CN107904643A - A kind of anodic oxidation aluminium section bar and its preparation process - Google Patents
A kind of anodic oxidation aluminium section bar and its preparation process Download PDFInfo
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- CN107904643A CN107904643A CN201711238768.2A CN201711238768A CN107904643A CN 107904643 A CN107904643 A CN 107904643A CN 201711238768 A CN201711238768 A CN 201711238768A CN 107904643 A CN107904643 A CN 107904643A
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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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- 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
- C25D11/024—Anodisation under pulsed or modulated current or potential
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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
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
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Abstract
The invention belongs to anode oxidation method technology field, more particularly to a kind of anodic oxidation aluminium section bar and its preparation process, wherein aluminium section bar includes aluminium section bar basal layer, and the oxidation film layer being arranged in the layer surface of the aluminium section bar basis, and the thickness of the oxidation film layer is 12 15 μm；Technique comprises the following steps：S1, alkali liquor oil removing simultaneously carry out first wash；S2, acid solution neutralize and carry out second wash；S3, carry out physics, chemical formula polishing treatment successively, and carries out third time washing；S4, surface roughening treatment simultaneously carry out the 4th washing；S5, electrolytic oxidation simultaneously carry out the 5th washing, finally dry and anodic oxidation aluminium section bar is made.The present invention has that anodic oxidation is easy to operate, and oxide-film molding effect is good, and oxide-film using effect is good, anti-strike, the advantages of corrosion resistance is strong.
Description
Technical field
The invention belongs to anode oxidation method technology field, more particularly to a kind of anodic oxidation aluminium section bar and its preparation
Technique.
Background technology
With the continuous development of aluminum products processing industry, anodic oxidation or chemistry are industrially used more and more widely
The method of oxidation, in aluminium and articles made of aluminium alloy Surface Creation layer oxide film, to achieve the purpose that protection and decoration.Through anode
The oxide-film that oxidation processes obtain, its film layer also have like lower characteristic：（1）Hardness is higher；(2) there is higher corrosion resistance；(3) have
Stronger adsorption capacity；（4）There is good insulation performance；(5) adiabatic heat resistanceheat resistant performance is strong.In conclusion aluminium and aluminium alloy are through sun
After the oxidation processes of pole, there is the characteristics such as good protection and decoration in the oxide-film that its surface is formed.Therefore, it is widely used in
Aviation, electric, electronics, machine-building and light industry industry etc..
The Chinese invention patent that Patent publication No is 103668383 A of CN, date of publication is 2014.03.26 discloses one kind
Aluminium alloy anode oxide technique, the invention based on sulfuric acid, additive using being formulated, for sulfuric acid concentration, additive concentration, temperature
Six factors such as degree, oxidization time and current strength, carry out orthogonal test and obtain optimal anode oxidation process conditions, aluminium alloy passes through
After anodized, fresh active oxidation film layer has been obtained.
But anode oxidation process in the patent of invention exists and operates that complicated, difficulty is big, and shaped alumina film uses
The problem of effect is poor.
The content of the invention
The object of the present invention is to provide a kind of anodic oxidation aluminium section bar and its preparation process, it can pass through alkali liquor oil removing, acid
This 5 steps of liquid neutralization, polishing treatment, surface roughening and electrolytic oxidation, 12-15 μm of oxidation is formed in aluminium shape surface
Film layer, achievees the purpose that efficient anode aoxidizes.The present invention is easy to operate with anodic oxidation, and oxide-film molding effect is good,
And oxide-film using effect is good, anti-strike, the advantages of corrosion resistance is strong.
The solve the above problems technical solution of use of the present invention is：A kind of anodic oxidation aluminium section bar, including aluminium section bar basis
Layer, and the oxidation film layer being arranged in the layer surface of the aluminium section bar basis, the thickness of the oxidation film layer is 12-15 μm.
A kind of preparation process of anodic oxidation aluminium section bar as claimed in claim 1, comprises the following steps successively：
S1, alkali liquor oil removing simultaneously carry out first wash；
S2, acid solution neutralize and carry out second wash；
S3, carry out physics, chemical formula polishing treatment successively, and carries out third time washing；
S4, surface roughening treatment simultaneously carry out the 4th washing；
S5, electrolytic oxidation simultaneously carry out the 5th washing, finally dry and anodic oxidation aluminium section bar is made.
