CN107189620A - A kind of preparation method of black matt electrophoretic aluminium section - Google Patents
A kind of preparation method of black matt electrophoretic aluminium section Download PDFInfo
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- CN107189620A CN107189620A CN201710437120.1A CN201710437120A CN107189620A CN 107189620 A CN107189620 A CN 107189620A CN 201710437120 A CN201710437120 A CN 201710437120A CN 107189620 A CN107189620 A CN 107189620A
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- base material
- black matt
- electrophoretic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09D161/32—Modified amine-aldehyde condensates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
- C09D5/4419—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications with polymers obtained otherwise than by polymerisation reactions only involving carbon-to-carbon unsaturated bonds
- C09D5/4469—Phenoplasts; Aminoplasts
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/04—Electrophoretic coating characterised by the process with organic material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
Abstract
The present invention relates to a kind of preparation method of black matt electrophoretic aluminium section, comprise the following steps：Step 1: being carried out successively after degreasing, washing, alkali cleaning, washing, neutralization, washing to the base material of upper extension, anodic oxidation is carried out, the surface of the base material is formed oxide-film；Step 2: without electrolytic coloring link, directly carrying out hot pure water to the base material after anodic oxidation and washing；Step 3: the base material after being washed to hot pure water carries out black matt electrophoretic coating；Step 4: the section bar of black matt electrophoretic coating carry out successively pure water wash, draining, solidification, then undercarriage be packaged as finished product black matt aluminium section bar.The painting operation of the inventive method is good, production economy is high, film performance is excellent.
Description
Technical field
The invention belongs to aluminium shape surface processing technology field, and in particular to a kind of preparation of black matt electrophoretic aluminium section
Method.
Background technology
Delustring aluminium section bar is a kind of profile material with strong metal-like, is increasingly widely used in building, dress
The fields such as decorations, frame.
Electrophoresis extinction method in conventional art generally comprises following several：
First, electrophoresis delustring technology：
Electrophoresis delustring technology obtains delustring film by adding delustering agent in bloom electrophoretic coating.But addition delustering agent is obtained
The electrophoretic coating arrived, separates out because delustering agent lacks constant swimming speed in electrophoretic painting, easily causes lustre lacking uniformity；With
And washing or the difference of drying property of delustering agent and paint binder, also easily produce lustre lacking uniformity；
2nd, delustering agent delustring technology：
1. the sub- light extinction method of aerosils powder particle：The microfine silica powder particulate of high porosity is uniformly divided
Dissipate in bloom electrophoretic coating, equally distributed powder particle makes paint film have certain slightly rough surface after electrophoresis, works as incident light
When reaching rough coating surface, occur unrestrained transmitting, that is, occur scattering and produce delustring outward appearance.The shortcoming of the method is：1）
Use condition is more harsh, and production cost is high.Electrophoresis major trough and secondary groove circulate weak place and easily cause coagulation sedimentation.Section bar hangs down
Face directly and easily occur easily assembling the low in glossiness for causing section bar top and bottom in the upper surface of section bar if current mark, Horizontal production line
It is different.（Low above gloss, following high tendency）The drug-resistant degraded performance of fine silica powder end particle, especially alkali resistance are very
Difference.
2. organic syntheses wax light extinction method：The dispersion liquid of Tissuemat E, electrophoretic painting are added in high-light transparent electrophoretic coating
Afterwards, wax is oxidized during heating, so as to form rough rough surface, and in film internal residual, not phase is presented
Appearance state, obtains the high delustring outward appearance of covering power.The shortcoming of the method is：1）The paint film transparency is poor, and dispersing wax has certain
Covering, reduces the metal sense of aluminium section bar.2）Paint stability is poor, and dispersing wax there are problems that in coating；3）Wax
Cause in curing oven because of heating and disperse, cause to apply fouling membrane and wax smell is big, and hold fire hazardous.
It would therefore be highly desirable to innovate a kind of preparation method of new extinction electrophoresis aluminium section bar, the problems of the prior art are solved.
The content of the invention
The present invention provides a kind of preparation method of black matt electrophoretic aluminium section, solves electrophoresis extinction method in the prior art
The problems such as delustring aluminium section bar manufacturing cost height of preparation, product low in glossiness, rough surface, transparency difference.
