CN110965103B - Composite anodic oxidation surface process and treatment device for aluminum profile - Google Patents
Composite anodic oxidation surface process and treatment device for aluminum profile Download PDFInfo
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- CN110965103B CN110965103B CN201911371766.XA CN201911371766A CN110965103B CN 110965103 B CN110965103 B CN 110965103B CN 201911371766 A CN201911371766 A CN 201911371766A CN 110965103 B CN110965103 B CN 110965103B
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 56
- 230000003647 oxidation Effects 0.000 title claims abstract description 45
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 45
- 239000002131 composite material Substances 0.000 title claims abstract description 29
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 53
- 239000003792 electrolyte Substances 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 10
- 238000006386 neutralization reaction Methods 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 8
- 239000002351 wastewater Substances 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 5
- 238000007743 anodising Methods 0.000 claims description 4
- 230000007547 defect Effects 0.000 claims description 4
- 239000008151 electrolyte solution Substances 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 4
- 238000005238 degreasing Methods 0.000 claims description 3
- 238000005554 pickling Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000004381 surface treatment Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000002048 anodisation reaction Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- C25D11/005—Apparatus specially adapted for electrolytic conversion coating
-
- 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
-
- 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 composite anodic oxidation surface treatment device for aluminum profiles, which comprises a box body and a box cover positioned at the top end of the box body, wherein a hanging ring is arranged in the middle of the top end of the box cover, a positive electrode current conducting plate and a negative electrode current conducting plate are symmetrically arranged on two sides in the box body, one side of the positive electrode current conducting plate, far away from the negative electrode current conducting plate, is connected with a positive electrode end positioned in the box body, one side of the negative electrode current conducting plate, far away from the positive electrode current conducting plate, is connected with a negative electrode end positioned in the box body, and a first upright post and a second upright post which are vertically arranged are symmetrically arranged on two sides of the box body. Has the beneficial effects that; the method has the advantages that a large amount of electrolyte is prevented from being accumulated on the surface of the aluminum profile, the electrolyte is prevented from moving along with the aluminum profile and dropping to each position of a production workshop, the working environment is guaranteed to be clean, and the burden of subsequent aluminum profile surface cleaning work is reduced; the forming effect of the oxide film is good, the using effect of the oxide film is good, the striking resistance and the corrosion resistance are strong, and the stability of the aluminum alloy section during oxidation is improved, so that the rejection rate in the later period is reduced.
Description
Technical Field
The invention relates to the technical field of aluminum alloy section processing, in particular to a composite anodic oxidation surface process and a treatment device for aluminum sections.
Background
With the continuous development of the aluminum product processing industry, anodic oxidation or chemical oxidation methods are more and more widely adopted in the industry to generate an oxide film on the surface of aluminum and aluminum alloy products so as to achieve the purposes of protection and decoration.
The surface treatment of the aluminum alloy section is perfect extrusion of the aluminum alloy section and gorgeous turning in modern society, the common method for the surface treatment of the aluminum alloy section is an anodic oxidation method, a compact oxidation film can be formed on the surface of the aluminum alloy section through the anodic oxidation method, and the corrosion resistance, the wear resistance and the decorative performance of the aluminum alloy section can be obviously improved due to the existence of the oxidation film.
The aluminum profile is generally in a long strip shape, the side face of the aluminum profile is provided with a through groove or a through hole according to the requirement, the aluminum profile is horizontally placed when the aluminum profile is mounted by the conventional mounting device, a large amount of electrolyte is accumulated on the surface of the aluminum profile after the aluminum profile is taken out of an electrolytic cell, the electrolyte continuously drips along with the movement of the aluminum profile to pollute the working environment, and the problems of complicated operation, high difficulty and poor use effect of a formed oxide film exist in the conventional anodic oxidation process.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
The present invention provides a composite anodic oxidation surface process and a treatment device for aluminum profiles, which are directed to the problems in the related art, so as to overcome the above technical problems in the related art.
