CN107254708A - The method of two sections of cloth holes of low voltage anode aluminum foil - Google Patents
The method of two sections of cloth holes of low voltage anode aluminum foil Download PDFInfo
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- CN107254708A CN107254708A CN201710486686.3A CN201710486686A CN107254708A CN 107254708 A CN107254708 A CN 107254708A CN 201710486686 A CN201710486686 A CN 201710486686A CN 107254708 A CN107254708 A CN 107254708A
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- cloth
- sections
- cloth hole
- low voltage
- alternating current
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/04—Etching of light metals
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/02—Local etching
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/20—Acidic compositions for etching aluminium or alloys thereof
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/02—Etching
- C25F3/14—Etching locally
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/055—Etched foil electrodes
Abstract
The present invention relates to a kind of method of two sections of cloth holes of low voltage anode aluminum foil.The method of two sections of cloth holes of deferred anode aluminium foil of the present invention, comprises the following steps：S1：Aluminium foil is placed in hydrochloric acid and sulfuric acid mixed solution A, applies alternating current and carries out surface cloth hole, obtain one section of cloth hole aluminium foil；S2：Obtained in S1 one section of cloth hole aluminium foil is placed in hydrochloric acid and sulfuric acid mixed solution B, applies alternating current and carries out supplement cloth hole；Wherein, the frequency of alternating current is less than the frequency of alternating current in step S2 in step S1.The method of the two sections of cloth holes of low voltage anode aluminum foil provided relative to prior art, the present invention, it is to avoid one time cloth hole is excessive, pass through two sections of cloth holes, improve the uniformity of cloth hole, it is ensured that follow-up corrosion gos deep into surface state unanimously, effectively improve the specific volume of given voltage section anode aluminium foil.
Description
Technical field
The present invention relates to the manufacture method of aluminium electrolutic capacitor anode aluminium foil, more particularly to a kind of low voltage anode aluminum foil
The method of two sections of cloth holes.
Background technology
Aluminium electrolutic capacitor is a kind of energy-storage travelling wave tube for being widely used in electronic enterprises, and anode aluminium foil is aluminium electroloysis
The important raw material of capacitor, the architectural characteristic of anode aluminium foil decides the electrical property of aluminium electrolutic capacitor.
The electrolytic corrosion process of low voltage anode aluminum foil is generally：Aluminium foil → pre-treatment → one-level cloth hole stage → multistage is deeply
Corrosion → cleaning dechlorination process → stabilization is handled → burns piece drying.The main function of pre-treatment be except deluster paper tinsel surface and oil contaminant,
Impurity and oxide-film, improve surface state, promote to form equally distributed point corrosion pit during aluminium foil next step cloth pitting corrosion；One-level cloth
The hole stage is by applying alternating current in initial pitting pit-hole of the aluminium foil surface formation with certain pore size；Deeply corrosion is multistage
Further be powered corrosion on the basis of initial point pit, makes to being corroded inside aluminium foil in this pit, due to alternating current
Positive-negative half-cycle effect, positive half cycle deeply corrodes, and negative half period aluminium hydroxide is heaped, and forms special sponge corrosion layer, obtains high
Specific volume；The main function of cleaning dechlorination post processing is then the metal impurities, paper tinsel ash and paper tinsel surface for eliminating aluminium foil surface residual
Chlorion；Stabilization processing is in order that product has certain water resistance to be maintained at before next procedure and do not become damp and rotten, and improves
Etched foil surface film oxide lifts certain specific volume.
