CN111118567A - Micro-arc oxidation device and preparation method of aviation packaging tray oxidation film layer - Google Patents
Micro-arc oxidation device and preparation method of aviation packaging tray oxidation film layer Download PDFInfo
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- CN111118567A CN111118567A CN202010053232.9A CN202010053232A CN111118567A CN 111118567 A CN111118567 A CN 111118567A CN 202010053232 A CN202010053232 A CN 202010053232A CN 111118567 A CN111118567 A CN 111118567A
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- 238000007745 plasma electrolytic oxidation reaction Methods 0.000 title claims abstract description 145
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 230000003647 oxidation Effects 0.000 title claims description 20
- 238000007254 oxidation reaction Methods 0.000 title claims description 20
- 239000003792 electrolyte Substances 0.000 claims abstract description 47
- 238000003860 storage Methods 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000012459 cleaning agent Substances 0.000 claims description 24
- 239000010935 stainless steel Substances 0.000 claims description 23
- 229910001220 stainless steel Inorganic materials 0.000 claims description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 8
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 7
- PHIQPXBZDGYJOG-UHFFFAOYSA-N sodium silicate nonahydrate Chemical compound O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-][Si]([O-])=O PHIQPXBZDGYJOG-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 5
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 5
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 5
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 5
- 239000001488 sodium phosphate Substances 0.000 claims description 5
- 235000011008 sodium phosphates Nutrition 0.000 claims description 5
- 235000019830 sodium polyphosphate Nutrition 0.000 claims description 5
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- -1 sodium silicate pentahydrate Chemical class 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000002679 ablation Methods 0.000 abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 8
- HQAITFAUVZBHNB-UHFFFAOYSA-N sodium;pentahydrate Chemical compound O.O.O.O.O.[Na] HQAITFAUVZBHNB-UHFFFAOYSA-N 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/005—Apparatus specially adapted for electrolytic conversion coating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/026—Anodisation with spark discharge
-
- 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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a micro-arc oxidation device, which comprises a micro-arc oxidation power supply, wherein the anode of the micro-arc oxidation power supply is connected with an anode, the cathode of the micro-arc oxidation power supply is connected with a cathode plate, the cathode plate is fixedly connected with a micro-arc oxidation tank, the bottom of the micro-arc oxidation tank is provided with an opening, an aviation containerized tray is installed in the opening, the top of the aviation containerized tray is fixedly connected to the bottom of the anode through an aluminum screw, a solution storage tank is arranged outside the micro-arc oxidation tank, electrolyte is stored in the solution storage tank, the micro-arc oxidation tank is connected with a water outlet of a refrigerator through a pipeline, the solution storage tank is connected with a water inlet of the refrigerator through a pipeline, the micro-arc oxidation; the invention also discloses a preparation method of the aviation containerized tray oxide film layer. The problems of ablation, uneven color and insufficient thickness easily occur when the aviation packaging tray is oxidized in the prior art are solved.
Description
Technical Field
The invention belongs to the technical field of metal surface treatment, relates to a micro-arc oxidation device, and further relates to a method for preparing an aviation containerized tray oxidation film layer by using the micro-arc oxidation device.
Background
The aluminum alloy aviation packaging tray is developed on the basis of a wood tray, a plastic tray and a steel tray. As a novel unit device for packaging, stacking, carrying and transporting, the aluminum alloy aviation packaging tray has the characteristics of sanitation, cleanness, no water absorption, easy washing, no insect damage and no bacteria. Compared with steel pallets, the aluminum alloy aviation container pallet is light in weight, and the weight of the aluminum alloy aviation container pallet is only equal to 1/3 of the steel pallet under the same specification. In addition, the special low-temperature performance of the aluminum alloy is particularly suitable for low-temperature occasions such as a refrigeration house and the like. However, in special air transportation, the aluminum alloy air container pallet is required to have good corrosion resistance and wear resistance under severe use conditions. Common dimensional specifications for aluminum alloy sheets on the surface of an air container pallet are 1200mm × 800mm × 2mm, 1200mm × 1000mm × 2mm, 1140 × 1140mm × 2mm, 2600mm × 2100mm × 2 mm. For an air pallet tray of dimensions 2600mm x 2100mm x 2mm, the surface area is about 1100dm2When the existing micro-arc oxidation process is used for oxidation treatment, the problems of ablation, uneven color, insufficient thickness and the like easily occur on the surface.
