CN104157457B - The process units and its production line of a kind of aluminum electrolysis capacitor formed foil - Google Patents
The process units and its production line of a kind of aluminum electrolysis capacitor formed foil Download PDFInfo
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- CN104157457B CN104157457B CN201410409310.9A CN201410409310A CN104157457B CN 104157457 B CN104157457 B CN 104157457B CN 201410409310 A CN201410409310 A CN 201410409310A CN 104157457 B CN104157457 B CN 104157457B
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Abstract
The present invention discloses the process units and its production line of a kind of aluminum electrolysis capacitor formed foil.The process units is melted into for corrosive aluminum foil, and it includes at least one pair of and contains the electrolytic bath of electrolyte, aluminium foil transmission mechanism, alternating source；Each electrolytic bath includes some electrodes, 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 tie point, two tie points that each pair electrolytic bath is drawn, which connect the alternating source, makes each pair electrolytic bath constitute a pair of alternating current electrolytic baths, and the aluminium foil transmission mechanism will walk between two neighboring electrode of the corrosive aluminum foil that need to be melted into each electrolytic bath.The aluminium electrolutic capacitor produced using Waste Acid From Hua Cheng Foil produced by the invention has the storage life and service life of overlength.Invention additionally discloses the production line of the process units with the aluminum electrolysis capacitor formed foil.
Description
Technical field
The present invention relates to a kind of process units of aluminum electrolysis capacitor formed foil and the production line with the process units, especially
It is related to a kind of process units of the aluminum electrolysis capacitor formed foil of high hydrolytic conjunction property and the production line with the process units.
Background technology
The production of aluminum electrolysis capacitor formed foil has had the history of nearly 70 years in the whole world, is used as a kind of traditional electronics
The core material of element, the source of its anodizing film be by using corrosive aluminum foil, with ammonium adipate (low voltage product) or
Person's ammonium sebacate, boric acid ammonium salt (high-voltage product) electrolyte are used as forming liquid, silicon controlled rectification power source or Switching Power Supply conduct
Dc source, till now, its general low pressure process flow are as follows：
Corrosive aluminum foil feeds 3-liquid of groove 1-electrolytic bath, 2-electrolytic bath through 1-liquid of electrolytic bath and feeds 2-electrolytic bath of groove
4-(5-liquid of electrolytic bath feed groove, 3-electrolytic bath 6 etc.)-deionized water rinse baths-phosphorous acid solution depolarising processing
Groove-deionized water rinse bath-oxide-film repairs groove-high-temperature roasting baking oven-oxide-film and repairs groove-drying-winding-inspection
Test-be put in storage.
In above-mentioned technological process, because corrosive aluminum foil needs to carry out cleaning chlorine with deionized water in corrosion and processing procedure
The impurity such as ion, so generating aqua oxidation film layer in cleaning process after aluminium foil corrosion, in follow-up drying course, are produced again
Thermal oxide film layer is given birth to, so chemical conversion is carried out on the basis of foregoing aqua oxidation film and heat oxide film, simultaneously because chemical conversion
Process is in aqueous electrolyte, to be carried out under conditions of 85 degrees Celsius, so aqua oxidation film can be also produced in formation process, because
This chemical conversion terminate substantially after, Waste Acid From Hua Cheng Foil also need to immerse 5%-10% concentration phosphoric acid solution, 60-80 degrees Celsius, (according to change
Into depending on voltage) carry out " depolarising " and handle, that is, allow aqua oxidation film and phosphatase reaction, at the position for having aqua oxidation film
Water insoluble phosphate compounds is produced, to improve the resistance to hydration performance of pellumina,
Because in above-mentioned technical process, aqua oxidation film and dense oxidation film are weave ins, and formation voltage is lower,
Its chemical conversion film is thinner, and the aqua oxidation film that its thickness and corrosive aluminum foil are brought is lower than arranging, and goes pole intractability also higher, and shows
Pole processing is gone hydrated film to be removed can not possibly completely in general phosphoric acid processing clean, so, current chemical synthesis technology is for carrying
The service life and storage life for rising aluminium electrolutic capacitor serve very big restriction.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of production of aluminum electrolysis capacitor formed foil dress
Put and the production line with the process units, it solves the problem of traditional aluminium electrolutic capacitor stability is poor, the life-span is low.
