CN109385656A - A kind of aluminum alloy surface treatment process - Google Patents
A kind of aluminum alloy surface treatment process Download PDFInfo
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- CN109385656A CN109385656A CN201811171600.9A CN201811171600A CN109385656A CN 109385656 A CN109385656 A CN 109385656A CN 201811171600 A CN201811171600 A CN 201811171600A CN 109385656 A CN109385656 A CN 109385656A
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- aluminum alloy
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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
- C25D11/16—Pretreatment, e.g. desmutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
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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
- C25D11/24—Chemical after-treatment
- C25D11/243—Chemical after-treatment using organic dyestuffs
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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
- C25D11/24—Chemical after-treatment
- C25D11/246—Chemical after-treatment for sealing layers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a kind of aluminum alloy surface treatment process, first choice successively uses deionized water to aluminum alloy surface, acetone, ethyl alcohol in aluminum alloy surface greasy dirt and impurity cleared up accordingly, obtain corresponding more clean aluminum alloy surface, then take corresponding sodium hydroxide that corresponding water body is cooperated to stir into corresponding sodium hydroxide solution, the aluminum alloy surface after cleaning is carried out again using corresponding sodium hydroxide solution to clean and wipe accordingly, the natural oxide film that obstinate greasy dirt and aluminum alloy surface to aluminum alloy surface adherency are formed is removed accordingly, using corresponding activation, dyeing, sealing of hole, pattern processing, overlay film, effectively aluminium alloy can be protected accordingly, and corresponding color is more mellow and full, it can effectively prevent situations such as scratching accordingly, step design is close reasonable, with very Strong creativeness is suitble to promote.
Description
Technical field
The invention belongs to aluminium alloy process fields, and in particular to a kind of aluminum alloy surface treatment process.
Background technique
Aluminium content in the earth's crust is only second to oxygen and silicon, is one of metallic element of rich content, and aluminium and its alloy are excellent with its
Good characteristic is widely used in Aeronautics and Astronautics, building, mechanical equipment, bridge, vehicle, ship, household implements, electronics and sets
Various aspects, aluminium and its alloy such as standby have become a key player in Chinese national economy.As aluminium and its alloy are answered
Development, process for treating surface also correspondingly be in rapid growth period so that aluminum alloy surface processing technique obtained into
The perfect and optimization of one step.Aluminum alloy surface processing is related to multiple subjects, including metallography, chemistry, materialogy etc., aluminium and its
Alloy is in passive state in atmospheric environment, so adhesive force of traditional ferrous metal surface processing technique on its surface is bad,
It is difficult to reach satisfied protecting effect, while corresponding color is bad.
Summary of the invention
The purpose of the present invention is to provide a kind of aluminum alloy surface treatment process, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of aluminum alloy surface treatment process, specific to wrap
Include following steps:
S1, pretreatment: aluminum alloy surface is successively used deionized water, acetone, ethyl alcohol to the greasy dirt in aluminum alloy surface with
And impurity is cleared up accordingly, obtains corresponding more clean aluminum alloy surface；
S2, degreasing are with alkaline etching: taking corresponding sodium hydroxide that corresponding water body is cooperated to stir into corresponding sodium hydroxide molten
Liquid carries out the aluminum alloy surface after cleaning using corresponding sodium hydroxide solution to clean and wipe accordingly again, close to aluminium
The natural oxide film that the obstinate greasy dirt and aluminum alloy surface of gold surface adherency are formed is removed accordingly；
S3, anodic oxidation: corresponding aluminium alloy is placed in electrolyte solution, using electrolysis, forms its surface
Aluminum oxide film；
S4, activation: carrying out slight wiping to the aluminum oxide film that aluminum alloy surface is formed with corresponding acid solution, so that
The substance of some anode oxide films of aluminum alloy surface dissolves, so that the porosity of oxidation film increases, convenient for improving its suction
The ability of attached dye；
S5, dyeing: the aluminium alloy after anodic oxidation and activation is placed into preprepared organic dyestuff,
Hole in the aluminium oxide of aluminum alloy surface carries out corresponding physical absorption to corresponding organic dyestuff, the aluminium after being coloured
Alloy surface；
S6, sealing of hole: the aluminium alloy after dyeing is placed into medium temperature hole sealing agent deployed in advance, corresponding hole sealing agent
Hydration reaction corresponding with the generation of the anode oxide film of aluminum alloy surface carries out the anode oxide film of aluminum alloy surface corresponding
Sealing of hole, so that its is no longer easy the corresponding impurity of absorption；
S7, pattern processing: in order to reach better aesthetic effect, need the progress on brush machine corresponding according to corresponding
Wire drawing process, or by sand-blasting machine to after sealing of hole aluminium alloy carry out blasting treatment；
S8, overlay film: carrying out corresponding overlay film to aluminium alloy by laminating machine, receives destruction or scuffing to reduce it
Probability.
