CN211284588U - Composite low-temperature anodic oxidation device - Google Patents
Composite low-temperature anodic oxidation device Download PDFInfo
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- CN211284588U CN211284588U CN201921753931.3U CN201921753931U CN211284588U CN 211284588 U CN211284588 U CN 211284588U CN 201921753931 U CN201921753931 U CN 201921753931U CN 211284588 U CN211284588 U CN 211284588U
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Abstract
The utility model discloses a composite low-temperature anodic oxidation device, which comprises a circulating cooling device, a reaction device and an air cooling device; the temperature of anodic oxidation reaction is reduced by combining two cooling modes of air cooling and circulating cooling. The utility model provides a compound low temperature anodic oxidation device cooling is effectual, can effectively improve the film forming quality on aluminum alloy surface.
Description
Technical Field
The utility model relates to an anodic oxidation device technical field, more specifically relates to a compound low temperature anodic oxidation device.
Background
Aluminum alloys are the most widely used class of non-ferrous structural materials in industry and have found a number of applications in the aerospace, automotive, mechanical manufacturing, marine and chemical industries. The rapid development of industrial economy has increased the demand for aluminum alloy welded structural members, and the research on the weldability of aluminum alloys is also deepened. Aluminum alloys are currently the most used alloys. However, the aluminum alloy has the defects of light and soft quality, low hardness, poor corrosion resistance, low melting point and the like, and is subject to scaling in the industry. Therefore, in order to improve the surface hardness, corrosion resistance, melting point, and the like of the aluminum alloy, it is necessary to perform surface treatment on the aluminum alloy, and anodizing is the most common surface treatment means for aluminum and aluminum alloys. The process of forming dense alumina film on the surface of aluminum alloy product by means of electrolysis is called anodic oxidation treatment of aluminum alloy. The aluminum alloy product subjected to the anodic oxidation treatment is referred to as an aluminum alloy anode product.
The surface of the aluminum alloy is anodized and plated with an anodic oxide film, so that the surface performance of the aluminum alloy can be greatly improved. However, the anodic oxidation process is a process with a large amount of heat release, in the conventional device, the anodic oxidation process is carried out at normal temperature, the temperature is gradually increased along with the reaction process, the temperature is too high, the oxide film gap is increased, even dissolved, and the film forming effect is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compound low temperature anodic oxidation device to not enough among the prior art, reduce the temperature of anodic oxidation reaction through air-cooling and circulative cooling, improve aluminum alloy surface film forming quality.
The purpose of the utility model is realized through the following technical scheme:
a composite low-temperature anodic oxidation device comprises a circulating cooling device, a reaction device and an air cooling device;
the circulating cooling device comprises a vacuum heat-insulating container filled with a cooling medium, a cooling copper pipe is arranged in the vacuum heat-insulating container, a refrigerant is filled in the cooling copper pipe, a water inlet and a water outlet of the cooling copper pipe are connected with a compressor, and a temperature controller is arranged on the compressor;
the reaction device is arranged in the vacuum heat-insulation container and comprises an electrolytic bath and a power supply, an anode fixing frame and a cathode plate are arranged on the electrolytic bath, a supporting frame is arranged between the anode fixing frame and the cathode plate, a mechanical stirrer and a temperature sensor are arranged on the supporting frame, the mechanical stirrer and the temperature sensor are suspended in the electrolytic bath, and the anode fixing frame and the cathode plate are respectively connected with the anode and the cathode of the power supply;
the gas cooling device comprises a liquid nitrogen tank, a gas supply pipeline and a gas dispersing device for dispersing nitrogen, wherein the liquid nitrogen tank is communicated with the electrolytic cell through the gas supply pipeline, and the gas dispersing device is arranged in the electrolytic cell.
Furthermore, the cooling copper pipe is arranged on the inner wall of the vacuum heat-insulating container in a surrounding mode.
Further, the vacuum heat-insulating container comprises an outer shell and an inner shell which are made of stainless steel materials, and a vacuum inner cavity is arranged between the outer shell and the inner shell.
Further, the compressor is any one of a piston compressor, a screw compressor and a centrifugal compressor.
Further, the gas dispersion device is a gas dispersion pipe, the gas dispersion pipe is provided with vent holes, and the gas dispersion pipe is connected with a gas supply pipeline.
