CN106086844A - A kind of surface treatment method of aluminum - Google Patents
A kind of surface treatment method of aluminum Download PDFInfo
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- CN106086844A CN106086844A CN201610433708.5A CN201610433708A CN106086844A CN 106086844 A CN106086844 A CN 106086844A CN 201610433708 A CN201610433708 A CN 201610433708A CN 106086844 A CN106086844 A CN 106086844A
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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
- C23C22/05—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
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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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
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- 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
- C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/56—Treatment of aluminium or alloys based thereon
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Mechanical Engineering (AREA)
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Abstract
The present invention relates to the surface treatment method of a kind of aluminum, comprise the following steps: (1), aluminum is put in soaking compartment be carried out；(2) aluminum, by step (1) handled well uses clear water to rinse, hydraulic pressure 10kg/cm in flushing process2, aluminum surface is dried at 25 DEG C, uses passivating solution A to process 2 3min at 28 DEG C, then use passivating solution B to process 10min at 32 DEG C.The method of the present invention is when processing aluminium sheet, first use citric acid solution immersion treatment, then boric acid solution is used to clean, in boric acid solution, sodium sulfite is constantly added in cleaning process, after treatment, process through above-mentioned solution, aluminum surface is made to be more easy to be passivated processing, the present invention, when being passivated processing, uses two kinds of different passivating solutions to process, the method using first post processing, the treatment effect of passivator can be promoted, making passivation layer compactness higher, and the intensity of passivation layer is bigger, wearability and environmental suitability are higher.
Description
Technical field
The invention belongs to field of metal surface treatment, be specifically related to the surface treatment method of a kind of aluminum.
Background technology
Aluminum and aluminium alloy are one of current applications applicable materials quite varied, most economical.World aluminum yield is from 1956
Year begins to exceed copper yield and occupies first of non-ferrous metal always.The yield of current aluminum and consumption (calculating by ton) are only second to steel, become
Second largest metal for 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
Constitute more than the 8% of material.Aluminum uses extensively in multiple industry, because it has light weight, the feature of easily processing, it is extensively applied
In outdoor body-building equipment field, use as parts, although the oxidizable antiseptic property being beneficial to promote himself in itself surface,
But under conditions of outdoor environment is more complicated, its antiseptic effect still cannot meet the needs of outdoor application, needs its table
Face carries out preservative treatment.
Summary of the invention
It is an object of the invention to provide the surface treatment method of a kind of aluminum, surface of aluminum plate is carried out surface process, improves
The antiseptic property of aluminium sheet.
The surface treatment method of a kind of aluminum, comprises the following steps:
(1), by aluminum put in soaking compartment use 25 DEG C, mass fraction be 1.5% citric acid solution immersion treatment 2-3min, so
Rear use soft cloth wiping surface of aluminum plate, and use clear water to rinse well, the boric acid then using mass fraction to be 0.2% in aluminum is molten
Liquid cleans, and constantly adds sodium sulfite in cleaning process in boric acid solution, and sodium sulfite addition is boric acid solution weight
0.5%, the addition speed of sodium sulfite is the 1/10 of the total addition of addition sodium sulfite per minute, after having added, continues to soak
5min, uses ultrasonic wave concussion to process in immersion process, ultrasonic frequency is 30KHz；
(2) aluminum, by step (1) handled well uses clear water to rinse, hydraulic pressure 10kg/cm in flushing process2, aluminum is dried at 25 DEG C
Dry, use passivating solution A to process 2-3min at 28 DEG C, then use passivating solution B to process 10min, described passivating solution A at 32 DEG C
It is made up of following raw material by weight: the Fluohydric acid. of mass fraction 25% 15 parts, 8 parts of the sulphuric acid of 50%, fluotitanic acid 1.2 parts, Gao Meng
Acid 4.6 parts of potassium, 22 parts of water；Described passivating solution B is made up of following raw material by weight: coloured glaze base benzothiazole 8 parts, ethyl acetate 15
Part, the hydrogen peroxide 30 parts of benzene sulfonic acid sodium salt 1.2 parts, mass fraction 35%, 4 parts of the sulphuric acid of mass fraction 40%, 50 parts of water.
Applying coating at aluminum after step (2) has processed, described coating is made up of following raw material by weight: water solublity
Acrylic resin 40-45 part, ethyl acetate 15-20 part, polyurethane copolymer 18-20 part, graphene microchip 1-1.5 part, nanometer
Silver oxide 0.5-0.8 part, polyoxyethylene polyoxy propanol amidogen ether 0.8-1 part, Ketohexamethylene 14-16 part, pigment 1-2 part.