Preferably, the acetone is miscible among ethyl alcohol, and the concentration of the sodium hydroxide solution is higher than 0.1mol/L,
It needs for aluminium alloy to be placed into 30s in sodium hydroxide solvent before when being cleaned accordingly.
Preferably, sulfo group organic acid can also be used using sulfuric acid in the electrolyte solution or mixed acid carries out corresponding generation
It replaces, the form of the anodic oxidation uses direct current anodic oxidation.
Preferably, it needs to be electrolysed accordingly according to corresponding anode oxide film thickness control during the S3
Time, while the thickness for carrying out the anodic oxidation mould that overturning appropriate guarantees that its surface is formed to the surface of aluminium alloy is uniform, institute
The anode oxide film of formation is with a thickness of 10-15um.
Preferably, the S5 should be carried out at once after S4 step, must not be immersed in corresponding already oxidised aluminium alloy
In water, guarantee not allowing to be cleaned with hot water to avoid oxidation film closing before dyeing, while also unavailable hand touches oxidation film.
Preferably, the water temperature control in the S6 is at 50 DEG C -70 DEG C, and corresponding hole sealing agent is mainly by nickel acetate, suppression ash
Agent, pH value buffer agent, promotor, surfactant, complexing agent etc. are at being grouped as.
Preferably, the wire drawing process in the S7 needs to draw with the optional straight burr wire drawing of occasion, random line according to corresponding
Silk, screw thread wire drawing, ripple wire drawing and lira wire drawing.
It preferably, further include the allotment to acetone and ethyl alcohol and corresponding water mixing in the S1 pre-treatment step
Form corresponding cleaning solvent.
It preferably, further include laser processing processing or nano-structured processing in the S7 pattern processing, by described
Laser processing handle and in aluminum alloy surface form the hole of multiple micro-meter scales, existed by the nano-structured processing
Aluminum alloy surface forms the hole or particle of multiple nanoscales.
Beneficial effects of the present invention: the invention passes through pretreatment degreasing and alkaline etching, anodic oxidation, activation, dye accordingly
Color, sealing of hole, pattern processing, overlay film corresponding step can effectively clear up the surface of aluminium alloy accordingly, while
Aluminum alloy surface is capable of forming one layer of firm protective layer, can effectively be protected accordingly to aluminium alloy, and corresponding
Color it is more mellow and full, can effectively prevent situations such as scratching accordingly, step design is close reasonable, has very strong wound
The property made is suitble to promote.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, right below in conjunction with specific embodiment
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
The present invention provides a kind of aluminum alloy surface treatment process, specifically includes the following steps:
S1, pretreatment: aluminum alloy surface is successively used deionized water, acetone, ethyl alcohol to the greasy dirt in aluminum alloy surface with
And impurity is cleared up accordingly, obtains corresponding more clean aluminum alloy surface；
S2, degreasing are with alkaline etching: taking corresponding sodium hydroxide that corresponding water body is cooperated to stir into corresponding sodium hydroxide molten
Liquid carries out the aluminum alloy surface after cleaning using corresponding sodium hydroxide solution to clean and wipe accordingly again, close to aluminium
The natural oxide film that the obstinate greasy dirt and aluminum alloy surface of gold surface adherency are formed is removed accordingly；
S3, anodic oxidation: corresponding aluminium alloy is placed in electrolyte solution, using electrolysis, forms its surface
Aluminum oxide film；
S4, activation: carrying out slight wiping to the aluminum oxide film that aluminum alloy surface is formed with corresponding acid solution, so that
The substance of some anode oxide films of aluminum alloy surface dissolves, so that the porosity of oxidation film increases, convenient for improving its suction
The ability of attached dye；
S5, dyeing: the aluminium alloy after anodic oxidation and activation is placed into preprepared organic dyestuff,
Hole in the aluminium oxide of aluminum alloy surface carries out corresponding physical absorption to corresponding organic dyestuff, the aluminium after being coloured
Alloy surface；
S6, sealing of hole: the aluminium alloy after dyeing is placed into medium temperature hole sealing agent deployed in advance, corresponding hole sealing agent
Hydration reaction corresponding with the generation of the anode oxide film of aluminum alloy surface carries out the anode oxide film of aluminum alloy surface corresponding
Sealing of hole, so that its is no longer easy the corresponding impurity of absorption；
S7, pattern processing: in order to reach better aesthetic effect, need the progress on brush machine corresponding according to corresponding
Wire drawing process, or by sand-blasting machine to after sealing of hole aluminium alloy carry out blasting treatment；
S8, overlay film: carrying out corresponding overlay film to aluminium alloy by laminating machine, receives destruction or scuffing to reduce it
Probability.