The dislocation on aluminium foil light paper tinsel surface, be mingled with, crystal boundary, phase boundary, composition cluster, stress concentration, machinery scratch etc. defect exist
Initial corrosion hair engaging aperture is easily produced under general etching condition.Because by specific etch process parameters and aluminium foil surface state
Influence, the uneven phenomenon of corrosion hole size occurs in many practical microcosmic corrosion structures of low-voltage aluminium foil, cause production
There is the low defect of specific-volume anomaly, low intensity, specific volume in product, and the producer of high-end technology often obtains highest using minimum etching extent
The product of specific volume and intensity, accomplishes that this point requires pit size and is evenly distributed, and does not close hole and hollow place occurs, so leading portion
Cloth hole be the necessary condition for determining uniformity, not only want cloth to go out uniform hole, while the size to hole is also required, pit
Oversized, lower than surface utilisation to be directed at specific volume low.The too small then pit of current density is too small, easily causes multistage exchange rotten
The merging of aperture during erosion, is equally unfavorable for improving specific volume.Current all manufacturers are limited to all using the technology of one section of cloth hole
The intensity of pre-treatment and the defect of aluminium foil original surface, often cloth hole is not ideal enough.The even hole size of technique imperfection producer
Control that can not be quite reasonable.
The content of the invention
Based on this, it is an object of the present invention to provide a kind of method of two sections of cloth holes of low voltage anode aluminum foil, can effectively be controlled
The initial cloth hole of aluminium foil, not only can make cloth hole evenly, improve specific volume, can more pass through frequency, temperature, current control hole
Size, makes its aluminium electrolutic capacitor prepared reach different product performances, and some specific voltage sections are protruded according to demand,
Meet the production requirement of aluminium electrolutic capacitor diversification.
The present invention is achieved by the following technical solutions：
The method of two sections of cloth holes of low voltage anode aluminum foil, comprises the following steps：
S1：Aluminium foil is placed in hydrochloric solution A, applies alternating current and carry out surface cloth hole, obtain one section of cloth hole aluminium foil；
S2：Obtained in S1 one section of cloth hole aluminium foil is placed in hydrochloric solution B, applies alternating current and carries out supplement cloth
Hole；
Wherein, the frequency of alternating current is less than the frequency of alternating current in step S2 in step S1.
Further, the temperature of solution A is less than the temperature of solution B in the step S2 in the step S1.
Further, the cloth hole time in the step S2 is less than the cloth hole time in step S1.
Further, the frequency of the alternating current in the step S1 is 11-23Hz, the frequency of the alternating current in the step S2
Rate is 17-35Hz.
Further, the solution A and solution B are hydrochloric and sulfuric acid mixed solution.
Further, the temperature of the solution A is 30-45 DEG C, and the temperature of the solution B is 40-60 DEG C.
Further, the mass fraction of hydrochloric acid is 4-20% in the solution A and solution B, and the mass fraction of sulfuric acid is equal
For 0.01-0.5%.
Further, the ratio of the cloth hole time in the step S1 and the cloth hole time in step S2 are more than or equal to 2.
Further, the cloth hole time in the step S1 is 30-60s, and the cloth hole time in step S2 is 10-30s.
Further, the alternating current in the step S1 and step S2 is that current density is 0.3-0.7A/cm2Frequency conversion hand over
Stream electricity.
Relative to prior art, beneficial effects of the present invention are as follows：
(1) method for two sections of cloth holes of low voltage anode aluminum foil that the present invention is provided a, it is to avoid cloth hole excessively, passes through two sections of cloth
Hole, improves the density and dimensional homogeneity of cloth hole, it is ensured that follow-up corrosion gos deep into surface state unanimously, effectively improves anode aluminium foil
Specific volume；
(2) method of two sections of cloth holes of the invention, in the first stage during cloth hole, using relatively low frequency, relatively
Low cloth hole treatment temperature and relatively long cloth hole time, the suitable hole of cloth size, then in second stage cloth hole,
Using of a relatively high frequency, of a relatively high cloth hole treatment temperature and relatively short cloth hole time, high-temperature activation chlorine
The ability of ion, makes it have higher current potential and breaks up ability, so that the position of non-cloth hole in the first stage is carried out into supplement cloth
Hole；Also, second stage use higher frequency, formed more crypto set cloth hole frequency, can the thinner hole of cloth, be also prevented from
Grown in the first stage on the good hole of cloth, and ability is broken up with reference to its higher current potential, effectively supplemented cloth hole, fill up the first rank
Blank between Duan great Kong, realizes uniform cloth hole, it is to avoid specific volume drop caused by cloth hole oversized specific surface area utilization rate is low
Specific volume is reduced caused by merging during the undersized subsequent corrosion of low and cloth hole between aperture；
(3) by regulating and controlling the time of first stage and second stage cloth hole, extent of corrosion is adjusted, so as to adjust the big of cloth hole
Small and density；The cloth hole time that the cloth hole time of second stage compares the first stage is short, note the total etching extent of two sections of cloth holes with
Ensure that total etching extent of total etching extent after two sections of cloth holes and prior art is basically identical, it is to avoid excessive cloth hole；
(4) by the method for the invention, it can effectively control the cloth hole uniformity of aluminium foil and preferably control cloth hole
Density and hole size, effectively improve the specific volume of the anode aluminium foil of specific voltage section, and then obtain the low pressure with specific structure
Anode aluminium foil, makes aluminium electrolutic capacitor reach different product performances, meets the production requirement of aluminium electrolutic capacitor diversification；This
Outside, the method for present invention offer two sections of cloth holes of low voltage anode aluminum foil is easy to operate and realize.