The present invention is achieved in that a kind of process units of aluminum electrolysis capacitor formed foil, and it is used for corrosive aluminum foil
It is melted into, the process units contains the electrolytic bath of electrolyte, aluminium foil transmission mechanism, alternating source including at least one pair of；Often
Individual electrolytic bath includes some electrodes, and some electrodes are parallel to each other and perpendicular to the bottom land of corresponding electrolytic bath, each electrolytic bath
In some electrodes be connected in parallel and draw one of tie point, each pair electrolytic bath draw two tie points connect the alternation
Power supply makes each pair electrolytic bath constitute a pair of alternating current electrolytic baths, and the aluminium foil transmission mechanism is by the corrosive aluminum foil that need to be melted into every
Walked successively between two neighboring electrode in individual electrolytic bath.
As the further improvement of such scheme, electrode uses the electrode in graphite electrode, each groove to use cable or copper
Row is connected in parallel, and two identical grooves partner, and being connected in parallel for each drawing a little is connected with the output end of alternating source.
As the further improvement of such scheme, the aluminium foil transmission mechanism is accordingly changing the corrosive aluminum foil of required chemical conversion
It is in W or V or 3V shapes in grooving.
As the further improvement of such scheme, the distance between two neighboring electrode is 7-10cm.
As the further improvement of such scheme, the alternating current frequency of the alternating source is in 20-50Hz.
As the further improvement of such scheme, the aluminium foil transmission mechanism includes at least one pair of live roller group, Mei Gehua
There is live roller group, each live roller group includes some live rollers in grooving, each live roller group is by need
Into the corrosive aluminum foil walked in corresponding electrolytic bath.
The present invention also provides a kind of production line of aluminum electrolysis capacitor formed foil, and it is any one as described above that it includes at least two
The process units of the aluminum electrolysis capacitor formed foil of description is planted, at least two process units is composed in series the production line.
As the further improvement of such scheme, the production line also includes dc source constant-voltage equipment, and the dc source is permanent
Pressure device is used for aluminium foil constant pressure 90-120 seconds after being melted into through the process units alternating current.
Further, the production line also includes roaster, and the roaster is used for will be through the dc source constant-voltage equipment constant pressure
The aluminium foil of processing is calcined 90-120 seconds in 400-480 degree celsius temperatures.
Further, the production line also includes DC voltage processing unit, and the DC voltage processing unit is used for will be through this
The aluminium foil of dc source constant-voltage equipment constant pressure processing is passed through in the electrolyte containing phosphate cpd plus DC voltage is handled 2 minutes.
The present invention is as a result of alternating current chemical synthesis technology, while by traditional electrolytic bath, going pole groove and feed groove to close
It is integrated, simultaneously also in depolarising in whole boost process, timely underproof aqua oxidation film and preceding working procedure
The heat oxide film brought regenerates new dense oxide film layer after rejecting, the oxide-film so obtained has very strong hydration-resisting energy
Power, thus, the aluminium electrolutic capacitor produced using this Waste Acid From Hua Cheng Foil is also just provided with the storage life and service life of overlength.
Brief description of the drawings
The structural representation of the process units for the aluminum electrolysis capacitor formed foil that Fig. 1 provides for better embodiment of the present invention
Figure.
Fig. 2 is another walking manner of the corrosive aluminum foil in electrolytic bath in Fig. 1.
Fig. 3 is another walking manner of corrosive aluminum foil in electrolytic bath in Fig. 1.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
Referring to Fig. 1, the process units of its aluminum electrolysis capacitor formed foil provided for better embodiment of the present invention
Structural representation.The process units is used to be melted into corrosive aluminum foil 1, and Waste Acid From Hua Cheng Foil is produced into aluminium electrolutic capacitor.
The process units contains the electrolytic bath of electrolyte, aluminium foil transmission mechanism, alternating source 25 including at least one pair of.
In present embodiment, the logarithm of electrolytic bath is illustrated exemplified by a pair, a pair of electrolytic baths A, B in such as Fig. 1, certainly also
Can there are electrolytic bath C, D paired in addition, electrolytic bath E, F etc..