In order to solve the above problems, technical scheme is as follows：
A kind of preparation method of black matt electrophoretic aluminium section, comprises the following steps：
Step 1: being carried out successively after degreasing, washing, alkali cleaning, washing, neutralization, washing to the base material of upper extension, anodic oxidation is carried out,
The surface of the base material is set to form oxide-film；
Step 2: without electrolytic coloring link, directly carrying out hot pure water to the base material after anodic oxidation and washing；
Step 3: the base material after being washed to hot pure water carries out black matt electrophoretic coating；
Step 4: the section bar of black matt electrophoretic coating carry out successively pure water wash, draining, solidification, then undercarriage be packaged as finished product
Black matt aluminium section bar.
Black matt electrophoretic coating in turn includes the following steps in the step 3：
1., first by the substrate surface acid solution after the cleaning anodic oxidation of normal temperature pure water step repeatedly, then reuses 75 DEG C -85
DEG C hot water cleaning base material 1 time；
Step 2., by the base material drip-dry after cleaning to the anhydrous residual in surface；
Step 3., in electrophoresis tank add black matt electrophoretic coating, by base material put into electrophoresis tank in, soak 100-120S, give
The voltage 210-240S that base material leads to 150-170V is coloured completely to substrate surface；
4., by the section bar after electrophoresis step proposes electrophoresis tank, successively put into RO1 rinsing bowls and RO2 rinsing bowls clean to surface without
Floating paint；
The mix proportion scheme of the black matt electrophoretic coating is as follows：2400-2600 parts of dumb light original paint, bloom original paint：300-400
Part, regulator：70-80 parts, 150-160 parts of diluent, 10-15 parts of nertralizer, 6800-7200 parts of pure water.
Described dumb light original paint and bloom original paint is acrylic-amino resin, and described regulator is carbon black color paste, institute
The diluent stated is the mixture of isopropanol and butyl glycol ether, and described nertralizer is triethylamine.Beneficial effects of the present invention：
1st, the painting operation of the inventive method is good：1. high hardness type（More than 4H）Film, the next scar of reduction friction belt,
Film comes off；2. there is outstanding film thickness uniformity, coating film gloss uniform temperature；3. the surface of dumb light coating can be with hidden light
Micro- paint film defect, makes appearance uniform consistent；4. coating has very high stability resin, will not precipitate；It with the addition of coloring
In the case of agent, the kind being had according to species difference needs to be circulated when stopping production.
2nd, the production economy of the inventive method is high：1. coating RO retracting devices are used, coating can be significantly improved
Utilization rate（>More than 95%）, there is in production very high economy；2. uniform film thickness, can reduce the usage amount of coating, effectively drop
The cost of prepared paint；3. aluminium section bar is without coloring, effectively reduction section bar pre-treatment cost, the requirement of all promising policy client color；
4. eye sense extruding lines and Surface of profile light defects can be covered, squeeze wood yield rate is improved；5. environment-friendly aqueous electrophoresis
Produced in coating, production without waste water, save production cost.
3rd, the inventive method film performance is excellent：1. product appearance is sedate serious, gorgeous elegant without losing, and can effectively subtract
Few light pollution；2. good corrosion resistance；3. good weatherability.
Embodiment
The present invention is further detailed with reference to embodiment：
A kind of preparation method of black matt electrophoretic aluminium section, comprises the following steps：
Step 1: being carried out successively after degreasing, washing, alkali cleaning, washing, neutralization, washing to the base material of upper extension, anodic oxidation is carried out,
The surface of the base material is set to form oxide-film；
Step 2: without electrolytic coloring link, directly carrying out hot pure water to the base material after anodic oxidation and washing；
Step 3: the base material after being washed to hot pure water carries out black matt electrophoretic coating；
Step 4: the section bar of black matt electrophoretic coating carry out successively pure water wash, draining, solidification, then undercarriage be packaged as finished product
Black matt aluminium section bar.