In order to more fully understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Brief description of the drawings
The surface crystalline phase of anode aluminium foils of the Fig. 1 for the present invention after the bore distribution method cloth hole described in embodiment 1 and corrosion
500 times of figures of microscope；
The scanning electron of anode aluminium foils of the Fig. 2 for the present invention after the bore distribution method cloth hole described in embodiment 1 and corrosion
Microscopical 4000 times of figures；
The surface crystalline phase of anode aluminium foils of the Fig. 3 for the present invention after the bore distribution method cloth hole described in embodiment 2 and corrosion
500 times of figures of microscope；
The scanning electron of anode aluminium foils of the Fig. 4 for the present invention after the bore distribution method cloth hole described in embodiment 2 and corrosion
Microscopical 4000 times of figures；
The surface crystalline phase of anode aluminium foils of the Fig. 5 for the present invention after the bore distribution method cloth hole described in comparative example 1 and corrosion
500 times of figures of microscope；
The scanning electron of anode aluminium foils of the Fig. 6 for the present invention after the bore distribution method cloth hole described in comparative example 1 and corrosion
Microscopical 4000 times of figures.
Embodiment
The invention provides a kind of method of two sections of cloth holes of low voltage anode aluminum foil, comprise the following steps：
S1：Aluminium foil is placed in hydrochloric acid and sulfuric acid mixed solution A, applies alternating current and carries out surface cloth hole, obtain one section of cloth
Hole aluminium foil；
S2：Obtained in S1 one section of cloth hole aluminium foil is placed in hydrochloric acid and sulfuric acid mixed solution B, applies alternating current and is mended
Fill cloth hole；
Wherein, the frequency of alternating current is less than the frequency of alternating current in step S2 in step S1；Mix molten in the step S1
Liquid A temperature is less than the temperature of mixed solution B in the step S2；The cloth hole time in the step S2 is less than in step S1
The cloth hole time.
It is preferred that, the frequency of the alternating current in the step S1 is the frequency of the alternating current in 11-23Hz, the step S2
For 17-35Hz；The mass fraction of hydrochloric acid is 4-20% in the mixed solution A and mixed solution B, and the mass fraction of sulfuric acid is equal
For 0.01-0.5%, the temperature of the mixed solution A is 30-45 DEG C, and the temperature of the mixed solution B is 40-60 DEG C；The step
The ratio between cloth hole time in rapid S1 and the cloth hole time in step S2 are more than or equal to 2.Friendship in the step S1 and step S2
It is that current density is 0.3-0.7A/cm to flow electricity2Frequency-changing AC electricity.
Embodiment 1
The method of two sections of cloth holes of low voltage anode aluminum foil described in the present embodiment, comprises the following steps：
S1：Aluminium foil by pretreatment oil removing is placed in the hydrochloric acid and sulfuric acid mixed solution A that temperature is 40 DEG C, applies electricity
Current density is 0.3-0.7A/cm2, frequency f1Surface cloth hole, cloth hole time t are carried out for 25Hz alternating current1For 40 seconds, at cloth hole
After reason terminates, one section of cloth hole aluminium foil is obtained；
S2：Obtained in S1 one section of cloth hole aluminium foil is placed in the hydrochloric acid and sulfuric acid mixed solution B that temperature is 55 DEG C, applied
Current density is 0.3-0.7A/cm2, frequency f2Supplement cloth hole, cloth hole time t are carried out for 25Hz alternating current2For 20 seconds.