Electrolytic bath A, B can use stainless steel or high-temperature resistance plastice material.Each electrolytic bath includes some electrodes, at this
Electrode is illustrated exemplified by 5 in embodiment, such as in electrolytic bath A numbering be 4,5,6,7,8 five electrodes, electrolytic bath
In B numbering be 9,10,11,12,13 5 electrodes.Electrode is made by graphite material, 4,5,6,7,8 five electrodes, 9,10,11,
12nd, the bottom land of 13 5 electrodes mutually parallel and perpendicular to corresponding electrolytic bath.Thus, contain the chemical conversion cell body A of electrolyte
It is used to impregnate corresponding five conductive electrodes with chemical conversion cell body B, five conductive electrode parallel verticals are placed, and adjacent electrode spacing is excellent
Elect 7cm -10cm as.The electrolyte can be ammonium adipate electrolyte or SA electrolyte, such as low pressure forming liquid using routine
Ammonium adipate electrolyte, high pressure forming liquid uses SA electrolyte.
Five electrodes in each electrolytic bath are connected in parallel and draw one of tie point, and such as electrolytic bath A draws connection
Point a, electrolytic bath B draw tie point b.Five electrodes in each electrolytic bath can be in parallel using cable or copper bar.
Two tie points a, b that electrolytic bath is drawn connect the output end of the alternating source 25, each pair electrolytic bath is constituted one
To alternating current electrolytic bath.The alternating current frequency of the alternating source 25 is in 20-50Hz.The aluminium foil transmission mechanism need to will be melted into
The corrosive aluminum foil 1 is walked between two neighboring electrode successively in each electrolytic bath.The aluminium foil transmission mechanism is by required chemical conversion
The corrosive aluminum foil is in W (as shown in Figure 1) or V (as shown in Figure 2) or 3V (as shown in Figure 3) shape in corresponding electrolytic bath.
The aluminium foil transmission mechanism by the corrosive aluminum foil 1 that need to be melted into electrolytic bath A between 4,5 electrodes from top to bottom from two panels
Pass through, then passed from down to up between the plate electrode of 5,6 electrode two between electrode, then passed through from top to bottom between 6,7 electrodes, most
Passed from lower to upper between 7,8 electrodes again afterwards, it is in W (as shown in Figure 1) or V (as shown in Figure 2) that can make the corrosive aluminum foil 1 that need to be melted into
Or 3V (as shown in Figure 3) shape.Then the method same with electrolytic bath A passes through electrolytic bath B with secondary.By electrolytic bath A five electricity
It is extremely in parallel to draw tie point a, tie point b, the line that alternating source 25 is exported are drawn into electrolytic bath B five plate electrodes parallel connection
End is connected to electrolytic bath A electrode tip i.e. tie point a, and another line end that alternating source 25 is exported is connected into electrolytic bath B's
Electrode tip is tie point b, and the electrolytic bath A and electrolytic bath B so connected constitutes a pair of alternating current electrolytic bath combinations, and they are each
From as formation system and while go electrode systems, the feed system of other side each other, thus the process units of the present invention can accomplish
Electrolytic bath, go pole groove and feed groove be to be integrated.Eliminate the feed system in traditional direct current chemical synthesis technology, every a pair of friendships
Grooving is fluidized, it integrates electrolytic bath, removes pole groove and feed groove.
The aluminium foil transmission mechanism includes having a live roller group at least one pair of live roller group, each electrolytic bath,
Each live roller group includes some live rollers, and each live roller group is by the corrosive aluminum foil that need to be melted into corresponding electrolytic bath
Middle walking.In the present embodiment, to have numbering in electrolytic bath A be 15,16,17,18,19 5 live rollers, is had in electrolytic bath B
Numbering is 20,21,22,23,24 5 live rollers.By putting live roller 15 of the corrosive aluminum foil 1 through electrolytic bath A that paper tinsel machine comes
Toward descending, after live roller 16, live roller 17 is crossed down from lower to upper, upwards through live roller after live roller 18
19, the live roller 20 after through chemical conversion B grooves is down, then downward through passing up through live roller 22 after live roller 21
After dynamic roller 23 upwards, to later process direction after live roller 24.Corrosive aluminum foil 1 is in the groove of electrolytic bath A, B two, walking side
Formula can be W types, naturally it is also possible to be V words row and 3V types, during V word rows, and each live roller group needs 3 scroll wheels；3V types
When, each live roller group only needs to 6 scroll wheels.
