CN204102723U - A kind of process units of aluminum electrolysis capacitor formed foil and production line thereof - Google Patents
A kind of process units of aluminum electrolysis capacitor formed foil and production line thereof Download PDFInfo
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- CN204102723U CN204102723U CN201420469612.0U CN201420469612U CN204102723U CN 204102723 U CN204102723 U CN 204102723U CN 201420469612 U CN201420469612 U CN 201420469612U CN 204102723 U CN204102723 U CN 204102723U
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Abstract
The utility model discloses a kind of process units and production line thereof of aluminum electrolysis capacitor formed foil.This process units is used for corrosive aluminum foil and changes into, and it comprises at least one pair of electrolytic bath containing electrolyte, aluminium foil transport sector, alternating source; Each electrolytic bath comprises some electrodes, this some electrode is 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 of often pair of electrolytic bath extraction connect this alternating source makes often pair of electrolytic bath form a pair alternating current electrolytic bath, between adjacent two electrodes of this corrosive aluminum foil that this aluminium foil transport sector need change in each electrolytic bath.The aluminium electrolytic capacitor that the Waste Acid From Hua Cheng Foil adopting the utility model to produce is produced has storage life and the useful life of overlength.The utility model also openly has the production line of the process units of this aluminum electrolysis capacitor formed foil.
Description
Technical field
The utility model relates to a kind of process units of aluminum electrolysis capacitor formed foil and has the production line of this process units, particularly relates to the process units of the aluminum electrolysis capacitor formed foil of a kind of high hydrolytic conjunction property and has 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, as a kind of core material of traditional electronic component, the source of its anodizing film is by with 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 groove-oxide-film and is repaired groove-oven dry-rolling-inspection-warehouse-in.
In above-mentioned technological process, because corrosive aluminum foil needs to carry out the impurity such as cleaning chloride ion with deionized water in corrosion and processing procedure, so create aqua oxidation rete in cleaning process after aluminium foil corrosion, in follow-up drying course, create again thermal oxidation rete, carry out on aforementioned aqua oxidation film and heat oxide film basis so change into, simultaneously because formation process is in aqueous electrolyte, carry out under the condition of 85 degrees Celsius, so also aqua oxidation film can be produced in formation process, therefore after changing into and substantially terminating, Waste Acid From Hua Cheng Foil also needs the phosphoric acid solution immersing 5%-10% concentration, 60-80 degree Celsius, (determining according to formation voltage) carries out " depolarising " process, namely allow aqua oxidation film and phosphatase reaction, water-fast phosphate compounds is produced there being the position of aqua oxidation film, to improve the resistance to hydration performance of pellumina,
Due 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, the aqua oxidation film that its thickness and corrosive aluminum foil bring is lower than arranging, and goes pole intractability also higher, and now general phosphoric acid process goes pole process can not hydrated film be removed totally completely, so current chemical synthesis technology serves very large restriction for the useful life and storage life promoting aluminium electrolytic capacitor.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is provide a kind of process units of aluminum electrolysis capacitor formed foil and have the production line of this process units, and it solves conventional aluminum electrolytic capacitor poor stability, life-span low problem.
The utility model is achieved in that a kind of process units of aluminum electrolysis capacitor formed foil, and it is for changing into corrosive aluminum foil, and this process units comprises at least one pair of electrolytic bath containing electrolyte, aluminium foil transport sector, alternating source; Each electrolytic bath comprises some electrodes, this some electrode is 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 of often pair of electrolytic bath extraction connect this alternating source makes often pair of electrolytic bath form a pair alternating current electrolytic bath, and this corrosive aluminum foil that this aluminium foil transport sector need change into is walked successively between adjacent two electrodes in each electrolytic bath.
As the further improvement of such scheme, required this corrosive aluminum foil changed into is W or V or 3V shape by this aluminium foil transport sector in corresponding electrolytic bath.
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, have a live roller group in each electrolytic bath, each live roller group comprises some live rollers, and this corrosive aluminum foil that each live roller group need change into is walked in corresponding electrolytic bath.
The utility model also provides a kind of production line of aluminum electrolysis capacitor formed foil, and it comprises at least two process unitss as the above-mentioned aluminum electrolysis capacitor formed foil that any one describes, 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 changing into through this process units alternating current.
Further, this production line also comprises baking furnace, and this baking furnace was used for the aluminium foil through this DC power supply constant-voltage equipment constant voltage process in 400-480 degree temperature calcination 90-120 second.
Further, this production line also comprises direct voltage processing unit, and this direct voltage processing unit is used for the aluminium foil through this DC power supply constant-voltage equipment constant voltage process through adding direct voltage process 2 minutes containing in the electrolyte of phosphate cpd.
