CN104157457A - Aluminium electrolytic capacitor formed foil production device and production line thereof - Google Patents
Aluminium electrolytic capacitor formed foil production device and production line thereof Download PDFInfo
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- CN104157457A CN104157457A CN201410409310.9A CN201410409310A CN104157457A CN 104157457 A CN104157457 A CN 104157457A CN 201410409310 A CN201410409310 A CN 201410409310A CN 104157457 A CN104157457 A CN 104157457A
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Abstract
The invention discloses an aluminium electrolytic capacitor formed foil production device and a production line thereof. The production device is used for the formation of corrosion aluminium foils and comprises at least one pair of formation tanks carried with electrolyte, an aluminum foil transmission mechanism and an AC power source. Each formation tank comprises a plurality of electrodes which are parallel to each other and are vertically arranged at the tank bottoms of the corresponding formation tanks. The plurality of electrodes of each formation tank are in parallel connection and one connection point is led out. Two connection points of each pair of formation tanks are connected with the AC power source to enable each pair of formation tanks to become a pair of AC formation tanks. The aluminum foil transmission mechanism enables the corrosion aluminium foil to be formed to move between adjacent two electrodes in each formation tank. An aluminium electrolytic capacitor produced by the formed foils produced in the invention has super long storage life and service life. The invention further discloses the production line of the aluminium electrolytic capacitor formed foil production device.
Description
Technical field
The present invention relates to a kind of process units of aluminum electrolysis capacitor formed foil and there is the production line of this process units, relate in particular to the resistance to hydrability of a kind of height aluminum electrolysis capacitor formed foil process units and there is the production line of this process units.
Background technology
The production of aluminum electrolysis capacitor formed foil has had the history of nearly 70 years in the whole world, the core material of using as a kind of traditional electronic component, the source of its anodizing film is by using corrosive aluminum foil, using ammonium adipate (low voltage product) or ammonium sebacate, boric acid ammonium salt (high-voltage product) electrolyte as forming liquid, silicon controlled rectification power source or Switching Power Supply are as DC power supply, develop into now, its general low pressure process flow process is as follows:
Corrosive aluminum foil is repaired groove-high-temperature roasting baking oven-oxide-film through electrolytic bath 1-liquid feed groove 1-electrolytic bath 2-electrolytic bath 3-liquid feed groove 2-electrolytic bath 4-(electrolytic bath 5-liquid feed groove 3-electrolytic bath 6 etc.)-washed with de-ionized water groove-phosphoric acid solution depolarising treatment trough-washed with de-ionized water grooves-oxide-film and is repaired groove-oven dry-rolling-inspection-warehouse-in.
In above-mentioned technological process, because corrosive aluminum foil needs to clean with deionized water the impurity such as chloride ion in corrosion and processing procedure, so produced aqua oxidation rete in cleaning process after aluminium foil corrosion, in follow-up drying course, produce again thermal oxidation rete, carry out so change on aforementioned aqua oxidation film and heat oxide film basis, simultaneously because formation process is in aqueous electrolyte, under the condition of 85 degrees Celsius, carry out, so also can produce aqua oxidation film in formation process, therefore after changing into and substantially finishing, Waste Acid From Hua Cheng Foil also needs to immerse the phosphoric acid solution of 5%-10% concentration, 60-80 degree Celsius, (determining according to formation voltage) carries out " depolarising " and processes, namely allow aqua oxidation film and phosphatase reaction, produce water-fast phosphate compounds at the position that has aqua oxidation film, to improve the water-fast performance of closing of pellumina,
In above-mentioned technical process, aqua oxidation film and dense oxidation film are weave ins, formation voltage is lower, it is thinner that it changes into film, its thickness is lower than row with the aqua oxidation film that corrosive aluminum foil brings, and goes utmost point intractability also higher, and general phosphoric acid processing now goes the utmost point processing hydrated film can not be removed totally completely, so current chemical synthesis technology has played very large restriction for the useful life and the storage life that promote aluminium electrolytic capacitor.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of process units of aluminum electrolysis capacitor formed foil and there is the production line of this process units, it solves conventional aluminum electrolytic capacitor poor stability, low problem of life-span.