Further preferred technical solution is：In step S1, carry out lye with the potassium hydroxide solution of 0.6mol/L and remove
Oil, except oil temperature is 95-98 DEG C, the oil removing time is 3.5-4.5s.
Further preferred technical solution is：In step S2, with sulfuric acid pickling solution under 20-22 DEG C of environment pickling 12-
15s。
Further preferred technical solution is：In step S3, sulfuric acid-phosphorus is used in the chemical formula polishing of rear progress
Sour mixed type polishing solution, polish temperature are 52-55 DEG C.
Further preferred technical solution is：In step S4, the tank liquor of surface roughening is sour sand liquid, including concentration
For the ammonium acid fluoride of 1.8mol/L and the potassium nitrate of 1.2mol/L.
Further preferred technical solution is：In step S5, temperature is 15-17 DEG C, time 55-65min, wherein electricity
The concentration for solving tank liquor is 308-325g/L；Electrolytic acid cleaning oxydation process is divided into the progress of three phases, and early period, voltage was 24V, and current density is
3.0A/dm2, mid-life voltage 25V, current density 3.2A/dm2, later stage voltage is 22V, and current density is 2.6 A/dm2, its
Described in electrolytic oxidation mid-term process duration be 45-48min.
Further preferred technical solution is：The cell liquid includes following each component by weight：
Poly (sodium aspartate) 5.0-7.2%；
Potassium silicate 1.5-5.0%；
Sodium tetraborate 2.0-2.5%；
Cyclohexylamine 0.05-0.15%,
The solvent of the cell liquid is distilled water.
Further preferred technical solution is：The poly (sodium aspartate) during the early period of the electrolytic oxidation,
Weight accounting is 5.0-5.4%, and in the mid-term of the electrolytic oxidation and late stage, weight accounting is 5.2-7.2%.
Further preferred technical solution is：In step S5, drying temperature is 60 DEG C, drying time 70min.
The present invention by this 5 steps of alkali liquor oil removing, acid solution neutralization, polishing treatment, surface roughening and electrolytic oxidation,
12-15 μm of oxidation film layer is formed in aluminium shape surface, achievees the purpose that efficient anode aoxidizes.The present invention has anodic oxidation behaviour
Make convenient and efficient, oxide-film molding effect is good, and oxide-film using effect is good, anti-strike, the advantages of corrosion resistance is strong.
Embodiment
As described below is only presently preferred embodiments of the present invention, non-that the scope of the present invention is defined.
Embodiment 1：A kind of anodic oxidation aluminium section bar, including aluminium section bar basal layer, and it is arranged on the aluminium section bar basis
Oxidation film layer in layer surface, the thickness of the oxidation film layer is 12 μm.
In the prior art, when oxide thickness is too small, its shock resistance and corrosion resistance is easily influenced, works as oxygen
When change film thickness is excessive, easily there is the problem of oxide-film poor adhesive force itself, in the present embodiment, 12-15 μm of the oxygen
Change thicknesses of layers, ensure the using effect of the anodic oxidation aluminium section bar.
