CN113802164B - Aluminum alloy shell anodic oxidation and cathodic polarization tool - Google Patents
Aluminum alloy shell anodic oxidation and cathodic polarization tool Download PDFInfo
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- CN113802164B CN113802164B CN202111150384.1A CN202111150384A CN113802164B CN 113802164 B CN113802164 B CN 113802164B CN 202111150384 A CN202111150384 A CN 202111150384A CN 113802164 B CN113802164 B CN 113802164B
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 127
- 230000003647 oxidation Effects 0.000 title claims abstract description 86
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 86
- 230000010287 polarization Effects 0.000 title claims abstract description 41
- 238000012360 testing method Methods 0.000 claims description 23
- 238000007743 anodising Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- 239000004593 Epoxy Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 230000000712 assembly Effects 0.000 abstract description 5
- 238000000429 assembly Methods 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 description 9
- 238000001514 detection method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000005192 partition Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- C25D11/04—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
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/10—Electrodes, e.g. composition, counter electrode
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention discloses an anodic oxidation and cathodic polarization tool for an aluminum alloy shell. The tool comprises an anodic oxidation assembly and a plurality of cathodic polarization assemblies; the anode oxidation component comprises an anode rod connected with the anode of the power supply, an upper clamping plate and a lower clamping plate; the cathode polarization components are arranged on the upper clamping plate and distributed around the anode rods, each cathode polarization component comprises an insulating support plate, a cathode rod and a conductive wire, the cathode rods and the anode rods are arranged in parallel, hung on the insulating support plates and suspended outside the upper clamping plate, and the cathode rods are not in direct contact with the anodic oxidation components; one end of the conducting wire is connected with the upper end of the cathode rod, and the other end of the conducting wire is connected with the cathode of the power supply; the aluminum alloy shell is sleeved outside the anode rod and all the cathode rods and is clamped and positioned with the upper clamping plate and the lower clamping plate. The invention solves the problem of large quality difference of the oxide film layer on the inner wall surface and the outer wall surface of the aluminum alloy shell, and realizes uniform thickness and hardness of the oxide film layer on the inner wall surface and the outer wall surface of the shell.
Description
Technical Field
The invention belongs to the technical field of aluminum alloy oxidation tools, and particularly relates to an anodic oxidation and cathodic polarization tool for an aluminum alloy shell.
Background
The aluminum alloy is an alloy material widely applied in many fields, has the advantages of small density, high strength, good electrical and thermal conductivity, good processing technology, simple and convenient recovery and the like, but the aluminum alloy has low hardness and is easy to corrode, so the corrosion resistance, the wear resistance and the surface hardness of the aluminum alloy are improved by adopting anodic oxidation treatment. The anodic oxidation is an electrochemical oxidation process, the aluminum alloy part is used as an anode in corresponding electrolyte, electrolysis is carried out under the action of specific process conditions and impressed current, and finally an oxide film layer is formed on the surface of the aluminum alloy part. It is known that the quality of the oxide film layer directly determines various properties of the aluminum alloy part after the oxidation treatment. The quality of the oxide film layer includes two key indexes, namely film thickness and film hardness.
For aluminum alloy shell parts, although the conventional anodic oxidation process is mature, due to the reasons of small inner cavity space of the shell parts, slow electrolyte circulation, uneven current distribution and the like, the difference between the thickness and the hardness of the oxidation film layer on the inner wall surface and the outer wall surface of the shell is large, and uniform oxidation effect is difficult to achieve, so that the increasingly improved product performance requirements of the aluminum alloy shell parts cannot be met.
Disclosure of Invention
Aiming at the defects in the related art, the invention provides an anodic oxidation and cathodic polarization tool for an aluminum alloy shell, which is used for solving the problem of large quality difference of an oxidation film layer on the inner wall surface and the outer wall surface of the aluminum alloy shell and realizing uniform thickness and uniform hardness of the oxidation film layer on the inner wall surface and the outer wall surface of the shell.