The utility model is owing to have employed alternating current chemical synthesis technology, simultaneously by traditional electrolytic bath, go pole groove and feed groove to be integrated, simultaneously also in depolarising in whole boost process, the dense oxide rete that after timely the heat oxide film that underproof aqua oxidation film and preceding working procedure bring being rejected, regeneration is new, the oxide-film obtained like this has very strong hydration-resisting ability, thus, the aluminium electrolytic capacitor adopting this Waste Acid From Hua Cheng Foil to produce also just is provided with storage life and the useful life of overlength.
Accompanying drawing explanation
The structural representation of the process units of the aluminum electrolysis capacitor formed foil that Fig. 1 provides for the utility model better embodiment.
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 the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, the structural representation of the process units of its aluminum electrolysis capacitor formed foil provided for the utility model better embodiment.This process units is used for changing into corrosive aluminum foil 1, and Waste Acid From Hua Cheng Foil is produced aluminium electrolytic capacitor.
This process units comprises at least one pair of electrolytic bath containing electrolyte, aluminium foil transport sector, alternating source 25.In the present embodiment, the logarithm of electrolytic bath is illustrated for a pair, as a pair electrolytic bath A, B in Fig. 1, certainly can also have paired in addition electrolytic bath C, D, 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 for 5 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 mutually and perpendicular to the bottom land of corresponding electrolytic bath.Thus, contain 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 points a, b that electrolytic bath is drawn connect this alternating source 25 makes often pair of electrolytic bath form a pair 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 need change into is walked successively between adjacent electrode in each electrolytic bath.Required this corrosive aluminum foil changed into 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 in corresponding electrolytic bath.
The corrosive aluminum foil 1 that described aluminium foil transport sector need change into passes from top to bottom between electrolytic bath A is by 4,5 electrodes between two plate electrodes, then pass between 5,6 electrode two plate electrodes from down to up, pass from top to bottom between 6,7 electrodes again, finally pass from lower to upper between 7,8 electrodes again, the corrosive aluminum foil 1 that need change into can be made in W (as shown in Figure 1) or V (as shown in Figure 2) or 3V (as shown in Figure 3) shape.Then same with electrolytic bath A method is in proper order through electrolytic bath B.Tie point a is drawn in the five plate electrode parallel connections of electrolytic bath A, tie point b is drawn in the five plate electrode parallel connections of electrolytic bath B, alternating source 25 line end is connected to electrode tip and the tie point a of electrolytic bath A, another line end of alternating source 25 is connected to electrode tip and the tie point b of electrolytic bath B, the electrolytic bath A of such connection and electrolytic bath B constitutes a pair alternating current electrolytic bath combination, while they become formation system separately and go electrode systems, the feed system of the other side each other, thus process units of the present utility model can accomplish electrolytic bath, pole groove and feed groove is gone to be integrated.Eliminate the feed system in traditional direct current chemical synthesis technology, exchange electrolytic bath every a pair, it integrates electrolytic bath, removes pole 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 need change into 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 putting corrosive aluminum foil 1 that paper tinsel machine the comes live roller 15 through electrolytic bath A toward descending, after live roller 16, cross live roller 17 from lower to upper down, through live roller 19 on live roller 18 is backward, toward after through changing into the live roller 20 of B groove down, up through live roller 22 after live roller 21, then downward on live roller 23 is backward, to later process direction after live roller 24.Corrosive aluminum foil 1 is at electrolytic bath A, B two in groove, and walking manner can be W type, and can certainly be the capable and 3V type of V word, when V word is capable, each live roller group needs 3 scroll wheels; During 3V type, each live roller group only needs 6 scroll wheels.
Process units of the present utility model is owing to have employed alternating current chemical synthesis technology, simultaneously also in depolarising in whole boost process, the dense oxide rete that after timely the heat oxide film that underproof aqua oxidation film and preceding working procedure bring being rejected, regeneration is new, the oxide-film obtained like this has very strong hydration-resisting ability, thus, the aluminium electrolytic capacitor adopting this Waste Acid From Hua Cheng Foil to produce also just is provided with storage life and the useful life of overlength.
The process units of high stable of the present utility model, 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 under corrosive aluminum foil is in alternating current condition to change into.
Adopt process units of the present utility model, when alternating current be added to electrolytic bath A, B upper time, 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 that " go to pole: reaction, electrolytic bath B is a feed groove for electrolytic bath A simultaneously.Otherwise when electrolytic bath A is in negative potential, electrolytic bath B is in positive potential, now, electrolytic bath B carries out changing into reaction, state that electrolytic bath A sentences " going to pole ", and electrolytic bath A is the feed groove of electrolytic bath B.