Black matt electrophoretic coating in turn includes the following steps in the step 3：
1., first by the substrate surface acid solution after the cleaning anodic oxidation of normal temperature pure water step repeatedly, then reuses 75 DEG C -85
DEG C hot water cleaning base material 1 time；
Step 2., by the base material drip-dry after cleaning to the anhydrous residual in surface；
Step 3., in electrophoresis tank add black matt electrophoretic coating, by base material put into electrophoresis tank in, soak 100-120S, give
The voltage 210-240S that base material leads to 150-170V is coloured completely to substrate surface；
4., by the section bar after electrophoresis step proposes electrophoresis tank, successively put into RO1 rinsing bowls and RO2 rinsing bowls clean to surface without
Floating paint；
The mix proportion scheme of the black matt electrophoretic coating is as follows：2400-2600 parts of dumb light original paint, bloom original paint：300-400
Part, regulator：70-80 parts, 150-160 parts of diluent, 10-15 parts of nertralizer, 6800-7200 parts of pure water.
Described dumb light original paint and bloom original paint is acrylic-amino resin, and described regulator is carbon black color paste, institute
The diluent stated is the mixture of isopropanol and butyl glycol ether, and described nertralizer is triethylamine.
Embodiment 1
A kind of preparation method of black matt electrophoretic aluminium section, comprises the following steps：
Step 1: being carried out successively after degreasing, washing, alkali cleaning, washing, neutralization, washing to the base material of upper extension, anodic oxidation is carried out,
The surface of the base material is set to form oxide-film；
Step 2: without electrolytic coloring link, directly carrying out hot pure water to the base material after anodic oxidation and washing；
Step 3: the base material after being washed to hot pure water carries out black matt electrophoretic coating；
Black matt electrophoretic coating in turn includes the following steps：
1., first by the substrate surface acid solution after the cleaning anodic oxidation of normal temperature pure water step repeatedly, then reuses 80 DEG C
Hot water cleaning base material 1 time；
Step 2., by the base material drip-dry after cleaning to the anhydrous residual in surface；
Step 3., in electrophoresis tank add black matt electrophoretic coating, by base material put into electrophoresis tank in, soak 120S, to base material
Logical 150V voltage 210S is coloured completely to substrate surface；
4., by the section bar after electrophoresis step proposes electrophoresis tank, successively put into RO1 rinsing bowls and RO2 rinsing bowls clean to surface without
Floating paint；
Step 4: the section bar of black matt electrophoretic coating carry out successively pure water wash, draining, solidification, then undercarriage be packaged as finished product
Black matt aluminium section bar.
With 110m3Electrophoresis tank exemplified by, the mix proportion scheme of required black matt electrophoretic coating is as follows in electrophoresis tank：Dumb light
Original paint acrylic-amino resin 25400kg；Bloom original paint acrylic-amino resin 3800kg, regulator carbon black color paste 770kg；It is dilute
Release the mixture 1550kg of agent isopropanol and butyl glycol ether, nertralizer triethylamine 130kg, pure water 70m3。
Above example is most preferred embodiment.
Embodiment 2
A kind of preparation method of black matt electrophoretic aluminium section, comprises the following steps：
Step 1: being carried out successively after degreasing, washing, alkali cleaning, washing, neutralization, washing to the base material of upper extension, anodic oxidation is carried out,
The surface of the base material is set to form oxide-film；
Step 2: without electrolytic coloring link, directly carrying out hot pure water to the base material after anodic oxidation and washing；
Step 3: the base material after being washed to hot pure water carries out black matt electrophoretic coating；
Black matt electrophoretic coating in turn includes the following steps：
1., first by the substrate surface acid solution after the cleaning anodic oxidation of normal temperature pure water step repeatedly, then reuses 85 DEG C
Hot water cleaning base material 1 time；
Step 2., by the base material drip-dry after cleaning to the anhydrous residual in surface；
Step 3., in electrophoresis tank add black matt electrophoretic coating, by base material put into electrophoresis tank in, soak 115S, to base material
Logical 160V voltage 220S is coloured completely to substrate surface；
4., by the section bar after electrophoresis step proposes electrophoresis tank, successively put into RO1 rinsing bowls and RO2 rinsing bowls clean to surface without
Floating paint；
Step 4: the section bar of black matt electrophoretic coating carry out successively pure water wash, draining, solidification, then undercarriage be packaged as finished product
Black matt aluminium section bar.