The present invention is achieved in that a kind of process units of aluminum electrolysis capacitor formed foil, and it is for corrosive aluminum foil is changed into, and this process units comprises that at least one pair of Sheng is loaded with the electrolytic bath of electrolyte, aluminium foil transport sector, alternating source; Each electrolytic bath comprises some electrodes, these some electrodes are parallel to each other and perpendicular to the bottom land of corresponding electrolytic bath, some electrodes in each electrolytic bath are connected in parallel and draw one of them tie point, two tie points that the every pair of electrolytic bath is drawn connect this alternating source makes every pair of electrolytic bath form a pair of alternating current electrolytic bath, and this corrosive aluminum foil that this aluminium foil transport sector changes into need is walked successively between adjacent two electrodes in each electrolytic bath.
As the further improvement of such scheme, required this corrosive aluminum foil changing in corresponding electrolytic bath, is W or V or 3V shape by this aluminium foil transport sector.
As the further improvement of such scheme, the distance between adjacent two electrodes is 7-10cm.
As the further improvement of such scheme, the alternating current frequency of this alternating source is at 20-50HZ.
As the further improvement of such scheme, this aluminium foil transport sector comprises at least one pair of live roller group, in each electrolytic bath, have a live roller group, each live roller group comprises some live rollers, and this corrosive aluminum foil that each live roller group changes into need is walked in corresponding electrolytic bath.
The present invention also provides a kind of production line of aluminum electrolysis capacitor formed foil, and it comprises that at least two as the process units of the aluminum electrolysis capacitor formed foil of above-mentioned any one description, and these at least two process unitss are composed in series this production line.
As the further improvement of such scheme, this production line also comprises DC power supply constant-voltage equipment, and this DC power supply constant-voltage equipment was used for the aluminium foil constant voltage 90-120 second after this process units alternating current changes into.
Further, this production line also comprises baking furnace, this baking furnace for by the aluminium foil through this DC power supply constant-voltage equipment constant voltage processing in 400-480 degree temperature roasting 90-120 second.
Further, this production line also comprises direct voltage processing unit, and this direct voltage processing unit is processed 2 minutes for the aluminium foil through this DC power supply constant-voltage equipment constant voltage processing is added to direct voltage through the electrolyte that contains phosphate cpd.
The present invention is owing to having adopted alternating current chemical synthesis technology, simultaneously by traditional electrolytic bath, go utmost point groove and feed groove to be integrated, in the whole process of boosting, the while is also in depolarising, the heat oxide film timely underproof aqua oxidation film and preceding working procedure being brought reject after the new dense oxidation film layer of regeneration, the oxide-film obtaining like this has very strong hydration-resisting ability, thereby the aluminium electrolytic capacitor that adopts this Waste Acid From Hua Cheng Foil to produce has also just had storage life and the useful life of overlength.
Brief description of the drawings
The structural representation of the process units of the aluminum electrolysis capacitor formed foil that Fig. 1 provides for preferred embodiments of the present invention.
Fig. 2 is the another kind of walking manner of corrosive aluminum foil in electrolytic bath in Fig. 1.
Fig. 3 is corrosive aluminum foil another walking manner in electrolytic bath in Fig. 1.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 1, the structural representation of the process units of its aluminum electrolysis capacitor formed foil providing for preferred embodiments of the present invention.This process units, for corrosive aluminum foil 1 is changed into, is produced aluminium electrolytic capacitor by Waste Acid From Hua Cheng Foil.
This process units comprises that at least one pair of Sheng is loaded with the electrolytic bath of electrolyte, aluminium foil transport sector, alternating source 25.In the present embodiment, the logarithm of electrolytic bath is illustrated as example taking a pair of, as a pair of electrolytic bath A, B in Fig. 1, certainly can also have paired electrolytic bath C, D in addition, electrolytic bath E, F etc.