A kind of preparation process of anodic oxidation aluminium section bar, comprises the following steps successively：
S1, alkali liquor oil removing, alkali liquor oil removing is carried out with the potassium hydroxide solution of 0.6mol/L, except oil temperature is 95 DEG C, the oil removing time
For 3.5s and carry out first wash；
S2, acid solution neutralize, and pickling 12s and second wash is carried out under 20 DEG C of environment with sulfuric acid pickling solution；
S3, carry out physics, chemical formula polishing treatment successively, wherein chemical formula polishing is polished using sulfuric-phosphoric mixed type
With solution, polish temperature is 52 DEG C, and third time washing is carried out after chemical formula polishing has been carried out；
The tank liquor of S4, surface roughening treatment, wherein surface roughening is sour sand liquid, including the fluorination that concentration is 1.8mol/L
The potassium nitrate of hydrogen ammonium and 1.2mol/L, thereafter and carry out the 4th time washing；
S5, electrolytic oxidation simultaneously carry out the 5th washing, finally dry and anodic oxidation aluminium section bar is made, wherein cell liquid temperature is protected
To hold as 15 DEG C, the cell liquid concentration is 308 g/L, and whole electrolytic acid cleaning oxydation process includes electrolysis procedure early period of 6min,
The mid-term electrolysis procedure of 45min and the later stage electrolysis procedure of 4min, in electrolysis procedure early period, voltage 24V, electric current
Density is 3.0A/dm2, in the mid-term electrolysis procedure, voltage 25V, current density 3.2A/dm2, the later stage electrolysis behaviour
In work, voltage 22V, current density 2.6A/dm2。
In the present embodiment, electrolysis procedure early period is used to form the oxidation film layer on the aluminium section bar basal layer
Substrate, ensure that the oxidation film layer is not easily to fall off, in the mid-term electrolysis procedure be used for form the oxygen on the substrate
Change the agent structure of film layer, wherein the structure of the oxidation film layer 95% is formed in the mid-term electrolysis procedure, after finally described
Phase electrolysis procedure is used to form oxide-film outer layer in the agent structure, by the gap structure of outer layer, ensures the anode
Aluminium oxide section bar subsequently has the advantages that coloring effect is good.The present embodiment substitutes existing skill using the electrolytic method of three sections of timesharing
General one-step electrolysis method in art so that the oxidation film layer is with intensity is excessive, fixed effect is more preferable and conveniently colours
The advantages of dyeing.
In addition, in step s 5, in electrolysis procedure early period, the cell liquid includes 5.0% by weight
Poly (sodium aspartate)；1.5% potassium silicate；2.0% sodium tetraborate and 0.05% cyclohexylamine, and solvent is distilled water, in institute
State in mid-term electrolysis procedure and later stage electrolysis procedure, will by way of adding poly (sodium aspartate) and solvent distilled water
The weight content of the poly (sodium aspartate) is promoted to 5.2% and keeps the cell liquid concentration to remain within 308 g/L.
In the present embodiment, the poly (sodium aspartate) is used for the molding effect for ensureing the oxidation film layer, plays main
Anode electrolysis oxidation operation, can the middle and later periods increase poly (sodium aspartate) absolute content by way of come ensure oxidation effect
Fruit, on the other hand, when the cell liquid concentration is excessive, then it is too fast to occur that oxide-film is formed, forms asking for insufficient strength
Topic, so while addition polymerization NaAsp, by water supply way, stablizes the cell liquid concentration to control, final to protect
Demonstrate,prove anodic oxidation effect.
In the present embodiment, the polishing treatment and surface roughening treatment, for ensureing the oxidation film layer in shape
Bonding strength between aluminium section bar basal layer described in Cheng Houyu, avoids the oxidation film layer from flaky problem occur.
On the other hand, in the present embodiment, the second wash, third time washing, the 4th washing and the 5th time
Washing is the washing of room temperature clear water, and thorough washing times are at least 3 times, and first wash operation is washed for hot water, heat
Coolant-temperature gage is 82 DEG C, and drying temperature is 60 DEG C in step S5, drying time 70min.
Embodiment 2：A kind of anodic oxidation aluminium section bar, including aluminium section bar basal layer, and it is arranged on the aluminium section bar basis
Oxidation film layer in layer surface, the thickness of the oxidation film layer is 13 μm.
In the prior art, when oxide thickness is too small, its shock resistance and corrosion resistance is easily influenced, works as oxygen
When change film thickness is excessive, easily there is the problem of oxide-film poor adhesive force itself, in the present embodiment, 12-15 μm of the oxygen
Change thicknesses of layers, ensure the using effect of the anodic oxidation aluminium section bar.
