DE974207C - Process for the formation of traveling baths of electrode foils for electrolytic capacitors, preferably made of aluminum - Google Patents

Process for the formation of traveling baths of electrode foils for electrolytic capacitors, preferably made of aluminum

Info

Publication number
DE974207C
DE974207C DES16094D DES0016094D DE974207C DE 974207 C DE974207 C DE 974207C DE S16094 D DES16094 D DE S16094D DE S0016094 D DES0016094 D DE S0016094D DE 974207 C DE974207 C DE 974207C
Authority
DE
Germany
Prior art keywords
formation
aluminum
electrolytic capacitors
preferably made
traveling
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.)
Expired
Application number
DES16094D
Other languages
German (de)
Inventor
Werner Dr-Ing Herrmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DES16094D priority Critical patent/DE974207C/en
Application granted granted Critical
Publication of DE974207C publication Critical patent/DE974207C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/0029—Processes of manufacture
    • H01G9/0032—Processes of manufacture formation of the dielectric layer

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Description

Verfahren zur Wanderbad-Formierung von vorzugsweise aus Aluminium bestehenden Elektrodenfolien für elektrolytische Kondensatoren Aluminiumfolien für elektrolytische Kondensatoren werden bekanntlich in verschiedenen Bädern im sogenannten Wanderbadverfahren vorformiert, wobei das Bad, in welchem hauptsächlich die Bildung der dielektrischen Schicht erfolgt, aus einer Lösung von Borsäure und Borax in destilliertem Wasser besteht. Während es bekannt ist, als Betriebselektrolyt auch gesättigte oder sogar übersättigte Borsäurelösung zu verwenden, werden für die Vorformierung im Wanderbadverfahren im allgemeinen Lösungen von etwa 18 bis 2o °/o Borsäure und o, i °/o Borax verwendet. Das Bad arbeitet bei Siedetemperatur, so daß, abgesehen von den Borsäureverlusten durch den eigentlichen Formiervorgang, ein großer Verbrauch an destilliertem Wasser sowie auch ein Verlust an den gelösten Substanzen durch mitgerissene und herausgespritzte Anteile entsteht. Um die Formierungsbedingungen stets konstant zu halten, ist es notwendig, das Bad durch Analysen genau zu überwachen. Es stellte sich heraus, daß eine Überwachung des Bades mit direkt anzeigenden Instrumenten etwa auf der Basis von Leitfähigkeits- und pH-Messungen technisch nicht ohne weiteres durchführbar ist. Daher mußten stets zeitraubende und teure chemische Analysen durchgeführt werden.Method for forming a traveling bath, preferably made of aluminum existing electrode foils for electrolytic capacitors aluminum foils for electrolytic capacitors are known in various baths in the so-called Wandering bath process preformed, the bath in which mainly the formation The dielectric layer is made from a solution of boric acid and borax in distilled Water exists. While it is known as operating electrolyte, it is also saturated or Even using supersaturated boric acid solution will be necessary for preforming in the Traveling bath processes in general solutions of about 18 to 20% boric acid and o, i ° / o borax used. The bath operates at the boiling point, so that apart from the boric acid losses due to the actual forming process, a large consumption of distilled water as well as a loss of the dissolved substances entrained and splashed out parts arise. To the formation conditions To keep it constant at all times, it is necessary to carefully monitor the bath by means of analyzes. It turned out that a monitoring of the bath with direct reading Instruments On the basis of conductivity and pH measurements, for example, this is technically not straightforward is feasible. Therefore, time-consuming and expensive chemical analyzes always had to be carried out will.

Es wird daher ein Verfahren zur Wanderbadformierung von vorzugsweise aus Aluminium bestehenden Elektrodenfolien für elektrolytische Kondensatoren, bei dem die Formierungsbedingungen während des Betriebes möglichst konstant gehalten werden, vorgeschlagen, bei dem das Formierungsbad bei Siedetemperatur betrieben wird und bei dieser Temperatur als eine gesättigte Lösung von Borsäure mit Bodenkörper aus Borsäure, gegebenenfalls mit geringem Zusatz von Borax, etwa o,1 °/o, benutzt wird. Es ist dann nur noch notwendig, durch Analysen lediglich den Boraxgehalt zu kontrollieren. Da der Boraxgehalt sich relativ wenig ändert, auch nicht von weittragendem Einfluß ist, wird die analytische Arbeit durch die vorgeschlagene Erfindung bedeutend herabgesetzt.It is therefore preferred to use a method for wandering pool formation made of aluminum electrode foils for electrolytic capacitors which kept the formation conditions as constant as possible during operation are proposed, in which the formation bath is operated at boiling temperature becomes and at this temperature as a saturated solution of boric acid with sediment from boric acid, optionally with a small addition of borax, about 0.1%, used will. It is then only necessary to only determine the borax content through analyzes check. Since the borax content changes relatively little, not even by far Is influence, the analytical work becomes significant by the proposed invention degraded.