The invention provides an anodic oxidation and cathodic polarization tool for an aluminum alloy shell, which is used for enabling the inner wall surface and the outer wall surface of the aluminum alloy shell to generate an oxide film layer and comprises the following components:
the anode oxidation assembly further comprises an anode rod, the middle part of the anode rod is provided with an upper clamping plate, the lower end of the anode rod is provided with a lower clamping plate, and the upper end of the anode rod is connected with a power supply anode;
a plurality of cathodically polarized components mounted on the upper card and arranged around the anode rods, each cathodically polarized component further comprising:
the insulating support plate is arranged on the upper surface of the upper clamping plate;
the cathode rod is arranged in parallel with the anode rod, the upper end of the cathode rod is hung on the upper surface of the insulating support plate, the lower end of the cathode rod penetrates through the insulating support plate and is suspended outside the upper clamping plate, and the cathode rod is not in direct contact with the anodic oxidation assembly;
one end of the conducting wire is connected with the upper end of the cathode bar, and the other end of the conducting wire is connected with the power supply cathode;
the aluminum alloy shell is sleeved outside the anode rod and all the cathode rods and is clamped and positioned with the upper clamping plate and the lower clamping plate.
According to the technical scheme, the cathode polarization assembly is arranged, so that the aluminum alloy shell synchronously carries out cathode polarization during conventional anodic oxidation, the problem that the quality difference of the oxidation film layers on the inner wall surface and the outer wall surface of the aluminum alloy shell is large is solved, and the thickness and the hardness of the oxidation film layers on the inner wall surface and the outer wall surface of the shell are uniform.
In some embodiments, the aluminum alloy shell anodizing and cathodopolarization tool further comprises a plurality of test pieces, wherein the test pieces are detachably connected to the inner wall and the outer wall of the aluminum alloy shell and are respectively positioned at the upper part, the middle part and the lower part of the aluminum alloy shell; the test piece is not in direct contact with the aluminum alloy shell and is used for indirectly judging the quality of the oxidation film layer generated on the inner wall surface and the outer wall surface of the aluminum alloy shell. According to the technical scheme, on the premise that the anodic oxidation effect of the aluminum alloy shell is not influenced, the quality of the oxidation film layer on the inner wall surface and the outer wall surface of the aluminum alloy shell is indirectly detected and judged by the arrangement of the test piece.
In some of these embodiments, the conductive wire further comprises an insulating tube, a cable wire, and a power plug; one end of the cable is wound on the upper end of the cathode bar, the other end of the cable is connected with a power plug, and the power plug is plugged in the power cathode; the upper end of the cathode rod is provided with a mounting flange used for wrapping a cable wire wound on the upper end of the cathode rod; the insulating pipe is sleeved outside the cable and the power plug and connected with the mounting flange. The technical scheme realizes the conductive connection and the safe setting of the cathode polarization component.
In some embodiments, each cathode polarization assembly further comprises a pin extending transversely through the cathode rod between the mounting flange and the insulating support plate, and the pin exposes two ends of the cathode rod to abut against the upper surface of the insulating support plate. This technical scheme has realized the axial positioning of cathode pole stick on the insulation support plate.
In some embodiments, each of the cathode polarization assemblies further includes a set of position-limiting members, each set of position-limiting members is mounted on the upper surface of the upper clamping plate and disposed on two opposite sides of the insulating support plate for limiting the rotation of the insulating support plate. This technical scheme has restricted the relative rotation between each cathodically polarized subassembly and the last cardboard through the setting of a set of locating part.
In some embodiments, the middle part of the anode rod is provided with a positioning step surface, and the positioning step surface is attached to the upper surface of the upper clamping plate; the lower end of the anode rod is provided with a nut component which is attached to the lower surface of the lower clamping plate; the clamping space between cardboard and the lower cardboard is used for restricting to fix a position step and nut component. According to the technical scheme, the positioning step and the nut assembly are arranged, so that the clamping space is adjusted and set, and the aluminum alloy shell is reliably clamped on the anodic oxidation assembly.
In some embodiments, the cathode rod is a hollow shaft structure, and the tube wall of the cathode rod is provided with a plurality of lightening holes. According to the technical scheme, the lightweight design of the cathode rod is realized through the arrangement of the hollow shaft structure and the lightening holes.
In some embodiments, the upper end of the anode rod is provided with a hook, and the hook is connected with the power supply anode. According to the technical scheme, the conductive connection of the anodic oxidation assembly is realized through the arrangement of the hooks.