Therefore, the invention adopts the following specific technical scheme:
a composite anodic oxidation surface treatment device for aluminum profiles comprises a box body and a box cover positioned at the top end of the box body, wherein a lifting ring is arranged in the middle of the top end of the box cover, a positive conductive plate and a negative conductive plate are symmetrically arranged on two sides in the box body, one side, far away from the negative conductive plate, of the positive conductive plate is connected with a positive end positioned in the box body, one side, far away from the positive conductive plate, of the negative conductive plate is connected with a negative end positioned in the box body, a vertically arranged stand column I and a stand column II are symmetrically arranged on two sides of the box body, a cross beam is arranged at the top ends of the stand column I and the stand column II, a crane is arranged at the top end of the cross beam, a lifting rope connected with the lifting ring is arranged at the bottom end of the crane, a support frame I and a support II are symmetrically arranged at the bottom end of the side, close to each other, of the support I and the support II are both provided with a frame, two sets of one side that the frame is close to each other is equipped with the opening, just top in the frame is equipped with the gasket of horizontal setting, the top of gasket is equipped with and runs through the threaded rod of frame.
Preferably, the box body is internally provided with an electrolytic cell, and the length of the first bracket is greater than that of the second bracket.
Preferably, the gasket is of a cylindrical structure, and a thread groove matched with the threaded rod is formed in the frame.
Preferably, a liquid discharge pipe is arranged at the bottom end of one side of the box body, and an electromagnetic valve matched with the liquid discharge pipe is arranged on the liquid discharge pipe.
According to another aspect of the present invention, there is provided a surface process for composite anodization of an aluminum profile, the surface process for composite anodization treatment of the aluminum profile including the steps of:
carrying out surface inspection on the aluminum alloy section, and recording the smoothness, defects, burrs and color difference levels of the surfaces of the sections in the same batch;
after the recording is finished, two ends of the aluminum alloy section are respectively arranged in the two groups of frames;
then rotating the threaded rod to enable the gasket to move downwards to abut against and fix the top of the aluminum alloy section;
starting a crane to rotate and loosen the lifting rope to enable the box cover to move downwards so as to send the aluminum alloy section into an electrolytic cell in the box body;
then adding alkali liquor into the electrolytic cell to remove oil;
electrifying the electrolytic solution in the electrolytic cell through the positive terminal and the negative terminal, extending the positive conductive plate and the negative conductive plate in the electrolytic cell, and washing the aluminum alloy section for the first time;
adding acid liquor for neutralization after the first water washing is finished, carrying out second water washing, carrying out a neutralization process on the surface of the aluminum alloy section at normal temperature, and discharging washing wastewater after the washing is finished;
injecting electrolyte into an electrolytic cell, and carrying out an oxidation process on the surface of the aluminum alloy profile;
injecting the hole sealing liquid into an electrolytic cell after 5-8 minutes of the oxidation process, and carrying out the hole sealing process on the surface of the aluminum alloy section;
the treatment time of the hole sealing process is determined according to the thickness of the oxide film;
after the hole sealing process is finished, starting a crane to lift the box cover through a lifting rope to lift the box body to separate from the box body, and lifting the aluminum profile to separate from the electrolytic cell;
and then washing the aluminum alloy section bar by using clear water until the pH value of the surface of the aluminum alloy section bar is 5-7.5, discharging hole sealing liquid and washing wastewater, and finally drying to obtain the composite anodic oxidation aluminum section bar.
Preferably, the treatment time of alkali liquor for removing oil is 5-10 minutes, and the treated section is washed by clean water until the pH value of the section surface is 4-7.
Preferably, the aluminum alloy section is pickled for 3 to 6 minutes by using sulfuric acid pickling solution at the temperature of between 15 and 28 ℃,
preferably, the electrolytic oxidation process is carried out in three stages, the voltage at the early stage is 24V, and the current density is 3.0A/d m2The medium voltage is 25V, and the current density is 3.2A/d m2The later voltage is 22V, and the current density is 2.6A/d m2Wherein the middle stage of electrolytic oxidationThe duration of the process is 40-50 minutes.