Beneficial effects of the present invention: the method for the present invention, when processing aluminium sheet, first uses citric acid solution immersion treatment,
Then use boric acid solution to clean, cleaning process constantly adds in boric acid solution sodium sulfite, after treatment, passes through
Above-mentioned solution processes, and makes aluminum surface be more easy to be passivated process, the present invention when being passivated processing, use two kinds different blunt
Change liquid to process, the method using first post processing, it is possible to promote the treatment effect of passivator, make passivation layer compactness higher, and
The intensity of passivation layer is bigger, and wearability and environmental suitability are higher.The present invention is continuing with coating after Passivation Treatment and sprays
It is coated with, improves antiseptic effect further, the good weatherability of the coating of the present invention, and there is extremely strong wearability, through aluminum
Surface processes so that it is having good Adhesion property, prevent from use coming off, paint stability is higher.
In the present invention, the temperature and time in Passivation Treatment step controls, and has the biggest to the Passivation Treatment effect of aluminium sheet
Impact, the present invention also demonstrates different temperatures and the time controls, and in the case of changing temperature and time, carries out salt spray test,
After result display condition changes, the salt spray test time shortens in the range of 100-263h, illustrates that the condition of the present invention controls to produce
Fabulous effect.
Detailed description of the invention
Embodiment 1
The surface treatment method of a kind of aluminum, comprises the following steps:
(1), by aluminum put in soaking compartment use 25 DEG C, mass fraction be 1.5% citric acid solution immersion treatment 2-3min, so
Rear use soft cloth wiping surface of aluminum plate, and use clear water to rinse well, then aluminum surface being used mass fraction is the boron of 0.2%
Acid solution cleans, and constantly adds sodium sulfite in cleaning process in boric acid solution, and sodium sulfite addition is boric acid solution weight
The 0.5% of amount, the addition speed of sodium sulfite is the 1/10 of the total addition of addition sodium sulfite per minute, after having added, continues
Soaking 5min, use ultrasonic wave concussion to process in immersion process, ultrasonic frequency is 30KHz；
(2) aluminum, by step (1) handled well uses clear water to rinse, hydraulic pressure 10kg/cm in flushing process2, by aluminum surface at 25 DEG C
Lower drying, uses passivating solution A to process 2-3min at 28 DEG C, then uses passivating solution B to process 10min at 32 DEG C, described blunt
Change liquid A be made up of following raw material by weight: the Fluohydric acid. of mass fraction 25% 15 parts, 8 parts of the sulphuric acid of 50%, fluotitanic acid 1.2 parts,
4.6 parts of potassium permanganate, 22 parts of water；Described passivating solution B is made up of following raw material by weight: coloured glaze base benzothiazole 8 parts, acetic acid second
Ester 15 parts, benzene sulfonic acid sodium salt 1.2 parts, the hydrogen peroxide 30 parts of mass fraction 35%, 4 parts of the sulphuric acid of mass fraction 40%, 50 parts of water.
Aluminum processed by the invention, under conditions of PH is 3, starts etching time than the corrosion after conventional autoxidation
Time lengthening 400-600h, substantially prolongs the corrosion resistant time, and meanwhile, passivation layer uses burlap at 15kg/cm2Pressure under
Processing 500h, passivation layer does not falls off.
Embodiment 2
After embodiment 1 processes, applying coating after step (2) has processed on aluminum surface, described coating is by weight by following
Raw material is made: water soluble acrylic resin 42 parts, ethyl acetate 18 parts, polyurethane copolymer 18 parts, graphene microchip 1.2 parts,
Nano phase ag_2 o 0.6 part, polyoxyethylene polyoxy propanol amidogen ether 0.8 part, Ketohexamethylene 15 parts, pigment 1.5 parts.The present invention is in coating
Adding graphene microchip and nano phase ag_2 o, improve wearability and the stability of coating, the intensity of coating and adhesive property are also
Get a promotion, and anti-wear performance be good, when for body-building apparatus, be often often worn out, use the application coating, can in case
Only cause aluminum to accelerate corrosion after abrasion, after using the coating of the present invention to process, make the corrosion-resistant time of aluminum promote more than 3 times, resistance to
Mill property promotes the most further.
Embodiment 3
After embodiment 1 processes, applying coating after step (2) has processed on aluminum surface, described coating is by weight by following
Raw material is made: water soluble acrylic resin 45 parts, ethyl acetate 18 parts, polyurethane copolymer 20 parts, graphene microchip 1.4 parts,
Nano phase ag_2 o 0.6 part, polyoxyethylene polyoxy propanol amidogen ether 0.9 part, Ketohexamethylene 15 parts, pigment 1.2 parts.