The process units of the present invention is as a result of alternating current chemical synthesis technology, it is characterised in that same in whole boost process
When also in depolarising, the heat oxide film that timely underproof aqua oxidation film and preceding working procedure are brought regenerates new after rejecting
Dense oxide film layer, the oxide-film so obtained has very strong hydration-resisting ability, thus, produced using this Waste Acid From Hua Cheng Foil
Aluminium electrolutic capacitor is also just provided with the storage life and service life of overlength.
High stable, the process units of long life aluminum electrolytic capacitor Waste Acid From Hua Cheng Foil of the present invention, its core apparatus is electrolytic bath
Position, its most crucial position is：The present apparatus is put on electrolytic bath using alternating source, makes to be melted into corrosive aluminum foil in friendship
It is melted under the conditions of time-dependent current.
Using the process units of the present invention, when alternating current is added on electrolytic bath A, B, when electrolytic bath A is positive potential, change
Grooving B is negative potential, and now, electrolytic bath A is melted into, and what electrolytic bath B was carried out is " to go to pole to react, while electrolytic bath B is for changing
Grooving A is a feed groove.Conversely, when electrolytic bath A is in negative potential, electrolytic bath B is in positive potential, and now, electrolytic bath B enters
Row chemical conversion reaction, electrolytic bath A sentences " going to pole " state, and electrolytic bath A is electrolytic bath B feed groove.
Above-mentioned principle explanation, can be melted into boost process in corrosive aluminum foil using the output device of the present invention and carry out going to pole
Chemical industry is made, and the dense oxide aluminium film of chemical conversion is directly generating in the corrosive aluminum foil surface without hydration oxide-film and heat oxide film, from
And obtain that storage performance is good, the Waste Acid From Hua Cheng Foil of the various aluminium electrolutic capacitors of production of service life length.
Furthermore it is possible to be composed in series a production line by more than two process units of the invention to improve production effect
Rate, during multipair configuration, can be arranged in order into 2 couple of each process units, 3 pairs or 6 pairs of electrolytic baths with the form of series connection
Production line.Alternation electrolytic bath post equipment is that direct current repairs groove, high-temperature roasting furnace etc., identical with traditional equipment, according to technique
It is required that configuration.The direct current, which repairs groove, can include dc source constant-voltage equipment and DC voltage processing unit, and the dc source is permanent
Pressure device is used for aluminium foil constant pressure 90-120 seconds after being melted into through the process units alternating current；The DC voltage processing unit is used
Passed through in the aluminium foil that will be handled through the dc source constant-voltage equipment constant pressure in the electrolyte containing phosphate compound plus direct current
Pressure processing 2 minutes.The high-temperature roasting furnace is used to aluminium foil being calcined 90-120 seconds in 400-480 degree celsius temperatures, and the aluminium foil can be with
It is the aluminium foil handled through the dc source constant-voltage equipment constant pressure or the aluminium foil handled through the DC voltage processing unit.
