CN108004580B - Corrosion device and method for preparing double-color film layer on metal surface - Google Patents
Corrosion device and method for preparing double-color film layer on metal surface Download PDFInfo
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 47
- 239000002184 metal Substances 0.000 title claims abstract description 47
- 230000007797 corrosion Effects 0.000 title claims abstract description 40
- 238000005260 corrosion Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 65
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims abstract description 14
- 238000003860 storage Methods 0.000 claims description 15
- 238000005530 etching Methods 0.000 claims description 12
- 230000003628 erosive effect Effects 0.000 claims description 10
- 230000003647 oxidation Effects 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 230000000630 rising effect Effects 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- 238000009713 electroplating Methods 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 238000007740 vapor deposition Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 abstract description 5
- 238000011282 treatment Methods 0.000 abstract description 5
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- 238000004519 manufacturing process Methods 0.000 abstract description 3
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- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 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
- C25D11/02—Anodisation
- C25D11/26—Anodisation of refractory metals 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
- C23F1/00—Etching metallic material by chemical means
- C23F1/08—Apparatus, e.g. for photomechanical printing surfaces
-
- 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
- C25D11/14—Producing integrally coloured layers
-
- 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
- C25D11/34—Anodisation of metals or alloys not provided for in groups C25D11/04 - C25D11/32
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention discloses a corrosion device for preparing a double-color film layer on a metal surface, which comprises a groove mechanism, a liquid transferring mechanism and a control mechanism, wherein a first groove body for accommodating a metal product is communicated with the bottom of a second groove body for pumping corrosive liquid, an overflow sensor is arranged at the edge of the first groove body, and the corrosion treatment is carried out on part of the surface of the metal product based on a communication principle and an overflow control mode. The invention also provides a method based on the corrosion device, wherein the metal product covered with the first color film layer is placed in the first groove body, the corrosion liquid enters the first groove body after being buffered by the second groove body, the liquid level of the first groove body is stably raised, the raising speed is controllable, so that a smooth and uniform corrosion interface is formed, and then the corrosion part is subjected to the second coloring treatment, so that the color boundary of the obtained product is clear, the appearance is attractive, and the method is particularly suitable for manufacturing the double-color film layer on the surface of a special-shaped product or a mesh structure product.
Description
Technical Field
The invention relates to a metal surface treatment technology, in particular to a corrosion device and a corrosion method for preparing a bicolor film layer on a metal surface.
Background
The single metallic color or single color surface of the metal product can not meet the requirement of people on the diversification of the product appearance, so that the metal product surface is protected, and meanwhile, the colorful appearance is formed for the purposes of identification, attractive appearance and the like, and the manufacturing process of the metal product surface is increasingly important.
Currently, the method for preparing a bicolor or multicolour film layer on the surface of metal is mainly obtained by partial area machining or post-mask corrosion. Patent application CN102747401a discloses a "processing method of aluminum parts", which mainly obtains different color film layers on the same aluminum part through multiple anodic oxidation dyeing treatments and appearance processing treatments; however, the appearance processing difficulty of the internal and external structures of the special-shaped product or the mesh structure product is high, and a double-color film layer with uniform internal and external surfaces cannot be formed. Patent application CN101096772B discloses a method for preparing a colorful pattern by anodic oxidation of titanium alloy, which is mainly characterized in that after one color is electrolyzed on titanium alloy, after part of the pattern is removed by etching, another color is electrolyzed by adopting another low voltage, and the steps are repeated for a plurality of times, so that the colorful pattern is obtained, but in the actual coloring process, the etching process is difficult to control due to high control requirement of the etching process, and certain transitional color or black mottled color exists when the pattern is removed by etching, so that the interface between two-color film layers is unclear, and the appearance of the interface is poor to a certain extent.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a corrosion device and a corrosion method for preparing a double-color film layer on a metal surface.
The technical scheme of the invention is as follows:
the corrosion device for preparing the double-color film layer on the metal surface comprises a groove mechanism, a pipetting mechanism and a control mechanism; the groove mechanism comprises an outer groove body and a communication groove, wherein the communication groove is arranged in the outer groove body, the communication groove comprises a first groove body and a second groove body, the bottoms of the first groove body and the second groove body are mutually communicated, and the first groove body is used for accommodating a part to be corroded of a metal product; the liquid transferring mechanism comprises a liquid storage tank for storing corrosive liquid and a quantitative pump, and the quantitative pump is connected with the liquid storage tank and the second tank body; the control mechanism comprises a controller, an overflow sensor and an erosion timer, wherein the overflow sensor is arranged at the top edge of the first tank body and feeds back signals to the controller, the erosion timer is connected with the controller, the controller controls the quantitative pump to send or draw liquid to the second tank body according to overflow signals of the overflow sensor and time signals of the erosion timer, and the liquid level change of the first tank body is controlled through the second tank body, so that the control of the erosion limit is performed.
