DE2434154A1 - PROCESS FOR CONTINUOUS DETERMINATION OF THE QUALITY OF ALUMINUM FOILS FORMED IN WALKING BAEDERS - Google Patents
PROCESS FOR CONTINUOUS DETERMINATION OF THE QUALITY OF ALUMINUM FOILS FORMED IN WALKING BAEDERSInfo
- Publication number
- DE2434154A1 DE2434154A1 DE19742434154 DE2434154A DE2434154A1 DE 2434154 A1 DE2434154 A1 DE 2434154A1 DE 19742434154 DE19742434154 DE 19742434154 DE 2434154 A DE2434154 A DE 2434154A DE 2434154 A1 DE2434154 A1 DE 2434154A1
- Authority
- DE
- Germany
- Prior art keywords
- quality
- aluminum foils
- walking
- continuous determination
- baeders
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000011888 foil Substances 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 6
- 229910052782 aluminium Inorganic materials 0.000 title claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000007306 turnover Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
Verfahren zur kontinuierlichen Bestimmung der Qualität von in Wanderbädern formierten Aluminiumfolien·Process for the continuous determination of the quality of aluminum foils formed in walking baths
Die Erfindung betrifft ein Verfahren zur kontinuierlichen Bestimmung der Qualität von in Wanderbädern formierten Aluminiumfolien für Elektrolytkondensatoren,,The invention relates to a method for continuous determination the quality of aluminum foils for electrolytic capacitors formed in hiking pools,
Von der Güte der im Formierprozeß auf Aluminiumfolien aufgebrachten Oxidschicht, welche als Dielektrikum im Elektrolytkondensator dient, sind die elektrischen Werte des Kondensators in großem Maße abhängig. Die Formierung geschieht im allgemeinen in Wanderbädern, wobei die Folie in mehreren Schleifen durch Bäder mit einem Formierelektrolyten befördert wird; durch anodische Oxydation wird dabei die Oxidschicht auf die Folie aufgebracht.The quality of those applied to aluminum foils in the forming process Oxide layer, which serves as a dielectric in the electrolytic capacitor, are the electrical values of the capacitor to a large extent addicted. The formation is generally done in traveling baths, the film in several loops through baths with one Forming electrolyte is conveyed; The oxide layer is applied to the foil by anodic oxidation.
Als schwierig hat es sich herausgestellt, daß über die Güte der Dielektrikumsschicht während des Formierprozesses keine Aussage gemacht werden kann, sondern daß ihre Gütebestimmung erst durch nachfolgende Messungen vorgenommen werden kann. Es ist zwar möglich, aus den Formierdaten und insbesondere aus dem Reststrom der letzten Formierschleife des Wanderbades Aussagen über die Qualität der Folie zu erhalten, jedoch lassen sich damit in der Regel nur sehr grobe Qualitäts-Abweichungen erkennen. Es besteht also die Gefahr, daß bei unzureichender Qualität unter Umständen die ganze Rolle mit der ca. 1000 m langen Anodenfolie verworfen werden muß·It has proven to be difficult that no statement can be made about the quality of the dielectric layer during the forming process can be made, but that their quality can only be determined by subsequent measurements. It is possible from the formation data and in particular from the residual flow of the last formation loop of the hiking pool, statements about the quality of the film, but usually only very rough quality deviations can be recognized. So there is the There is a risk that if the quality is insufficient, the entire roll with the approx. 1000 m long anode foil may have to be discarded.
VPA 9/140/3013 Sac/PJVPA 9/140/3013 Sac / PJ
-2--2-
509886/0548509886/0548
Aufgabe der Erfindung ist es, ein Verfahren anzugeben, mit dessen Hilfe die Qualität von in Wanderbädern formierten Aluminiumfolien kontinuierlich bestimmt werden kann.The object of the invention is to provide a method with which Help the quality of aluminum foils formed in hiking pools can be continuously determined.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Folie nach beendeter Formierung eine separate Schleife im Formierwanderbad durchläuft und daß dabei der Ladungsumsatz bei 30 bis 35 % der Endformierspannung bestimmt wird.This object is achieved according to the invention in that the film runs through a separate loop in the moving forming bath after forming is complete and the charge conversion is determined at 30 to 35% of the final forming voltage.
Der Erfindung liegt die Erkenntnis zugrunde, daß Folien mit
schlechten Formiertest- und Hydratationseigenschaften, welche im fertigen Elektrolytkondensator zu hohe Restströme und schlechte
Verlustwinkel zur Folge haben, eine Leitfähigkeitsanomalie aufweisen, wobei bei- einer Spannung, die ungefähr ein Drittel der
Endformierspannung beträgt, ein bis zu zwei Zehnerpotenzen größerer Strom fließt als in Folien mit guter Qualität der Dielektrikumsschicht.
The invention is based on the knowledge that films with
poor formation test and hydration properties, which in the finished electrolytic capacitor too high residual currents and bad
Loss angle result in a conductivity anomaly, with a voltage that is approximately one third of the
The final forming voltage is up to two powers of ten higher current flows than in films with a good dielectric layer quality.