In some embodiments, the upper end of the anode rod is provided with a lifting hook for lifting the aluminum alloy shell anodizing and cathodically polarizing tool and the aluminum alloy shell. According to the technical scheme, the whole tool and the whole aluminum alloy shell are lifted by crane through the lifting hook.
In some embodiments, the upper clamping plate and the lower clamping plate are made of aluminum alloy, and the insulating support plate is made of one of polytetrafluoroethylene material or epoxy phenolic glass cloth plate. According to the technical scheme, on the premise of ensuring the conductivity of the anodic oxidation assembly, the material selection of the insulating support plate ensures that the cathodic polarization assembly is not electrically connected with the anodic oxidation assembly.
Based on the technical scheme, the anodic oxidation and cathodic polarization tool for the aluminum alloy shell solves the problem that the difference of the quality of the oxidation film layers on the inner wall surface and the outer wall surface of the aluminum alloy shell is large, and the thickness and the hardness of the oxidation film layers on the inner wall surface and the outer wall surface of the shell are uniform.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a perspective view of an anodic oxidation and cathodic polarization tooling for an aluminum alloy shell according to the present invention;
FIG. 2 is a top view of the anodic oxidation and cathodic polarization tooling for aluminum alloy housings of the present invention;
FIG. 3 is a perspective view of a cathodic polarization assembly of the present invention;
FIG. 4 isbase:Sub>A sectional view A-A of FIG. 2;
FIG. 5 is a cross-sectional view B-B of FIG. 2;
FIG. 6 is a view taken along line C of FIG. 5;
fig. 7 is a structural sectional view of the aluminum alloy shell anodic oxidation and cathodic polarization tool of the present invention in an assembled state with the aluminum alloy shell.
In the figure:
1. an aluminum alloy housing; 11. a first reinforcing rib; 12. a second reinforcing rib; 13. a first separator; 14. a second separator; 2. an anodizing assembly; 21. an anode rod; 211. positioning a step surface; 22. an upper clamping plate; 23. a lower clamping plate; 24. a nut assembly; 25. hooking; 26. a hook; 3. a cathodically polarizing component; 31. an insulating support plate; 32. a cathode bar; 321. a mounting flange; 322. lightening holes; 33. a conductive wire; 331. an insulating tube; 332. a cable wire; 333. a power plug; 34. a pin shaft; 35. a limiting member; 4. a test piece.
Detailed Description
The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1, are only used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-4 and 7, the invention provides an anodic oxidation and cathodic polarization tool for an aluminum alloy shell, which is used for generating an oxide film layer on the inner wall and the outer wall of the aluminum alloy shell 1, and comprises an anodic oxidation assembly 2 and a plurality of cathodic polarization assemblies 3. Wherein,
the anodic oxidation assembly 2 further comprises an anode rod 21, an upper clamping plate 22 is arranged in the middle of the anode rod 21, a lower clamping plate 23 is arranged at the lower end of the anode rod 21, and the upper end of the anode rod 21 is connected with a power supply anode. It will be appreciated that the anode rod 21 is connected to the upper and lower straps 22, 23 at a central location to ensure a stable connection balance between each other. After the anode bar 21 is electrified, the aluminum alloy shell 1 is subjected to anodic oxidation, so that an oxide film layer is formed on the inner wall surface and the outer wall surface of the aluminum alloy shell 1.
A plurality of cathodically polarized components 3 are mounted on the upper card 22 and arranged around the anode rods 21. It can be understood that the plurality of cathode polarization components 3 are uniformly arranged on the periphery of the anode rod 21, that is, uniformly arranged relative to the inner wall of the aluminum alloy shell 1, so as to improve the conditions of slow circulation of electrolyte and non-uniform current distribution in the inner cavity of the aluminum alloy shell 1; by carrying out cathodic polarization while carrying out anodic oxidation on the aluminum alloy shell 1, the thickness and hardness of the oxidation film layer on the inner wall surface and the outer wall surface of the aluminum alloy shell 1 are consistent.