Optionally, the communicating groove is separated by a partition plate to form the first groove body and the second groove body, and a communicating opening is arranged at the bottom of the partition plate.
Optionally, the volume ratio of the first groove body to the second groove body is 10-100:1.
Optionally, the first tank body is provided with a height-adjustable wall plate, and the overflow sensor is arranged at the top edge of the height-adjustable wall plate.
Optionally, the volume of the outer tank body is 2-10 times that of the communicating tank, the height of the outer tank body is higher than that of the communicating tank, and the bottom of the outer tank body is connected with the liquid storage tank.
The method for preparing the multicolor film layer on the metal surface comprises the following steps:
1) Forming a first color film layer on the surface of the metal product;
2) Placing a part to be corroded of a metal product into a first tank body of the corrosion device according to any one of claims 1-5, controlling the constant delivery pump to pump corrosive liquid from the liquid storage tank into the second tank body until the first tank body is in an overflow state through the controller, and after reacting for a preset time of the corrosion timer, controlling the constant delivery pump to pump liquid from the communication tank through the controller to transfer and rinse the metal product;
3) And forming a second color film layer on the surface of the corrosion part.
Optionally, the liquid level rising rate of the first tank body is 0.05 mm/s-0.8 mm/s.
Optionally, step 1) and step 3) are forming the first color film layer and the second color film layer by anodic oxidation, vapor deposition or electroplating.
Optionally, the metal article comprises titanium and its alloys, aluminum and its alloys, stainless steel, copper and its alloys.
Optionally, at least part of the surface of the metal product has a mesh structure.
The beneficial effects of the invention are as follows:
1. through the setting of intercommunication groove, the corrosion liquid level of the first cell body that makes to place metal product steadily rises to the surface to be corroded of submergence metal product based on intercommunication principle and overflow control mode, the fluctuation of liquid level is little in the first cell body, the liquid level lifting speed is controllable, thereby can control the change of corroding interface line, make the interface line even after corroding level, it links up effectually with once coloring the rete when carrying out secondary coloring treatment, the boundary is clear, there is not black variegation or existence of transition color, the outward appearance is pleasing to the eye, be particularly useful for the double-colored rete preparation on dysmorphism product or mesh structure product surface.
2. The corrosion device can realize automatic control, has strong controllability, can recycle the corrosive liquid, is safe and environment-friendly, and is suitable for actual production and application.
Drawings
FIG. 1 is a schematic view of a corrosion apparatus;
FIG. 2 is a schematic illustration of electrical connection;
fig. 3 is a schematic diagram of the product structure of the embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1 and 2, an etching apparatus for preparing a bi-color film layer on a metal surface includes a tank mechanism, a pipetting mechanism and a control mechanism. The groove mechanism comprises an outer groove body 1 and a communicating groove 2, wherein the communicating groove 2 is arranged in the outer groove body 1, the communicating groove 2 comprises a first groove body 21 and a second groove body 22, the bottoms of the first groove body 21 and the second groove body are mutually communicated, and the first groove body 21 is used for accommodating a part to be corroded of a metal product. The pipetting mechanism comprises a liquid storage tank 4 and a quantitative pump 5, and the quantitative pump 5 is connected with the liquid storage tank 4 and a second tank body 22; the control mechanism comprises a controller 6, an erosion timer 7 and an overflow sensor 8, wherein the overflow sensor 8 is arranged at the top edge of the first tank body 21 and feeds back signals to the controller 6, the erosion timer 7 is connected with the controller 6, and the controller 6 controls the constant delivery pump 5 to send or draw liquid to the second tank body 22 according to the overflow signals of the overflow sensor 8 and the time signals of the erosion timer 7.
Specifically, the communicating groove 2 is divided by a partition plate 3 to form the first groove body 21 and the second groove body 22, and a communicating opening 31 is formed at the bottom of the partition plate 3. The volume ratio of the first groove body 21 to the second groove body 22 formed in a separated mode is 10-100:1, and the heights are the same. The etching liquid is pumped into the second tank 22 by the constant delivery pump 5. Those skilled in the art will appreciate that when the etching liquid is directly pumped into the tank by the constant delivery pump 5, the liquid level fluctuates greatly due to the effect of the impact force, the liquid level change rate is not uniform, and the etching interface line is difficult to control. In this application, based on the communicating vessel principle, the corrosive liquid of second cell body 22 gets into in the first cell body 21 from the bottom via the intercommunication mouth 31 under the effect of liquid pressure, and the liquid level fluctuation of first cell body 21 is little, keeps a comparatively steady state. Meanwhile, the liquid level rising speed of the first tank body 21 can be controlled within a certain range through the proportion of the volumes of the two tank bodies, so that the liquid level rising speed is uniformly, slowly and stably increased, and the corrosion interface line is controlled.