In summary, the invention discloses a kind of high stable, the process units of long life aluminum electrolytic capacitor Waste Acid From Hua Cheng Foil and
It has the production line of the process units.The process units includes：Contain the electrolytic bath A and electrolytic bath B of electrolyte；It is immersed in
Each groove in electrolytic bath A, B electrolyte contains five conductive electrodes, and five conductive electrode parallel verticals are placed, between electrode
Away from for 7cm -10cm；Aluminium foil transmission mechanism.The aluminium foil transmission mechanism is by the corrosive aluminum foil 1 that need to be melted into A grooves by 1,2 electrodes
Between passed through from top to bottom between two plate electrodes, then passed from down to up between the plate electrode of 2,3 electrode two, then from 3,4 electrodes
Between pass through from top to bottom, finally passed from lower to upper between 4,5 electrodes again, it is in W type shapes to make the corrosive aluminum foil 1 that need to be melted into.Then
The method same with electrolytic bath A passes through electrolytic bath B with secondary.Electrolytic bath A 5 plate electrodes are connected in parallel, by 5 of electrolytic bath B
Electrode is connected in parallel, and a line end of the output end of alternating source 25 is connected into electrolytic bath A electrode tip, and alternating source 25 is defeated
Another line end for going out end is connected to electrolytic bath B electrode tip.The electrolytic bath A and electrolytic bath B so connected constitutes a pair of friendships
Time-dependent current electrolytic bath is combined, while each of which turns into formation system, each other the feed system of other side, while being polar system again
System.Chemical conversion trough can have combination as 2 pairs to 6 pairs to be linked to be a production line, to improve production efficiency, high steady for producing
It is fixed, 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 alternating source output alternating current and carry out constant current boost chemical conversion.Corrosive aluminum foil is permanent using alternating current
Stream boosting chemical conversion, forming liquid low pressure uses SA electrolyte using conventional ammonium adipate electrolyte, high pressure forming liquid.
(2), in each pair electrolytic bath, when one of electrolytic bath is in the positive pole of alternating current, the corrosion in corresponding groove
Aluminium foil starts boosting, and the corrosive aluminum foil in another electrolytic bath is in negative pole state.When electrolytic bath A is being in alternating current just
During pole, the corrosive aluminum foil in electrolytic bath A starts boosting, and now, the corrosive aluminum foil in electrolytic bath B (removes pole shape in negative pole state
State).And when electrolytic bath B is in alternating current positive pole, electrolytic bath B corrosive aluminum foil starts boosting, now, in electrolytic bath A
Corrosive aluminum foil is in negative pole state (going pole state).
Boost process goes to pole simultaneously, and constant voltage process is also going to pole simultaneously, alloing dense oxide aluminium film without aqua oxidation
The corrosive aluminum foil superficial growth of aluminium film, obtains the pellumina of anti-hydration energy extra-heavy.
(3), when the tank voltage of each pair electrolytic bath reaches the formation voltage of technology controlling and process, the entrance constant pressure shape of each pair electrolytic bath
State, electric current reduces gradually.When electrolytic bath A, B tank voltage reach the formation voltage of technology controlling and process, electrolytic bath A, B enter constant pressure shape
State, electric current reduces gradually, while constant pressure, and oxide-film remains in chemical conversion and gone during the alternation of pole.In alternating current
During, electrolytic bath A and B are a pair, and electrolytic bath C and D are a pair, and they feed groove each other, therefore eliminate traditional chemical conversion
Between each two electrolytic bath of equipment, it is necessary to have the pattern of a feed groove.Electrolytic bath can be a pair of A, B or A and
The multipair electrolytic bath such as B, C and D, E and F.
(4), when electric current becomes sufficiently small, exchange chemical conversion terminates.
(5), the aluminium foil after foregoing alternating current chemical conversion further repairs alumina diaphragm defect into DC constant voltage groove below, directly
Flow constant pressure 2-3 minutes.Specifically, the aluminium foil after being melted into through alternating current, also needs to make oxygen within 90-120 seconds through dc source constant pressure
Change film layer more perfect.
(6), after high-temperature roasting (450 degrees Celsius 90 seconds or so).Specifically, the Waste Acid From Hua Cheng Foil after being handled through above-mentioned (5) is also
Need to be through roasting 90-120 seconds in 400 degree-480 degrees Celsius of roaster.
(7), handled through phosphoric acid salt electrolyte making alive.Specifically, Waste Acid From Hua Cheng Foil is also needed through containing phosphate after step (6)
DC voltage is added to handle 2 minutes in the electrolyte of class compound.
(8), wind, examine after 350 degrees Celsius of oven for drying.
Wherein, in step (1), (2), (3), corrosive aluminum foil 1 to be changed leads feed groove arriving again without traditional liquid
Grooving, but corrosive aluminum foil 1 is directly connected to electrolytic bath A and electrolytic bath B, electrolytic bath C and electrolytic bath D etc. are by that analogy.