Further, the gas dispersion pipes are uniformly arranged at the bottom of the electrolytic cell in an S shape or are arranged on the inner wall of the electrolytic cell in a surrounding way.
Further, the gas dispersing device is a ventilation baffle plate, a ventilation hole is formed in the ventilation baffle plate, and the ventilation baffle plate is installed above the connection position of the gas supply pipeline and the electrolytic cell.
Further, an anode hanger is hung on the anode fixing frame, and the anode hanger is a titanium alloy clamping groove or a titanium alloy clamp.
Furthermore, the anode fixing frame is made of stainless steel and is hung at the opening of the electrolytic tank.
Furthermore, bulges are arranged on two sides of the negative plate, corresponding notches are arranged on the electrolytic cell, and the bulges are matched with the notches to fix the negative plate.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model cools the electrolyte through two heat dissipation modes of air cooling and circulating cooling, introduces low-temperature nitrogen into the electrolytic cell, and under the action of the gas dispersion device, the ejected nitrogen is uniformly dispersed into tiny bubbles to take away a large amount of heat; on the other hand, the electrolytic bath is arranged in a vacuum heat-insulating container, a cooling copper pipe is arranged in the vacuum heat-insulating container to absorb heat so as to provide a low-temperature environment for the anodic oxidation device, the anodic oxidation solution is cooled in time through two heat dissipation modes, the adverse effect of high temperature on the performance of the oxidation film in the oxidation process is eliminated, and the working performance of the oxidation film is improved.
The utility model discloses well positive pole mount hangs at the electrolysis trough mouth, can freely remove on the guide rail of electrolysis trough mouth, and then the distance between aluminium alloy sample and the negative plate on the adjustment positive pole anchor clamps reaches the purpose of controlling means impedance.
The utility model discloses set up rabbling mechanism between positive pole hanger and negative plate for the heat exchange rate of anodic oxidation solution, it is even to also make the electrolyte keep the composition at the anodic oxidation in-process, thereby makes the even film forming of aluminum alloy sample.
Drawings
Fig. 1 is a composite low-temperature anodizing apparatus provided in embodiment 1;
fig. 2 is a composite low-temperature anodic oxidation apparatus provided in example 2.
The device comprises a vacuum heat-preservation container 1, a power supply 2, an electrolytic bath 3, a cooling copper pipe 4, a cooling medium 5, an anode fixing frame 6, an anode hanger 7, an aluminum alloy to be treated 8, a support frame 9, a mechanical stirrer 10, a temperature sensor 11, a cathode plate 12, a liquid nitrogen tank 13, a gas supply pipeline 14, a ventilation baffle 15, a valve 16 and a gas dispersion pipe 17.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the invention; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the invention.
Example 1
As shown in fig. 1, the present embodiment provides a composite low-temperature anodic oxidation apparatus, which includes a circulation cooling apparatus, a reaction apparatus, and an air cooling apparatus.
The circulating cooling device comprises a vacuum heat-insulating container 1, the vacuum heat-insulating container 1 is made of stainless steel, the vacuum heat-insulating container 1 comprises an outer shell and an inner shell, and a vacuum inner cavity is arranged between the outer shell and the inner shell to achieve the heat-insulating effect. A cooling copper pipe 4 is arranged in the vacuum heat-insulating container 1 and is arranged on the inner wall of the vacuum heat-insulating container 1 in a surrounding way. The water inlet and the water outlet of the cooling copper pipe 4 are connected with a compressor (not shown in the figure), and R600a refrigerant is filled in the cooling copper pipe 4. The compressor may be any one of a piston compressor, a screw compressor, and a centrifugal compressor is preferred in the present embodiment. The compressor is provided with a temperature controller for adjusting the refrigeration temperature of the compressor, thereby controlling the reaction temperature in the anodic oxidation process. The vacuum heat-insulating container 1 is filled with a cooling medium 5, and specifically, the cooling medium 5 used in the present embodiment has the following components: 80% ethanol, 20% methanol; the cooling medium 5 has the characteristics of extremely low freezing point, small density, large specific heat capacity, easy volatilization, heat absorption and the like.