Above-mentioned principle explanation, adopt output device of the present utility model can change in boost process at corrosive aluminum foil and carry out depolarising work, the corrosive aluminum foil that the compact aluminum oxide film changed into directly is created on without hydration oxide-film and heat oxide film is surperficial, thus it is good to obtain memory property, the Waste Acid From Hua Cheng Foil of the various aluminium electrolytic capacitor of production of long service life.
In addition, a production line can be composed in series to enhance productivity by plural process units of the present utility model, during multipair configuration, can with series connection form 2 couple of each process units, 3 to or 6 pairs of electrolytic baths be arranged in order into production line.Alternation electrolytic bath post equipment is that direct current repairs groove, high-temperature roasting furnace etc., identical with traditional equipment, configures according to technological requirement.This direct current repairs groove can comprise DC power supply constant-voltage equipment and direct voltage processing unit, and this DC power supply constant-voltage equipment is used for the aluminium foil constant voltage 90-120 second after changing into through this process units alternating current; This direct voltage processing unit is used for the aluminium foil through this DC power supply constant-voltage equipment constant voltage process through adding direct voltage process 2 minutes containing in the electrolyte of phosphate compound.This high-temperature roasting furnace is used for by aluminium foil in 400-480 degree temperature calcination 90-120 second, and this aluminium foil can be the aluminium foil through this DC power supply constant-voltage equipment constant voltage process, also can be the aluminium foil through this direct voltage processing unit process.
In sum, the utility model discloses a kind of high stable, long life aluminum electrolytic capacitor Waste Acid From Hua Cheng Foil process units and there is the production line of this process units.This process units comprises: the electrolytic bath A and the electrolytic bath B that contain electrolyte; The each groove be 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 need change into passes from top to bottom between A groove is by 1,2 electrodes between two plate electrodes, then pass between 2,3 electrode two plate electrodes from down to up, pass from top to bottom between 3,4 electrodes again, finally pass from lower to upper between 4,5 electrodes again, make the corrosive aluminum foil 1 that need change in W type shape.Then same with electrolytic bath A method 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, alternating source 25 line end is connected to the electrode tip of electrolytic bath A, another line end of alternating source 25 is connected to the electrode tip of electrolytic bath B.The electrolytic bath A of such connection and electrolytic bath B constitutes a pair alternating current electrolytic bath combination, and while they become formation system separately, the feed system of the other side is each other again electrode systems simultaneously.Changing into trough can have 2 to be linked to be a production line to 6 to such combination, 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), start this alternating source to export alternating current and carry out constant current boost and change into.Corrosive aluminum foil adopts alternating current constant current boost to change into, and forming liquid low pressure adopts conventional ammonium adipate electrolyte, and high pressure forming liquid adopts SA electrolyte.
(2), in often pair of electrolytic bath, when one of them electrolytic bath is in the positive pole of alternating current, the corrosive aluminum foil in respective grooves starts boosting, and the corrosive aluminum foil in another electrolytic bath is in negative pole state.When electrolytic bath A is in the positive pole of alternating current, the corrosive aluminum foil in electrolytic bath A starts boosting, and now, the corrosive aluminum foil in electrolytic bath B is in negative pole state (going pole state).And when electrolytic bath B is in alternating current positive pole, the corrosive aluminum foil of electrolytic bath B starts boosting, now, the corrosive aluminum foil in electrolytic bath A is in negative pole state (going pole state).
Boost process goes to pole simultaneously, and constant voltage process is also going to pole simultaneously, makes compact aluminum oxide film in the corrosive aluminum foil superficial growth without hydration pellumina, can obtain the pellumina of hydration-resisting performance extra-heavy.
(3), when the tank voltage of often pair of electrolytic bath reaches the formation voltage of technology controlling and process, often pair of electrolytic bath enter pressure constant state, electric current reduces gradually.When 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 while constant voltage, oxide-film is still in and changes into and go in the alternation process of pole.In alternating current formation process, electrolytic bath A and B is a pair, and electrolytic bath C and D is a pair, and they are feed groove each other, between every two electrolytic baths therefore eliminating traditional forming apparatus, must have the pattern of a feed groove.Electrolytic bath can be A, B a pair, also can be A and B, C and D, the multipair electrolytic bath such as E and F.
(4), when ER effect obtains enough hour, exchange and change into end.
(5), aforementioned alternating current change into after aluminium foil enter DC constant voltage groove below and repair alumina diaphragm defect further, 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, the Waste Acid From Hua Cheng Foil after above-mentioned (5) process also to need in the baking furnace of 400 degree-480 degree roasting 90-120 seconds.