A kind of preparation process of anodic oxidation aluminium section bar, comprises the following steps successively：
S1, alkali liquor oil removing, alkali liquor oil removing is carried out with the potassium hydroxide solution of 0.6mol/L, except oil temperature is 97 DEG C, the oil removing time
For 4.0s and carry out first wash；
S2, acid solution neutralize, and pickling 13s and second wash is carried out under 21 DEG C of environment with sulfuric acid pickling solution；
S3, carry out physics, chemical formula polishing treatment successively, wherein chemical formula polishing is polished using sulfuric-phosphoric mixed type
With solution, polish temperature is 53 DEG C, and third time washing is carried out after chemical formula polishing has been carried out；
The tank liquor of S4, surface roughening treatment, wherein surface roughening is sour sand liquid, including the fluorination that concentration is 1.8mol/L
The potassium nitrate of hydrogen ammonium and 1.2mol/L, thereafter and carry out the 4th time washing；
S5, electrolytic oxidation simultaneously carry out the 5th washing, finally dry and anodic oxidation aluminium section bar is made, wherein cell liquid temperature is protected
To hold as 16 DEG C, the cell liquid concentration is 320 g/L, and whole electrolytic acid cleaning oxydation process includes electrolysis procedure early period of 9min,
The mid-term electrolysis procedure of 46min and the later stage electrolysis procedure of 5min, in electrolysis procedure early period, voltage 24V, electric current
Density is 3.0A/dm2, in the mid-term electrolysis procedure, voltage 25V, current density 3.2A/dm2, the later stage electrolysis behaviour
In work, voltage 22V, current density 2.6A/dm2。
In the present embodiment, electrolysis procedure early period is used to form the oxidation film layer on the aluminium section bar basal layer
Substrate, ensure that the oxidation film layer is not easily to fall off, in the mid-term electrolysis procedure be used for form the oxygen on the substrate
Change the agent structure of film layer, wherein the structure of the oxidation film layer 95% is formed in the mid-term electrolysis procedure, after finally described
Phase electrolysis procedure is used to form oxide-film outer layer in the agent structure, by the gap structure of outer layer, ensures the anode
Aluminium oxide section bar subsequently has the advantages that coloring effect is good.The present embodiment substitutes existing skill using the electrolytic method of three sections of timesharing
General one-step electrolysis method in art so that the oxidation film layer is with intensity is excessive, fixed effect is more preferable and conveniently colours
The advantages of dyeing.
In addition, in step s 5, in electrolysis procedure early period, the cell liquid includes 5.2% by weight
Poly (sodium aspartate)；3.5% potassium silicate；2.2% sodium tetraborate and 0.08% cyclohexylamine, and solvent is distilled water, in institute
State in mid-term electrolysis procedure and later stage electrolysis procedure, will by way of adding poly (sodium aspartate) and solvent distilled water
The weight content of the poly (sodium aspartate) is promoted to 6.0% and keeps the cell liquid concentration to remain within 320 g/L.
In the present embodiment, the poly (sodium aspartate) is used for the molding effect for ensureing the oxidation film layer, plays main
Anode electrolysis oxidation operation, can the middle and later periods increase poly (sodium aspartate) absolute content by way of come ensure oxidation effect
Fruit, on the other hand, when the cell liquid concentration is excessive, then it is too fast to occur that oxide-film is formed, forms asking for insufficient strength
Topic, so while addition polymerization NaAsp, by water supply way, stablizes the cell liquid concentration to control, final to protect
Demonstrate,prove anodic oxidation effect.
In the present embodiment, the polishing treatment and surface roughening treatment, for ensureing the oxidation film layer in shape
Bonding strength between aluminium section bar basal layer described in Cheng Houyu, avoids the oxidation film layer from flaky problem occur.
On the other hand, in the present embodiment, the second wash, third time washing, the 4th washing and the 5th time
Washing is the washing of room temperature clear water, and thorough washing times are at least 3 times, and first wash operation is washed for hot water, heat
Coolant-temperature gage is 82 DEG C, and drying temperature is 60 DEG C in step S5, drying time 70min.
Embodiment 3：A kind of anodic oxidation aluminium section bar, including aluminium section bar basal layer, and it is arranged on the aluminium section bar basis
Oxidation film layer in layer surface, the thickness of the oxidation film layer is 15 μm.
In the prior art, when oxide thickness is too small, its shock resistance and corrosion resistance is easily influenced, works as oxygen
When change film thickness is excessive, easily there is the problem of oxide-film poor adhesive force itself, in the present embodiment, 12-15 μm of the oxygen
Change thicknesses of layers, ensure the using effect of the anodic oxidation aluminium section bar.