Electrolytic bath A, B can adopt stainless steel or high-temperature resistance plastice material.Each electrolytic bath comprises some electrodes, and electrode is illustrated taking 5 as example in the present embodiment, as being numbered 4,5,6,7,8 five electrodes in electrolytic bath A, is numbered 9,10,11,12,13 5 electrodes in electrolytic bath B.Electrode is made by graphite material, 4,5,6,7,8 five electrodes, and 9,10,11,12,13 5 electrodes are parallel and perpendicular to the bottom land of corresponding electrolytic bath mutually.Thereby, to contain and be loaded with changing into cell body A and changing into cell body B for flooding corresponding five conductive electrodes of electrolyte, five conductive electrode parallel vertical are placed, and adjacent electrode spacing is preferably 7cm-10cm.This electrolyte can be ammonium adipate electrolyte or SA electrolyte, and as low pressure forming liquid adopts conventional ammonium adipate electrolyte, high pressure forming liquid adopts SA electrolyte.
Five electrodes in each electrolytic bath are connected in parallel and draw one of them tie point, and as electrolytic bath A draws tie point a, electrolytic bath B draws tie point b.Five electrodes in each electrolytic bath can adopt cable or copper bar parallel connection.
Two tie point a, the b that electrolytic bath is drawn connect the output of this alternating source 25, make every pair of electrolytic bath form a pair of alternating current electrolytic bath.The alternating current frequency of this alternating source 25 is at 20-50HZ.This corrosive aluminum foil 1 that this aluminium foil transport sector changes into need is walked successively between adjacent two electrodes in each electrolytic bath.Required this corrosive aluminum foil changing in corresponding electrolytic bath, is W (as shown in Figure 1) or V (as shown in Figure 2) or 3V (as shown in Figure 3) shape by this aluminium foil transport sector.
The corrosive aluminum foil 1 that described aluminium foil transport sector changes into need passes from top to bottom between electrolytic bath A is by 4,5 electrodes between two plate electrodes, then between 5,6 electrode two plate electrodes, pass from down to up, from between 6,7 electrodes, pass from top to bottom again, finally between 7,8 electrodes, pass from lower to upper again, can make the corrosive aluminum foil 1 that need change into be W (as shown in Figure 1) or V (as shown in Figure 2) or 3V (as shown in Figure 3) shape.Then the method same with electrolytic bath A is in proper order through electrolytic bath B.The five plate electrode parallel connections of electrolytic bath A are drawn to tie point a, the five plate electrode parallel connections of electrolytic bath B are drawn to tie point b, the electrode tip that the line end that alternating source 25 is exported is connected to electrolytic bath A is tie point a, the electrode tip that another line end that alternating source 25 is exported is connected to electrolytic bath B is tie point b, the electrolytic bath A connecting like this and electrolytic bath B have formed a pair of alternating current electrolytic bath combination, when they become separately formation system and go electrode systems, the other side's feed system each other, thereby process units of the present invention can be accomplished electrolytic bath, removing utmost point groove and feed groove is to be integrated.Cancel the feed system in traditional direct current chemical synthesis technology, every a pair of interchange electrolytic bath, it integrates electrolytic bath, removes utmost point groove and feed groove.
This aluminium foil transport sector comprises at least one pair of live roller group, has a live roller group in each electrolytic bath, and each live roller group comprises some live rollers, and this corrosive aluminum foil that each live roller group changes into need is walked in corresponding electrolytic bath.In the present embodiment, in electrolytic bath A, be numbered 15,16,17,18,19 5 live rollers, in electrolytic bath B, be numbered 20,21,22,23,24 5 live rollers.From put corrosive aluminum foil 1 that paper tinsel machine comes through the live roller 15 of electrolytic bath A toward descending, after live roller 16, cross from lower to upper live roller 17 down, backward upper through live roller 19 through live roller 18, toward after live roller 20 through changing into B groove down, up through live roller 22, then backward upper through live roller 23 downwards after live roller 21, through the backward later process direction of live roller 24.Corrosive aluminum foil 1 is in electrolytic bath A, B two grooves, and walking manner can be W type, can certainly be the capable and 3V type of V word, and when V word is capable, each live roller group needs 3 scroll wheels; When 3V type, each live roller group only needs 6 scroll wheels.