Above-mentioned technological process is compared with traditional handicraft, the difference is that the chemical synthesis technology before high-temperature roasting furnace has overturned biography
Technique of uniting uses dc source chemical synthesis technology, constant current alternating current boosting chemical synthesis technology and constant pressure alternating current that the present invention is used
Chemical synthesis technology.When electrolytic bath A is in positive potential, electrolytic bath A aluminium foil starts boosting, and electrolytic bath B aluminium foil is in negative potential,
Counter voltage state is namely in, aqua oxidation film and heat oxide film that corrosive aluminum foil is brought is peeled off, meanwhile, electrolytic bath B rises
The effect fed to electrolytic bath A is arrived.When electrolytic bath B is in positive potential, electrolytic bath B aluminium foils start boosting, now electrolytic bath A
Aluminium foil current potential be negative, electrolytic bath A aluminium foil is in counter voltage state, and electrolytic bath A aluminium foils enter process of depolarization, is melted into simultaneously
Groove A serves feed effect for electrolytic bath B.Electrolytic bath C and D grooves below, the chemical conversion principle such as electrolytic bath E and F ibid, according to setting
The production capacity of meter can have 4-8 electrolytic bath.
The production method of the present invention is also being gone simultaneously as a result of alternating current chemical synthesis technology in whole boost process
Polarization, the heat oxide film that timely underproof aqua oxidation film and preceding working procedure are brought regenerates new fine and close oxygen after rejecting
Change film layer, the oxide-film so obtained has very strong hydration-resisting ability, thus, the aluminium electroloysis electricity produced using this Waste Acid From Hua Cheng Foil
Container is also just provided with the storage life and service life of overlength.Meanwhile, production method of the invention eliminates traditional liquid
Groove is fed, each feed groove, which need to consume 10-12 kilowatts of General Production Lines, at least needs 2 feed grooves, and 1 year by production 250 days
Calculate, every production line can save 12 ten thousand -14 ten thousand kilowatts of electric energy.
Subsequently, we carry out technique from following technique and compare experiment.
Comparing embodiment 1
Technical recipe and parameter.
Electrolyte：The deionized water solution of ammonium adipate 15%, 85 degrees Celsius.
Polarization process liquid and processing time：5% 50 degrees Celsius of phosphoric acid deionized water solution, 3 minutes.
Sintering temperature and time：400 degrees Celsius, roasting time 2 minutes.
Boost current：Each sample 20mA.
Test specimen size：Test area is 10X20mm corrosive aluminum foil, along the clump of corrosive aluminum foil to continuous sampling.
Scheme 1, DC boosting to 5 minutes-deionized water of 20V-DC constant voltage cleaning-roasting-direct current 20V constant pressures 2
Minute-cleaning is tested.
Scheme 2, DC boosting to 5 minutes-deionized water of 20V-DC constant voltage cleaning-depolarising processing-direct current 20V
2 minutes-roasting of constant pressure-direct current 20V constant pressures 2 minutes-cleaning test.
Scheme 3, AC boosting to 18V-exchange 18V constant pressure 3 minutes-direct current 20V 2 minutes-roasting-direct currents of constant pressure
2 minutes-cleaning the test of 20V constant pressures.
Scheme 4, AC boosting to 18V -2 minutes-depolarising of exchange 18V constant pressure 3 minutes-direct current 20V constant pressures processing -
2 minutes-roasting of direct current 20V constant pressures-direct current 20V constant pressures 2 minutes-cleaning test
The trial target chemical conversion of above-mentioned 4 schemes detects capacitance, pressure rising time, anti-hydration energy (water resistant respectively after terminating
Conjunction performance is divided into deionized water and boiled 60 minutes, 360 minutes 120 minutes and 720 minutes).
Method of testing：Capacitance is normal temperature (30 ± 2 degrees centigrade).
Pressure rising time：85 degrees Celsius of electrolyte, every sample 1mA, to the time required for 20V since being powered.
Oxide-film is pressure-resistant：Voltage since voltage reaches 20V during timing 3 minutes.
Above-mentioned result of the test is listed in following table 1.
Table 1
It can be seen that from upper table result of the test
Scheme 1 is because be that customary DC is melted into sample when not doing " depolarising " processing, and be far from being anti-hydration energy substantially.