A kind of preparation process of anodic oxidation aluminium section bar, comprises the following steps successively：
S1, alkali liquor oil removing, alkali liquor oil removing is carried out with the potassium hydroxide solution of 0.6mol/L, except oil temperature is 98 DEG C, the oil removing time
For 4.5s and carry out first wash；
S2, acid solution neutralize, and pickling 15s and second wash is carried out under 22 DEG C of environment with sulfuric acid pickling solution；
S3, carry out physics, chemical formula polishing treatment successively, wherein chemical formula polishing is polished using sulfuric-phosphoric mixed type
With solution, polish temperature is 55 DEG C, and third time washing is carried out after chemical formula polishing has been carried out；
The tank liquor of S4, surface roughening treatment, wherein surface roughening is sour sand liquid, including the fluorination that concentration is 1.8mol/L
The potassium nitrate of hydrogen ammonium and 1.2mol/L, thereafter and carry out the 4th time washing；
S5, electrolytic oxidation simultaneously carry out the 5th washing, finally dry and anodic oxidation aluminium section bar is made, wherein cell liquid temperature is protected
To hold as 17 DEG C, the cell liquid concentration is 325 g/L, and whole electrolytic acid cleaning oxydation process includes electrolysis procedure early period of 10min,
The mid-term electrolysis procedure of 48min and the later stage electrolysis procedure of 2min, in electrolysis procedure early period, voltage 24V, electric current
Density is 3.0A/dm2, in the mid-term electrolysis procedure, voltage 25V, current density 3.2A/dm2, the later stage electrolysis behaviour
In work, voltage 22V, current density 2.6A/dm2。
In the present embodiment, electrolysis procedure early period is used to form the oxidation film layer on the aluminium section bar basal layer
Substrate, ensure that the oxidation film layer is not easily to fall off, in the mid-term electrolysis procedure be used for form the oxygen on the substrate
Change the agent structure of film layer, wherein the structure of the oxidation film layer 95% is formed in the mid-term electrolysis procedure, after finally described
Phase electrolysis procedure is used to form oxide-film outer layer in the agent structure, by the gap structure of outer layer, ensures the anode
Aluminium oxide section bar subsequently has the advantages that coloring effect is good.The present embodiment substitutes existing skill using the electrolytic method of three sections of timesharing
General one-step electrolysis method in art so that the oxidation film layer is with intensity is excessive, fixed effect is more preferable and conveniently colours
The advantages of dyeing.
In addition, in step s 5, in electrolysis procedure early period, the cell liquid includes 5.4% by weight
Poly (sodium aspartate)；5.0% potassium silicate；2.5% sodium tetraborate and 0.15% cyclohexylamine, and solvent is distilled water, in institute
State in mid-term electrolysis procedure and later stage electrolysis procedure, will by way of adding poly (sodium aspartate) and solvent distilled water
The weight content of the poly (sodium aspartate) is promoted to 7.2% and keeps the cell liquid concentration to remain within 325 g/L.
In the present embodiment, the poly (sodium aspartate) is used for the molding effect for ensureing the oxidation film layer, plays main
Anode electrolysis oxidation operation, can the middle and later periods increase poly (sodium aspartate) absolute content by way of come ensure oxidation effect
Fruit, on the other hand, when the cell liquid concentration is excessive, then it is too fast to occur that oxide-film is formed, forms asking for insufficient strength
Topic, so while addition polymerization NaAsp, by water supply way, stablizes the cell liquid concentration to control, final to protect
Demonstrate,prove anodic oxidation effect.
In the present embodiment, the polishing treatment and surface roughening treatment, for ensureing the oxidation film layer in shape
Bonding strength between aluminium section bar basal layer described in Cheng Houyu, avoids the oxidation film layer from flaky problem occur.
On the other hand, in the present embodiment, the second wash, third time washing, the 4th washing and the 5th time
Washing is the washing of room temperature clear water, and thorough washing times are at least 3 times, and first wash operation is washed for hot water, heat
Coolant-temperature gage is 82 DEG C, and drying temperature is 60 DEG C in step S5, drying time 70min.