Preferably, the drying temperature is 60-75 ℃, and the drying time is 50-55 minutes, wherein the aluminum profile is in an inclined state due to the different heights of the first bracket and the second bracket, and the liquid on the surface of the aluminum profile slides down and drips back into the electrolytic cell.
The invention has the beneficial effects that: through the matching of the first support and the second support, the aluminum profile is obliquely arranged, when the box cover drives the aluminum profile to rise to separate from the liquid surface in the electrolytic cell, the electrolyte on the aluminum profile above the liquid surface slides down along the inclined aluminum profile surface and drips back into the electrolytic cell, the electrolyte is recovered, a large amount of electrolyte is prevented from being accumulated on the aluminum profile surface, the electrolyte is prevented from dripping to each position of a production workshop along with the movement of the aluminum profile, the working environment is ensured to be clean, and the burden of subsequent aluminum profile surface cleaning work is reduced; through the steps of alkali liquor degreasing, acid liquor neutralization and electrolytic oxidation, an oxide film layer with the thickness of 10-12 mu m is formed on the surface of the aluminum profile, the purpose of effective anodic oxidation is achieved, the oxide film forming effect is good, the oxide film using effect is good, the striking resistance and the corrosion resistance are strong, the stability of the aluminum alloy profile during oxidation is improved, and the rejection rate in the later period is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a composite anodizing apparatus for an aluminum profile according to an embodiment of the present invention;
FIG. 2 is one of the steps of a composite anodizing surface process for aluminum profiles according to an embodiment of the present invention;
fig. 3 is a second flowchart illustrating steps of a composite anodizing surface process for aluminum profiles according to an embodiment of the present invention.
In the figure:
1. a box body; 2. a box cover; 3. a hoisting ring; 4. a positive conductive plate; 5. a negative conductive plate; 6. a positive terminal; 7. a negative terminal; 8. a first upright post; 9. a second upright post; 10. a cross beam; 11. hoisting a machine; 12. a lifting rope; 13. a first bracket; 14. a second bracket; 15. a frame; 16. a gasket; 17. a threaded rod; 18. and a liquid discharge pipe.
Detailed Description
For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.
According to the embodiment of the invention, a composite anodic oxidation surface process and a treatment device for an aluminum profile are provided.
As shown in fig. 1-3, the composite anodic oxidation surface process and treatment device for aluminum profiles according to the embodiment of the present invention includes a box body 1 and a box cover 2 located at the top end of the box body 1, a hanging ring 3 is located in the middle of the top end of the box cover 2, a positive conductive plate 4 and a negative conductive plate 5 are symmetrically arranged on two sides in the box body 1, one side of the positive conductive plate 4 away from the negative conductive plate 5 is connected to a positive terminal 6 located in the box body 1, one side of the negative conductive plate 5 away from the positive conductive plate 4 is connected to a negative terminal 7 located in the box body 1, a vertical column one 8 and a vertical column two 9 are symmetrically arranged on two sides of the box body, a beam 10 is arranged at the top end of the column one 8 and the column two 9, a crane 11 is arranged at the top end of the beam 10, a hanging rope 12 connected to the hanging ring 3 is arranged at the bottom end of the crane 11, the bottom symmetry of case lid 2 is equipped with support one 13 and support two 14, support one 13 with the one side bottom that support two 14 are close to each other all is equipped with frame 15, and is two sets of one side that frame 15 is close to each other is equipped with the opening, just top in the frame 15 is equipped with the gasket 16 of horizontal setting, the top of gasket 16 is equipped with and runs through frame 15's threaded rod 17.
As shown in fig. 1-3, the electrolytic cell is arranged in the box body 1, the length of the first support 13 is greater than that of the second support 14, the gasket 16 is of a cylindrical structure, the frame 15 is provided with a thread groove matched with the threaded rod 17, the bottom end of one side of the box body 1 is provided with a liquid discharge pipe 18, and the liquid discharge pipe 18 is provided with an electromagnetic valve matched with the liquid discharge pipe 18. As can be seen from the above design, the liquid discharge pipe 18 and the electromagnetic valve are designed in a matching manner, so that the replacement and discharge of the liquid in the electrolytic cell in the box body 1 are facilitated for the workers.