Claims (1)

PATENTANSPRUCH: Verfahren zur Wanderbadformierung von vorzugsweise aus Aluminium bestehenden Elektrodenfolien für elektrolytische Kondensatoren, bei dem die Formierungsbedingungen während des Betriebes möglichst konstant gehalten werden, dadurch gekennzeichnet, daß das Formierungsbad bei Siedetemperatur betrieben und daß es bei dieser Temperatur als eine gesättigte Lösung von Borsäure mit Bodenkörper aus Borsäure, gegebenenfalls mit geringem Zusatz von Borax, etwa o,1 °/a, benutzt wird. In Betracht gezogene Druckschriften USA.-Patentschriften Nr. 1 270 78q., 1 710 073, 1976 7oo, z 174 844 2193 711; Buch von Günther Schulze und Betz, Elektrolyth-Kondensatoren, 1937, S. 1o6/=07.PATENT CLAIM: A method for moving bath formation of electrode foils, preferably made of aluminum, for electrolytic capacitors, in which the formation conditions are kept as constant as possible during operation, characterized in that the formation bath is operated at boiling temperature and that at this temperature it is a saturated solution of boric acid with sediment from boric acid, optionally with a small addition of borax, about 0.1% / a, is used. .. Contemplated publications USA. Patents No. 1 270 78q, 1,710,073, 1,976 7oo, for 174 844 2193 711; Book by Günther Schulze and Betz, Elektrolyth capacitors, 1937, p. 1o6 / = 07.
DES16094D 1942-06-27 1942-06-27 Process for the formation of traveling baths of electrode foils for electrolytic capacitors, preferably made of aluminum Expired DE974207C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES16094D DE974207C (en) 1942-06-27 1942-06-27 Process for the formation of traveling baths of electrode foils for electrolytic capacitors, preferably made of aluminum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES16094D DE974207C (en) 1942-06-27 1942-06-27 Process for the formation of traveling baths of electrode foils for electrolytic capacitors, preferably made of aluminum

Publications (1)

Publication Number Publication Date
DE974207C true DE974207C (en) 1960-10-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DES16094D Expired DE974207C (en) 1942-06-27 1942-06-27 Process for the formation of traveling baths of electrode foils for electrolytic capacitors, preferably made of aluminum

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1014721B (en) * 1953-12-05 1957-08-29 Algot Viebke Locking device for elevator shaft doors

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1270784A (en) * 1914-10-02 1918-07-02 Westinghouse Electric & Mfg Co Electrolyte for electrolytic cells, such as lightning-arresters, condensers, and the like.
US1710073A (en) * 1927-03-21 1929-04-23 Ruben Samuel Electrical condenser
US1976700A (en) * 1931-10-31 1934-10-09 Ergon Res Lab Inc Electrolyte for use with filmed electrodes
US2174841A (en) * 1936-05-08 1939-10-03 Sprague Specialties Co Electrolytic device
US2193711A (en) * 1937-12-14 1940-03-12 Sprague Specialties Co Electrolytic device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1270784A (en) * 1914-10-02 1918-07-02 Westinghouse Electric & Mfg Co Electrolyte for electrolytic cells, such as lightning-arresters, condensers, and the like.
US1710073A (en) * 1927-03-21 1929-04-23 Ruben Samuel Electrical condenser
US1976700A (en) * 1931-10-31 1934-10-09 Ergon Res Lab Inc Electrolyte for use with filmed electrodes
US2174841A (en) * 1936-05-08 1939-10-03 Sprague Specialties Co Electrolytic device
US2193711A (en) * 1937-12-14 1940-03-12 Sprague Specialties Co Electrolytic device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1014721B (en) * 1953-12-05 1957-08-29 Algot Viebke Locking device for elevator shaft doors

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