Embodiments of the present invention are explained in detail above, but the invention is not restricted to the above embodiment, in institute
State in the knowledge that technical field those of ordinary skill possesses, can also be made on the premise of present inventive concept is not departed from
Various modifications.These are all without creative modification, as long as being all subject to Patent Law in scope of the presently claimed invention
Protection.
Claims (10)
- A kind of 1. anodic oxidation aluminium section bar, it is characterised in that：Including aluminium section bar basal layer, and it is arranged on the aluminium section bar basis Oxidation film layer in layer surface, the thickness of the oxidation film layer is 12-15 μm.
- 2. a kind of preparation process of anodic oxidation aluminium section bar as claimed in claim 1, it is characterised in that comprise the following steps successively：S1, alkali liquor oil removing simultaneously carry out first wash；S2, acid solution neutralize and carry out second wash；S3, carry out physics, chemical formula polishing treatment successively, and carries out third time washing；S4, surface roughening treatment simultaneously carry out the 4th washing；S5, electrolytic oxidation simultaneously carry out the 5th washing, finally dry and anodic oxidation aluminium section bar is made.
- A kind of 3. preparation process of anodic oxidation aluminium section bar according to claim 2, it is characterised in that：In step S1, use The potassium hydroxide solution of 0.6mol/L carries out alkali liquor oil removing, and except oil temperature is 95-98 DEG C, the oil removing time is 3.5-4.5s.
- A kind of 4. preparation process of anodic oxidation aluminium section bar according to claim 2, it is characterised in that：In step S2, use Sulfuric acid pickling solution pickling 12-15s under 20-22 DEG C of environment.
- A kind of 5. preparation process of anodic oxidation aluminium section bar according to claim 2, it is characterised in that：In step S3, The chemical formula polishing carried out afterwards uses sulfuric-phosphoric mixed type polishing solution, and polish temperature is 52-55 DEG C.
- A kind of 6. preparation process of anodic oxidation aluminium section bar according to claim 2, it is characterised in that：In step S4, table The tank liquor of face roughening is sour sand liquid, including the ammonium acid fluoride and the potassium nitrate of 1.2mol/L that concentration is 1.8mol/L.
- A kind of 7. preparation process of anodic oxidation aluminium section bar according to claim 2, it is characterised in that：In step S5, temperature Spend for 15-17 DEG C, the concentration of time 55-65min, wherein cell liquid are 308-325g/L；Electrolytic acid cleaning oxydation process is divided into three Phase carries out, and early period, voltage was 24V, current density 3.0A/dm2, mid-life voltage 25V, current density 3.2A/dm2, the later stage Voltage is 22V, and current density is 2.6 A/dm2, wherein the electrolytic oxidation mid-term process duration is 45-48min.
- A kind of 8. preparation process of anodic oxidation aluminium section bar according to claim 7, it is characterised in that the cell liquid Including following each component by weight：Poly (sodium aspartate) 5.0-7.2%；Potassium silicate 1.5-5.0%；Sodium tetraborate 2.0-2.5%；Cyclohexylamine 0.05-0.15%,The solvent of the cell liquid is distilled water.
- A kind of 9. preparation process of anodic oxidation aluminium section bar according to claim 8, it is characterised in that：The poly- asparagus fern ammonia For sour sodium during the early period of the electrolytic oxidation, weight accounting is 5.0-5.4%, the electrolytic oxidation mid-term and after During phase, weight accounting is 5.2-7.2%.
- A kind of 10. preparation process of anodic oxidation aluminium section bar according to claim 2, it is characterised in that：In step S5, dry Dry temperature is 60 DEG C, drying time 70min.
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| CN109280950A (en) * | 2018-10-19 | 2019-01-29 | 肇庆亚洲铝厂有限公司 | The method and aluminum profile of production black aluminum profile are coloured using anodic oxidation single nickel salt |
| CN111394768A (en) * | 2020-04-10 | 2020-07-10 | 高瑞安 | Powder spraying aluminum product and surface treatment method thereof |
| CN113046808A (en) * | 2021-03-10 | 2021-06-29 | 江西凤凰光学科技有限公司 | Electrolytic coloring method for optical metal structural member |
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