With 110m3Electrophoresis tank exemplified by, the mix proportion scheme of required black matt electrophoretic coating is as follows in electrophoresis tank：Dumb light
Original paint acrylic-amino resin 24000kg；Bloom original paint acrylic-amino resin 3500kg, regulator carbon black color paste 720kg；It is dilute
Release the mixture 1500kg of agent isopropanol and butyl glycol ether, nertralizer triethylamine 100kg, pure water 68m3。
Embodiment 3
A kind of preparation method of black matt electrophoretic aluminium section, comprises the following steps：
Step 1: being carried out successively after degreasing, washing, alkali cleaning, washing, neutralization, washing to the base material of upper extension, anodic oxidation is carried out,
The surface of the base material is set to form oxide-film；
Step 2: without electrolytic coloring link, directly carrying out hot pure water to the base material after anodic oxidation and washing；
Step 3: the base material after being washed to hot pure water carries out black matt electrophoretic coating；
Black matt electrophoretic coating in turn includes the following steps：
1., first by the substrate surface acid solution after the cleaning anodic oxidation of normal temperature pure water step repeatedly, then reuses 85 DEG C
Hot water cleaning base material 1 time；
Step 2., by the base material drip-dry after cleaning to the anhydrous residual in surface；
Step 3., in electrophoresis tank add black matt electrophoretic coating, by base material put into electrophoresis tank in, soak 115S, to base material
Logical 160V voltage 220S is coloured completely to substrate surface；
4., by the section bar after electrophoresis step proposes electrophoresis tank, successively put into RO1 rinsing bowls and RO2 rinsing bowls clean to surface without
Floating paint；
Step 4: the section bar of black matt electrophoretic coating carry out successively pure water wash, draining, solidification, then undercarriage be packaged as finished product
Black matt aluminium section bar.
With 110m3Electrophoresis tank exemplified by, the mix proportion scheme of required black matt electrophoretic coating is as follows in electrophoresis tank：Dumb light
Original paint acrylic-amino resin 26000kg；Bloom original paint acrylic-amino resin 4000kg, regulator carbon black color paste 800kg；It is dilute
Release the mixture 1600kg of agent isopropanol and butyl glycol ether, nertralizer triethylamine 150kg, pure water 72m3。
The resin delustring technology of the present invention is, by resin Microgels bridging method, using the flat inhibition of hot-fluid, to obtain
To outward appearance is smooth, uniform coating, microcosmic rough colloidal pitch forms delustring film in baking process during precipitation.It is
It is totally different from by outer addition delustering agent to obtain the processing method of low gloss film.
The present invention is on the basis of resin antiglossing pigment, the special black pigment by adding, and enables the film of precipitation straight
Connect and obtain black matt paint film, reduce the pre-treatment production technology of aluminium section bar, all promising policy terminal client to color and
The requirement of gloss.
The black matt film of the present invention, because the application of resin method delustring technology, coating working solution is not likely to produce
Separation, gloss is uniform, stability is good.Paint film property indices are fully achieved or more than GB-5237 national standards.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Any modification, equal replacement and improvement for being made within principle etc., all should fall within the scope and spirit of the invention.
Claims (4)
1. a kind of preparation method of black matt electrophoretic aluminium section, it is characterised in that：
Comprise the following steps：
Step 1: being carried out successively after degreasing, washing, alkali cleaning, washing, neutralization, washing to the base material of upper extension, anodic oxidation is carried out,
The surface of the base material is set to form oxide-film；
Step 2: without electrolytic coloring link, directly carrying out hot pure water to the base material after anodic oxidation and washing；
Step 3: the base material after being washed to hot pure water carries out black matt electrophoretic coating；
Step 4: the section bar of black matt electrophoretic coating carry out successively pure water wash, draining, solidification, then undercarriage be packaged as finished product
Black matt aluminium section bar.
2. the preparation method of black matt electrophoretic aluminium section according to claim 1, it is characterised in that：In the step 3
Black matt electrophoretic coating in turn includes the following steps：
1., first by the substrate surface acid solution after the cleaning anodic oxidation of normal temperature pure water step repeatedly, then reuses 75 DEG C -85
DEG C hot water cleaning base material 1 time；
Step 2., by the base material drip-dry after cleaning to the anhydrous residual in surface；
Step 3., in electrophoresis tank add black matt electrophoretic coating, by base material put into electrophoresis tank in, soak 100-120S, give
The voltage 210-240S that base material leads to 150-170V is coloured completely to substrate surface；
4., by the section bar after electrophoresis step proposes electrophoresis tank, successively put into RO1 rinsing bowls and RO2 rinsing bowls clean to surface without
Floating paint.
