CN207646329U - Ultrasound-magnetic field joint effect augmentation of heat transfer improves the device of Waste Acid From Hua Cheng Foil performance - Google Patents
Ultrasound-magnetic field joint effect augmentation of heat transfer improves the device of Waste Acid From Hua Cheng Foil performance Download PDFInfo
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- CN207646329U CN207646329U CN201721802569.5U CN201721802569U CN207646329U CN 207646329 U CN207646329 U CN 207646329U CN 201721802569 U CN201721802569 U CN 201721802569U CN 207646329 U CN207646329 U CN 207646329U
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Abstract
Ultrasonic magnetic field joint effect augmentation of heat transfer improves the device of Waste Acid From Hua Cheng Foil performance, belongs to electronic material technology field.Including etched foil, the conductive roller for supporting etched foil, driving roller, the electrolytic bath for being marked with forming liquid, forming liquid circulating pump, two electrode plates, flowmeter is set in the connecting pipe of forming liquid circulating-pump outlet；Each electrode plate is connected to by conducting wire on corresponding power supply respectively, and each electrode plate is suspended from naturally in the electrolytic bath；It includes driving roller in two slots that conductive roller, which includes the outer conductive roller of two slots, driving roller, and etched foil is supported to going out forming liquid by conductive roller, driving roller from entering forming liquid；DC electromagnet is set in electrolytic bath, and DC electromagnet is completely immersed in forming liquid, and etched foil passes through between electrode plate in forming liquid；Plate sound source is respectively set on the opposite madial wall of electrolytic bath two of which.The present apparatus achievees the purpose that improve Waste Acid From Hua Cheng Foil performance by introducing ultrasound and magnetic field joint effect.
Description
Technical field
The utility model belongs to electronic material technology field, and in particular to a kind of raising chemical conversion etched foil performance and ratio
The device of capacitance.
Background technology
Waste Acid From Hua Cheng Foil is the important source material for manufacturing high-pressure aluminum electrolytic capacitor, and surface has one layer to be used for capacitor dielectric
Dielectric oxide film.Usually use ammonium borate as forming liquid, wherein shown in the Forming Mechanism following equation of oxidation film：
The cell reaction of forming liquid：
Anode reaction：
Cathode reaction：
It can be electrolytically generated in forming liquid 、With, whereinIt migrates to cathode, is reduced into hydrogen, and
In forming liquidThe original oxidation film in etched foil surface is then passed through, Al is generated close to Al metal sides2O3Film.And in etched foil
Al3+It is then detached from aluminum metal, passes through original oxidation film to be moved to forming liquid side, with the O in forming liquid2-And OH-In conjunction with most end form
At forming liquid side Al2O3Film.
Chemical synthesis technology flow is generally：Uncoiling → pretreatment of corrosive attack foil → level-one chemical conversion → two level chemical conversion → passivation
Processing → cleaning → drying → Waste Acid From Hua Cheng Foil, purpose are exactly to form one layer of dielectric oxide film on etched foil surface and borrosion hole inner wall.
Chemical synthesis technology carries out in formation device, device needed for formation process include electrolytic bath, forming liquid, circulating pump, circulation pipe,
Flowmeter, electrode plate, circulating pump, conductive roller and driving roller, the endless form of the electrolytic bath in domestic production is universal at present
Forming liquid is sucked from the loop exit of chemical conversion trench bottom for circulating pump, from four upper angles of electrolytic bath after flowmeter controls flow
Cycle injection electrolytic bath.
There are certain defects in etched foil formation process for the endless form of existing formation device：（1）In formation process,
The H to play a leading role to etched foil formation process+、OH-And O2-Disturbance effect it is low, OH in forming liquid-、O2-To foil surface
Migration rate is small, is unfavorable for O2-Mass transfer enters the borrosion hole to gather on etched foil, hinders O2-With coming into full contact with for borrosion hole inner wall,
Lead to generationIn there are a large amount of Lacking oxygen, that is, generateFilm reduces Waste Acid From Hua Cheng Foil there are a large amount of defect
Performance.（2）Due to OH at each borrosion hole in etched foil surface-、O2-Uneven concentration causes at the borrosion hole of foil face, the OH in borrosion hole-With
Al3+、O2-Uneven with the reaction rate of Al, reaction heat effect otherness is larger, and leading to etched foil surface, Temperature Distribution is not everywhere
Uniformly, to generate hot-spot the phenomenon that, causes the compactness, homogeneity and specific volume that are melted into film to decline.