According to another aspect of the present invention, there is provided a surface process for composite anodization of an aluminum profile, the surface process for composite anodization treatment of the aluminum profile including the steps of:
carrying out surface inspection on the aluminum alloy section, and recording the smoothness, defects, burrs and color difference levels of the surfaces of the sections in the same batch;
after the recording is finished, two ends of the aluminum alloy section are respectively arranged in the two groups of frames 15;
then, rotating the threaded rod 17 to enable the gasket 16 to move downwards to abut and fix the top of the aluminum alloy section;
starting a crane 11 to rotate and loosen a lifting rope 12 so as to enable the box cover 2 to move downwards and send the aluminum alloy section into an electrolytic cell in the box body 1;
then adding alkali liquor into the electrolytic cell to remove oil;
electrifying the electrolytic solution in the electrolytic cell through the positive terminal 6 and the negative terminal 7, extending the positive conductive plate 4 and the negative conductive plate 5 in the electrolytic cell, and washing the aluminum alloy section for the first time;
adding acid liquor for neutralization after the first water washing is finished, carrying out second water washing, carrying out a neutralization process on the surface of the aluminum alloy section at normal temperature, and discharging washing wastewater after the washing is finished;
injecting electrolyte into an electrolytic cell, and carrying out an oxidation process on the surface of the aluminum alloy profile;
injecting the hole sealing liquid into an electrolytic cell after 5-8 minutes of the oxidation process, and carrying out the hole sealing process on the surface of the aluminum alloy section;
the treatment time of the hole sealing process is determined according to the thickness of the oxide film;
after the hole sealing process is finished, a crane 11 is started to lift the box cover 2 through a lifting rope 12 to lift and separate from the box body 1, and the aluminum profile lifts and separates from the electrolytic cell;
and then washing the aluminum alloy section bar by using clear water until the pH value of the surface of the aluminum alloy section bar is 5-7.5, discharging hole sealing liquid and washing wastewater, and finally drying to obtain the composite anodic oxidation aluminum section bar.
As shown in figure 1-the treatment time for removing oil with alkali liquor is 5-10 minutes, after the treatment is finished, the aluminum alloy section is washed with clean water until the pH value of the surface of the section is 4-7, the aluminum alloy section is pickled with sulfuric acid pickling solution for 3-6 minutes at the temperature of 15-28 ℃,
as shown in FIGS. 1-3, the electrolytic oxidation process is divided into three stages, the voltage at the early stage is 24V, and the current density is 3.0A/d m2The medium voltage is 25V, and the current density is 3.2A/d m2The later voltage is 22V, and the current density is 2.6A/d m2And the duration time of the middle process of the electrolytic oxidation is 40-50 minutes, the drying temperature is 60-75 ℃, and the drying time is 50-55 minutes, wherein the aluminum profile is in an inclined state due to the difference in height between the first support 13 and the second support 14, and the liquid on the surface of the aluminum profile slides down and drips back into the electrolytic cell.
