CN112877743A - Manufacturing method of bicolor anodic oxidation - Google Patents
Manufacturing method of bicolor anodic oxidation Download PDFInfo
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- CN112877743A CN112877743A CN202110036180.9A CN202110036180A CN112877743A CN 112877743 A CN112877743 A CN 112877743A CN 202110036180 A CN202110036180 A CN 202110036180A CN 112877743 A CN112877743 A CN 112877743A
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- anodic oxidation
- ink
- sand blasting
- 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
- C25D11/14—Producing integrally coloured layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
-
- 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
- C25D11/12—Anodising more than once, e.g. in different baths
-
- 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
Abstract
The invention discloses a manufacturing method of double-color anodic oxidation, which relates to the technical field of metal processing, in particular to a manufacturing method of double-color anodic oxidation, and comprises the following steps; s1, integral sand blasting; firstly, performing integral sand blasting on the surface of an aluminum alloy part, and S2, performing anodic oxidation for the first time; and placing the integrally sand-blasted aluminum alloy part serving as an anode in an electrolyte solution, and performing primary anodic oxidation treatment by utilizing electrolysis. The manufacturing method of the bicolor anodic oxidation has the advantages that when the bicolor anodic oxidation is carried out, the processing method comprises the steps of integral sand blasting, first-time anodic oxidation, integral spraying shielding of printing ink, laser etching to remove the printing ink layer and the anode layer, sand blasting, second-time anodic oxidation and printing ink removing, the process is simple, the operation is more convenient, high professional knowledge is not needed, the production cost is low, the processing efficiency is high, the dimensional tolerance precision is high, and the pollution caused by multiple environments avoids the problems that the traditional manufacturing method of the bicolor anodic oxidation is complex in process, high in cost and extremely large in environmental pollution.
Description
Technical Field
The invention relates to the technical field of metal processing, in particular to a manufacturing method of bicolor anodic oxidation.
Background
The existing two-color anode process is generally realized by a shielding spraying or exposure developing method if the two positive surfaces are required to be glossy, and because the two positive surfaces are required to be glossy, chemical polishing is required, and the chemical polishing can damage the one positive surface, the one positive surface is required to be protected by ink, so that the precision tolerance of the boundary line of the two-color edges is difficult to meet, the process is complicated, the cost is high, and the process is not environment-friendly. Meanwhile, the existing two-color anodic oxidation process is generally only suitable for two-color anodic effect (or pattern) on a plane, and cannot be used as a two-color anode on the surface of a 3D (three-dimensional) workpiece, because 3D shielding spraying and exposure developing are difficult to realize. The traditional method is to carry out the double-color anode by using a spraying, exposing and developing or film-pasting shielding method, and the methods have complex flow and low dimensional precision or are difficult to realize, so the method for manufacturing the double-color anode oxidation is provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a manufacturing method of double-color anodic oxidation, which solves the problems in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme: a manufacturing method of bicolor anodic oxidation comprises the following steps;
s1, integral sand blasting; firstly, the surface of the aluminum alloy part is subjected to integral sand blasting.
S2, carrying out first anodic oxidation; and placing the integrally sand-blasted aluminum alloy part serving as an anode in an electrolyte solution, and performing primary anodic oxidation treatment by utilizing electrolysis.
S3, spraying and shielding the whole ink; and (3) using an oil spraying tool to enable the whole aluminum alloy part subjected to the first anodic oxidation treatment to be sprayed and shielded by the ink, and waiting for the ink to dry.
S4, removing the ink layer and the anode layer by laser etching; and (3) removing the ink layer and the anode layer simultaneously by using a laser etching device to expose the base material aluminum alloy.
S5, sand blasting; and (4) carrying out sand blasting on the surface of the base material aluminum alloy subjected to laser etching processing again.
S6, carrying out secondary anodic oxidation; and carrying out secondary anodic oxidation treatment on the processed aluminum alloy.
S7, ink removing; and (4) carrying out ink removing processing on the aluminum alloy part subjected to the secondary anodic oxidation treatment to achieve the effect of bicolor anodic oxidation.
Preferably, the second anodizing can be performed with chemical polishing treatment, the surface of the aluminum alloy part is provided with ink to protect a positive surface, and the chemical polishing treatment can be performed, wherein the color of the second positive treatment is different from the color of the first positive treatment.
Preferably, when the laser etching ink layer and the anode layer are removed, the energy of the laser is controlled, the laser just removes the two-layer structure, the substance has no obvious influence on the aluminum base material, the aluminum base material is exposed, the laser energy is controlled to form the effect similar to sand blasting on the aluminum base material, and sand blasting is not needed for some workpieces which do not need forced sand blasting.
Preferably, in the ink removing process, the ink removing process time is controlled to completely remove the ink, but the appearance of the anodic oxidation layer cannot be affected.
Preferably, the voltage of the first anodic oxidation is 10-13V, the current density is 1.3A/dm 2, the mass percentage of the sulfuric acid solution is 15-20%/L, the anodic oxidation time is 30-40 minutes, the temperature of the oxidation tank is controlled at 72-22 ℃, the voltage of the second anodic oxidation is 11V, the current density is 1.1A/dm2, the percentage of the sulfuric acid solution is 15-20%/L, and the anodic oxidation time is 15-20 minutes.