The customary DC of scheme 2 is melted into sample after depolarising processing, and 1 hour, pressure rising time can be boiled in deionized water
Before hydration test, but after handling 2 hours, pressure rising time is substantially elongated, and performance starts to deteriorate.
Scheme 3 is that, using alternating current chemical conversion, its sample is after hydration test 6 hours, and pressure rising time is also less than examination
Before testing, but after experiment 12 hours, pressure rising time is significantly greater than the time before experiment.
Scheme 4 is the technique for being melted into and being gone pole processing to be combined using alternating current, and its hydration-resisting is tested after 12h,
Still it is considerably less than the pressure rising time before experiment.
Comparing embodiment 2
Compare influence of the alternating current chemical conversion of different frequency to anti-hydration, specific test recipe and experimental condition, survey
Method for testing and such as comparing embodiment 1 are same, the sample in No. 4 schemes in test technology flow such as row 1.
AC boosting is to 18V-exchange 18V constant pressure 3 minutes-direct current 20V constant pressures, 2 minutes-depolarisings processing-direct current
2 minutes-roasting of 20V constant pressures-direct current 20V constant pressures 2 minutes-cleaning test.
Alternating current is using No. 1 sample 20Hz, No. 2 samples 25Hz, No. 3 samples 30Hz, No. 4 sample 35Hz.No. 5 samples
40Hz, No. 6 samples 45Hz, No. 7 sample 50Hz.
The result of the test of 7 samples is listed in table 2
Above-mentioned experiment explanation, when the frequency of alternating current is in 30Hz to 50Hz, can obtain anti-hydration can be superpower
Waste Acid From Hua Cheng Foil, when alternating current is in 35-40Hz scopes, the oxide-film hydration-resisting ability obtained after chemical conversion is most strong.
According to traditional production method：On its surface be melted into after high pure electronic aluminium foil corrosion obtaining the electricity through chemical conversion
Pole paper tinsel, is used as producing the anode or negative electrode of aluminium electrolutic capacitor.Due to property of the pellumina with logical exchange, stopping direct current
Matter, long-term all to use dc source chemical synthesis technology both at home and abroad, the defect of this chemical synthesis technology is clear in early stage corrosion for corrosive aluminum foil
Start the fine and close pellumina of generation on heat oxide film surface in the aqua oxidation film and drying course that are produced during washing
Meanwhile, electrode while chemical conversion produces fine and close pellumina in the case of 85 degrees Celsius, is also generated in aqueous electrolyte
Aqua oxidation film, for the anti-hydration pellumina got well, also needs to increase by one of phosphoric acid " depolarising " in formation process
Process, it is therefore an objective to the water-insoluble matter of aluminophosphate structure is changed into using phosphoric acid and aqua oxidation aluminium film, it is later through pyrolytic conversion
Improve the characteristic of pellumina, because whole process is aqua oxidation aluminium film and the generation of dense oxide aluminium film interleaved order, go to pole
Process can not possibly finish aqua oxidation film total overall reaction, thus obtained Waste Acid From Hua Cheng Foil anti-hydration can on often do not reach reason
Think state.
The present invention is to use inverse conventional scheme, chemical conversion production is carried out using alternating current, using alternating current, at electrode
When forward direction " chemical conversion ", form dense oxide aluminium film, at electrode with it is reverse when, in " going to pole " state, peel off aqua oxidation
Aluminium film, so, not only constantly carries out " chemical conversion " and " going to pole " process, also in " chemical conversion " in constant voltage process in boost process
During " going to pole ", the chemical conversion electrode so obtained, its anti-hydration can be greatly improved.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of process units of aluminum electrolysis capacitor formed foil, it is used for corrosive aluminum foil and is melted into, it is characterised in that：It is wrapped
Include at least one pair of and contain the electrolytic bath of electrolyte, aluminium foil transmission mechanism, alternating source；Each electrolytic bath includes some electricity
Pole, some electrodes are parallel to each other and some electrodes in the bottom land of corresponding electrolytic bath, each electrolytic bath are connected in parallel
And one of tie point is drawn, two tie points that each pair electrolytic bath is drawn connect the output end of the alternating source, make each pair
Electrolytic bath constitutes a pair of alternating current electrolytic baths, and the aluminium foil transmission mechanism is by the corrosive aluminum foil that need to be melted into each electrolytic bath
Walk successively between two neighboring electrode.