As shown in fig. 1 to 3, according to the embodiment of the present invention, there is also provided a surface process for composite anodization of an aluminum profile, the surface process for composite anodization of an aluminum profile includes the following steps:
step S101, carrying out surface inspection on the aluminum alloy section, and recording the smoothness, defects, burrs and color difference level of the surface of each section in the same batch;
step S103, after the recording is finished, two ends of the aluminum alloy section are respectively arranged in the two groups of frames 15;
step S105, rotating the threaded rod 17 to enable the gasket 16 to move downwards to abut and fix the top of the aluminum alloy section;
step S107, starting a crane 11 to rotate and loosen a lifting rope 12 so as to enable a box cover 2 to move downwards and send the aluminum alloy section into an electrolytic cell in a box body 1;
step S109, adding alkali liquor into the electrolytic cell to remove oil;
step S111, electrifying the electrolytic solution in the electrolytic cell through the positive electrode terminal 6 and the negative electrode terminal 7, extending the positive electrode conductive plate 4 and the negative electrode conductive plate 5 in the electrolytic cell, and washing the aluminum alloy section for the first time;
step S113, adding acid liquor for neutralization after the first water washing is finished, carrying out second water washing, carrying out a neutralization process on the surface of the aluminum alloy section at normal temperature, and discharging washing wastewater after the washing is finished;
step S115, injecting electrolyte into an electrolytic cell, and carrying out an oxidation process on the surface of the aluminum alloy section;
step S117, injecting hole sealing liquid into the electrolytic cell after 5-8 minutes of the oxidation process, and carrying out hole sealing process on the surface of the aluminum alloy section;
step S119, determining the processing time of the hole sealing process according to the thickness of the oxide film;
step S121, after the hole sealing process is finished, starting a crane 11 to lift the box cover 2 through a lifting rope 12 to lift the box cover to separate from the box body 1, and lifting the aluminum profile to separate from the electrolytic cell;
and S123, washing with clear water until the pH value of the surface of the aluminum alloy section is 5-7.5, discharging the hole sealing liquid and washing wastewater, and finally drying to obtain the composite anodic aluminum oxide section.
In summary, according to the technical scheme of the invention, the first support 13 is matched with the second support 14, so that the aluminum profile is obliquely arranged, when the box cover 2 drives the aluminum profile to rise to separate from the liquid surface in the electrolytic cell, the electrolyte on the aluminum profile above the liquid surface slides down along the inclined aluminum profile surface and drips back into the electrolytic cell, the electrolyte is recovered, a large amount of electrolyte is prevented from being accumulated on the aluminum profile surface, the electrolyte is prevented from moving along with the aluminum profile and dripping to each position of a production workshop, the working environment is ensured to be clean, and the burden of subsequent aluminum profile surface cleaning work is reduced; through the steps of alkali liquor degreasing, acid liquor neutralization and electrolytic oxidation, an oxide film layer with the thickness of 10-12 mu m is formed on the surface of the aluminum profile, the purpose of effective anodic oxidation is achieved, the oxide film forming effect is good, the oxide film using effect is good, the striking resistance and the corrosion resistance are strong, the stability of the aluminum alloy profile during oxidation is improved, and the rejection rate in the later period is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The composite anodic oxidation treatment device for the aluminum profile is characterized by comprising a box body (1) and a box cover (2) located at the top end of the box body (1), wherein a lifting ring (3) is arranged in the middle of the top end of the box cover (2), a positive conductive plate (4) and a negative conductive plate (5) are symmetrically arranged on two sides in the box body (1), one side, far away from the negative conductive plate (5), of the positive conductive plate (4) is connected with a positive end (6) located in the box body (1), one side, far away from the positive conductive plate (4), of the negative conductive plate (5) is connected with a negative end (7) located in the box body (1), a vertically arranged stand column I (8) and a stand column II (9) are symmetrically arranged on two sides of the box body, a cross beam (10) is arranged at the top ends of the stand column I (8) and the stand column II (9), and a crane (11) is arranged at the top end of the cross beam (10), a lifting rope (12) connected with the lifting ring (3) is arranged at the bottom end of the crane (11), a first support (13) and a second support (14) are symmetrically arranged at the bottom end of the box cover (2), frames (15) are arranged at the bottom ends of the sides, close to each other, of the first support (13) and the second support (14), openings are formed in the sides, close to each other, of the two groups of frames (15), a transversely arranged gasket (16) is arranged at the top end in each frame (15), and a threaded rod (17) penetrating through the frames (15) is arranged at the top end of each gasket (16); an electrolytic cell is arranged in the box body (1), and the length of the first support (13) is greater than that of the second support (14); a liquid discharge pipe (18) is arranged at the bottom end of one side of the box body (1), and an electromagnetic valve matched with the liquid discharge pipe (18) is arranged on the liquid discharge pipe (18).