Further, each cathode polarization assembly 3 further includes an insulating support plate 31, a cathode rod 32, and a conductive wire 33. Insulating support plate 31 is installed on the upper surface of upper cardboard 22, and its one end and the upper surface fixed connection of upper cardboard 22, the other end is unsettled in the outside of upper cardboard 22. The cathode rods 32 and the anode rods 21 are arranged in parallel, the upper ends of the cathode rods 32 are hung on the upper surface of the insulating support plate 31, the lower ends of the cathode rods 32 penetrate through the insulating support plate 31 and are suspended outside the upper clamping plate 22, and the cathode rods 32 are not in direct contact with the anodic oxidation assembly 2; it is understood that the cathode rods 32 are hung from the free ends of the insulating support plates 31. One end of the conductive wire 33 is connected to the upper end of the cathode bar 32, and the other end is connected to the power supply cathode. After the cathode bar 32 is electrified, the cathode polarization is carried out on the aluminum alloy shell 1, so that the quality of the oxidation film layer of the aluminum alloy shell 1 is improved, and particularly the quality of the oxidation film layer on the inner wall of the aluminum alloy shell 1 is improved.
Further, the aluminum alloy casing 1 is sleeved outside the anode rod 21 and all the cathode rods 32, and is clamped and positioned with the upper clamping plate 22 and the lower clamping plate 23 of the anodic oxidation assembly 2. It can be understood that the inner cavity of the aluminum alloy shell 1 is provided with a clamping and positioning structure corresponding to the upper clamping plate 22 and the lower clamping plate 23; in this embodiment, the inner cavity of the aluminum alloy housing 1 is provided with a plurality of annular reinforcing ribs, the lower surface of the upper clamping plate 22 is attached and positioned to the upper surface of the first reinforcing rib 11, and the upper surface of the lower clamping plate 23 is attached and positioned to the lower surface of the second reinforcing rib 12; however, the invention is not limited to this, and those skilled in the art can flexibly set the clamping and positioning structure according to the actual structure of the inner cavity of the aluminum alloy shell 1, so that the aluminum alloy shell 1 is stably clamped on the anodic oxidation assembly 2.
According to the illustrative embodiment, the cathode polarization component 3 is arranged, so that the aluminum alloy shell 1 can synchronously carry out cathode polarization during conventional anodic oxidation, the problem that the quality difference of the oxidation film layers on the inner wall surface and the outer wall surface of the aluminum alloy shell 1 is large is solved, and the uniform thickness and hardness of the oxidation film layers on the inner wall surface and the outer wall surface of the shell are realized.
As shown in fig. 7, in some embodiments, the aluminum alloy housing anodizing and cathodically polarizing tool further includes a plurality of test strips 4, wherein the plurality of test strips 4 are detachably connected to the inner wall and the outer wall of the aluminum alloy housing 1 and are respectively located at the upper portion, the middle portion, and the lower portion of the aluminum alloy housing 1.
It should be noted that the wall surface of the aluminum alloy housing 1 itself has a plurality of threaded holes for connecting the aluminum alloy housing 1 with other parts; however, for the sake of clarity, not all of the threaded holes on the aluminum alloy housing 1 are fully shown in fig. 7. The technicians in the field can flexibly use the threaded hole of the aluminum alloy shell 1 to arrange the test pieces 4 at the upper, middle and lower relative positions of the inner and outer wall surfaces. Because the upper end and the lower end of the inner cavity of the aluminum alloy shell 1 in the embodiment are respectively provided with the first partition plate 13 and the second partition plate 14, the test pieces 4 are respectively arranged on the first partition plate 13 and the second partition plate 14; however, it should be understood that the invention is not limited thereto, and those skilled in the art can flexibly adjust the connection orientation of the test piece 4 according to the specific structure of the aluminum alloy housing 1 on the premise of fully determining the anodic oxidation effect of the aluminum alloy housing 1.
Furthermore, all test pieces 4 do not directly contact with the aluminum alloy housing 1, but are suspended outside or inside the aluminum alloy housing 1 and connected with the aluminum alloy housing 1 through screws. It can be understood that, during the anodic oxidation, other threaded holes on the aluminum alloy housing 1 which are not connected with the test piece 4 need to be sealed, including but not limited to screw plugging, so as to avoid the situation that the assembly of the aluminum alloy housing 1 and other parts is affected due to the size reduction of the threaded holes caused by the formation of the oxide film layer in the threaded holes.