By taking 730 Vf chemical conversion conditions as an example, the specific volume of 120 μm of Waste Acid From Hua Cheng Foil is only 0.33-0.38 μ f/cm2 。
Utility model content
The utility model provides a kind of device of ultrasound-magnetic field joint effect augmentation of heat transfer raising Waste Acid From Hua Cheng Foil performance, purpose
Be to solve existing formation device poor circulation, forming liquid concentration and temperature distributing disproportionation cause to be melted into the Lacking oxygen of film compared with
More, the problems such as oxide thickness is inhomogenous, specific volume is small, high temperature service life is short.
The utility model includes etched foil, the conductive roller for supporting etched foil, driving roller, the chemical conversion for being marked with forming liquid
The import of slot, forming liquid circulating pump, two electrode plates, the forming liquid circulating pump is connected by pipeline and electrolytic bath outlet at bottom
It connects, the outlet connecting pipe road of the forming liquid circulating pump is sent to electrolytic bath overthe openings, in the connection of forming liquid circulating-pump outlet
Flowmeter is set on pipeline；Each electrode plate is connected to by conducting wire on corresponding power supply respectively, and each electrode plate is natural
It is suspended from the electrolytic bath；The conduction roller includes the outer conductive roller of two slots, the driving roller including being passed in two slots
Dynamic roller, the etched foil are supported to going out forming liquid by conductive roller, driving roller from entering forming liquid；In the electrolytic bath
Interior setting DC electromagnet, the DC electromagnet are completely immersed in forming liquid, the DC electromagnet be symmetrically arranged in
The both sides of electrode plate, the etched foil pass through between electrode plate in forming liquid；In the opposite inside of the electrolytic bath two of which
Plate sound source is respectively set on wall.
The utility model has the beneficial effects that：The present apparatus reaches raising chemical conversion by introducing ultrasound and magnetic field joint effect
The purpose of foil performance.Ultrasound has cavitation effect, and magnetic field can generate mangneto eddy current effect in a liquid, by ultrasonic wave and magnetic field
Combined peripheral processing techniques apply in the formation process of anodic attack foil, effectively electrolytic bath are made to be internalized into liquid
Temperature and concentration more uniformity, increase the disturbance of forming liquid, improve the circulation of forming liquid, reduce chemical conversion film
Al2O3In a large amount of Lacking oxygen, that is, reduce the Al of generation2O3Existing defect improves the homogeneity of oxide thickness, carries
The high specific capacitance of Waste Acid From Hua Cheng Foil and the performance of product.
A pair of DC electromagnet of the utility model is along the chemical conversion symmetrical placement of groove center, line direction and electric field
Direction is parallel；Iron core size, appearance and size, coil turn, the size of current flowed through and the electricity of a pair of of DC electromagnet
Stream flow direction is all identical.
DC electromagnet described in the utility model is made of corrosion-proof casing, iron core, induction coil, and the induction coil is around the home
In outside the iron core, the corrosion-proof casing sealed envelope is outside the iron core, induction coil, two electrodes of the induction coil
The corrosion-proof casing is stretched out at end respectively, and two electrode tips of the induction coil are connected to corresponding direct current by conducting wire respectively
Source.The DC electromagnet of this set protects iron core and coil by corrosion-proof casing, is accessed by two electrodes of DC electromagnet
Power supply forms magnetic field, optimizes the corrosion of etched foil.
Plate sound source described in the utility model is made of multiple ultrasonic oscillators, sealing plate body, the plate sound source covering chemical conversion
The opposite madial wall of slot two of which；Each ultrasonic oscillator is placed in the sealing plate body.It is multiple uniformly distributed by being arranged
Ultrasonic oscillator ensure that the coverage rate of ultrasonic wave and spend.
The utility model ultrasonic oscillator is arranged on the plate sound source working face, and each ultrasonic oscillator is evenly arranged.It is super
The contact surface of acoustic wave transducer and forming liquid is big, ensures ultrasonic effect.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the utility model；
Fig. 2 is the vertical view of Fig. 1；
Fig. 3 is the dimensional structure diagram of plate sound source in the utility model；
Fig. 4 is a dimensional view of plate sound source in the utility model；
Fig. 5 is the structural schematic diagram of DC electromagnet in the utility model；
Fig. 6 is the vertical view of DC electromagnet in the utility model；
Fig. 7 is the corrosion device structural schematic diagram of electrode foil in the prior art.