Disclosure of Invention
The invention aims to provide a micro-arc oxidation device which has the characteristics of improving the corrosion resistance and the wear resistance of an oxide film layer.
The invention also aims to provide a method for preparing an oxidation film layer of an aviation containerized tray by adopting the micro-arc oxidation device, and solves the problems of ablation, uneven color and insufficient thickness of the aviation containerized tray in the prior art during micro-arc oxidation.
According to the technical scheme, the micro-arc oxidation device comprises a micro-arc oxidation power supply, the anode of the micro-arc oxidation power supply is connected with an anode, the cathode of the micro-arc oxidation power supply is connected with a cathode plate, the cathode plate is fixedly connected with a micro-arc oxidation tank, the bottom of the micro-arc oxidation tank is provided with an opening, an aviation containerization tray is installed in the opening, the top of the aviation containerization tray is fixedly connected to the bottom of the anode through an aluminum screw, a solution storage tank is arranged on the outer side of the micro-arc oxidation tank and stores electrolyte, the micro-arc oxidation tank is connected with a water outlet of a refrigerator through a pipeline, the solution storage tank is connected with a water inlet of the refrigerator through a pipeline, the micro-arc oxidation tank is connected with an air compressor through a.
The technical scheme of the invention is also characterized in that:
the supporting assembly comprises at least two supporting frames, two fixed pulleys are oppositely arranged on the upper parts of the two supporting frames, a steel wire rope is wound on the two fixed pulleys, the steel wire rope is provided with at least three leading-out ends, the two leading-out ends are fixedly connected with two ends of the stainless steel row respectively, and the third leading-out end is connected with the direct-current speed reduction motor;
the stainless steel row is fixedly connected with the top of the anode through a nylon plate.
Two opposite outer side surfaces of the micro-arc oxidation tank are provided with angle steel, the angle steel is close to the notch of the micro-arc oxidation tank, and the micro-arc oxidation tank is clamped at the notch of the solution storage tank through the angle steel.
A ball valve is arranged on the body of the micro-arc oxidation tank connected with the pipeline; the body of the solution storage tank connected with the pipeline is provided with a ball valve.
The anode is an aluminum bar or a copper bar, and the anode of the micro-arc oxidation power supply is fixedly connected with the anode through a copper wire.
The negative electrode of the micro-arc oxidation power supply is fixedly connected with the negative plate through a copper wire;
the negative plate comprises a copper bar, at least five stainless steel plates are uniformly arranged on the copper bar body, and the stainless steel plates are perpendicular to the copper bar and extend out of the copper bar; the stainless steel plate is fixedly connected on the inner wall of the micro-arc oxidation tank through stainless steel screws.
The invention adopts another technical scheme that the preparation method of the aviation containerized tray oxidation film layer adopts the micro-arc oxidation device and is implemented according to the following steps:
step 1, cleaning stains on the surface of an aviation container tray by using a metal cleaning agent for later use;
Uniformly stirring solute a, solute b and water to obtain electrolyte, and adding the electrolyte into a solution storage tank;
The other technical scheme of the invention is also characterized in that:
the solute a is any one of sodium silicate nonahydrate and sodium silicate pentahydrate; the solute b is any one of sodium phosphate, sodium dihydrogen phosphate, disodium hydrogen phosphate and sodium polyphosphate; the mass percent of the solute a is 0.4-0.5%, the mass percent of the solute b is 3.0-3.5%, and the balance is water; the metal cleaning agent is a JH-1251 phosphorus-free environment-friendly industrial cleaning agent.
Parameters of the micro-arc oxidation power supply: the micro-arc oxidation voltage is 620V, the frequency is 500Hz, and the duty ratio is 15-25%.
The output pressure of the air compressor is 1-1.5 MPa; the rising speed of the direct current speed reducing motor is 0.1 mm/s-0.2 mm/s.
The invention has the beneficial effects that:
(1) the micro-arc oxidation device provided by the invention has the advantages that the micron-sized oxidation film layer is oxidized on the surface of the aviation integrated tray, and the oxidation film layer has the characteristics of high hardness, uniform surface color, no crack, good corrosion resistance and good wear resistance.
