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DE837317C - Process for the production of copper foils for rectifier elements - Google Patents

Process for the production of copper foils for rectifier elements

Info

Publication number
DE837317C
DE837317C DEP23305D DEP0023305D DE837317C DE 837317 C DE837317 C DE 837317C DE P23305 D DEP23305 D DE P23305D DE P0023305 D DEP0023305 D DE P0023305D DE 837317 C DE837317 C DE 837317C
Authority
DE
Germany
Prior art keywords
production
copper
rectifier elements
copper foils
indicates
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
DEP23305D
Other languages
German (de)
Inventor
Roger Doucot
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.)
Compagnie des Freins et Signaux Westinghouse SA
Original Assignee
Compagnie des Freins et Signaux Westinghouse SA
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 Compagnie des Freins et Signaux Westinghouse SA filed Critical Compagnie des Freins et Signaux Westinghouse SA
Application granted granted Critical
Publication of DE837317C publication Critical patent/DE837317C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Conductive Materials (AREA)

Description

Verfahren zur Herstellung von Kupferfolien für Gleichrichterelemente Um gute sogenannteT@rockengleichrichterelemente Boni Typus Kupfer-Kupferoxyd herzustellen, ist eine besondere Art von Kupfer erforderlich, dessen mechanische und physikalische Eigenschaften von (len ;uigewarrdten metallurgischen Herstellungsver- tälireii abliiingen. \"on 1?influß auf die Eigenschaf- ten sind besonders jene Verfahren, die am Schluß des Herstellungsprozesses angewandt werden. Von ganz hervorragender Widhtigkeit sind dabei die \\':ilznietluxieii zur Herstellung von Kupferstreifen, ;aus dellen die zur Herstellung der Gleichrichter- eleineiite (lieneii(ieri Folien ausgeschnitten werden. Die vorliegende Erfindung hat nun ein Verfahren zum Gegenstand. \\-(:)nach man das Material vor lern letzten Walzen noch einmal in einer nicht ()xN-cliereti(len Atmosphäre blankglüht. Dies erfolgt vorztigsweise in einem mit reduzierendem Gas oder mit \\ asserdarnpf gefüllten Ofen. Die letzten Walzengänge, ganz besonders den allerletzten Walzengang, nimmt man zwischen Walzen vor, welche die Herstellung einer Hochglanz,kupferober- fläche gewährleisten. Einer der besonderen durch das erfindungs- gemäßeVerfähren erreichtenVorteile liegt im Fort- fall des Beizbades oder einer mechanischen, das Bad ersetzenden Behandlung, durch welche bisher vor (lern letzten Walzengang die im Laufe der in einer oxydierenden Atmosphäre stattgefundenen Wärmel)ehandlung gebildeten Oxyde beseitigt -,%-erden mußten. Außerdem erscheint es als wahr- scheinlich, daß bei Behandlung mit einem Beiz- bade gewisse Verunreinigungen aus dem Bad in die Kupfermasse eindringen, welche die Herstellung guter Halbleiter beeinträchtigen, insbesondere dann, wenn man sie als Gleichrichter verwenden will. Bei dem erfindungsgemäßen Verfahren werden diese Nachteile vermieden, und man erhält Kupfer, (las eine vollkommen reine Oberfläche besitzt so- wie sämtliche für die Verwendung des Kupfers zur 1 ierstellung von Zellen mit asymmetrischer Leit- fähigkeit vom Typus Kupfer-Kupferoxyd erforder- lichen Eigenschaften aufweist. Die hach (lein erfindungsgemäßen Verfahren er- Iialtenen Kupferwalzstücke konnten bisher durch anrdere Verfahren nicht in der gleichen Reinheit und mit den gleich guten Eigenschaften hergestellt werden. Process for the production of copper foils for rectifier elements To good so-called T @ rock rectifier elements Boni type copper-copper oxide to produce is a special kind of copper is required, whose mechanical and physical properties of (len; retained metallurgical manufac- tälireii abliiingen. \ "on 1? Influence on the property thes are especially those procedures that take place at the end of the manufacturing process. from The most outstanding dedication are those \\ ': ilznietluxieii for making copper strips, ; from dents that were used to manufacture the rectifier eleineiite (lieneii (ieri foils are cut out. The present invention now has a method to the subject. \\ - (:) after looking at the material do not learn last reels all over again in one () xN-cliereti (len atmosphere brightly annealed. This is done preferably in a reducing gas or oven filled with \\ asserdarnpf. The last Roller gears, especially the very last one Roller gear, one takes between rollers, which the production of a high-gloss, copper-top ensure space. One of the special ones due to the inventive The advantages achieved in accordance with the case of the pickling bath or a mechanical one that Bath replacing treatment, by what so far before (learn the last roller gear in the course of the in took place in an oxidizing atmosphere Oxides formed by heat treatment are eliminated -,% - had to earth. Besides, it appears to be true apparently that when treated with a pickling agent bathe certain impurities from the bathroom in the Penetrate copper mass, which is the manufacture good semiconductor affect, in particular then if you can use them as rectifiers want. In the method according to the invention these disadvantages are avoided, and one obtains copper, (so it has a completely clean surface like all for the use of copper 1 production of cells with asymmetrical conduction ability of the type copper-copper oxide required. has union properties. The method according to the invention Old copper rolled pieces have so far been able to pass through other processes are not in the same purity and manufactured with the same good properties will.

Claims (1)

PATENTANSPRÜCHE: I. .erfahren zur Herstellung von Kupfer- folien für Gleichrichterelemente, dadurch ge-
kennzeichnet, daß vorgewalzte Kupferstreifen in einer iiic'ht oxydierenden Atmosphäre ge- glüht und dann zwischen Walzen fertig ver- formt werden, die auf der Oberfläche des Walz- gutes Hochglanz erzeugen. z. Verfahren nach Anspruch r, dadurch ge- kennzeichnet,@daß dieGliihung in reduzierendem Gas durchgeführt wird. 3. Verfahren nach Anspruch i, dadurch ge- kennzeichnet, daß die Glühung in Wasserdampf durchgeführt wird.
Angezogene Patentschriften: Deutsche Patentschrift N r. d99 936.
PATENT CLAIMS: I. .experienced in the production of copper foils for rectifier elements, thereby
indicates that pre-rolled copper strips in a non-oxidizing atmosphere glows and then finished between rollers formed on the surface of the rolling produce a good high gloss. z. Method according to claim r, characterized indicates that the equation in reducing Gas is carried out. 3. The method according to claim i, characterized in that indicates that the annealing in water vapor is carried out.
Applied patents: German Patent No. d99 936.
DEP23305D 1947-05-21 1948-12-02 Process for the production of copper foils for rectifier elements Expired DE837317C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR837317X 1947-05-21

Publications (1)

Publication Number Publication Date
DE837317C true DE837317C (en) 1952-04-21

Family

ID=9298540

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP23305D Expired DE837317C (en) 1947-05-21 1948-12-02 Process for the production of copper foils for rectifier elements

Country Status (1)

Country Link
DE (1) DE837317C (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE499936C (en) * 1926-09-09 1930-06-14 Metallgesellschaft Ag Bright annealing of metals

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE499936C (en) * 1926-09-09 1930-06-14 Metallgesellschaft Ag Bright annealing of metals

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