Specific implementation mode
As shown in Figure 1, 2, the device that joint effect augmentation of heat transfer in this ultrasound-magnetic field improves Waste Acid From Hua Cheng Foil performance includes etched foil
1, the conductive roller 2 of support etched foil 1, driving roller 10, the electrolytic bath 12 for being marked with forming liquid 11, forming liquid circulating pump 5, two
The import of electrode plate 8, forming liquid circulating pump 5 is connect by pipeline with 12 outlet at bottom of electrolytic bath, the outlet of forming liquid circulating pump 5
Connecting pipe 3 is sent to 12 overthe openings of electrolytic bath, and flowmeter 4 is arranged in the connecting pipe that forming liquid circulating pump 5 exports；Each electricity
Pole plate 8 is connected to by conducting wire on corresponding power supply respectively, and each electrode plate 8 is suspended from naturally in electrolytic bath 12；Conductive roller 2 includes
The outer conductive roller 2 of two slots, driving roller 10 include driving roller 10 in two slots, and etched foil 1 is from forming liquid is entered to going out chemical conversion
Liquid is supported by conductive roller 2, driving roller 10；DC electromagnet 7 is set in electrolytic bath 12, and DC electromagnet 7 is complete
It immerses in forming liquid 11, DC electromagnet 7 is symmetrically arranged in the both sides of electrode plate 8, and etched foil 1 passes through electric in forming liquid 11
Between pole plate 8；Plate sound source 9 is respectively set on the opposite madial wall of 12 two of which of electrolytic bath.
For above-mentioned a pair of DC electromagnet 7 along the symmetrical placement in 12 center of electrolytic bath, line direction is flat with direction of an electric field
Row, and be completely submerged in forming liquid；The iron core size of a pair of of DC electromagnet 7, appearance and size, coil turn, flow through
Size of current and current direction are all identical.
As shown in Figure 5,6, DC electromagnet 7 is made of corrosion-proof casing 13, iron core 14, induction coil 15, induction coil 15
It is wound on outside iron core 14,13 sealed envelope of corrosion-proof casing is outside iron core 14, induction coil 15, two electrode tips of induction coil 15
Corrosion-proof casing 13 is stretched out respectively, and two electrode tips of induction coil 15 are connected to corresponding DC power supply by conducting wire respectively.
As shown in Fig. 1,4,5, plate sound source 9 is made of multiple ultrasonic oscillators 6, sealing plate body 16, the covering chemical conversion of plate sound source 9
The opposite madial wall of 12 two of which of slot；Each ultrasonic oscillator 6 is placed in sealing plate body 16.Ultrasonic oscillator 6 is arranged in plate sound
On 9 working face of source, each ultrasonic oscillator 6 is evenly arranged.
This formation device achievees the purpose that improve Waste Acid From Hua Cheng Foil performance by introducing ultrasound and magnetic field joint effect.Ultrasound tool
There are cavitation effect, magnetic field that can generate mangneto eddy current effect in a liquid, at the combined auxiliary of ultrasonic wave and magnetic field
It manages in Technology application to the formation process of anodic attack foil, following effect can be generated to chemical conversion：（1）Ultrasound and magnetic field joint effect
It should be able to reduceDefect present in film.Ultrasonic microjet effect can strengthen the ion disturbing at nearly foil face, accelerate
OH in forming liquid-And O2-Migration to the inside of etched foil surface and borrosion hole, while the OH moved to foil face in forming liquid-And O2-
It can be by Lorentz force in cutting magnetic induction lineF LEffect, to drive the ion to make eddying motion in forming liquid（It is this existing
As for mangneto eddy current effect）, which can make OH-、O2-Vortex disturbance is generated in the laminar flow layer of nearly foil face, to improve
OH-、O2-Migration rate, i.e. ultrasound and the joint effect in magnetic field can further make O2-Chemical conversion reaction is participated in into borrosion hole, is subtracted
It is fewLacking oxygen present in film improves Waste Acid From Hua Cheng Foil performance.（2）Ultrasound and magnetic field joint effect being capable of augmentation of heat transfer.It is super
The turbulence effect that sound cavitation effect causes cavitation bubble to collapse generation in forming liquid can strengthen nearly foil face laminar flow layer forming liquid
Convection current is conducted heat, and hot-spot phenomenon is reduced；Meanwhile mangneto eddy current effect can strengthen the mutual biography of ion between each borrosion hole in foil face
Matter reduces the concentration difference of ion between each borrosion hole, makes OH at each borrosion hole-、O2-Concentration distribution evenly, it is each to improve etched foil surface
The homogeneity of anode reaction rate at borrosion hole, each borrosion hole reaction heat effect homogenization degree improves, and then reduces temperature between each pitting
Difference is spent, the generation of foil surface hot-spot phenomenon is reduced, to improve the homogeneity and capacitive property of chemical conversion film.
