利源精制股份有限公司 | Special constant-temperature hole sealing equipment for electrolytic coloring of aluminum profile and single tin salt |
| CN116852045A (en) * | 2023-07-25 | 2023-10-10 | 东莞市金源制冷科技有限公司 | Technological preparation flow of aluminum alloy air conditioner connecting pipe and flaring processing device thereof |
| CN116852045B (en) * | 2023-07-25 | 2023-12-29 | 东莞市金源制冷科技有限公司 | Technological preparation flow of aluminum alloy air conditioner connecting pipe and flaring processing device thereof |
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