Further, the test piece 4 is connected to the aluminum alloy shell 1 and is subjected to anodic oxidation simultaneously with the aluminum alloy shell 1; the quality of the oxide film layer formed on the inner wall surface and the outer wall surface of the test piece 4 after the anodic oxidation comprises the thickness and the hardness of the oxide film layer, so that the quality of the oxide film layer formed on the inner wall surface and the outer wall surface of the aluminum alloy shell 1 is indirectly judged. It can be understood that, through the arrangement of the test piece 4, the damage detection to the aluminum alloy shell 1 is avoided, and the convenience and the economy of the quality detection of the oxide film layer are realized.
According to the illustrative embodiment, on the premise that the anodic oxidation effect of the aluminum alloy shell 1 is not affected, the quality of the oxidation film layer on the inner wall surface and the outer wall surface of the aluminum alloy shell 1 is indirectly detected and judged by the arrangement of the test piece 4, and the detection difficulty and the detection cost are reduced.
As shown in fig. 3, 5, 6, in some embodiments, conductive wire 33 further comprises an insulating tube 331, a cable wire 332, and a power plug 333. Wherein, one end of the cable 332 is wound on the upper end of the cathode bar 32, the other end is connected with the power plug 333, and the power plug 333 is plugged in the power cathode; the upper end of the cathode bar 32 is provided with a mounting flange 321 for wrapping the cable 332 wound on the upper end of the cathode bar 32, so that the cable 332 is reliably connected with the cathode bar 32, and good conductivity is ensured; the insulating tube 331 is fitted around the cable 332 and the power plug 333, and is connected to the mounting flange 321, thereby ensuring safety of electrical conduction. This exemplary embodiment enables electrically conductive connection and safe arrangement of the cathodically polarized assembly 3.
As shown in fig. 1-3, 7, in some embodiments, each cathodically polarizing component 3 further comprises a pin 34; the pin 34 transversely penetrates through the cathode bar 32 between the mounting flange 321 and the insulating support plate 31, and both ends of the pin 34 exposed out of the cathode bar 32 are abutted against the upper surface of the insulating support plate 31. The exemplary embodiment achieves the axial assembly positioning of the cathode bar 32 on the insulating support plate 31 by the arrangement of the pin 34.
As shown in fig. 1-3 and 7, in some embodiments, each cathode polarization assembly 3 further includes a set of position-limiting members 35, and each set of position-limiting members 35 is mounted on the upper surface of the upper clamping plate 22 and disposed on two opposite sides of the insulating support plate 31 for limiting the rotation of the insulating support plate 31.
Specifically, the insulating support plate 31 in this embodiment is fixed to the upper chuck 22 by a bolt, and the rotation of the insulating support plate 31 is limited by a set of limiting members 35, so that the connecting position of the insulating support plate 31 with respect to the upper chuck 22 is fixed, and therefore, the connecting position of the cathodically polarized component 3 to the upper chuck 22 is stable and reliable, and the situation that the position of the cathodically polarized component 3 is changed during the assembly process of the tool and the aluminum alloy casing 1 or during the anodic oxidation process is avoided, the conductive wire 33 may interfere with the aluminum alloy casing 1 in a structure, or the cathode rod 32 may contact with the upper chuck 22 to cause a connecting phenomenon, or the cathode polarization effect may be affected, etc. It should be understood that the present invention is not limited to the rotation limiting manner of the limiting member 35 set on the insulating support plate 31 in the embodiment, and those skilled in the art can flexibly set the rotation limiting manner between the insulating support plate 31 and the upper clamping plate 22 according to practical situations and professional experience.
The above-mentioned exemplary embodiment limits the relative rotation between each cathodically polarized assembly 3 and the upper clamping plate 22 by the arrangement of a set of limiting members 35, and ensures the stable and reliable connection orientation of cathodically polarized assemblies 3 on the upper clamping plate 22.