The reaction device is arranged in the vacuum heat-insulating container 1 and comprises an electrolytic bath 3 and a power supply 2, an anode fixing frame 6 and a cathode plate 12 are arranged on the electrolytic bath 3, wherein the anode fixing frame 6 is made of stainless steel and is hung on the notch of the electrolytic bath 3, an anode hanger 7 is hung on the anode fixing frame 6, and the anode hanger 7 is a titanium alloy clamping groove or a titanium alloy clamp; the anode fixing frame 6 can move freely on the notch of the electrolytic bath 3, so as to adjust the distance between the anode hanger 7 and the cathode plate 12 and achieve the aim of controlling the impedance of the device; the two sides of the negative plate 12 are provided with bulges, the electrolytic tank 3 is provided with corresponding notches, the bulges are matched with the notches to fix the negative plate 12 on the electrolytic tank 3, and the negative plate 12 is provided with a lead plate clamping groove. The anode fixing frame 6 and the cathode plate 12 are respectively connected with the anode and the cathode of the power supply 2, and the power supply 2 used in the embodiment is an adjustable constant-current constant-voltage power supply.
A support frame 9 is arranged between the anode fixing frame 6 and the cathode plate 12, a mechanical stirrer 10 and a temperature sensor 11 are arranged on the support frame 9, the mechanical stirrer and the temperature sensor are suspended inside the electrolytic cell 3, and in the anodic oxidation process, the mechanical stirrer 10 stirs the electrolyte, so that the components of the electrolyte are kept uniform, and the heat exchange efficiency is accelerated; the temperature sensor 11 can feed back the temperature of the electrolyte in real time.
The gas cooling device comprises a liquid nitrogen tank 13, a gas supply pipeline 14 and a gas dispersing device for dispersing nitrogen, wherein the liquid nitrogen tank 13 is connected with the electrolytic cell 3 through the gas supply pipeline 14, and a valve 16 is arranged on the gas supply pipeline 14, so that the size of nitrogen gas flow can be conveniently controlled. In the embodiment, the gas dispersing device is a ventilating baffle plate 15, the ventilating baffle plate 15 is provided with ventilating holes, and the ventilating baffle plate 15 is arranged above the connection part of the gas supply pipeline 14 and the electrolytic bath 3; the low-temperature nitrogen ejected from the liquid nitrogen tank 13 is dispersed into fine bubbles through the vent holes on the vent baffle 15, and enters the electrolyte to be cooled.
The working process of the composite low-temperature anodic oxidation device provided by the embodiment is as follows: hanging an aluminum alloy 8 to be treated on an anode hanger 7, fixing the anode hanger 7 on an anode fixing frame 6 to be used as an anode part of an oxidation device, putting a lead plate into a clamping groove of a cathode plate 12 to be used as a cathode part, moving the anode fixing frame 6 to adjust the distance between a cathode and an anode, then putting an electrolytic tank 3 into a vacuum heat-preservation container 1, pouring a proper amount of cooling medium 5 into the vacuum heat-preservation container 1, turning on a compressor and a temperature controller, and cooling a copper cooling pipe 4 to start refrigeration after setting the temperature; then, a proper amount of the electrolyte is poured into the electrolytic bath 3. Then the stirring device and the temperature sensor 11 are opened, the valve 16 is opened, low-temperature nitrogen is introduced into the electrolytic tank 3, when the temperature sensor 11 reads the target temperature, the valve 16 is adjusted to control the flow of the nitrogen, the temperature of the electrolyte is kept stable, one end of the anode fixing frame 6 is connected to the anode of the power supply 2, one end of the cathode plate 12 is connected to the cathode of the power supply 2, and the anodic oxidation reaction is started.
Example 2
As shown in fig. 2, the present embodiment provides a composite type low-temperature anodic oxidation apparatus, which has a structure similar to that of embodiment 1, and includes a circulation cooling apparatus, a reaction apparatus, and an air cooling apparatus. The difference from the embodiment 1 is that a guide rail is arranged on the notch of the electrolytic cell 3, a slide block is arranged on the anode fixing frame 6 at the position contacting with the guide rail, and the slide block slides on the guide rail to drive the anode fixing frame 6 to move on the notch of the electrolytic cell 3. Scales are marked on the guide rail, and millimeter scales are marked by taking a notch for fixing the cathode plate 12 as an original point; when in use, the distance between the anode hanger 7 and the cathode plate 12 can be accurately adjusted according to the scales of the notch of the electrolytic cell 3, and the impedance of the device is adjusted.