Embodiment 2
The method of two sections of cloth holes of low voltage anode aluminum foil described in the present embodiment, comprises the following steps：
S1：Aluminium foil by pretreatment oil removing is placed in the hydrochloric acid and sulfuric acid mixed solution A that temperature is 40 DEG C, applies electricity
Current density is 0.3-0.7A/cm2, frequency f1Surface cloth hole, cloth hole time t are carried out for 25Hz alternating current1For 40 seconds, at cloth hole
After reason terminates, one section of cloth hole aluminium foil is obtained；
S2：Obtained in S1 one section of cloth hole aluminium foil is placed in the hydrochloric acid and sulfuric acid mixed solution B that temperature is 55 DEG C, applied
Current density is 0.3-0.7A/cm2, frequency f2Supplement cloth hole, cloth hole time t are carried out for 35Hz alternating current2For 20 seconds.
Comparative example 1
Low voltage anode aluminum foil bore distribution method described in this comparative example, its step is：
Aluminium foil by pretreatment oil removing is placed in the hydrochloric acid and sulfuric acid mixed solution A that temperature is 40 DEG C, applies electric current
Density is 0.3-0.7A/cm2, frequency for 25Hz alternating current carry out surface cloth hole, the cloth hole time be 60 seconds.
Comparative example 2
The method of two sections of cloth holes of low voltage anode aluminum foil described in this comparative example, comprises the following steps：
S1：Aluminium foil by pretreatment oil removing is placed in the hydrochloric acid and sulfuric acid mixed solution A that temperature is 40 DEG C, applies electricity
Current density is 0.3-0.7A/cm2, frequency f1Surface cloth hole, cloth hole time t are carried out for 25Hz alternating current1For 30 seconds, at cloth hole
After reason terminates, one section of cloth hole aluminium foil is obtained；
S2：Obtained in S1 one section of cloth hole aluminium foil is placed in the hydrochloric acid and sulfuric acid mixed solution B that temperature is 55 DEG C, applied
Current density is 0.3-0.7A/cm2, frequency f2Supplement cloth hole, cloth hole time t are carried out for 25Hz alternating current2For 30 seconds.
Effect example
The aluminium foil handled in embodiments of the invention 1, embodiment 2 and comparative example by cloth hole is equally carried out to the expansion of back segment
Pitting corrosion (multistage frequency conversion corrosion) is handled, and the sample after corrosion is tested, its result is as follows：
Table different hole distribution method and parameter and its corresponding performance parameter
Wherein, the CV products refer to the product of the specific volume of aluminium foil and the arrival voltage of aluminium foil.
It was found from from upper table, embodiments herein 1 and embodiment 2 are because the method for employing two sections of cloth holes, exists first
The first stage suitable hole of cloth size, then solves the stage second, in a short time mends the position of non-cloth hole on aluminium foil
Hole so that surface cloth hole is evenly effective, thus, the aluminium foil that the bore distribution method of embodiment 1 and embodiment 2 is obtained is through excessive erosion
Afterwards, corresponding specific volume after the aluminium foil corrosion that its 10V and 18.4V specific volume is obtained higher than a bore distribution method of comparative example, more has
Help prepare the products such as the capacitor of more Large Copacity, widen the application of low voltage anode aluminum foil.And relative to described in embodiment 1
Two sections of cloth holes method, in two sections of bore distribution methods of embodiment 2, by controlling frequency, make specific voltage section 18.4V specific volume
Improve, higher frequency is employed in second stage, the density of cloth hole is improved, so that passing through the cloth hole side of embodiment 2
Low voltage anode aluminum foil prepared by method is higher in 10V and 18.4V specific volume, and because aperture is more, the corresponding specific volumes of its 50V are relative
The 50V of embodiment 1 specific volume is declined slightly.Also, it can be seen from comparative example 1 and comparative example 2 when the cloth hole of second stage
Between with the cloth hole time phase of first stage simultaneously as second stage cloth hole overlong time, said minuscule hole is too many, in subsequent corrosion
Stage has and hole phenomenon, causes specific volume to reduce.