(7), through the process of phosphate electrolyte making alive.Particularly, Waste Acid From Hua Cheng Foil also needs through containing adding direct voltage process in the electrolyte of phosphate compound 2 minutes after step (6).
(8), rolling after 350 degree of 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 paired 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, overturn traditional handicraft unlike the chemical synthesis technology before high-temperature roasting furnace and adopted DC power supply chemical synthesis technology, the constant current alternating current boosting chemical synthesis technology that the utility model adopts and constant voltage alternating current chemical synthesis technology.When electrolytic bath A is in positive potential, the aluminium foil of electrolytic bath A starts boosting, and the aluminium foil of electrolytic bath B is in negative potential, namely be in counter voltage state, the aqua oxidation film that corrosive aluminum foil is brought and heat oxide film are peeled off, and meanwhile, electrolytic bath B serves to the effect of electrolytic bath A feed.When electrolytic bath B is in positive potential, electrolytic bath B aluminium foil starts boosting, and now the aluminium foil current potential of electrolytic bath A is 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 serves 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. changes into principle, and the production capacity according to design can have 4-8 electrolytic bath.
Production method of the present utility model is owing to have employed alternating current chemical synthesis technology, simultaneously also in depolarising in whole boost process, the dense oxide rete that after timely the heat oxide film that underproof aqua oxidation film and preceding working procedure bring being rejected, regeneration is new, the oxide-film obtained like this has very strong hydration-resisting ability, thus, the aluminium electrolytic capacitor adopting this Waste Acid From Hua Cheng Foil to produce also just is provided with storage life and the useful life of overlength.Simultaneously, production method of the present utility model, eliminate traditional liquid feed groove, each feed groove need consume 10-12 kilowatts of General Production Lines at least needs 2 feed grooves, within 1 year, within 250 days, calculate by production, every bar production line can save 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% phosphoric acid deionized water solution 50 degrees Celsius, 3 minutes.
Sintering temperature and time: 400 degrees Celsius, roasting time 2 minutes.
Boost current: each sample 20mA.
Test piece size: test area is the corrosive aluminum foil of 10X20mm, along the clump of corrosive aluminum foil to continuous sampling.
Scheme 1, DC boosting is to 20V-DC constant voltage 5 minutes-washed with de-ionized water-roasting-direct current 20V constant voltage 2 minutes-cleaning test.
Scheme 2, DC boosting is to 20V-DC constant voltage 5 minutes-washed with de-ionized water-depolarising process-direct current 20V constant voltage 2 minutes-roasting-direct current 20V constant voltage 2 minutes-cleaning test.
Scheme 3, AC boosting is to 18V-interchange 18V constant voltage 3 minutes-direct current 20V constant voltage 2 minutes-roasting-direct current 20V constant voltage 2 minutes-cleaning test.
Scheme 4, AC boosting is to 18V-interchange 18V constant voltage 3 minutes-direct current 20V constant voltage 2 minutes-depolarising process-direct current 20V constant voltage 2 minutes-roasting-direct current 20V constant voltage 2 minutes-cleaning 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 terminates.
Method of testing: capacitance is normal temperature (30 ± 2 degrees centigrade).
Pressure rising time: electrolyte 85 degrees Celsius, every sheet sample 1mA, to the time required for 20V from energising.
Oxide-film is withstand voltage: arrive voltage when to start timing 3 minutes 20V from voltage.
Above-mentioned result of the test lists in lower list 1.
Table 1
As can be seen from upper watch test result,
Scheme 1 is because be that customary DC changes into sample when not doing " depolarising " and processing, and be far from being hydration-resisting performance substantially.
Scheme 2 customary DC changes into sample after depolarising process, can boil 1 hour in deionized water, and before being less than hydration test pressure rising time, but process is 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 at hydration test after 6 hours, and before being still less than test pressure rising time, but in experiment after 12 hours, pressure rising time is obviously greater than the time before test.
Scheme 4 adopts alternating current to change into and go pole to process the technique combined, and the test of its hydration-resisting after 12h, is still less than the pressure rising time before test greatly.
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 with as comparing embodiment 1 together, test technology flow process is as the sample in No. 4 scheme of in row 1.
AC boosting is to 18V-interchange 18V constant voltage 3 minutes-direct current 20V constant voltage 2 minutes-depolarising process-direct current 20V constant voltage 2 minutes-roasting-direct current 20V constant voltage 2 minutes-cleaning 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 lists in table 2.