Process units of the present invention is owing to having adopted alternating current chemical synthesis technology, it is characterized in that in the whole process of boosting simultaneously also in depolarising, the heat oxide film timely underproof aqua oxidation film and preceding working procedure being brought reject after the new dense oxidation film layer of regeneration, the oxide-film obtaining like this has very strong hydration-resisting ability, thereby the aluminium electrolytic capacitor that adopts this Waste Acid From Hua Cheng Foil to produce has also just had storage life and the useful life of overlength.
The process units of high stable of the present invention, long life aluminum electrolytic capacitor Waste Acid From Hua Cheng Foil, its core apparatus is electrolytic bath position, its most crucial position is: this device adopts alternating source to put on electrolytic bath, makes to be changed into corrosive aluminum foil and changes under alternating current condition.
Adopt process units of the present invention, when alternating current was added to electrolytic bath A, B when upper, when electrolytic bath A is positive potential, electrolytic bath B is negative potential, now, electrolytic bath A changes into, and what electrolytic bath B carried out is " to remove the utmost point: reaction, electrolytic bath B is a feed groove for electrolytic bath A simultaneously.Otherwise when electrolytic bath A is during in negative potential, electrolytic bath B is in positive potential, now, electrolytic bath B changes into reaction, and electrolytic bath A sentences " removing the utmost point " state, and electrolytic bath A is the feed groove of electrolytic bath B.
Above-mentioned principle explanation, adopt output device of the present invention to change into and in the process of boosting, to carry out depolarising work at corrosive aluminum foil, make the compact aluminum oxide film changing into directly be created on the corrosive aluminum foil surface without hydration oxide-film and heat oxide film, thereby it is good to obtain memory property, the Waste Acid From Hua Cheng Foil that the various aluminium electrolytic capacitors of production of long service life are used.
In addition, can be composed in series a production line to enhance productivity by plural process units of the present invention, when multipair configuration, can 2 couple of each process units, 3 couples or 6 pairs of electrolytic baths be arranged in order into production line by the form of series connection.Alternation electrolytic bath post equipment is that direct current is repaired groove, high-temperature roasting furnace etc., identical with traditional equipment, configures according to technological requirement.This direct current is repaired groove can comprise DC power supply constant-voltage equipment and direct voltage processing unit, and this DC power supply constant-voltage equipment was used for the aluminium foil constant voltage 90-120 second after this process units alternating current changes into; This direct voltage processing unit is processed 2 minutes for the aluminium foil through this DC power supply constant-voltage equipment constant voltage processing is added to direct voltage through the electrolyte that contains phosphoric acid salt compound.This high-temperature roasting furnace for by aluminium foil in 400-480 degree temperature roasting 90-120 second, this aluminium foil can be the aluminium foil through this DC power supply constant-voltage equipment constant voltage processing, can be also the aluminium foil through this direct voltage processing unit processing.
In sum, the invention discloses the process units of a kind of high stable, long life aluminum electrolytic capacitor Waste Acid From Hua Cheng Foil and there is the production line of this process units.This process units comprises: contain the electrolytic bath A and the electrolytic bath B that are loaded with electrolyte; The each groove being immersed in described electrolytic bath A, B electrolyte contains five conductive electrodes, and five conductive electrode parallel vertical are placed, and electrode spacing is 7cm-10cm; Aluminium foil transport sector.The corrosive aluminum foil 1 that described aluminium foil transport sector changes into need passes from top to bottom between A groove is by 1,2 electrodes between two plate electrodes, then between 2,3 electrode two plate electrodes, pass from down to up, from between 3,4 electrodes, pass from top to bottom again, finally between 4,5 electrodes, pass from lower to upper again, make the corrosive aluminum foil 1 that need change into be W type shape.Then the method same with electrolytic bath A is in proper order through electrolytic bath B.5 plate electrodes of electrolytic bath A are connected in parallel, 5 plate electrodes of electrolytic bath B are connected in parallel, a line end of alternating source 25 outputs is connected to the electrode tip of electrolytic bath A, another line end of alternating source 25 outputs is connected to the electrode tip of electrolytic bath B.The electrolytic bath A connecting like this and electrolytic bath B have formed a pair of alternating current electrolytic bath combination, and when they become formation system separately, the other side's feed system is each other again electrode systems simultaneously.Changing into trough can have 2 pairs to 6 pairs such combinations to be linked to be a production line, to enhance productivity, is used for producing high stable, long life aluminum electrolytic capacitor Waste Acid From Hua Cheng Foil.