Further, the first tank 21 has a height-adjustable wall 211, and the overflow sensor 8 is disposed at a top edge of the height-adjustable wall 211. The height-adjustable wall 211 may be realized in particular by replacing wall plates of different heights or telescopic wall plates, etc., the height of which determines the height of the overflow (i.e. the height of the corrosion).
The volume of the outer tank body 1 is 2-10 times that of the communication tank 2, the height of the outer tank body 1 is higher than that of the communication tank 2, and the bottom of the outer tank body 1 is connected with the liquid storage tank 4. The corrosive liquid overflowed from the communicating groove 2 flows into the outer groove body 1 and can further flow back to the liquid storage groove 4, so that the waste of the corrosive liquid and the pollution to the environment are avoided. Specifically, the reflux mode can be realized by setting a height difference between the two modes or setting a liquid pump and the like.
The fixed displacement pump 5 has the functions of pumping liquid and liquid, the pump core is made of corrosion-resistant ceramic or hastelloy, the corrosive liquid can be pumped into the communicating groove 2 from the liquid storage groove 4, and after corrosion is finished, the corrosive liquid in the communicating groove 2 can be pumped back into the liquid storage groove 4, so that the metal product can be taken out conveniently and the corrosive liquid can be recycled.
A method for preparing a bicolor film layer on the metal surface based on the corrosion device comprises the steps of forming a first color film layer on the metal product surface, carrying out local corrosion by the corrosion device to remove part of the first color film layer, and forming a second color film layer on the corrosion part surface.
In particular, the treated metal article may be, for example, titanium and its alloys, aluminum and its alloys, stainless steel, copper and its alloys, and the like. The first color film layer can be formed on the surface of the metal product by means of anodic oxidation, vapor deposition, electroplating and the like. Then, the part to be corroded of the metal product is placed in a first tank body 21 of the corrosion device, the controller 6 controls the constant delivery pump 5 to pump the corrosive liquid from the liquid storage tank 4 to the second tank body 22 until the first tank body 21 is in an overflow state and triggers the overflow sensor 8, the overflow sensor 8 feeds back a signal to the controller 6, and the controller 6 controls the constant delivery pump 5 to stop working and simultaneously sends a signal to the corrosion timer 7 to start timing until the set time is reached for reaction. After the reaction is carried out for a preset time, the corrosion timer 7 feeds back a signal to the controller 6, the controller 6 controls the constant delivery pump 5 to pump liquid from the communication groove 2, the metal product is transferred and rinsed, the first color film layer on the surface of the corrosion part is removed, and then the second color film layer is formed on the surface of the corrosion part in the modes of anodic oxidation, vapor deposition, electroplating and the like.
The rising speed of the corroded liquid surface of the first tank body 21 needs to be controlled within a certain range, and the rising speed of the liquid surface is too high, so that the fluctuation of the liquid surface is large, the interface line is uneven, and the appearance quality is poor; too slow a rise will cause an increase in the degree of corrosion, which tends to cause black mottle at the interface. In the process of quantitatively pumping the corrosion solution, the flow is controlled to be 0.001-0.02 m 3 And/s so that the liquid level rising rate of the first tank body 21 is controlled to be between 0.05mm/s and 0.8mm/s.
By changing the portion of the metal product immersed in the first tank body 21 and repeating the above steps, a third color film layer, a fourth color film layer, etc. can also be formed on the surface of the metal product, thereby realizing a multicolor surface.
In the embodiment, most of orthopedic medical implants are made of special-shaped porous metal materials, and the orthopedic medical implants are of various types and can be realized by a method of forming a bicolor or polychromatic film layer on the surface so as to facilitate rapid differentiation. A spinal interbody fusion cage component is provided, which is of a cylindrical structure of a mesh wall body, has a pore diameter of 25mm and is made of titanium. Forming an oxidation film of a first color on the surface of the spine interbody fusion cage component through an anodic oxidation method, and then placing the spine interbody fusion cage component in a first groove body with half height, wherein the volume ratio of the first groove body to the second groove body is 50:1. pumping a mixed solution of corrosive liquid nitric acid and hydrofluoric acid into a second tank body, controlling the liquid level rising rate of the first tank body to be 0.4mm/s to overflow, reacting for 5s, transferring the liquid to purified water for rinsing after liquid pumping, forming an oxide film with a second color on part of the surface of the oxide film with the first color removed by an anodic oxidation method, specifically controlling the formed oxide film by anodic oxidation voltage, and forming different colors by interference. As shown in figure 3, the formed product has clear two-color interface, no impurity color or transition color and the like, and good effect.