(2) The preparation method of the oxidation film layer of the aviation containerization tray has the advantages of simple process and low cost; according to the preparation method of the aviation packaging tray oxide film layer, the prepared oxide film layer has the characteristics of high hardness, uniform surface color, no crack and uniform thickness, and has good corrosion resistance and wear resistance;
according to the preparation method of the aviation containerized tray oxide film layer, the micron-sized micro-arc oxide film layer is prepared on the surface of the aviation containerized tray with a larger size by moving the anode, so that the preparation method is simple and convenient to operate, easy to control and low in power requirement on power supply equipment;
the preparation method of the aeronautical containerized tray oxidation film layer can improve the growth rate of the micro-arc oxidation film layer, prolong the service life of the micro-arc oxidation film layer and shorten the processing time of the micro-arc oxidation film layer, thereby improving the production efficiency of the micro-arc oxidation film layer.
Drawings
FIG. 1 is a schematic structural diagram of a micro-arc oxidation apparatus according to the present invention;
FIG. 2 is a front view of a micro-arc oxidation tank in the micro-arc oxidation apparatus according to the present invention;
FIG. 3 is a plan view of a micro-arc oxidation tank in the micro-arc oxidation apparatus according to the present invention.
In the figure, 1, an anode, 2, an aeronautical container tray, 3, a cathode plate, 4, a micro-arc oxidation tank, 5, a solution storage tank, 6, a refrigerator, 7, an air compressor, 8, a micro-arc oxidation power supply, 9, a direct current speed reducing motor, 10, a support frame and 11, a stainless steel bar are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a micro-arc oxidation device, which has a structure shown in figure 1 and comprises a micro-arc oxidation power supply 8, wherein the anode of the micro-arc oxidation power supply 8 is connected with an anode 1, the cathode of the micro-arc oxidation power supply 8 is connected with a cathode plate 3, the cathode plate 3 is fixedly connected with a micro-arc oxidation tank 4, the bottom of the micro-arc oxidation tank 4 is provided with an opening, an aviation container tray 2 is arranged in the opening, the top of the aviation container tray 2 is fixedly connected to the bottom of the anode 1 through an aluminum screw, the outer side of the micro-arc oxidation tank 4 is provided with a solution storage tank 5, electrolyte is stored in the solution storage tank 5, the micro-arc oxidation tank 4 is connected with a water outlet of a refrigerator 6 through a pipeline, the solution storage; the top of positive pole 1 rigid coupling has stainless steel to arrange 11, and stainless steel is arranged 11 and is connected with direct current gear motor 9 through supporting component.
The aviation containerization tray 2 is an aluminum alloy aviation containerization tray or a titanium alloy aviation containerization tray.
Preferably, the support assembly comprises at least two support frames 10, two fixed pulleys are oppositely arranged on the upper parts of the two support frames 10, a steel wire rope is wound on the two fixed pulleys, the steel wire rope is provided with at least three leading-out ends, the two leading-out ends are respectively and fixedly connected with two ends of the stainless steel row 11, and the third leading-out end is connected with the direct current speed reduction motor 9; the stainless steel row 11 is fixedly connected with the top of the anode 1 through a nylon plate.
Preferably, two opposite outer side surfaces of the micro-arc oxidation tank 4 are provided with angle steel, the angle steel is close to the notch of the micro-arc oxidation tank, and the micro-arc oxidation tank 4 is clamped at the notch of the solution storage tank 5 through the angle steel.
Preferably, a ball valve is arranged on a body of the micro-arc oxidation tank 4 connected with the pipeline; the body of the solution storage tank 5 connected with the pipeline is provided with a ball valve.
Preferably, the anode 1 is an aluminum bar or a copper bar, and the anode of the micro-arc oxidation power supply 8 is fixedly connected with the anode 1 through a copper wire. The negative electrode of the micro-arc oxidation power supply 8 is fixedly connected with the copper bar through a copper wire; the structure is shown in fig. 2 and 3, the cathode plate 3 comprises a copper bar, at least five stainless steel plates are uniformly arranged on the body of the copper bar, and the stainless steel plates are perpendicular to the copper bar and extend out of the copper bar; the stainless steel plate is fixedly connected on the inner wall of the micro-arc oxidation tank 4 through stainless steel screws.
The invention relates to a micro-arc oxidation device, which has the working principle that:
the electrolyte flows into the micro-arc oxidation tank 4 after being cooled by the refrigerator 6 from the solution storage tank 5, and then flows into the solution storage tank 5 from the opening at the bottom of the micro-arc oxidation tank 4 to form circulation. After the aviation containerized tray 2 is placed into the micro-arc oxidation tank 4, starting a refrigerator 6, an air compressor 7 and a micro-arc oxidation power supply 8, setting parameters of the micro-arc oxidation power supply, starting a direct current speed reducing motor 9 when the voltage reaches a set value, and enabling the aviation containerized tray 2 to move at a constant speed relative to the micro-arc oxidation tank 4 under the driving of the direct current speed reducing motor 9; the refrigerator 6 can ensure the temperature of the electrolyte to be kept in a proper temperature range, and the air compressor 7 mainly ensures the ion distribution of the electrolyte to be uniform;
the micro-arc oxidation film with the required thickness, uniform and consistent color, excellent film abrasion resistance and corrosion resistance is prepared on the aviation integrated tray 2 by adjusting the running speed of the direct current speed reducing motor 9 and the micro-arc oxidation power supply parameters.