The production method of the process units of aluminum electrolysis capacitor formed foil comprises the following steps.
(1), starting this alternating source output alternating current carries out constant current and boosts and change into.Corrosive aluminum foil adopts alternating current constant current to boost and changes into, and forming liquid low pressure adopts conventional ammonium adipate electrolyte, and high pressure forming liquid adopts SA electrolyte.
(2), in every pair of electrolytic bath, when one of them electrolytic bath is during in alternating current anodal, the corrosive aluminum foil in corresponding slot starts to boost, and corrosive aluminum foil in another electrolytic bath is in negative pole state.When electrolytic bath A is during in alternating current anodal, the corrosive aluminum foil in electrolytic bath A starts to boost, and now, the corrosive aluminum foil in electrolytic bath B is in negative pole state (removing utmost point state).And when electrolytic bath B is in the time that alternating current is anodal, the corrosive aluminum foil of electrolytic bath B starts to boost, now, the corrosive aluminum foil in electrolytic bath A is in negative pole state (removing utmost point state).
The process of boosting is removed the utmost point simultaneously, and constant voltage process is also being removed the utmost point simultaneously, makes compact aluminum oxide film in the corrosive aluminum foil superficial growth without hydration pellumina, obtain the pellumina of hydration-resisting performance extra-heavy.
(3), in the time that the tank voltage of every pair of electrolytic bath reaches the formation voltage of technology controlling and process, every pair of electrolytic bath enter pressure constant state, electric current reduces gradually.In the time that the tank voltage of electrolytic bath A, B reaches the formation voltage of technology controlling and process, electrolytic bath A, B enter pressure constant state, and electric current reduces gradually, and when constant voltage, oxide-film is still in changing into and go the alternation process of the utmost point.In alternating current formation process, electrolytic bath A and B are a pair of, and electrolytic bath C and D are a pair of, and they are feed groove each other, have therefore saved between every two electrolytic baths of traditional formation device, must have the pattern of a feed groove.Electrolytic bath can be that A, B are a pair of, can be also A and B, C and D, the multipair electrolytic baths such as E and F.
(4), become enough hour when electric current, exchange and change into end.
(5), the aluminium foil of aforementioned alternating current after changing into enters DC constant voltage groove below and further repairs oxide-film defect, DC constant voltage 2-3 minutes.Particularly, the aluminium foil after alternating current changes into, also needs within 90-120 seconds, to make oxidation film layer more perfect through DC power supply constant voltage.
(6), after high-temperature roasting (450 degree about 90 seconds).Particularly, roasting 90-120 seconds in the baking furnace that also needs to spend through 400 degree-480 through above-mentioned (5) Waste Acid From Hua Cheng Foil after treatment.
(7), through the processing of phosphate electrolyte making alive.Particularly, step (6) afterwards Waste Acid From Hua Cheng Foil also need to add in the electrolyte through containing phosphoric acid salt compound direct voltage and process 2 minutes.
(8), rolling after 350 degree oven for drying, inspection.
Wherein, in step (1), (2), (3), corrosive aluminum foil 1 to be changed is led feed groove without traditional liquid and is arrived electrolytic bath again, but directly corrosive aluminum foil 1 is connected to electrolytic bath A and electrolytic bath B, and electrolytic bath C and electrolytic bath D etc. are by that analogy.