2. The composite anodizing device for the aluminum profile according to claim 1, wherein the gasket (16) is of a cylindrical structure, and the frame (15) is provided with a thread groove matched with the thread rod (17).
3. A surface process for composite anodic oxidation of aluminum profiles is characterized in that the aluminum profile composite anodic oxidation treatment device of any one of claims 1-2 is adopted, and the surface process comprises the following steps:
carrying out surface inspection on the aluminum alloy section, and recording the smoothness, defects, burrs and color difference levels of the surfaces of the sections in the same batch;
after the recording is finished, two ends of the aluminum alloy section are respectively arranged in the two groups of frames (15);
then, rotating the threaded rod (17) to enable the gasket (16) to move downwards to abut against and fix the top of the aluminum alloy section;
starting a crane (11) to rotate and loosen a lifting rope (12) to enable a box cover (2) to move downwards, and sending the aluminum alloy section into an electrolytic cell in a box body (1);
then adding alkali liquor into the electrolytic cell to remove oil;
electrifying the electrolytic solution in the electrolytic cell through the positive electrode end (6) and the negative electrode end (7), extending the positive electrode conductive plate (4) and the negative electrode conductive plate (5) in the electrolytic cell, and washing the aluminum alloy section for the first time;
adding acid liquor for neutralization after the first water washing is finished, carrying out second water washing, carrying out a neutralization process on the surface of the aluminum alloy section at normal temperature, and discharging washing wastewater after the washing is finished;
injecting electrolyte into an electrolytic cell, and carrying out an oxidation process on the surface of the aluminum alloy profile;
injecting the hole sealing liquid into an electrolytic cell after 5-8 minutes of the oxidation process, and carrying out the hole sealing process on the surface of the aluminum alloy section;
the treatment time of the hole sealing process is determined according to the thickness of the oxide film;
after the hole sealing process is finished, a crane (11) is started to lift the box cover (2) through a lifting rope (12) to lift the box cover to separate from the box body (1), and the aluminum profile lifts to separate from the electrolytic cell;
and then washing the aluminum alloy section bar by using clear water until the pH value of the surface of the aluminum alloy section bar is 5-7.5, discharging hole sealing liquid and washing wastewater, and finally drying to obtain the composite anodic oxidation aluminum section bar.
4. The composite anodic oxidation surface process for aluminum profiles as claimed in claim 3, wherein the treatment time for alkali degreasing is 5-10 minutes, and the surface of the profile is washed with clean water until the pH value is 4-7.
5. The composite anodic oxidation surface process for aluminum profiles as claimed in claim 3, wherein the aluminum alloy profiles are pickled with sulfuric acid pickling solution at 15-28 ℃ for 3-6 minutes.
6. The composite anodic oxidation surface process for aluminum profiles as set forth in claim 5, wherein the electrolytic oxidation process is carried out in three stages with a front stage voltage of 24V and a current density of 3.0A/dm2The medium-term voltage is 25V, and the current density is 3.2A/dm2The later voltage is 22V, and the current density is 2.6A/dm2Wherein the duration of the middle process of the electrolytic oxidation is 40-50 minutes.
7. The composite anodic oxidation surface process for aluminum profiles according to claim 5, characterized in that the drying temperature is 60-75 ℃, and the drying time is 50-55 minutes, wherein the aluminum profiles are in an inclined state due to the difference in height between the first bracket (13) and the second bracket (14), and the liquid on the surfaces of the aluminum profiles slides down and drips back into the electrolytic cell.
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Denomination of invention: A composite anodizing surface process and treatment device for aluminum profiles Granted publication date: 20211112 Pledgee: Xinxing County Sub branch of Postal Savings Bank of China Co.,Ltd. Pledgor: XINXING GUOLIN ALUMINUM INDUSTRY CO.,LTD. Registration number: Y2024980023485 |