According to the aviation packaging tray 2, only a local area in the micro-arc oxidation groove 4 is subjected to micro-arc oxidation reaction, namely, a large current output by a micro-arc oxidation power supply acts on the local area of the aviation packaging tray 2, so that the growth rate of a micro-arc oxidation film layer is remarkably improved, and the production efficiency of the aviation packaging tray oxidation film layer is remarkably improved.
The invention also relates to a preparation method of the aeronautical containerized tray oxide film layer, which is implemented by adopting the micro-arc oxidation device according to the following steps:
step 1, cleaning stains on the surface of an aviation container tray 2 by using a metal cleaning agent for later use;
wherein the metal cleaning agent is a JH-1251 phosphorus-free environment-friendly industrial cleaning agent;
Uniformly stirring solute a, solute b and water to obtain electrolyte, and adding the electrolyte into a solution storage tank 5;
wherein the solute a is any one of sodium silicate nonahydrate and sodium silicate pentahydrate; the solute b is any one of sodium phosphate, sodium dihydrogen phosphate, disodium hydrogen phosphate and sodium polyphosphate; the mass percent of the solute a is 0.4-0.5%, the mass percent of the solute b is 3.0-3.5%, and the balance is water;
wherein, the parameters of the micro-arc oxidation power supply 8 are as follows: the micro-arc oxidation voltage is 620V, the frequency is 500Hz, and the duty ratio is 15-25%; the output pressure of the air compressor 7 is 1-1.5 MPa; the rising speed of the direct current speed reducing motor 9 is 0.1 mm/s-0.2 mm/s.
Example 1
The preparation method of the aviation packaging tray oxide film layer is implemented according to the following steps:
step 1, cleaning stains on the surface of an aviation container tray 2 by using a metal cleaning agent for later use, wherein the size specification of the aviation container tray 2 is 2600mm multiplied by 2100mm multiplied by 2 mm;
wherein the metal cleaning agent is a JH-1251 phosphorus-free environment-friendly industrial cleaning agent;
Uniformly stirring sodium pentahydrate, sodium dihydrogen phosphate and water to obtain an electrolyte, and adding the electrolyte into a solution storage tank 5;
wherein the mass percent of the sodium pentahydrate is 0.45 percent, the mass percent of the sodium dihydrogen phosphate is 3.2 percent, and the balance is water;
wherein, the parameters of the micro-arc oxidation power supply 8 are as follows: the micro-arc oxidation voltage is 620V, the frequency is 500Hz, and the duty ratio is 15%; the output pressure of the air compressor 7 is 1.5 MPa; the rising rate of the DC gear motor 9 is 0.1 mm/s.
The prepared aviation packaging tray has the advantages that the color of the oxide film layer is uniform, no boundary line exists, the average thickness of the oxide film layer is 15.6 mu m, and the roughness is 1.36 mu m.
Example 2
The preparation method of the aviation packaging tray oxide film layer is implemented according to the following steps:
step 1, cleaning stains on the surface of an aviation container tray 2 by using a metal cleaning agent for later use, wherein the size specification of the aviation container tray 2 is 2600mm multiplied by 2100mm multiplied by 1.5 mm;
wherein the metal cleaning agent is a JH-1251 phosphorus-free environment-friendly industrial cleaning agent;
Uniformly stirring sodium silicate nonahydrate, sodium phosphate and water to obtain an electrolyte, and adding the electrolyte into a solution storage tank 5;
wherein the mass percent of the sodium silicate nonahydrate is 0.5 percent, the mass percent of the sodium phosphate is 3.0 percent, and the balance is water;
wherein, the parameters of the micro-arc oxidation power supply 8 are as follows: the micro-arc oxidation voltage is 620V, the frequency is 500Hz, and the duty ratio is 20%; the output pressure of the air compressor 7 is 1.2 MPa; the rising rate of the DC gear motor 9 is 0.2 mm/s.
