CN112899750A - Metal coloring treatment process - Google Patents
Metal coloring treatment process Download PDFInfo
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- CN112899750A CN112899750A CN202110049387.XA CN202110049387A CN112899750A CN 112899750 A CN112899750 A CN 112899750A CN 202110049387 A CN202110049387 A CN 202110049387A CN 112899750 A CN112899750 A CN 112899750A
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- metal
- aluminum alloy
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- coloring
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 50
- 239000002184 metal Substances 0.000 title claims abstract description 50
- 238000004040 coloring Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 20
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 26
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 15
- 230000003647 oxidation Effects 0.000 claims abstract description 13
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 230000000536 complexating effect Effects 0.000 claims abstract description 6
- 238000005498 polishing Methods 0.000 claims abstract description 6
- 239000002904 solvent Substances 0.000 claims abstract description 5
- 238000007605 air drying Methods 0.000 claims abstract description 4
- 238000007639 printing Methods 0.000 claims abstract description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 10
- 229910017604 nitric acid Inorganic materials 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000000049 pigment Substances 0.000 abstract description 2
- 239000003086 colorant Substances 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 2
- 238000007743 anodising Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 235000010344 sodium nitrate Nutrition 0.000 description 2
- 239000004317 sodium nitrate Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
- C23F3/02—Light metals
- C23F3/03—Light metals with acidic solutions
-
- 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
- C25D11/243—Chemical after-treatment using organic dyestuffs
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Treatment Of Metals (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
The technical purpose of the invention is to provide a coloring treatment process of a colored anode metal, which can color the surface of the metal in multiple colors and integrate the pigment and the metal through physical coloring and chemical complexing. The metal coloring treatment process comprises the following steps: deoiling the surface of the aluminum alloy metal; alkalifying the surface of the aluminum alloy metal and neutralizing the alkalified substance; chemically polishing the surface of the aluminum alloy metal and neutralizing the chemically polished compound; carrying out anodic oxidation treatment on the metal surface, neutralizing the anodic oxidation chemicals, and forming fine holes on the aluminum alloy metal surface; printing a color process pattern on the metal surface by adopting the complexing ion nano weak solvent ink through a printer, wherein the color ink enters the tiny holes; and air-drying the surface of the aluminum alloy with the printed colorful patterns. The color anode of the invention performs special hole expanding technology on the anode film layer and special raw film anode parameters to consolidate the adhesion, compactness and wear resistance of the toner.
Description
Technical Field
The invention relates to a metal processing technology, in particular to a coloring technology applied to metal processing.
Background
In the prior art, the conventional anodic oxidation coloring has the limitation of single color, the conventional anodic oxidation can only be used for coloring single color, such as red, orange, yellow, green, cyan, blue, , black, gray and the like, only one color on one oxygen-positive workpiece can be reflected in vision, the multi-color requirements of products cannot be met, the coloring is not firm, and the process problems of easy decolorization and color change occur after the workpiece is used for a period of time; in view of the above, the technical defects of single color and easy aging and discoloration of the anodic oxidation coloring in the art become technical problems to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to overcome the technical problems of difficult fixation and single coloring of anodic oxidation coloring in metal surface treatment in the prior art, and provides a colorizing treatment process for colorizing a metal surface by a colorful anodic metal, wherein the colorful anodic metal is formed by physically coloring and chemically complexing a pigment and the metal.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
the metal coloring treatment process is characterized by comprising the following steps:
a. deoiling the surface of the aluminum alloy metal;
b. alkalifying the surface of the aluminum alloy metal and neutralizing the alkalified substance;
c. chemically polishing the surface of the aluminum alloy metal and neutralizing the chemically polished compound;
d. carrying out anodic oxidation treatment on the metal surface, neutralizing the anodic oxidation chemicals, and forming fine holes on the aluminum alloy metal surface;
e. printing a color process pattern on the metal surface by adopting the complexing ion nano weak solvent ink through a printer, wherein the color ink enters the tiny holes;
f. and air-drying the surface of the aluminum alloy with the printed colorful patterns.
Furthermore, in the step a, a titanium hanger with better alkali resistance, acid resistance and electric conductivity is adopted to place the aluminum alloy workpiece.
Further, in the step a, a 15% -30% nitric acid-containing aqueous solution is adopted for cleaning, the nitric acid aqueous solution is heated to 60-70 ℃, the workpiece is soaked for 3-5 minutes, and oil stains and wax stains on the surface of the workpiece are removed.