Above-mentioned technological process is compared with traditional handicraft, and the chemical synthesis technology before different is high-temperature roasting furnace has been overturned traditional handicraft and adopted DC power supply chemical synthesis technology, the constant current alternating current that the present invention adopts boost chemical synthesis technology and constant voltage alternating current chemical synthesis technology.When electrolytic bath A is during in positive potential, the aluminium foil of electrolytic bath A starts to boost, and the aluminium foil of electrolytic bath B is in negative potential, namely in counter voltage state, aqua oxidation film and heat oxide film that corrosive aluminum foil brings are peeled off, and meanwhile, electrolytic bath B has played the effect to electrolytic bath A feed.When electrolytic bath B is during in positive potential, electrolytic bath B aluminium foil starts to boost, and now the aluminium foil current potential of electrolytic bath A is for negative, and the aluminium foil of electrolytic bath A is in counter voltage state, electrolytic bath A aluminium foil enters process of depolarization, and electrolytic bath A has played feed effect for electrolytic bath B simultaneously.Electrolytic bath C and D groove below, it is the same that electrolytic bath E and F etc. change into principle, can have 4-8 electrolytic bath according to the production capacity of design.
Production method of the present invention is owing to having adopted alternating current chemical synthesis technology, in the whole process of boosting, the while is also in depolarising, the heat oxide film timely underproof aqua oxidation film and preceding working procedure being brought reject after the new dense oxidation film layer of regeneration, the oxide-film obtaining like this has very strong hydration-resisting ability, thereby the aluminium electrolytic capacitor that adopts this Waste Acid From Hua Cheng Foil to produce has also just had storage life and the useful life of overlength.Meanwhile, production method of the present invention, has cancelled traditional liquid feed groove, and each feed groove need consume 10-12 kilowatts of General Production Lines at least needs 2 feed grooves, within 1 year, within 250 days, calculates by producing, and every production line can be saved the electric energy of 12 ten thousand-14 ten thousand kilowatts.
Subsequent, we select following technique to carry out technique and compare test.
Comparing embodiment 1
Technical recipe and parameter.
Electrolyte: the deionized water solution of ammonium adipate 15%, 85 degrees Celsius.
Polarization treatment fluid and processing time: 5% 50 degrees Celsius of phosphoric acid deionized water solutions, 3 minutes.
Sintering temperature and time: 400 degrees Celsius, roasting time 2 minutes.
Boost current: each sample 20mA.
Test piece size: the corrosive aluminum foil that test area is 10X20mm, along corrosive aluminum foil clump to continuous sampling.
Scheme 1, DC boosting is to 2 minutes-cleaning of 20V-DC constant voltage 5 minutes-washed with de-ionized water-roasting-direct current 20V constant voltage test.
Scheme 2, DC boosting is to 2 minutes-cleaning of 2 minutes-roasting-direct current of 20V-DC constant voltage 5 minutes-washed with de-ionized water-depolarising processing-direct current 20V constant voltage 20V constant voltage test.
Scheme 3, AC boosting is to 2 minutes-cleaning of 2 minutes-roasting-direct current of 3 minutes-direct current of 18V-interchange 18V constant voltage 20V constant voltage 20V constant voltage test.
Scheme 4, AC boosting is to 2 minutes-cleaning of 2 minutes-roasting-direct current of 2 minutes-depolarising of 3 minutes-direct current of 18V-interchange 18V constant voltage 20V constant voltage processing-direct current 20V constant voltage 20V constant voltage test
Difference Detection capacitance amount, pressure rising time, hydration-resisting performance (hydration-resisting performance is divided into deionization poach 60 minutes, 120 minutes 360 minutes and 720 minutes) after the trial target of above-mentioned 4 schemes changes into and finishes.
Method of testing: capacitance is normal temperature (30 ± 2 degrees centigrade).
Pressure rising time: 85 degrees Celsius of electrolyte, every sample 1mA, starts the needed time to 20V from energising.
Oxide-film is withstand voltage: arrive the voltage while starting timing 3 minutes 20V from voltage.
Above-mentioned result of the test is listed in lower list 1.
Table 1
Can find out from upper watch test result,
Scheme 1 is because be that conventional direct current changes into sample in the time not doing " depolarising " processing, and hydration-resisting performance is substantially far from being.