The prepared aviation packaging tray has the advantages that the color of the oxide film layer is uniform, no boundary line exists, the average thickness of the oxide film layer is 25.8 mu m, and the roughness is 2.16 mu m.
Example 3
The preparation method of the aviation packaging tray oxide film layer is implemented according to the following steps:
step 1, cleaning stains on the surface of an aviation container tray 2 by using a metal cleaning agent for later use, wherein the size specification of the aviation container tray 2 is 2600mm multiplied by 2100mm multiplied by 2 mm;
wherein the metal cleaning agent is a JH-1251 phosphorus-free environment-friendly industrial cleaning agent;
Uniformly stirring sodium silicate nonahydrate, disodium hydrogen phosphate and water to obtain electrolyte, and adding the electrolyte into a solution storage tank 5;
wherein the mass percent of the sodium silicate nonahydrate is 0.4 percent, the mass percent of the disodium hydrogen phosphate is 3.2 percent, and the balance is water;
wherein, the parameters of the micro-arc oxidation power supply 8 are as follows: the micro-arc oxidation voltage is 620V, the frequency is 500Hz, and the duty ratio is 25%; the output pressure of the air compressor 7 is 1.2 MPa; the rising rate of the DC gear motor 9 is 0.15 mm/s.
The prepared aviation packaging tray has the advantages that the color of the oxide film layer is uniform, no boundary line exists, the average thickness of the oxide film layer is 35.4 mu m, and the roughness is 3.16 mu m.
Example 4
The preparation method of the aviation packaging tray oxide film layer is implemented according to the following steps:
step 1, cleaning stains on the surface of an aviation container tray 2 by using a metal cleaning agent for later use, wherein the size specification of the aviation container tray 2 is 2600mm multiplied by 2100mm multiplied by 2 mm;
wherein the metal cleaning agent is a JH-1251 phosphorus-free environment-friendly industrial cleaning agent;
Uniformly stirring sodium pentahydrate, sodium polyphosphate and water to obtain an electrolyte, and adding the electrolyte into a solution storage tank 5;
wherein the mass percent of the sodium pentahydrate is 0.5 percent, the mass percent of the sodium polyphosphate is 3.5 percent, and the balance is water;
wherein, the parameters of the micro-arc oxidation power supply 8 are as follows: the micro-arc oxidation voltage is 620V, the frequency is 500Hz, and the duty ratio is 20%; the output pressure of the air compressor 7 is 1.5 MPa; the rising rate of the DC gear motor 9 is 0.2 mm/s.
The prepared aviation packaging tray has the advantages that the color of the oxide film layer is uniform, no boundary line exists, the average thickness of the oxide film layer is 16.7 mu m, and the roughness is 1.42 mu m.
Example 5
The preparation method of the aviation packaging tray oxide film layer is implemented according to the following steps:
step 1, cleaning stains on the surface of an aviation container tray 2 by using a metal cleaning agent for later use, wherein the size specification of the aviation container tray 2 is 2600mm multiplied by 2100mm multiplied by 2 mm;
wherein the metal cleaning agent is a JH-1251 phosphorus-free environment-friendly industrial cleaning agent;
Uniformly stirring sodium pentahydrate, disodium hydrogen phosphate and water to obtain electrolyte, and adding the electrolyte into a solution storage tank 5;
wherein the mass percent of the sodium pentahydrate is 0.4 percent, the mass percent of the disodium hydrogen phosphate is 3.5 percent, and the balance is water;
wherein, the parameters of the micro-arc oxidation power supply 8 are as follows: the micro-arc oxidation voltage is 620V, the frequency is 500Hz, and the duty ratio is 25%; the output pressure of the air compressor 7 is 1 MPa; the rising rate of the DC gear motor 9 is 0.18 mm/s.
The prepared aviation packaging tray has the advantages that the color of the oxide film layer is uniform, no boundary line exists, the average thickness of the oxide film layer is 18.5 mu m, and the roughness is 1.53 mu m.