Claims (2)
1. the surface treatment method of an aluminum, it is characterised in that comprise the following steps:
(1), by aluminum put in soaking compartment use 25 DEG C, mass fraction be 1.5% citric acid solution immersion treatment 2-3min, so
Rear use soft cloth wiping aluminum surface, and use clear water to rinse well, the boric acid solution then using mass fraction to be 0.2% in aluminum
Cleaning, constantly add sodium sulfite in cleaning process in boric acid solution, sodium sulfite addition is boric acid solution weight
0.5%, the addition speed of sodium sulfite is the 1/10 of the total addition of addition sodium sulfite per minute, after having added, continues to soak
5min, uses ultrasonic wave concussion to process in immersion process, ultrasonic frequency is 30KHz；
(2) aluminum, by step (1) handled well uses clear water to rinse, hydraulic pressure 10kg/cm in flushing process2, aluminum is dried at 25 DEG C
Dry, use passivating solution A to process 2-3min at 28 DEG C, then use passivating solution B to process 10min, described passivating solution at 32 DEG C
A is made up of following raw material by weight: the Fluohydric acid. of mass fraction 25% 15 parts, 8 parts of the sulphuric acid of 50%, fluotitanic acid 1.2 parts, Gao Meng
Acid 4.6 parts of potassium, 22 parts of water；Described passivating solution B is made up of following raw material by weight: coloured glaze base benzothiazole 8 parts, ethyl acetate 15
Part, the hydrogen peroxide 30 parts of benzene sulfonic acid sodium salt 1.2 parts, mass fraction 35%, 4 parts of the sulphuric acid of mass fraction 40%, 50 parts of water.
The surface treatment method of a kind of aluminum the most according to claim 1, it is characterised in that: after step (2) has processed
Apply coating on aluminum surface, described coating is made up of following raw material by weight: water soluble acrylic resin's 40-45 part, acetic acid
Ethyl ester 15-20 part, polyurethane copolymer 18-20 part, graphene microchip 1-1.5 part, nano phase ag_2 o 0.5-0.8 part, polyoxy second
Alkene polyoxy propanol amidogen ether 0.8-1 part, Ketohexamethylene 14-16 part, pigment 1-2 part.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610433708.5A CN106086844A (en) | 2016-06-18 | 2016-06-18 | A kind of surface treatment method of aluminum |
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| CN201610433708.5A CN106086844A (en) | 2016-06-18 | 2016-06-18 | A kind of surface treatment method of aluminum |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756933A (en) * | 2016-12-28 | 2017-05-31 | 河南恒润昌环保科技有限公司 | A kind of aluminium alloy chrome-free tanning agent and preparation method thereof |
| CN107217248A (en) * | 2017-08-09 | 2017-09-29 | 广东尔航实业有限公司 | Passivation for stainless steel liquid and its passivation new technology |
| CN108607784A (en) * | 2018-05-04 | 2018-10-02 | 肥西县碧涛建材有限公司 | A kind of aluminium shape surface impregnation |
| CN108796578A (en) * | 2018-05-30 | 2018-11-13 | 江苏寅凯照明科技有限公司 | A kind of formula and technique substituting aluminium alloy light pole anodic oxidation |
| CN114042739A (en) * | 2021-12-02 | 2022-02-15 | 福建高全建材科技有限公司 | Recycling process of aluminum template |
| CN116815171A (en) * | 2023-07-19 | 2023-09-29 | 四川亨通兴达科技有限公司 | Chromium-free passivating agent for aluminum piece and chromium-free passivating treatment process for aluminum piece |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756933A (en) * | 2016-12-28 | 2017-05-31 | 河南恒润昌环保科技有限公司 | A kind of aluminium alloy chrome-free tanning agent and preparation method thereof |
| CN107217248A (en) * | 2017-08-09 | 2017-09-29 | 广东尔航实业有限公司 | Passivation for stainless steel liquid and its passivation new technology |
| CN108607784A (en) * | 2018-05-04 | 2018-10-02 | 肥西县碧涛建材有限公司 | A kind of aluminium shape surface impregnation |
| CN108796578A (en) * | 2018-05-30 | 2018-11-13 | 江苏寅凯照明科技有限公司 | A kind of formula and technique substituting aluminium alloy light pole anodic oxidation |
| CN114042739A (en) * | 2021-12-02 | 2022-02-15 | 福建高全建材科技有限公司 | Recycling process of aluminum template |
| CN116815171A (en) * | 2023-07-19 | 2023-09-29 | 四川亨通兴达科技有限公司 | Chromium-free passivating agent for aluminum piece and chromium-free passivating treatment process for aluminum piece |
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Application publication date: 20161109 |