Please refer to Fig. 1-Fig. 6, it is by after the method cloth hole described in embodiment 1, embodiment 2 and comparative example respectively
4000 times of figures of 500 times of figures of surface crystalline phase microscope and SEM through excessive erosion.It can be seen that by contrast
The aluminium foil after bore distribution method in example, after corrosion, surface distributed many hollow places, illustrates that surface corrosion is uneven, micro-
More black vertical bar shape is more obvious than the white euphotic belt on side on 500 times of figures of mirror, and hot spot is more, and clear portions are that hot spot is diluter
Area, illustrate that cloth hole is uneven.And by the method for two sections of cloth holes described in embodiments of the invention 1, by two sections of cloth holes
Aluminium foil after corrosion surface uniform and smooth, substantially no hollow place formed, also, do not occur in figure black line and bright line, explanation
Cloth hole is uniform；By the method for two sections of cloth holes described in embodiments of the invention 2, the aluminium foil by two sections of cloth holes is after corrosion
Also without there is hollow place and the uneven phenomenon of corrosion, the hole of the cloth hole is tiny and uniform.The embodiment of the present invention 1 and reality
The aperture for applying the cloth hole of the low voltage anode aluminum foil in example 2 is 5-20nm.
For comparative example 2, the front and rear two cloth hole time is identical, because the time of first paragraph reduces, its normal cloth hole
It is also not enough, extended with regard to directly carrying out supplement cloth hole, and supplementing cloth hole, cause its Small Holes excessive, two sections of cloth holes excessively, are led
The result of cause is that normal size hole is not enough, and Small Holes are excessive, the specific volume of global voltage section is all reduced.
Thus, the method for two sections of cloth holes of low voltage anode aluminum foil that the present invention is provided can effectively control the cloth hole of aluminium foil
Quantity, uniformity, and the size in finer control hole to a certain extent, effectively obtain the sun in different hole densities and aperture
Pole aluminium foil, improves the specific volume of low voltage anode aluminum foil, so as to obtain being applicable the anode aluminium foil of different voltage section products, by specific
Aluminium electrolutic capacitor is reached different product performances after voltage chemical conversion, meet the production requirement of aluminium electrolutic capacitor diversification.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.
Claims (10)
1. the method for two sections of cloth holes of low voltage anode aluminum foil, it is characterised in that：Comprise the following steps：
S1：Aluminium foil is placed in hydrochloric solution A, applies alternating current and carry out surface cloth hole, obtain one section of cloth hole aluminium foil；
S2：Obtained in S1 one section of cloth hole aluminium foil is placed in hydrochloric solution B, applies alternating current and carries out supplement cloth hole；
Wherein, the frequency of alternating current is less than the frequency of alternating current in step S2 in step S1.
2. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 1, it is characterised in that：It is molten in the step S1
Liquid A temperature is less than the temperature of solution B in the step S2.
3. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 1, it is characterised in that：In the step S2
The cloth hole time is less than the cloth hole time in step S1.
4. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 1, it is characterised in that：In the step S1
The frequency of alternating current is 11-23Hz, and the frequency of the alternating current in the step S2 is 17-35Hz.
5. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 1, it is characterised in that：The solution A and molten
Liquid B is hydrochloric and sulfuric acid mixed solution.
6. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 2, it is characterised in that：The temperature of the solution A
Spend for 30-45 DEG C, the temperature of the solution B is 40-60 DEG C.
7. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 5, it is characterised in that：The solution A and molten
The mass fraction of hydrochloric acid is 4-20% in liquid B, and the mass fraction of sulfuric acid is 0.01-0.5%.
8. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 3, it is characterised in that：In the step S1
The ratio of cloth hole time and the cloth hole time in step S2 are more than or equal to 2.
9. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 3, it is characterised in that：In the step S1
The cloth hole time is 20-60s, and the cloth hole time in step S2 is 10-30s.
10. the method for two sections of cloth holes of low voltage anode aluminum foil according to claim 1, it is characterised in that：The step S1 and
Alternating current in step S2 is that current density is 0.3-0.7A/cm2Frequency-changing AC electricity.
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|---|---|---|---|
| CN201710486686.3A CN107254708B (en) | 2017-06-23 | 2017-06-23 | The method of two sections of cloth holes of low voltage anode aluminum foil |
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| CN201710486686.3A CN107254708B (en) | 2017-06-23 | 2017-06-23 | The method of two sections of cloth holes of low voltage anode aluminum foil |
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| CN107254708B CN107254708B (en) | 2019-01-11 |
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Citations (8)
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|---|---|---|---|---|
| JPS5319151A (en) * | 1976-08-06 | 1978-02-22 | Nichicon Capacitor Ltd | Method of producing aluminum foils for electrolytic capacitors |
| JPH02189912A (en) * | 1989-01-18 | 1990-07-25 | Elna Co Ltd | Manufacture of aluminum foil for electrolytic capacitor |
| CN1292433A (en) * | 1999-06-25 | 2001-04-25 | 四川大学 | Low-pressure anode aluminium foil face-expanding erosion method |
| US20020092777A1 (en) * | 2000-11-29 | 2002-07-18 | Mitsuhisa Yoshimura | Method of manufacturing electrode foil for aluminum electrolytic capacitor and AC power supply unit |
| CN1598985A (en) * | 2004-08-20 | 2005-03-23 | 厦门大学 | Nano holing method on surface of low-voltage anode foil for aluminium electrolytic capacitor |
| CN101752095A (en) * | 2009-12-28 | 2010-06-23 | 广西贺州市桂东电子科技有限责任公司 | Method for etching holes by corroding aluminum foil |
| CN104715929A (en) * | 2013-12-15 | 2015-06-17 | 江苏荣生电子有限公司 | Middle-voltage and high-voltage electrode foil manufacturing method for DC and AC mixed power-up etching |
| CN105957717A (en) * | 2016-05-26 | 2016-09-21 | 乳源县立东电子科技有限公司 | Multi-stage multi-time pitting method for middle high voltage anode foil |
-
2017
- 2017-06-23 CN CN201710486686.3A patent/CN107254708B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319151A (en) * | 1976-08-06 | 1978-02-22 | Nichicon Capacitor Ltd | Method of producing aluminum foils for electrolytic capacitors |
| JPH02189912A (en) * | 1989-01-18 | 1990-07-25 | Elna Co Ltd | Manufacture of aluminum foil for electrolytic capacitor |
| CN1292433A (en) * | 1999-06-25 | 2001-04-25 | 四川大学 | Low-pressure anode aluminium foil face-expanding erosion method |
| CN1090687C (en) * | 1999-06-25 | 2002-09-11 | 四川大学 | Low-pressure anode aluminium foil face-expanding erosion method |
| US20020092777A1 (en) * | 2000-11-29 | 2002-07-18 | Mitsuhisa Yoshimura | Method of manufacturing electrode foil for aluminum electrolytic capacitor and AC power supply unit |
| CN1598985A (en) * | 2004-08-20 | 2005-03-23 | 厦门大学 | Nano holing method on surface of low-voltage anode foil for aluminium electrolytic capacitor |
| CN101752095A (en) * | 2009-12-28 | 2010-06-23 | 广西贺州市桂东电子科技有限责任公司 | Method for etching holes by corroding aluminum foil |
| CN104715929A (en) * | 2013-12-15 | 2015-06-17 | 江苏荣生电子有限公司 | Middle-voltage and high-voltage electrode foil manufacturing method for DC and AC mixed power-up etching |
| CN105957717A (en) * | 2016-05-26 | 2016-09-21 | 乳源县立东电子科技有限公司 | Multi-stage multi-time pitting method for middle high voltage anode foil |
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|---|---|
| CN107254708B (en) | 2019-01-11 |
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