Claims (10)
1. The micro-arc oxidation device is characterized by comprising a micro-arc oxidation power supply (8), wherein the anode of the micro-arc oxidation power supply (8) is connected with an anode (1), the cathode of the micro-arc oxidation power supply (8) is connected with a cathode plate (3), the cathode plate (3) is fixedly connected with a micro-arc oxidation tank (4), the bottom of the micro-arc oxidation tank (4) is provided with an opening, an aviation packaging tray (2) is installed in the opening, the top of the aviation packaging tray (2) is fixedly connected to the bottom of the anode (1) through an aluminum screw, a solution storage tank (5) is arranged outside the micro-arc oxidation tank (4), electrolyte is stored in the solution storage tank (5), the micro-arc oxidation tank (4) is connected with a water outlet of a refrigerator (6) through a pipeline, the solution storage tank (5) is connected with a water inlet of the refrigerator (, the micro-arc oxidation tank (4) is connected with an air compressor (7) through a pipeline; the top rigid coupling of positive pole (1) has stainless steel to arrange (11), stainless steel is arranged (11) and is connected with direct current gear motor (9) through supporting component.
2. The micro-arc oxidation device according to claim 1, wherein the support assembly comprises at least two support frames (10), two fixed pulleys are oppositely arranged on the upper parts of the two support frames (10), a steel wire rope is wound on the two fixed pulleys, the steel wire rope is provided with at least three leading-out ends, the two leading-out ends are fixedly connected with two ends of the stainless steel row (11) respectively, and the third leading-out end is connected with the direct current speed reducing motor (9);
the stainless steel row (11) is fixedly connected with the top of the anode (1) through a nylon plate.
3. The micro-arc oxidation device according to claim 1, wherein angle steel is arranged on two opposite outer side surfaces of the micro-arc oxidation tank (4), the angle steel is close to the notch of the micro-arc oxidation tank, and the micro-arc oxidation tank (4) is clamped on the notch of the solution storage tank (5) through the angle steel.
4. The micro-arc oxidation device according to claim 1, wherein the body of the micro-arc oxidation tank (4) connected with the pipeline is provided with a ball valve; the body of the solution storage tank (5) connected with the pipeline is provided with a ball valve.
5. The micro-arc oxidation device according to claim 1, wherein the anode (1) is an aluminum bar or a copper bar, and the anode of the micro-arc oxidation power supply (8) is fixedly connected with the anode (1) through a copper wire.
6. The micro-arc oxidation device according to claim 1, wherein the negative electrode of the micro-arc oxidation power supply (8) is fixedly connected with the negative plate (3) through a copper wire;
the negative plate (3) comprises a copper bar, at least five stainless steel plates are uniformly arranged on the body of the copper bar, and the stainless steel plates are perpendicular to the copper bar and extend out of the copper bar; the stainless steel plate is fixedly connected on the inner wall of the micro-arc oxidation tank (4) through stainless steel screws.
7. The preparation method of the aeronautical packaging tray oxide film layer is characterized in that the micro-arc oxidation device according to any one of claims 1 to 6 is adopted, and the preparation method is implemented according to the following steps:
step 1, cleaning stains on the surface of an aviation container tray (2) by using a metal cleaning agent for later use;
step 2, installing the aviation containerization tray (2) in an opening of a micro-arc oxidation tank (4) and then connecting the aviation containerization tray with an anode (1);
step 3, preparing electrolyte
Uniformly stirring solute a, solute b and water to obtain electrolyte, and adding the electrolyte into a solution storage tank (5);
step 4, starting the refrigerator (6) and the air compressor (7), conveying the electrolyte to the micro-arc oxidation tank (4), and uniformly stirring; and starting a direct current speed reducing motor (9), lifting the aviation packaging tray (2) to a position not less than 2cm away from the liquid level of the electrolyte, setting parameters of a micro-arc oxidation power supply (8), and performing micro-arc oxidation on the aviation packaging tray (2) to obtain the aviation packaging tray oxidation film layer.
8. The method for preparing an air container tray oxide film layer according to claim 7, wherein the solute a is any one of sodium silicate nonahydrate and sodium silicate pentahydrate; the solute b is any one of sodium phosphate, sodium dihydrogen phosphate, disodium hydrogen phosphate and sodium polyphosphate; the mass percent of the solute a is 0.4-0.5%, the mass percent of the solute b is 3.0-3.5%, and the balance is water;
the metal cleaning agent is a JH-1251 phosphorus-free environment-friendly industrial cleaning agent.
9. The preparation method of the oxidation film layer of the air containerization tray of claim 7, wherein the parameters of the micro-arc oxidation power supply (8) are as follows: the micro-arc oxidation voltage is 620V, the frequency is 500Hz, and the duty ratio is 15-25%.
10. The preparation method of the air containerized tray oxide film layer of claim 7, wherein the output pressure of the air compressor (7) is 1-1.5 MPa; the rising speed of the direct current speed reducing motor (9) is 0.1 mm/s-0.2 mm/s.
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