Table 2
Above-mentioned test illustrates, when the frequency of alternating current is at 30Hz to 50Hz, can obtain the Waste Acid From Hua Cheng Foil that hydration-resisting performance is superpower, when alternating current is in 35-40Hz scope, the oxide-film hydration-resisting ability obtained after changing into is the strongest.
Production method according to traditional: to carry out changing into the electrode foil obtained through changing on its surface after high pure electronic aluminium foil corrosion, is used as the anode or negative electrode of producing aluminium electrolytic capacitor.Because pellumina has logical interchange, the character of stopping direct current, all adopt DC power supply chemical synthesis technology both at home and abroad for a long time, the defect of this chemical synthesis technology is while the corrosive aluminum foil heat oxide film corroded in early stage in the aqua oxidation film and drying course produced in cleaning process starts to generate fine and close pellumina on the surface, electrode is in aqueous electrolyte, change into while producing fine and close pellumina when 85 degrees Celsius, also aqua oxidation film is created, in order to the anti-hydration pellumina obtained, increase by one phosphoric acid " depolarising " operation is also needed in formation process, object is the water-insoluble matter adopting phosphoric acid and hydrated alumina film to change into aluminophosphate structure, the characteristic of pellumina was improved afterwards through pyrolytic conversion, because whole process is that hydrated alumina film and compact aluminum oxide film interleaved order generate, go pole process can not complete for aqua oxidation film total overall reaction, so the Waste Acid From Hua Cheng Foil obtained often does not reach perfect condition in hydration-resisting performance.
The utility model adopts inverse conventional scheme, alternating current is utilized to carry out changing into production, utilize alternating current, when electrode is in forward " changing into ", form compact aluminum oxide film, when electrode is sentenced reverse, be in " going to pole " state, peel off hydrated alumina film, like this, in boost process, not only constantly carry out " changing into " and " going to pole " process, in constant voltage process also in " changing into " and " going to pole " 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 utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
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 at least one pair of electrolytic bath containing electrolyte, aluminium foil transport sector, alternating source; Each electrolytic bath comprises some electrodes, this some electrode is 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 of often pair of electrolytic bath extraction connect this alternating source makes often pair of electrolytic bath form a pair alternating current electrolytic bath, and this corrosive aluminum foil that this aluminium foil transport sector need change into is walked successively between adjacent two electrodes in each electrolytic bath.
2. the process units of aluminum electrolysis capacitor formed foil according to claim 1, is characterized in that: required this corrosive aluminum foil changed into is W or V or 3V shape by this aluminium foil transport sector in corresponding electrolytic bath.
3. 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.
4. the process units of aluminum electrolysis capacitor formed foil according to claim 1, is characterized in that: this electrolyte is ammonium adipate electrolyte or SA electrolyte.
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, there is in each electrolytic bath a live roller group, each live roller group comprises some live rollers, and this corrosive aluminum foil that each live roller group need change into is walked in corresponding electrolytic bath.
7. a production line for aluminum electrolysis capacitor formed foil, is characterized in that: it comprises at least two process unitss as the aluminum electrolysis capacitor formed foil in claim 1-6 as described in any one, 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 changing into through this process units alternating current.
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, and this baking furnace was used for the aluminium foil through this DC power supply constant-voltage equipment constant voltage process in 400-480 degree temperature calcination 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 used for the aluminium foil through this DC power supply constant-voltage equipment constant voltage process through adding direct voltage process 2 minutes containing in the electrolyte of phosphate cpd.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157457A (en) * | 2014-08-20 | 2014-11-19 | 吴江飞乐天和电子材料有限公司 | Aluminium electrolytic capacitor formed foil production device and production line thereof |
| CN105220199A (en) * | 2015-11-04 | 2016-01-06 | 四川立业电子有限公司 | Improve method and the device of Waste Acid From Hua Cheng Foil visual appearance |
-
2014
- 2014-08-20 CN CN201420469612.0U patent/CN204102723U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157457A (en) * | 2014-08-20 | 2014-11-19 | 吴江飞乐天和电子材料有限公司 | Aluminium electrolytic capacitor formed foil production device and production line thereof |
| CN104157457B (en) * | 2014-08-20 | 2017-08-11 | 吴江飞乐天和电子材料有限公司 | The process units and its production line of a kind of aluminum electrolysis capacitor formed foil |
| CN105220199A (en) * | 2015-11-04 | 2016-01-06 | 四川立业电子有限公司 | Improve method and the device of Waste Acid From Hua Cheng Foil visual appearance |
| CN105220199B (en) * | 2015-11-04 | 2018-02-06 | 四川立业电子有限公司 | Improve the method and device of Waste Acid From Hua Cheng Foil presentation quality |
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