By taking 730 Vf chemical conversion conditions as an example, the capacity of the Waste Acid From Hua Cheng Foil of 120 μ m-thicks reaches 0.44-0.48 μ f/cm2。
Claims (5)
1. ultrasound-magnetic field joint effect augmentation of heat transfer improves the device of Waste Acid From Hua Cheng Foil performance, including etched foil, support etched foil are led
Electric roller, driving roller, the electrolytic bath for being marked with forming liquid, forming liquid circulating pump, two electrode plates, the forming liquid circulating pump
Import is connect by pipeline with electrolytic bath outlet at bottom, and the outlet connecting pipe road of the forming liquid circulating pump is sent to chemical conversion channel opening
Flowmeter is arranged in the connecting pipe of forming liquid circulating-pump outlet in top；Each electrode plate is connected to by conducting wire respectively
On corresponding power supply, each electrode plate is suspended from naturally in the electrolytic bath；The conduction roller includes the outer conductive rollers of two slots
Cylinder, the driving roller include driving roller in two slots, and the etched foil passes through conduction from entering forming liquid to forming liquid is gone out
Roller, driving roller support；It is characterized in that DC electromagnet is arranged in the electrolytic bath, the DC electromagnet soaks completely
Enter in forming liquid, the DC electromagnet is symmetrically arranged in the both sides of electrode plate, and the etched foil passes through electric in forming liquid
Between pole plate；Plate sound source is respectively set on the opposite madial wall of the electrolytic bath two of which.
2. ultrasound according to claim 1-magnetic field joint effect augmentation of heat transfer improves the device of Waste Acid From Hua Cheng Foil performance, feature
It is a pair of DC electromagnet along the chemical conversion symmetrical placement of groove center, line direction is parallel with direction of an electric field；It is described
The iron core size of a pair of of DC electromagnet, appearance and size, coil turn, the size of current flowed through and current direction it is all identical.
3. ultrasound according to claim 1-magnetic field joint effect augmentation of heat transfer improves the device of Waste Acid From Hua Cheng Foil performance, feature
It is that the DC electromagnet is made of corrosion-proof casing, iron core, induction coil, the induction coil is wound on outside the iron core,
For the corrosion-proof casing sealed envelope outside the iron core, induction coil, two electrode tips of the induction coil stretch out institute respectively
Corrosion-proof casing is stated, two electrode tips of the induction coil are connected to corresponding DC power supply by conducting wire respectively.
4. ultrasound according to claim 1-magnetic field joint effect augmentation of heat transfer improves the device of Waste Acid From Hua Cheng Foil performance, feature
It is that the plate sound source is made of multiple ultrasonic oscillators, sealing plate body, the plate sound source covering electrolytic bath two of which is opposite
Madial wall；Each ultrasonic oscillator is placed in the sealing plate body.
5. ultrasound according to claim 4-magnetic field joint effect augmentation of heat transfer improves the device of Waste Acid From Hua Cheng Foil performance, feature
It is that ultrasonic oscillator is arranged on the plate sound source working face, each ultrasonic oscillator is evenly arranged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721802569.5U CN207646329U (en) | 2017-12-21 | 2017-12-21 | Ultrasound-magnetic field joint effect augmentation of heat transfer improves the device of Waste Acid From Hua Cheng Foil performance |
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| CN201721802569.5U CN207646329U (en) | 2017-12-21 | 2017-12-21 | Ultrasound-magnetic field joint effect augmentation of heat transfer improves the device of Waste Acid From Hua Cheng Foil performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113186587A (en) * | 2021-04-02 | 2021-07-30 | 广西日凯电子科技有限公司 | Automatic regulation and control equipment and method for cathode foil formation voltage of aluminum electrolytic capacitor |
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2017
- 2017-12-21 CN CN201721802569.5U patent/CN207646329U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113186587A (en) * | 2021-04-02 | 2021-07-30 | 广西日凯电子科技有限公司 | Automatic regulation and control equipment and method for cathode foil formation voltage of aluminum electrolytic capacitor |
| CN113186587B (en) * | 2021-04-02 | 2023-06-13 | 广西日凯电子科技有限公司 | Automatic regulation and control equipment and method for cathode foil formation voltage of aluminum electrolytic capacitor |
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