3. the preparation method of black matt electrophoretic aluminium section according to claim 2, it is characterised in that：
The mix proportion scheme of the black matt electrophoretic coating is as follows：2400-2600 parts of dumb light original paint, bloom original paint：300-400
Part, regulator：70-80 parts, 150-160 parts of diluent, 10-15 parts of nertralizer, 6800-7200 parts of pure water.
4. the preparation method of black matt electrophoretic aluminium section according to claim 2, it is characterised in that：
Described dumb light original paint and bloom original paint is acrylic-amino resin, and described regulator is carbon black color paste, described
Diluent is the mixture of isopropanol and butyl glycol ether, and described nertralizer is triethylamine.
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| CN201710437120.1A CN107189620A (en) | 2017-06-12 | 2017-06-12 | A kind of preparation method of black matt electrophoretic aluminium section |
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| CN201710437120.1A CN107189620A (en) | 2017-06-12 | 2017-06-12 | A kind of preparation method of black matt electrophoretic aluminium section |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108265324A (en) * | 2018-01-31 | 2018-07-10 | 成都宏明双新科技股份有限公司 | A kind of shielding electrophoresis process |
| CN108588780A (en) * | 2017-12-21 | 2018-09-28 | 天津新艾隆科技有限公司 | A kind of production method of tertiary colour aluminium section bar and its aluminium section bar of preparation |
| CN108660495A (en) * | 2018-03-30 | 2018-10-16 | 江苏三锋汽车饰件有限公司 | A kind of aluminium alloy polychrome finish anticorrosive treatment process |
| CN108707942A (en) * | 2018-05-30 | 2018-10-26 | 江苏和兴汽车科技有限公司 | A kind of technique of aluminium alloy black anodizing electrophoresis |
| CN109137049A (en) * | 2018-09-06 | 2019-01-04 | 广东耀银山铝业有限公司 | A kind of easy pole electrophoretic aluminium section production technology being passivated pre-treatment |
| CN111690971A (en) * | 2020-06-19 | 2020-09-22 | 山东华建铝业集团有限公司 | Aluminum alloy soft light electrophoresis surface treatment production process |
| CN112210810A (en) * | 2020-10-09 | 2021-01-12 | 美图（福建）铝业有限公司 | Processing technology of high-corrosion-resistance extinction electrophoresis aluminum profile |
| CN113462933A (en) * | 2020-03-30 | 2021-10-01 | 中亿丰罗普斯金铝业股份有限公司 | Production method of extinction amber-copper aluminum profile and extinction amber-copper aluminum profile prepared by same |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588780A (en) * | 2017-12-21 | 2018-09-28 | 天津新艾隆科技有限公司 | A kind of production method of tertiary colour aluminium section bar and its aluminium section bar of preparation |
| CN108265324A (en) * | 2018-01-31 | 2018-07-10 | 成都宏明双新科技股份有限公司 | A kind of shielding electrophoresis process |
| CN108660495A (en) * | 2018-03-30 | 2018-10-16 | 江苏三锋汽车饰件有限公司 | A kind of aluminium alloy polychrome finish anticorrosive treatment process |
| CN108707942A (en) * | 2018-05-30 | 2018-10-26 | 江苏和兴汽车科技有限公司 | A kind of technique of aluminium alloy black anodizing electrophoresis |
| CN109137049A (en) * | 2018-09-06 | 2019-01-04 | 广东耀银山铝业有限公司 | A kind of easy pole electrophoretic aluminium section production technology being passivated pre-treatment |
| CN113462933A (en) * | 2020-03-30 | 2021-10-01 | 中亿丰罗普斯金铝业股份有限公司 | Production method of extinction amber-copper aluminum profile and extinction amber-copper aluminum profile prepared by same |
| CN111690971A (en) * | 2020-06-19 | 2020-09-22 | 山东华建铝业集团有限公司 | Aluminum alloy soft light electrophoresis surface treatment production process |
| CN112210810A (en) * | 2020-10-09 | 2021-01-12 | 美图（福建）铝业有限公司 | Processing technology of high-corrosion-resistance extinction electrophoresis aluminum profile |
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