The invention provides a manufacturing method of double-color anodic oxidation, which has the following beneficial effects:
1. the manufacturing method of the bicolor anodic oxidation has the advantages that when the bicolor anodic oxidation is carried out, the processing method comprises the steps of integral sand blasting, first-time anodic oxidation, integral spraying shielding of printing ink, laser etching to remove the printing ink layer and the anode layer, sand blasting, second-time anodic oxidation and printing ink removing, the process is simple, the operation is more convenient, high professional knowledge is not needed, the production cost is low, the processing efficiency is high, the dimensional tolerance precision is high, and the pollution caused by multiple environments avoids the problems that the traditional manufacturing method of the bicolor anodic oxidation is complex in process, high in cost and extremely large in environmental pollution.
2. This double-colored anodic oxidation's preparation method handles printing ink layer and anode layer through using laser radium carving, utilize laser radium carving precision height, pollution-free, efficient advantage, can remove printing ink layer and anode layer simultaneously, expose the substrate aluminum alloy, and can not have obvious influence to aluminum substrate, and control laser energy, when printing ink layer and anode layer can be got rid of and aluminum substrate is exposed, form the effect of similar sandblast on aluminum substrate, do not need again to carry out the sandblast, and then can practice thrift the sandblast operation, reduce process time.
3. The invention uses printing ink to protect anode layer of one positive, so that two positive can be polished, and the positive surface and two positive surfaces have higher gloss and beautiful appearance.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1, the present invention provides a technical solution: a manufacturing method of bicolor anodic oxidation comprises the following steps;
s1, integral sand blasting; firstly, the surface of the aluminum alloy part is subjected to integral sand blasting.
S2, carrying out first anodic oxidation; and placing the integrally sand-blasted aluminum alloy part serving as an anode in an electrolyte solution, and performing primary anodic oxidation treatment by utilizing electrolysis.
S3, spraying and shielding the whole ink; and (3) using an oil spraying tool to enable the whole aluminum alloy part subjected to the first anodic oxidation treatment to be sprayed and shielded by the ink, and waiting for the ink to dry.
S4, removing the ink layer and the anode layer by laser etching; and (3) removing the ink layer and the anode layer simultaneously by using a laser etching device to expose the base material aluminum alloy.
S5, sand blasting; and (4) carrying out sand blasting on the surface of the base material aluminum alloy subjected to laser etching processing again.
S6, carrying out secondary anodic oxidation; and carrying out secondary anodic oxidation treatment on the processed aluminum alloy.
S7, ink removing; the aluminum alloy part after the second anodic oxidation treatment is subjected to printing ink removing processing, the effect of double-color anodic oxidation is achieved, the whole sand blasting is adopted, the first anodic oxidation is carried out, the whole spraying and shielding of the printing ink is carried out, the printing ink layer and the anode layer are removed through radium carving, the sand blasting is carried out, the second anodic oxidation is carried out, the processing method of the printing ink removing is carried out, the flow is simple, the operation is more convenient and faster, the high-degree professional knowledge is not needed, the production cost is low, the processing efficiency is high, the dimensional tolerance precision is high, the pollution caused by multiple environments avoids the problem that the traditional manufacturing method of the double-color anodic oxidation is complex.
The second anodizing can be carried out with chemical polishing, the surface of the aluminum alloy part is provided with ink for protecting a positive surface, the chemical polishing can be carried out, the color of the second anodizing is different from that of the first anodizing, the chemical polishing can be carried out only by protecting the positive surface with the ink layer during the second anodizing, the second positive surface has higher gloss, and the chemical polishing liquid medicine can damage the positive layer of the first positive and the ink can resist the chemical polishing liquid medicine.
Wherein, radium carving goes printing ink layer and anode layer man-hour, and the printing ink layer and anode layer are beaten to laser radium carving, and the energy of control laser makes laser just beat this two-layer structure, and the material does not have obvious influence to aluminum substrate, exposes aluminum substrate, and control laser energy can form the effect of similar sandblast on aluminum substrate, to some work pieces that need not force the sandblast to handle, need not carry out the sandblast again. Through using laser radium carving to handle printing ink layer and anode layer, utilize laser radium carving precision height, pollution-free, efficient advantage, can remove printing ink layer and anode layer simultaneously, expose the substrate aluminum alloy, and can not have obvious influence to aluminum substrate, and control laser energy, when can beat printing ink layer and anode layer and expose aluminum substrate, form the effect of similar sandblast on aluminum substrate, need not carry out the sandblast again, and then can practice thrift the sandblast operation, reduce process time.
The ink is completely removed by controlling the ink removing process time in the ink removing process, but the appearance of the anodic oxidation layer cannot be influenced.