As shown in fig. 4 and 7, in some embodiments, the middle of the anode rod 21 is provided with a positioning step surface 211, and the positioning step surface 211 is attached to the upper surface of the upper clamping plate 22; the lower end of the anode rod 21 is provided with a nut component 24, and the nut component 24 is attached to the lower surface of the lower clamping plate 23; the positioning step and nut assembly 24 serves to limit a clamping space between the upper clamp plate 22 and the lower clamp plate 23. According to the illustrative embodiment, the adjustment and setting of the clamping space are realized through the positioning steps and the nut assembly 24, so that the reliable clamping of the aluminum alloy shell 1 on the anodic oxidation assembly 2 is realized, and the detachability between the aluminum alloy shell 1 and the anodic oxidation assembly 2 is realized.
As shown in fig. 2-3, in some embodiments, the cathode rod 32 has a hollow shaft structure, and a plurality of weight-reducing holes 322 are formed in the wall of the hollow shaft structure. The exemplary embodiment reduces the weight of the cathode bar 32 by providing the hollow shaft structure and the lightening holes 322, and realizes a light weight design of the cathode bar 32.
As shown in fig. 1 and 7, in some embodiments, the anode rod 21 is provided with a hook 25 at an upper end thereof, and the hook 25 is connected to the anode of the power supply. Further, the hook 25 is directly hung on a pole bar of the oxidation tank, and the pole bar is connected with a power supply anode. After the circular telegram, the electricity is conducted on couple 25 through the pole thick stick, on conducting positive pole stick 21 again, continues to conduct last cardboard 22, lower cardboard 23 and aluminum alloy housing 1 on, realizes the anodic oxidation to aluminum alloy housing 1. In the present embodiment, the material of the hook 25 is copper in order to ensure good conductivity of the hook 25, but it should be understood that the present invention is not limited to this material. The illustrative embodiment achieves the conductive connection of the anodization assembly 2 through the provision of the hooks 25.
As shown in fig. 1 and 7, in some embodiments, the upper end of the anode rod 21 is provided with a hook 26 for lifting the aluminum alloy shell anodizing and cathodically polarizing tool and the aluminum alloy shell 1. It should be noted that, in order to ensure the lifting strength of the lifting hook 26, the material of the lifting hook 26 is steel in the embodiment, but it should be understood that the invention is not limited to this material. Further, by separately arranging the hook 25 and the hook 26, the abrasion of the hook 25 for conductive connection when being used as a hoisting device is reduced, the service life of the hook 25 is prolonged, and the tooling cost is reduced. The illustrative embodiment realizes the integral hoisting of the whole tool and the aluminum alloy shell 1 through the arrangement of the lifting hook 26.
In some embodiments, the material of the upper card 22 and the lower card 23 is aluminum alloy, and the material of the insulating support plate 31 is one of teflon material or epoxy novolac glass cloth plate. The exemplary embodiment ensures that no electrical connection occurs between the cathode bar 32 and the anodizing assembly 2 by the material selection of the insulating support plate 31 while ensuring the electrical conductivity of the anodizing assembly 2.
Furthermore, the material of the pin shaft 34, the insulating tube 331 and the limiting member 35 in the cathode polarization component 3 is also one of polytetrafluoroethylene material or epoxy phenolic glass cloth plate, so as to avoid the electric leakage or short circuit of the tool in the use process, and further ensure that the cathode rod 32 is not electrically connected with the anodic oxidation component 2.