The conventional direct current of scheme 2 changes into sample after depolarising is processed, and can in deionized water, boil 1 hour, is less than pressure rising time before hydration test, but processes after 2 hours, and pressure rising time is obviously elongated, and performance starts to worsen.
Scheme 3 adopts alternating current to change into, and its sample, is still less than before test after 6 hours at hydration test pressure rising time, but after experiment 12 hours, is obviously greater than the time before test pressure rising time.
Scheme 4 is the technique that adopts alternating current to change into and go utmost point processing to combine, and its hydration-resisting was tested after 12 hours, was still less than greatly the pressure rising time before test.
Comparing embodiment 2
Relatively the alternating current of different frequency changes into the impact on anti-hydration, concrete test recipe and experimental condition, method of testing and as same in comparing embodiment 1, and test technology flow process is as the sample in No. 4 schemes in row 1.
AC boosting is to 2 minutes-cleaning of 2 minutes-roasting-direct current of 2 minutes-depolarising of 3 minutes-direct current of 18V-interchange 18V constant voltage 20V constant voltage processing-direct current 20V constant voltage 20V constant voltage test.
Alternating current adopts No. 1 sample 20HZ, No. 2 sample 25HZ, No. 3 sample 30HZ.4 sample 35HZ.No. 5 sample 40HZ, No. 6 sample 45HZ, No. 7 sample 50HZ.
The result of the test of 7 samples is listed in table 2
Above-mentioned test explanation, when the frequency of alternating current during to 50HZ, can obtain the superpower Waste Acid From Hua Cheng Foil of hydration-resisting performance at 30HZ, when alternating current is during in 35-40HZ scope, the oxide-film hydration-resisting ability obtaining after changing into is the strongest.
Production method according to traditional: to change on its surface the electrode foil obtaining through changing into after high pure electronic aluminium foil corrosion, be used as anode or the negative electrode of producing aluminium electrolytic capacitor.Because pellumina has logical interchange, the character of stopping direct current, all adopt for a long time DC power supply chemical synthesis technology both at home and abroad, in starting to generate fine and close pellumina on heat oxide film surface in the defect of this chemical synthesis technology aqua oxidation film and drying course that to be corrosive aluminum foil produce in corroding cleaning process early stage, electrode is in aqueous electrolyte, in the situation of 85 degrees Celsius, change into when producing fine and close pellumina, also produced aqua oxidation film, for the anti-hydration pellumina obtaining, in formation process, also need to increase by one phosphoric acid " depolarising " operation, object is to adopt phosphoric acid and hydrated alumina film to change into the water-insoluble matter of aluminum phosphate structure, improved afterwards the characteristic of pellumina through pyrolytic conversion, due to whole process be hydrated alumina film and compact aluminum oxide film interweave state generate, go the utmost point process can not be complete aqua oxidation film total overall reaction, so the Waste Acid From Hua Cheng Foil obtaining does not often reach perfect condition in hydration-resisting performance.(these are process programs, and I feel not want, otherwise 2 patent contents are identical, there is no characteristic separately)
The present invention adopts contrary conventional scheme, utilizes alternating current to change into production, utilizes alternating current, when electrode is during in forward " changing into ", form compact aluminum oxide film, sentence when reverse at electrode, in " removing the utmost point " state, peel off hydrated alumina film, like this, not only in the process of boosting, constantly carry out " changing into " and " removing the utmost point " process, in constant voltage process also in " changing into " and " removing the utmost point " process, what obtain like this changes into electrode, and its hydration-resisting performance is improved greatly.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a process units for aluminum electrolysis capacitor formed foil, it changes into for corrosive aluminum foil, it is characterized in that: it comprises that at least one pair of Sheng is loaded with the electrolytic bath of electrolyte, aluminium foil transport sector, alternating source; Each electrolytic bath comprises some electrodes, these some electrodes are parallel to each other and perpendicular to the bottom land of corresponding electrolytic bath, some electrodes in each electrolytic bath are connected in parallel and draw one of them tie point, two tie points that the every pair of electrolytic bath is drawn connect the output of this alternating source, make every pair of electrolytic bath form a pair of alternating current electrolytic bath, this corrosive aluminum foil that this aluminium foil transport sector changes into need is walked successively between adjacent two electrodes in each electrolytic bath.