Further, the fine pores have a diameter of 0.01 to 0.03. mu.m.
Further, the color ink contains dye particles with a diameter of 0.0015 to 0.003 μm.
The metal surface is anodized for more than 45 minutes.
200g/L of sodium hydroxide and 50g/L of sodium nitrate
The beneficial technical effects of the invention are as follows: the dye is a dye for complexing metal ions, physically adsorbed by the aluminium hydroxide of the porous layer, and chemically complexed into a chromogenic metal salt; become part of the aluminum alloy. The color anode is subjected to special reaming technology on an anode film layer and special raw film anode parameters to consolidate the adhesiveness, compactness and wear resistance of toner, post-treatment coloring is carried out by using a special printer to add weak solvent ink, and hole sealing treatment is carried out after coloring. And baking the hole after hole sealing by using a baking line.
Drawings
FIG. 1 is a process flow diagram of one embodiment of the present invention.
Detailed Description
The following detailed description will explain specific embodiments of the present invention by referring to specific examples, but not limiting the claims.
According to the invention, a titanium hanger is used for fixing a workpiece, the titanium hanger has good alkali resistance, acid resistance and conductivity, a nitric acid solution prepared by mixing 100L of water with 20L of nitric acid is used, the temperature is increased to 60-70 ℃, the workpiece is soaked for 3-5 minutes, oil stains and wax stains on the surface of the workpiece are removed, and the surface of an aluminum alloy metal is deoiled.
Alkalifying the surface of the aluminum alloy metal and neutralizing the alkalified substance; the alkali washing solution is prepared as follows: dissolving 200g of sodium hydroxide and 50g of sodium nitrate in 1 liter of water; heating to 80-90 ℃, removing a natural oxide layer on the surface of the product, and adjusting the brightness of the surface of the product; or 380g of sodium hydroxide is dissolved in 1 liter of water, the temperature is raised to 80-90 ℃, a natural oxide layer on the surface of the product is removed, and the brightness of the surface of the product is adjusted; the solution for neutralizing the aluminum alloy surface chemicals after alkali washing is prepared as follows: 1. 30 percent of nitric acid, 2 percent of chromic anhydride and 3 percent of clean water; neutralizing alkali washing at normal temperature, and removing compounds on the surface after alkali washing.
Chemically polishing the surface of the aluminum alloy metal and neutralizing the chemically polished compound; the chemical polishing solution is prepared by the following steps: 1. the method comprises the following steps of (1) soaking a product at 90-110 ℃ with 16 wt% of sulfuric acid (content 98%), 80 wt% of phosphoric acid (content 85%) and 4 wt% of nitric acid (content 98%), and adjusting the brightness of the surface of the product; the solution of the compound that neutralizes the chemical polishing is formulated as: 1. 30 percent of nitric acid, 2 percent of chromic anhydride and 3 percent of clean water; neutralizing the polished compound at normal temperature.
Anodizing the metal surface, neutralizing the anodized chemical, anodizing the aluminum alloy metal surface for more than 45 minutes, and forming fine holes on the aluminum alloy metal surface; preparing a solution for anodic oxidation: each liter of water contains 150-200 g of sulfuric acid and 10-15 g of alumina solution; the temperature of the solution is controlled at 18-20 ℃, and anodic oxidation treatment is carried out by adopting a refrigerator, a rectifier, a lead plate, a copper plate and PP groove fixing equipment. About 77 hundred million nanometer-scale holes are formed on the anode of each square centimeter of the aluminium surface, and the diameter of each small hole is 0.01-0.03 mu m. Printed and dyed to form the only dyeable metal. The method is characterized in that 30% by weight of nitric acid, 5% by weight of chromic anhydride and 65% of clear water are used for preparing a neutralization oxidation acid solution, and micropore expansion is carried out at normal temperature.
The above procedures adopt ultrasonic equipment for ultrasonic treatment, and can obtain better cleaning and dye attaching effects.
The printer is used to print color pattern on the metal surface with color ink containing dye particle of 0.0015-0.003 micron diameter. The color ink enters the tiny holes; and air-drying the surface of the aluminum alloy with the printed colorful patterns. The ambient temperature was controlled below 26 ℃ and the water was cut with an air knife for 30 minutes.