The above embodiment is only used for further illustrating a corrosion device and a corrosion method for preparing a bi-color film layer on a metal surface, but the present invention is not limited to the embodiment, and any simple modification, equivalent variation and modification of the above embodiment according to the technical substance of the present invention falls within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a corrosion device of metal surface preparation double-colored rete which characterized in that: comprises a groove mechanism, a pipetting mechanism and a control mechanism; the groove mechanism comprises an outer groove body and a communication groove, wherein the communication groove is arranged in the outer groove body, the communication groove comprises a first groove body and a second groove body, the bottoms of the first groove body and the second groove body are mutually communicated, and the first groove body is used for accommodating a part to be corroded of a metal product; the liquid transferring mechanism comprises a liquid storage tank for storing corrosive liquid and a quantitative pump, and the quantitative pump is connected with the liquid storage tank and the second tank body; the control mechanism comprises a controller, an erosion timer and an overflow sensor, wherein the overflow sensor is arranged at the top edge of the first tank body and feeds back signals to the controller, the erosion timer is connected with the controller, and the controller controls the constant delivery pump to send or draw liquid to the second tank body according to overflow signals of the overflow sensor and time signals of the erosion timer, and controls the liquid level change of the first tank body through the second tank body.
2. The etching apparatus according to claim 1, wherein: the communication groove is separated by a partition plate to form the first groove body and the second groove body, and a communication port is formed in the bottom of the partition plate.
3. The etching apparatus according to claim 1, wherein: the volume ratio of the first groove body to the second groove body is 10-100:1.
4. The etching apparatus according to claim 1, wherein: the first groove body is provided with a height-adjustable wall plate, and the overflow sensor is arranged at the top edge of the height-adjustable wall plate.
5. The etching apparatus according to claim 1, wherein: the volume of the outer tank body is 2-10 times that of the communicating groove, the height of the outer tank body is higher than that of the communicating groove, and the bottom of the outer tank body is connected with the liquid storage tank.
6. The method for preparing the multicolor film layer on the metal surface is characterized by comprising the following steps of:
1) Forming a first color film layer on the surface of the metal product;
2) Placing a part to be corroded of a metal product into a first tank body of the corrosion device according to any one of claims 1-5, controlling the constant delivery pump to pump corrosive liquid from the liquid storage tank into the second tank body until the first tank body is in an overflow state through the controller, and after the corrosion timer is reacted for a preset time, controlling the constant delivery pump to pump liquid from the communication tank through the controller to transfer and rinse the metal product;
3) Forming a second color film layer on the surface of the etched part.
7. The method for preparing a multicolor film layer on a metal surface according to claim 6, wherein: the liquid level rising speed of the first tank body is 0.05 mm/s-0.8 mm/s.
8. The method for preparing a multicolor film layer on a metal surface according to claim 6, wherein: step 1) and step 3) are forming the first color film layer and the second color film layer by anodic oxidation, vapor deposition, or electroplating.
9. The method for preparing a multicolor film layer on a metal surface according to claim 6, wherein: the metal article includes titanium and its alloys, aluminum and its alloys, stainless steel, copper and its alloys.
10. The method for preparing a multicolor film layer on a metal surface according to claim 6, wherein: at least part of the surface of the metal product has a mesh structure.
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| US20130075262A1 (en) * | 2011-09-22 | 2013-03-28 | Catcher Technology Co., Ltd. | Method of forming anodic titanium oxide layers having dual-color appearance and article having the same |
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|---|---|---|---|---|
| CN202105833U (en) * | 2011-03-30 | 2012-01-11 | 江苏尚能光伏精密设备有限公司 | High-precision automatic fluid supplementing system |
| CN203653736U (en) * | 2013-12-31 | 2014-06-18 | 肇庆华锋电子铝箔股份有限公司 | Aluminium foil semi-linkage electrochemical corrosion device for laboratory |
| CN204029835U (en) * | 2014-06-21 | 2014-12-17 | 润峰电力有限公司 | A kind of back of the body burnishing device of crystal silicon solar batteries |
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| CN108004580A (en) | 2018-05-08 |
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