Wherein the voltage of the first anodic oxidation is 10-13V, the current density is 1.3A/dm 2, the mass percent of the sulfuric acid solution is 15-20%/L, the anodic oxidation time is 30-40 minutes, the temperature of the oxidation tank is controlled at 72-22 ℃, the voltage of the second anodic oxidation is 11V, the current density is 1.1A/dm2, the percentage of the sulfuric acid solution is 15-20%/L, and the anodic oxidation time is 15-20 minutes.
In conclusion, the manufacturing method of the double-color anodic oxidation comprises the steps of carrying out overall sand blasting on the surface of an aluminum alloy part, placing the aluminum alloy part subjected to overall sand blasting as an anode in an electrolyte solution, carrying out a first anodic oxidation treatment by utilizing electrolysis, controlling the voltage of the first anodic oxidation to be 10-13V, the current density to be dm2 of 1.3A/L, the mass percent of a sulfuric acid solution to be 15-20%/L, the anodic oxidation time to be 30-40 minutes, controlling the temperature of an oxidation tank to be 72-22 ℃, using an oil spraying tool to enable the surface of the aluminum alloy part subjected to the first anodic oxidation treatment to be covered by ink spraying, waiting for the ink to be dried, using a laser engraving device to remove an ink layer and an anode layer simultaneously, exposing a base aluminum alloy, controlling the energy of laser, and enabling the laser to just knock off the two-layer structure, the material has no obvious influence on the aluminum base material, the aluminum base material is exposed, the laser energy is controlled to form the effect similar to sand blasting on the aluminum base material, sand blasting is not needed for workpieces which do not need forced sand blasting, the surface of the aluminum alloy base material after laser engraving processing is subjected to sand blasting again, the processed aluminum alloy is subjected to secondary anodic oxidation treatment, the voltage of the secondary anodic oxidation is 11V, the current density is 1.1A/dm2, the percentage of sulfuric acid solution is 15-20%/L, the anodic oxidation time is 15-20 minutes, and the aluminum alloy part subjected to the secondary anodic oxidation treatment is subjected to ink removing processing to achieve the effect of two-color anodic oxidation.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A manufacturing method of bicolor anodic oxidation comprises the following steps;
s1, integral sand blasting; firstly, the surface of the aluminum alloy part is subjected to integral sand blasting.
S2, carrying out first anodic oxidation; and placing the integrally sand-blasted aluminum alloy part serving as an anode in an electrolyte solution, and performing primary anodic oxidation treatment by utilizing electrolysis.
S3, spraying and shielding the whole ink; and (3) using an oil spraying tool to enable the whole aluminum alloy part subjected to the first anodic oxidation treatment to be sprayed and shielded by the ink, and waiting for the ink to dry.
S4, removing the ink layer and the anode layer by laser etching; and (3) removing the ink layer and the anode layer simultaneously by using a laser etching device to expose the base material aluminum alloy.
S5, sand blasting; and (4) carrying out sand blasting on the surface of the base material aluminum alloy subjected to laser etching processing again.
S6, carrying out secondary anodic oxidation; and carrying out secondary anodic oxidation treatment on the processed aluminum alloy.
S7, ink removing; and (4) carrying out ink removing processing on the aluminum alloy part subjected to the secondary anodic oxidation treatment to achieve the effect of bicolor anodic oxidation.
2. The method for manufacturing a two-color anodic oxidation as set forth in claim 1, wherein the second anodic oxidation is performed by chemical polishing, and the aluminum alloy part has a surface with ink to protect a positive surface, and the color of the two-positive process is different from the color of the one-positive process.
3. The method as claimed in claim 1, wherein during the etching of the ink layer and the anode layer, the laser is used to etch the ink layer and the anode layer, and the laser energy is controlled to make the laser just remove the two layers, so that the material has no significant effect on the aluminum substrate and expose the aluminum substrate, and the laser energy is controlled to form a sand blasting-like effect on the aluminum substrate, and the sand blasting is not needed for some workpieces that do not need forced sand blasting.
4. The method for manufacturing a two-color anodic oxide according to claim 1, wherein the ink stripping process time is controlled during the ink stripping process to completely strip the ink, but the appearance of the anodic oxide layer cannot be affected.
5. The method for preparing a bicolor anodic oxidation according to claim 1, wherein the voltage of the first anodic oxidation is 10-13V, the current density is 1.3A/dm 2, the mass percent of the sulfuric acid solution is 15% -20%/L, the anodic oxidation time is 30-40 minutes, the temperature of the oxidation tank is controlled at 72-22 ℃, the voltage of the second anodic oxidation is 11V, the current density is 1.1A/dm2, the mass percent of the sulfuric acid solution is 15% -20%/L, and the anodic oxidation time is 15-20 minutes.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113981504A (en) * | 2021-06-23 | 2022-01-28 | 中南机诚精密制品(深圳)有限公司 | Micro-arc oxidation patterning process method for ceramic alloy film layer and micro-arc oxidation cargo |
| IT202100016850A1 (en) * | 2021-06-28 | 2022-12-28 | Materya S R L | FINISHING TREATMENT OF ALUMINUM ELEMENTS |
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Application publication date: 20210601 |