The use steps of the anodic oxidation and cathodic polarization tool for the aluminum alloy shell are briefly described as follows by combining the drawings of 1-7:
1) Assembling the tool:
firstly, assembling the anodic oxidation assembly 2; secondly, assembling the cathode polarization component 3; then assembling a plurality of cathodically polarized assemblies 3 onto the anodized assembly 2;
it should be noted that, when the anodic oxidation assembly 2 is assembled, according to the theoretical spacing of the clamping and positioning structure of the inner cavity of the aluminum alloy shell 1, the distance between the upper clamping plate 22 and the lower clamping plate 23 is preliminarily set by using the nut assembly 24, and the distance needs to be larger than the theoretical spacing of the clamping and positioning structure of the inner cavity of the aluminum alloy shell 1;
2) Assembling the tool and the aluminum alloy shell 1:
installing test pieces 4 on the inner wall surface and the outer wall surface of an aluminum alloy shell 1, then inclining or flatly placing the aluminum alloy shell 1, installing an anodic oxidation and cathodic polarization tool of the aluminum alloy shell into the inner cavity of the aluminum alloy shell 1 in a tilting posture, enabling the lower surface of an upper clamping plate 22 to be close to the upper surface of a first reinforcing rib 11 and the upper surface of a lower clamping plate 23 to be close to the lower surface of a second reinforcing rib 12, and screwing a nut assembly 24 to enable the lower surface of the upper clamping plate 22 to be attached and positioned with the upper surface of the first reinforcing rib 11 and the upper surface of the lower clamping plate 23 to be attached and positioned with the lower surface of the second reinforcing rib 12;
3) Anodic oxidation:
the whole tool and the aluminum alloy shell 1 are integrally lifted by using a lifting hook 26 to an oxidation tank, a hook 25 is hung on a pole bar of the oxidation tank, the pole bar is connected with a power supply anode, a power supply plug 333 of a cathode polarization assembly 3 is inserted into a power supply cathode, and then the power supply is electrified, so that the aluminum alloy shell 1 is synchronously subjected to cathode polarization during conventional anodic oxidation;
4) After the anodic oxidation is finished, the power is cut off, the whole tool and the aluminum alloy shell 1 are taken out from the oxidation tank, the aluminum alloy shell 1 is taken out from the tool, then a plurality of test blocks 4 connected with the inner wall surface and the outer wall surface of the aluminum alloy shell 1 are taken down, the quality of the oxidation film layer on the inner wall surface and the outer wall surface of each test block 4 is detected, including the thickness and the hardness of the oxidation film layer, and the quality of the oxidation film layer on the inner wall surface and the outer wall surface of the aluminum alloy shell 1 is indirectly judged.
Through the description of the multiple embodiments of the anodic oxidation and cathodic polarization tool for the aluminum alloy shell, at least one or more of the following advantages can be obtained:
1. according to the invention, the cathode polarization component 3 is arranged, so that the aluminum alloy shell 1 can synchronously carry out cathode polarization during conventional anodic oxidation, the problem that the quality difference of the oxidation film layers on the inner wall surface and the outer wall surface of the aluminum alloy shell 1 is large is solved, and the thickness and the hardness of the oxidation film layers on the inner wall surface and the outer wall surface of the shell are uniform;
2. according to the invention, on the premise of not influencing the anodic oxidation effect of the aluminum alloy shell 1, the quality of the oxidation film layer on the inner wall surface and the outer wall surface of the aluminum alloy shell 1 is indirectly detected and judged by arranging the test piece 4, and the detection difficulty and the detection cost are reduced.
Finally, it should be noted that: in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications of the embodiments of the invention or equivalent substitutions for parts of the technical features are possible; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides an aluminum alloy shell anodic oxidation frock for make the interior outer wall surface of aluminum alloy shell generate the oxidation film layer, its characterized in that includes:
the anode oxidation assembly further comprises an anode rod, an upper clamping plate is arranged in the middle of the anode rod, a lower clamping plate is arranged at the lower end of the anode rod, and the upper end of the anode rod is connected with a power supply anode;
a plurality of cathodically polarized components mounted on the upper card and disposed around the anode rods, each cathodically polarized component further comprising:
the insulating support plate is arranged on the upper surface of the upper clamping plate;
the cathode rods are arranged in parallel with the anode rods, the upper ends of the cathode rods are hung on the upper surface of the insulating support plate, the lower ends of the cathode rods penetrate through the insulating support plate and are suspended outside the upper clamping plate, and the cathode rods are not in direct contact with the anodic oxidation assembly;
one end of the conducting wire is connected with the upper end of the cathode rod, and the other end of the conducting wire is connected with a power supply cathode; the conducting wire further comprises an insulating tube, a cable wire and a power plug; one end of the cable is wound at the upper end of the cathode rod, the other end of the cable is connected with the power plug, and the power plug is plugged in the power cathode; the upper end of the cathode rod is provided with a mounting flange used for wrapping the cable arranged at the upper end of the cathode rod in a winding way; the insulating sleeve is sleeved outside the cable and the power plug and connected with the mounting flange;
the aluminum alloy shell is sleeved outside the anode rod and all the cathode rods and is clamped and positioned with the upper clamping plate and the lower clamping plate.