In this embodiment, the gas dispersing device is a gas dispersing pipe 17, and the gas dispersing pipe 17 is arranged at the bottom of the electrolytic cell 3 in an S-shape. Fine vent holes are uniformly formed in the gas dispersion pipe 17. The gas dispersion pipe 17 is connected with the gas supply pipeline 14, and low-temperature nitrogen ejected from the liquid nitrogen tank 13 is dispersed into fine bubbles under the action of the gas dispersion pipe 17 and escapes from the vent holes, and enters the electrolyte to carry away a large amount of heat.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A composite low-temperature anodic oxidation device is characterized by comprising a circulating cooling device, a reaction device and an air cooling device;
the circulating cooling device comprises a vacuum heat-insulating container filled with a cooling medium, a cooling copper pipe is arranged in the vacuum heat-insulating container, a refrigerant is filled in the cooling copper pipe, a water inlet and a water outlet of the cooling copper pipe are connected with a compressor, and a temperature controller is arranged on the compressor;
the reaction device is arranged in the vacuum heat-insulation container and comprises an electrolytic bath and a power supply, an anode fixing frame and a cathode plate are arranged on the electrolytic bath, a supporting frame is arranged between the anode fixing frame and the cathode plate, a mechanical stirrer and a temperature sensor are arranged on the supporting frame, the mechanical stirrer and the temperature sensor are suspended in the electrolytic bath, and the anode fixing frame and the cathode plate are respectively connected with the anode and the cathode of the power supply;
the gas cooling device comprises a liquid nitrogen tank, a gas supply pipeline and a gas dispersing device for dispersing nitrogen, wherein the liquid nitrogen tank is communicated with the electrolytic cell through the gas supply pipeline, and the gas dispersing device is arranged in the electrolytic cell.
2. The composite type low-temperature anodic oxidation device according to claim 1, wherein the cooling copper pipe is arranged on the inner wall of the vacuum heat-insulating container in a surrounding manner.
3. The composite type low-temperature anodic oxidation device of claim 1, wherein the vacuum heat-preservation container comprises an outer shell and an inner shell which are made of stainless steel materials, and a vacuum inner cavity is arranged between the outer shell and the inner shell.
4. The composite type low-temperature anodic oxidation device according to claim 1, wherein the compressor is any one of a piston compressor, a screw compressor and a centrifugal compressor.
5. The composite type low-temperature anodic oxidation device according to claim 1, wherein the gas dispersion device is a gas dispersion pipe, vent holes are arranged on the gas dispersion pipe, and the gas dispersion pipe is connected with a gas supply pipeline.
6. The composite type low-temperature anodic oxidation device according to claim 5, wherein the gas dispersion pipes are arranged on the bottom of the electrolytic cell or on the inner wall of the electrolytic cell in an S shape.
7. The composite type low-temperature anodizing device of claim 1, wherein the gas dispersing device is a vent baffle plate, vent holes are formed in the vent baffle plate, and the vent baffle plate is installed above the connection position of a gas supply pipeline and an electrolytic cell.
8. The composite type low-temperature anodic oxidation device of claim 1, wherein an anode hanger is hung on the anode fixing frame, and the anode hanger is a titanium alloy clamping groove or a titanium alloy clamp.
9. The composite type low-temperature anodic oxidation device of claim 8, wherein the anode fixing frame is made of stainless steel, and the anode fixing frame is hung at the opening of the electrolytic cell.
10. The composite type low-temperature anodic oxidation device of claim 1, wherein protrusions are arranged on two sides of the cathode plate, corresponding notches are arranged on the electrolytic cell, and the protrusions and the notches are matched to fix the cathode plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921753931.3U CN211284588U (en) | 2019-10-18 | 2019-10-18 | Composite low-temperature anodic oxidation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921753931.3U CN211284588U (en) | 2019-10-18 | 2019-10-18 | Composite low-temperature anodic oxidation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718309A (en) * | 2021-09-01 | 2021-11-30 | 天长市京发铝业有限公司 | Aluminum plate anodic oxidation equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718309A (en) * | 2021-09-01 | 2021-11-30 | 天长市京发铝业有限公司 | Aluminum plate anodic oxidation equipment |
| CN113718309B (en) * | 2021-09-01 | 2023-12-15 | 天长市京发铝业有限公司 | Aluminum plate anodic oxidation equipment |
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