Specifically, the acetone is miscible among ethyl alcohol, the concentration of the sodium hydroxide solution is higher than 0.1mol/L,
It needs for aluminium alloy to be placed into 30s in sodium hydroxide solvent before when being cleaned accordingly.
Specifically, sulfo group organic acid can also be used using sulfuric acid for the electrolyte solution or mixed acid carries out corresponding generation
It replaces, the form of the anodic oxidation uses direct current anodic oxidation.
Specifically, needing to be electrolysed accordingly according to corresponding anode oxide film thickness control during the S3
Time, while the thickness for carrying out the anodic oxidation mould that overturning appropriate guarantees that its surface is formed to the surface of aluminium alloy is uniform, institute
The anode oxide film of formation is with a thickness of 10-15um.
Specifically, the S5 should be carried out at once after S4 step, corresponding already oxidised aluminium alloy must not be immersed in
In water, guarantee not allowing to be cleaned with hot water to avoid oxidation film closing before dyeing, while also unavailable hand touches oxidation film.
Specifically, the water temperature control in the S6 is at 50 DEG C -70 DEG C, corresponding hole sealing agent is mainly by nickel acetate, suppression ash
Agent, pH value buffer agent, promotor, surfactant, complexing agent etc. are at being grouped as.
Specifically, the wire drawing process in the S7 needs to draw with the optional straight burr wire drawing of occasion, random line according to corresponding
Silk, screw thread wire drawing, ripple wire drawing and lira wire drawing.
Specifically, further including the allotment to acetone and ethyl alcohol and corresponding water mixing in the S1 pre-treatment step
Form corresponding cleaning solvent.
Specifically, further including laser processing processing or nano-structured processing in the S7 pattern processing, by described
Laser processing handle and in aluminum alloy surface form the hole of multiple micro-meter scales, existed by the nano-structured processing
Aluminum alloy surface forms the hole or particle of multiple nanoscales.
In conclusion a kind of aluminum alloy surface treatment process of the present invention, with traditional aluminum alloy surface treatment process phase
Than corresponding step is more reasonable, corresponding by dispelling accordingly with pretreatment cleaning corresponding to aluminum alloy surface progress
Greasy dirt and impurity, then carry out corresponding degreasing and alkaline etching to the stain and its surface natural shape in aluminum alloy surface
At oxidation film crystal cleared up accordingly, cooperate corresponding acid solution shape after for clearance by way of DC electrolysis
At corresponding positive machine oxidation film, more uniformly, color is more preferable, after cooperating corresponding acid solution to activate it accordingly,
Corresponding organic dyestuff is cooperated to contaminate the anode oxide film of aluminum alloy surface accordingly using traditional chemical staining methods
Color, corresponding dyeing effect more preferably, and carry out subsequent sealing of hole in such a way that medium temperature is hydrated, and corresponding low energy consumption, envelope
Hole fast speed, sealing of hole excellent effect, and main hole sealing agent are nickel acetate, and corresponding stability with great difficulty controls, and meet environmental protection
Theory, and there is corresponding pattern to handle subsequent, corresponding careful processing effectively can be carried out to aluminum alloy surface, it can
Enable whole more beautiful and effectively aluminum alloy surface is protected accordingly by last coating processing
Shield avoids subsequent corresponding situations such as scratching of appearance during transportation, and step is rationally compact, has corresponding creativeness, fits
It closes and promotes.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not limited to this hair
It is bright, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, according to
It is so possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equal
Replacement, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (9)
1. a kind of aluminum alloy surface treatment process, it is characterised in that: specifically includes the following steps:
S1, pretreatment: successively use aluminum alloy surface deionized water, acetone, ethyl alcohol to greasy dirt in aluminum alloy surface and miscellaneous
Matter is cleared up accordingly, obtains corresponding more clean aluminum alloy surface；
S2, degreasing are with alkaline etching: taking corresponding sodium hydroxide that corresponding water body is cooperated to stir into corresponding sodium hydroxide solution, use
Corresponding sodium hydroxide solution carries out the aluminum alloy surface after cleaning to clean and wipe accordingly again, viscous to aluminum alloy surface
The natural oxide film that attached obstinate greasy dirt and aluminum alloy surface are formed is removed accordingly；
S3, anodic oxidation: corresponding aluminium alloy is placed in electrolyte solution, using electrolysis, its surface is made to form oxidation
Aluminium film；
S4, activation: slight wiping is carried out to the aluminum oxide film that aluminum alloy surface is formed with corresponding acid solution, so that aluminium alloy
The substance of some anode oxide films on surface dissolves, so that the porosity of oxidation film increases, adsorbs dyestuff convenient for improving it
Ability；
S5, dyeing: the aluminium alloy after anodic oxidation and activation is placed into preprepared organic dyestuff, aluminium alloy
Hole in the aluminium oxide on surface carries out corresponding physical absorption to corresponding organic dyestuff, the aluminium alloy table after being coloured
Face；
S6, sealing of hole: the aluminium alloy after dyeing being placed into medium temperature hole sealing agent deployed in advance, and corresponding hole sealing agent and aluminium close
The anode oxide film of gold surface generates corresponding hydration reaction, carries out corresponding sealing of hole to the anode oxide film of aluminum alloy surface,
It is set no longer to be easy the corresponding impurity of absorption；
S7, pattern processing: in order to reach better aesthetic effect, corresponding wire drawing is carried out on brush machine according to corresponding needs
Processing, or blasting treatment is carried out to the aluminium alloy after sealing of hole by sand-blasting machine；
S8, overlay film: corresponding overlay film is carried out to aluminium alloy by laminating machine, to reduce its probability for receiving destruction or scuffing.