2. the process units of aluminum electrolysis capacitor formed foil according to claim 1, it is characterised in that electrode uses graphite
Electrode in electrode, each groove is connected in parallel using cable or copper bar, and two identical grooves partner, the parallel connection each drawn
The output end connection of tie point and alternating source.
3. the process units of aluminum electrolysis capacitor formed foil according to claim 1, it is characterised in that：The aluminium foil conveyer
Structure walks the corrosive aluminum foil of required chemical conversion in corresponding electrolytic bath in W or V or 3V shapes.
4. the process units of aluminum electrolysis capacitor formed foil according to claim 1, it is characterised in that：Two neighboring electrode
The distance between be 7-10cm.
5. the process units of aluminum electrolysis capacitor formed foil according to claim 1, it is characterised in that：The alternating source
Alternating current frequency is in 20-50Hz.
6. the process units of aluminum electrolysis capacitor formed foil according to claim 1, it is characterised in that：The aluminium foil conveyer
Structure includes having a live roller group at least one pair of live roller group, each electrolytic bath, if each live roller group includes
Dry live roller, each live roller group walks the corrosive aluminum foil that need to be melted into corresponding electrolytic bath.
7. a kind of production line of aluminum electrolysis capacitor formed foil, it is characterised in that：It is included at least two such as claim 1-6
The process units of aluminum electrolysis capacitor formed foil described in any one, at least two process units is composed in series the production
Line.
8. the production line of aluminum electrolysis capacitor formed foil according to claim 7, it is characterised in that：The production line also includes
Dc source constant-voltage equipment, the dc source constant-voltage equipment is used for the aluminium foil constant pressure after being melted into through the process units alternating current
90-120 seconds.
9. the production line of aluminum electrolysis capacitor formed foil according to claim 8, it is characterised in that：The production line also includes
Roaster, the aluminium foil that the roaster is used to handle through the dc source constant-voltage equipment constant pressure is roasted in 400-480 degree celsius temperatures
Burn 90-120 seconds.
10. the production line of aluminum electrolysis capacitor formed foil according to claim 8, it is characterised in that：The production line is also wrapped
DC voltage processing unit is included, the DC voltage processing unit is used for the aluminium foil that will be handled through the dc source constant-voltage equipment constant pressure
Through adding DC voltage to handle 2 minutes in the electrolyte containing phosphate cpd.
Priority Applications (1)
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| 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 |
| 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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| JP2009019248A (en) * | 2007-07-13 | 2009-01-29 | Sumitomo Light Metal Ind Ltd | Aluminum foil material for electrode of electrolytic capacitor |
| CN101651048A (en) * | 2009-06-23 | 2010-02-17 | 吴江飞乐天和电子材料有限公司 | Formation method of electrode foil of aluminum electrolytic capacitor |
| CN202003850U (en) * | 2011-05-09 | 2011-10-05 | 四川立业电子有限公司 | Formation device for formed foil |
| CN204102723U (en) * | 2014-08-20 | 2015-01-14 | 吴江飞乐天和电子材料有限公司 | A kind of process units of aluminum electrolysis capacitor formed foil and production line thereof |
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| JP2009019248A (en) * | 2007-07-13 | 2009-01-29 | Sumitomo Light Metal Ind Ltd | Aluminum foil material for electrode of electrolytic capacitor |
| CN101651048A (en) * | 2009-06-23 | 2010-02-17 | 吴江飞乐天和电子材料有限公司 | Formation method of electrode foil of aluminum electrolytic capacitor |
| CN202003850U (en) * | 2011-05-09 | 2011-10-05 | 四川立业电子有限公司 | Formation device for formed foil |
| CN204102723U (en) * | 2014-08-20 | 2015-01-14 | 吴江飞乐天和电子材料有限公司 | A kind of process units of aluminum electrolysis capacitor formed foil and production line thereof |
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