In the invention, the dye is a dye which complexes metal ions, physically adsorbs aluminium hydroxide through the porous layer, and then chemically complexes into a chromogenic metal salt which becomes a part of the aluminium alloy; and the color anode is subjected to special reaming technology on the anode film layer and special raw film anode parameters to consolidate the adhesiveness, compactness and wear resistance of toner, post-treatment coloring is carried out by using a special printer to add weak solvent ink, and hole sealing treatment is carried out after coloring. And baking the hole after hole sealing by using a baking line.
Claims (6)
1. The metal coloring treatment process is characterized by comprising the following steps:
deoiling the surface of the aluminum alloy metal;
alkalifying the surface of the aluminum alloy metal and neutralizing the alkalified substance;
chemically polishing the surface of the aluminum alloy metal and neutralizing the chemically polished compound;
carrying out anodic oxidation treatment on the metal surface, neutralizing the anodic oxidation chemicals, and forming fine holes on the aluminum alloy metal surface;
printing a color process pattern on the metal surface by adopting the complexing ion nano weak solvent ink through a printer, wherein the color ink enters the tiny holes;
and air-drying the surface of the aluminum alloy with the printed colorful patterns.
2. A metal coloring process according to claim 1, wherein: and in the step a, a titanium material hanging rack with better alkali resistance, acid resistance and electric conductivity is adopted to place the aluminum alloy workpiece.
3. A metal coloring process according to claim 1, wherein: in the step a, a 15% -30% nitric acid-containing aqueous solution is adopted for cleaning, the nitric acid aqueous solution is heated to 60-70 ℃, the workpiece is soaked for 3-5 minutes, and oil stains and wax stains on the surface of the workpiece are removed.
4. A metal coloring process according to claim 1, wherein: the diameter of the fine holes is 0.01-0.03 mu m.
5. A metal coloring process according to claim 1, wherein: the color ink contains dye particles with the diameter of 0.0015-0.003 mu m.
6. A metal coloring process according to claim 1, wherein: the metal surface is anodized for more than 45 minutes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110049387.XA CN112899750A (en) | 2021-01-14 | 2021-01-14 | Metal coloring treatment process |
| PCT/CN2021/100668 WO2022151652A1 (en) | 2021-01-14 | 2021-06-17 | Metal coloring treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110049387.XA CN112899750A (en) | 2021-01-14 | 2021-01-14 | Metal coloring treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112899750A true CN112899750A (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110049387.XA Pending CN112899750A (en) | 2021-01-14 | 2021-01-14 | Metal coloring treatment process |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112899750A (en) |
| WO (1) | WO2022151652A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113481563A (en) * | 2021-08-02 | 2021-10-08 | 林敏� | Coloring treatment process for aluminum alloy |
| WO2022151652A1 (en) * | 2021-01-14 | 2022-07-21 | 邓宇 | Metal coloring treatment process |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115386882B (en) * | 2022-08-30 | 2023-06-06 | 立铠精密科技(盐城)有限公司 | Method for improving uniformity between chemical polishing layers, application of method, system for realizing method and control method |
| CN116117602A (en) * | 2022-12-30 | 2023-05-16 | 广东兰湾智能科技有限公司 | A coloring process for 3D printed products |
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| CN101619477A (en) * | 2008-06-30 | 2010-01-06 | 比亚迪股份有限公司 | Preparation method for multicolor oxide film |
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| CN103031582A (en) * | 2011-09-29 | 2013-04-10 | 电化皮膜工业株式会社 | Colored aluminum product or colored aluminum alloy product manufacturing method, pigment composition for coloring, and colored aluminum product or colored aluminum alloy product |
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2021
- 2021-01-14 CN CN202110049387.XA patent/CN112899750A/en active Pending
- 2021-06-17 WO PCT/CN2021/100668 patent/WO2022151652A1/en active Application Filing
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022151652A1 (en) * | 2021-01-14 | 2022-07-21 | 邓宇 | Metal coloring treatment process |
| CN113481563A (en) * | 2021-08-02 | 2021-10-08 | 林敏� | Coloring treatment process for aluminum alloy |
| CN113481563B (en) * | 2021-08-02 | 2024-02-27 | 林敏� | Aluminum alloy coloring treatment process |
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| Publication number | Publication date |
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| WO2022151652A1 (en) | 2022-07-21 |
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Application publication date: 20210604 |