Aluminum electrolysis capacitor formed foil according to claim 1 process units, it is characterized in that battery lead plate Mining graphite electrode, electrode in each groove adopts cable or copper bar to be connected in parallel, and two identical grooves partner, and each being connected in parallel is a little connected with the output of alternating source.
3. the process units of aluminum electrolysis capacitor formed foil according to claim 1, is characterized in that: required this corrosive aluminum foil changing in corresponding electrolytic bath, is W or V or the walking of 3V shape by this aluminium foil transport sector.
4. the process units of aluminum electrolysis capacitor formed foil according to claim 1, is characterized in that: the distance between adjacent two electrodes is 7-10cm.
5. the process units of aluminum electrolysis capacitor formed foil according to claim 1, is characterized in that: the alternating current frequency of this alternating source is at 20-50HZ.
6. the process units of aluminum electrolysis capacitor formed foil according to claim 1, it is characterized in that: this aluminium foil transport sector comprises at least one pair of live roller group, in each electrolytic bath, there is a live roller group, each live roller group comprises as dry live roller, and this corrosive aluminum foil that each live roller group changes into need is walked in corresponding electrolytic bath.
7. a production line for aluminum electrolysis capacitor formed foil, is characterized in that: it comprises the process units of at least two aluminum electrolysis capacitor formed foils as described in any one in claim 1-6, and these at least two process unitss are composed in series this production line.
8. the production line of aluminum electrolysis capacitor formed foil according to claim 7, it is characterized in that: this production line also comprises DC power supply constant-voltage equipment, this DC power supply constant-voltage equipment was used for the aluminium foil constant voltage 90-120 second after this process units alternating current changes into.
9. the production line of aluminum electrolysis capacitor formed foil according to claim 8, is characterized in that: this production line also comprises baking furnace, this baking furnace for by the aluminium foil through this DC power supply constant-voltage equipment constant voltage processing in 400-480 degree temperature roasting 90-120 second.
10. the production line of aluminum electrolysis capacitor formed foil according to claim 8, it is characterized in that: this production line also comprises direct voltage processing unit, this direct voltage processing unit is processed 2 minutes for the aluminium foil through this DC power supply constant-voltage equipment constant voltage processing is added to direct voltage through the electrolyte that contains phosphate cpd.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106245086A (en) * | 2016-08-31 | 2016-12-21 | 四川石棉华瑞电子有限公司 | Two grades of formation systems of aluminium foil and method |
| CN112490007A (en) * | 2020-12-14 | 2021-03-12 | 新疆金泰新材料技术有限公司 | Multi-stage oxidation treatment process for capacitor formation foil of 5G signal transmitter and production line thereof |
| CN114540908A (en) * | 2022-03-03 | 2022-05-27 | 南通海星电子股份有限公司 | Formation treatment method of high-quality low-voltage anode foil |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245086A (en) * | 2016-08-31 | 2016-12-21 | 四川石棉华瑞电子有限公司 | Two grades of formation systems of aluminium foil and method |
| CN106245086B (en) * | 2016-08-31 | 2019-03-01 | 四川石棉华瑞电子有限公司 | Aluminium foil second level formation system and method |
| CN112490007A (en) * | 2020-12-14 | 2021-03-12 | 新疆金泰新材料技术有限公司 | Multi-stage oxidation treatment process for capacitor formation foil of 5G signal transmitter and production line thereof |
| CN112490007B (en) * | 2020-12-14 | 2021-09-24 | 新疆金泰新材料技术有限公司 | Multi-stage oxidation treatment process for capacitor formation foil of 5G signal transmitter and production line thereof |
| CN114540908A (en) * | 2022-03-03 | 2022-05-27 | 南通海星电子股份有限公司 | Formation treatment method of high-quality low-voltage anode foil |
| CN114540908B (en) * | 2022-03-03 | 2024-02-02 | 南通海星电子股份有限公司 | Formation treatment method of high-quality low-voltage anode foil |
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