Durch die erfindungsgemäße Einführung einer separaten Formierschleife
nach der abgeschlossenen Formierung im Formierwanderbad unter gleichzeitiger Bestimmung des Ladungsumsatzes bei ungefähr
einem Drittel der Endformierspannung läßt sich eine qualitativ
unzureichend formierte Anodenfolie sofort erkennen und der Formierprozeß kann entsprechend geregelt werden.By introducing a separate forming loop according to the invention after the formation in the migrating forming bath with simultaneous determination of the charge conversion at approximately one third of the final forming voltage, a qualitative
Recognize inadequately formed anode foil immediately and the forming process can be regulated accordingly.
In der Figur ist der spezifische Ladungsumsatz Q in mC/cm in Abhängigkeit von der Meßspannung UM für qualitativ unzureichend formierte Anodenfolie angegeben. Als Parameter ist an den verschiedenen Kurven die Endformierspannung angegeben. Der Figur ist zu entnehmen, daß der maximale Ladungsumsatz bei ungefähr einem Drittel der Endformierspannung auftritt. Der Ladungsumsatz für qualitativ hochwertige Anodenfolien ist so gering, daß er in der Figur nicht angegeben werden kann (ca. 0,1 mC/cm Folie).In the figure, the specific charge conversion Q is given in mC / cm as a function of the measurement voltage U M for qualitatively inadequately formed anode foil. The final forming voltage is given as a parameter on the various curves. It can be seen from the figure that the maximum charge conversion occurs at approximately one third of the final forming voltage. The charge conversion for high quality anode foils is so low that it cannot be indicated in the figure (approx. 0.1 mC / cm foil).
VPA 9/140/3013 -3-VPA 9/140/3013 -3-
5 09886/05485 09886/0548
Das erfindungsgemäße Verfahren erlaubt eine sehr empfindliche Bestimmung der Güte von Anodenfolien für Elektrolytkondensatoren, da der Ladungsumsatz bei nicht genügend formierter Folie mindestens bis zu drei Zehnerpotenzen ansteigt«, Das erfindungsgemäße Verfahren gestattet es, Qualitätsmängel während der Formierung sofort zu erkennen und damit die Produktion von qualitativ unzureichender Folie zu unterbinden.The method according to the invention allows a very sensitive determination of the quality of anode foils for electrolytic capacitors, since the charge conversion increases at least up to three powers of ten if the film is not sufficiently formed «, the invention Process allows quality defects to be recognized immediately during formation and thus the production of inadequate quality To prevent foil.
1 Patentanspruch
1 Figur.1 claim
1 figure.
VPA 9/140/3013VPA 9/140/3013
509886/0 5 AS509886/0 5 AS
Claims (1)
30 bis -35 % der Sndfοraierspannung bestimmt wird.1. Process for the continuous determination of the quality of aluminum foil formed in WanderTbädem !! for electrolytic capacitor ^ characterized in that the film has a separate loop in the form after formation. mierwanderbad runs through and that the charge turnover at
30 to -35 % of the sndfοraier voltage is determined.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742434154 DE2434154B2 (en) | 1974-07-16 | 1974-07-16 | PROCESS FOR CONTINUOUS DETERMINATION OF THE QUALITY OF AN ALUMINUM FOIL FOR ELECTROLYTE CAPACITORS FORMED IN WALKING BAEDERS |
| FR7521381A FR2279212A1 (en) | 1974-07-16 | 1975-07-08 | Capacitor aluminium foil quality checking - uses separate loop for activated foil in processing bath with activating voltage check |
| IT2530475A IT1039203B (en) | 1974-07-16 | 1975-07-11 | IMPROVEMENT IN THE PRODUCTION OF ALUMINUM SHEETS FOR ELECTRONIC CONDENSERS CONSISTING OF CONTINUOUSLY DETERMINING THE QUALITY OF ALUMINUM SHEETS FORMED IN TRANSPOSITION BATHS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742434154 DE2434154B2 (en) | 1974-07-16 | 1974-07-16 | PROCESS FOR CONTINUOUS DETERMINATION OF THE QUALITY OF AN ALUMINUM FOIL FOR ELECTROLYTE CAPACITORS FORMED IN WALKING BAEDERS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2434154A1 true DE2434154A1 (en) | 1976-02-05 |
| DE2434154B2 DE2434154B2 (en) | 1977-07-07 |
Family
ID=5920697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19742434154 Ceased DE2434154B2 (en) | 1974-07-16 | 1974-07-16 | PROCESS FOR CONTINUOUS DETERMINATION OF THE QUALITY OF AN ALUMINUM FOIL FOR ELECTROLYTE CAPACITORS FORMED IN WALKING BAEDERS |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2434154B2 (en) |
| FR (1) | FR2279212A1 (en) |
| IT (1) | IT1039203B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8201558A (en) * | 1982-04-14 | 1983-11-01 | Philips Nv | APPARATUS FOR CONTINUOUS MEASURING THE CAPACITY OF FOIL FOR ELECTROLYT CONDENSERS. |
-
1974
- 1974-07-16 DE DE19742434154 patent/DE2434154B2/en not_active Ceased
-
1975
- 1975-07-08 FR FR7521381A patent/FR2279212A1/en active Granted
- 1975-07-11 IT IT2530475A patent/IT1039203B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DE2434154B2 (en) | 1977-07-07 |
| FR2279212A1 (en) | 1976-02-13 |
| FR2279212B3 (en) | 1979-04-27 |
| IT1039203B (en) | 1979-12-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BHV | Refusal |