2. The aluminum alloy shell anodizing tool according to claim 1, further comprising a plurality of test pieces, wherein the test pieces are detachably connected to the inner wall and the outer wall of the aluminum alloy shell and are respectively located at the upper portion, the middle portion and the lower portion of the aluminum alloy shell; the test piece is not in direct contact with the aluminum alloy shell and is used for indirectly judging the quality of an oxidation film layer generated on the inner wall surface and the outer wall surface of the aluminum alloy shell.
3. The aluminum alloy shell anodizing tool of claim 1, wherein each cathode polarization assembly further comprises a pin shaft transversely penetrating through the cathode rod between the mounting flange and the insulating support plate, and the pin shafts are exposed out of two ends of the cathode rod and abut against the upper surface of the insulating support plate.
4. The aluminum alloy shell anodizing tool of claim 1, wherein each cathode polarization assembly further comprises a set of limiting members, and each set of limiting members is mounted on the upper surface of the upper clamping plate and arranged on two opposite sides of the insulating support plate for limiting the rotation of the insulating support plate.
5. The aluminum alloy shell anodizing tool of claim 1, wherein a positioning step surface is arranged in the middle of the anode rod and attached to the upper surface of the upper clamping plate; the lower end of the anode rod is provided with a nut component, and the nut component is attached to the lower surface of the lower clamping plate; the positioning step and the nut component are used for limiting a clamping space between the upper clamping plate and the lower clamping plate.
6. The aluminum alloy shell anodizing tool of claim 1, wherein the cathode bar is of a hollow shaft structure, and a plurality of lightening holes are formed in a tube wall of the cathode bar.
7. The aluminum alloy shell anodizing tool of claim 1, wherein a hook is mounted at the upper end of the anode rod and connected with the power supply anode.
8. The aluminum alloy shell anodizing tool of claim 1, wherein a lifting hook is mounted at the upper end of the anode rod and used for lifting the aluminum alloy shell anodizing tool and the aluminum alloy shell.
9. The aluminum alloy shell anodizing tool of claim 1, wherein the upper clamping plate and the lower clamping plate are made of aluminum alloy, and the insulating support plate is made of one of polytetrafluoroethylene material or epoxy phenolic glass cloth plate.
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| CN202111150384.1A CN113802164B (en) | 2021-09-29 | 2021-09-29 | Aluminum alloy shell anodic oxidation and cathodic polarization tool |
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| CN202111150384.1A CN113802164B (en) | 2021-09-29 | 2021-09-29 | Aluminum alloy shell anodic oxidation and cathodic polarization tool |
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| CN113802164B true CN113802164B (en) | 2023-02-28 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217284A (en) * | 2017-06-02 | 2017-09-29 | 中国航发南方工业有限公司 | Deep hole aluminum component Hard anode oxidation method and its deep hole aluminum component of making |
| CN107523851A (en) * | 2017-10-09 | 2017-12-29 | 辽宁忠旺集团有限公司 | A kind of hollow cylinder oxidized aluminum alloy electrolysis system |
| CN109402697A (en) * | 2018-11-27 | 2019-03-01 | 苏州铭德铝业有限公司 | A kind of oxidized aluminum alloy fixture |
| CN213086149U (en) * | 2020-07-10 | 2021-04-30 | 江西昌河航空工业有限公司 | Disk ring shape aluminum alloy part anodic oxidation frock |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5648660B2 (en) * | 2012-09-10 | 2015-01-07 | 株式会社デンソー | Method of anodizing aluminum |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217284A (en) * | 2017-06-02 | 2017-09-29 | 中国航发南方工业有限公司 | Deep hole aluminum component Hard anode oxidation method and its deep hole aluminum component of making |
| CN107523851A (en) * | 2017-10-09 | 2017-12-29 | 辽宁忠旺集团有限公司 | A kind of hollow cylinder oxidized aluminum alloy electrolysis system |
| CN109402697A (en) * | 2018-11-27 | 2019-03-01 | 苏州铭德铝业有限公司 | A kind of oxidized aluminum alloy fixture |
| CN213086149U (en) * | 2020-07-10 | 2021-04-30 | 江西昌河航空工业有限公司 | Disk ring shape aluminum alloy part anodic oxidation frock |
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| CN113802164A (en) | 2021-12-17 |
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