2. a kind of aluminum alloy surface treatment process according to claim 1, it is characterised in that: the acetone is miscible in ethyl alcohol
Among, the concentration of the sodium hydroxide solution is higher than 0.1mol/L, needs to put aluminium alloy before when being cleaned accordingly
It sets into 30s in sodium hydroxide solvent.
3. a kind of aluminum alloy surface treatment process according to claim 1, it is characterised in that: the electrolyte solution uses
Sulfo group organic acid can also be used in sulfuric acid or mixed acid is accordingly replaced, and the form of the anodic oxidation uses direct current anode
Oxidation.
4. a kind of aluminum alloy surface treatment process according to claim 1, it is characterised in that: needed during the S3
According to the corresponding corresponding electrolysis time of anode oxide film thickness control, while overturning appropriate is carried out to the surface of aluminium alloy and is protected
The thickness for demonstrate,proving the anodic oxidation mould of its surface formation is uniform, is formed by anode oxide film with a thickness of 10-15um.
5. a kind of aluminum alloy surface treatment process according to claim 1, it is characterised in that: the S5 should be in S4 step
Carry out, corresponding already oxidised aluminium alloy must not be impregnated in water at once afterwards, guarantee not allow before dyeing with hot water clean with
Oxidation film is avoided to close, while also unavailable hand touches oxidation film.
6. a kind of aluminum alloy surface treatment process according to claim 1, it is characterised in that: the water temperature control in the S6
At 50 DEG C -70 DEG C, corresponding hole sealing agent is mainly by nickel acetate, suppression grey agent, pH value buffer agent, promotor, surfactant, network
Mixture etc. is at being grouped as.
7. a kind of aluminum alloy surface treatment process according to claim 1, it is characterised in that: the wire drawing process in the S7
Need to may be selected straight burr wire drawing, random line wire drawing, screw thread wire drawing, ripple wire drawing and lira wire drawing with occasion according to corresponding.
8. a kind of aluminum alloy surface treatment process according to claim 1, it is characterised in that: in the S1 pre-treatment step
It further include that the allotment to acetone and ethyl alcohol with corresponding water mixing forms corresponding cleaning solvent.
9. a kind of aluminum alloy surface treatment process according to claim 1, it is characterised in that: in the S7 pattern processing also
Including laser processing processing or nano-structured processing, handled by the laser processing formed in aluminum alloy surface it is multiple
The hole of micro-meter scale, by the nano-structured processing aluminum alloy surface formed multiple nanoscales hole or
Grain.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109797419A (en) * | 2019-04-01 | 2019-05-24 | 长沙集智创新工业设计有限公司 | A kind of aluminium alloy section surface bloom corrosion-resistance treatment technique |
| CN109913926A (en) * | 2019-04-17 | 2019-06-21 | 安徽华淮新材料有限公司 | Aluminium alloy anode oxide film hole sealing agent and its method for sealing |
| CN115355515A (en) * | 2022-09-02 | 2022-11-18 | 生态环境部南京环境科学研究所 | Spray roasting process for waste acid liquor treatment |
| CN115595594A (en) * | 2022-10-20 | 2023-01-13 | 南通鑫源电器制造有限公司（Cn） | Surface treatment process for recycling aluminum alloy with high grease degree on surface |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109797419A (en) * | 2019-04-01 | 2019-05-24 | 长沙集智创新工业设计有限公司 | A kind of aluminium alloy section surface bloom corrosion-resistance treatment technique |
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| CN115355515A (en) * | 2022-09-02 | 2022-11-18 | 生态环境部南京环境科学研究所 | Spray roasting process for waste acid liquor treatment |
| CN115595594A (en) * | 2022-10-20 | 2023-01-13 | 南通鑫源电器制造有限公司（Cn） | Surface treatment process for recycling aluminum alloy with high grease degree on surface |
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