EP0294358B1 - Electrode für eine Elektrolysezelle - Google Patents

Electrode für eine Elektrolysezelle Download PDF

Info

Publication number
EP0294358B1
EP0294358B1 EP19880870101 EP88870101A EP0294358B1 EP 0294358 B1 EP0294358 B1 EP 0294358B1 EP 19880870101 EP19880870101 EP 19880870101 EP 88870101 A EP88870101 A EP 88870101A EP 0294358 B1 EP0294358 B1 EP 0294358B1
Authority
EP
European Patent Office
Prior art keywords
electrolyte
supply
channels
removal
channel
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 - Lifetime
Application number
EP19880870101
Other languages
English (en)
French (fr)
Other versions
EP0294358A2 (de
EP0294358A3 (en
Inventor
Robert Pirlet
Roger Franssen
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.)
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
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 Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Publication of EP0294358A2 publication Critical patent/EP0294358A2/de
Publication of EP0294358A3 publication Critical patent/EP0294358A3/fr
Application granted granted Critical
Publication of EP0294358B1 publication Critical patent/EP0294358B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/10—Electrodes, e.g. composition, counter electrode
    • C25D17/12—Shape or form

Definitions

  • the present invention relates to an electrode intended for an electrolysis cell of the type used in particular for carrying out the deposition of a metallic coating, adherent or detachable, on a mobile substrate.
  • the present invention provides an electrode for an electrolysis cell, in particular an anode, which makes it possible to remedy the aforementioned drawback and which therefore ensures the formation of a thick coating. uniform, both in the longitudinal and transverse directions.
  • This improvement is achieved, thanks to the invention, without adversely affecting the advantageous aspects of the known electrode, in particular the short path of the electrolyte between the anode and the cathode.
  • an electrode for an electrolysis cell intended for depositing a metallic coating on a mobile substrate which comprises an electrode body comprising means for supplying electric current and having at least one profiled surface corresponding to the surface of said substrate, said electrode body having a plurality of narrow parallel slots which open into said profiled surface and which are connected to transverse channels with respect to the direction of movement of the substrate and connected alternately to supply means, respectively for discharging the electrolyte, is characterized in that said transverse channels are delimited by profiles arranged parallel l 'to one another and at a certain distance from each other, in that said profiles have at least one profiled face and in that said profiles are individually fixed to a support so that said profiled faces constitute said profiled surface of the electrode body and that the distance between two profiled faces constitutes the width of one of said parallel narrow slots.
  • seals are provided between the profiles and the support, so as to prevent any contact between the means for fixing the profiles to said support and the electrolyte.
  • said sections are of type I and they are separated from said support by means of rectilinear joints placed transversely.
  • each profile separates a supply channel and an electrolyte discharge channel, and the rectilinear seals contribute to this separation by preventing any passage of electrolyte between a profile and the support. .
  • said profiles are of the U type and they are provided, at the end of at least one of the wings, with a sole bearing said profiled face.
  • the internal volume of a U-shaped profile preferably constitutes a supply channel, while the volume comprised between two profiles forms a channel for discharging the electrolyte. Only the mechanical fixing means and / or electrical connection of the profiles are here surrounded by seals, which are thus only subjected to the low pressure prevailing in the electrolyte discharge channels. It would obviously not go beyond the scope of the invention to provide the supply channels between the profiles and the evacuation channels inside these profiles.
  • the electrode may have different means to guarantee the formation of a deposit of uniform thickness along the width of the substrate.
  • the present invention proposes to modify the geometry of the slots and / or supply channels, in order to minimize the effects of this increase in the pressure of the electrolyte.
  • an electrolyte supply channel has a variable cross section in the direction of its closed end. Such a variation in section makes it possible to compensate for the increase in pressure and consequently to eliminate the unfavorable effects.
  • Another embodiment consists in varying the width of the feed slots towards the closed end of the corresponding feed channel. Such a variation in width makes it possible to standardize the speed of the electrolyte, and consequently its turbulence, along the width of the substrate.
  • the surface of the body of the anode is profiled transversely so that the deposition interval corresponding to at least one supply channel has a variable thickness in the direction of the closed end of this channel.
  • a variation in thickness also has the effect of modifying the passage section and thus limiting the increase in the speed and the turbulence of the electrolyte along the width of the substrate.
  • the channels are grouped in pairs, each pair comprising a supply channel and an electrolyte discharge channel, the two channels of the same pair are closed at one of their neighboring ends and are connected at their other end to means for supplying or discharging the electrolyte, respectively, and said pairs of channels are arranged head to tail, the closed ends of the channels of any one of said pairs being close to the ends open channels of said adjacent pair or pairs.
  • each channel is connected by its two ends to means for supplying, respectively discharging, the electrolyte, the supply channels and the discharge channels alternating successively in the longitudinal direction of the 'electrode.
  • each channel is closed, and the means for supplying, respectively discharging, the electrolyte are connected at several points distributed transversely relative to the substrate, along the length of the respective channels.
  • an advantageous arrangement consists in ensuring a supply under a different pressure in the region of the edges of the substrate, in order to compensate for a variation in the thickness of the deposit due to the proximity of the edges of said substrate.
  • said means for supplying, respectively discharging, the electrolyte comprise a plurality of identical longitudinal elements which each have their own mechanical fixing means and their own electrical connection means. Such elements are juxtaposed in the transverse direction of the substrate, in a number corresponding to the largest width of substrate to be treated in the installation.
  • each of said elements advantageously consists of two elongated boxes secured by a side wall, one of said boxes being connected to an electrolyte supply pipe while the other box is connected to a discharge pipe for the electrolyte; said boxes are arranged substantially horizontally under the support carrying said transverse profiles.
  • the supply box is provided, in its upper face, with openings putting it in communication with the supply channels, while the discharge box is provided, in its upper face, with holes putting it in communication with the drainage channels.
  • Each longitudinal element is individually fixed to the support on which the profiles are mounted. All of said elements can itself constitute the support; in this case, the longitudinal elements are fixed directly to the underside of said profiles, with the interposition of the seals indicated above.
  • Each of said longitudinal elements has its own supply and its own electrolyte discharge; it therefore makes it possible to modulate or possibly interrupt this supply as a function of the width of the substrate, in particular in the elements corresponding to the edges of the substrate.
  • the connection of the supply lines is advantageously carried over to the ends of the said elements, so as to facilitate the connection of the evacuation lines to the lower part of the said elements.
  • Each of said longitudinal elements also has its own power supply, which is advantageously constituted by a longitudinal conductive plate disposed between the two boxes constituting said element.
  • This plate is preferably connected at its ends to a source of electric current, which also contributes to clearing the space located under said element.
  • Such a plate also plays a role of stiffener of the longitudinal element.
  • the power supply can also be modulated independently for each element.
  • anode portion generally designated by the reference numeral 1, composed of several sections in I 2. These sections are arranged parallel to each other and transversely to the substrate (not shown) whose longitudinal dimension, or the direction of movement if it is mobile, is symbolized by the arrow A.
  • the sections 2 are attached to a support 3 by fixing means not shown in Figure 1, with interposition of seals 4 rectilinear and arranged transversely to the substrate.
  • Figure 2 shows a vertical section along line II of Figure 1, through the anode portion 1 consisting of parallel sections 2. These sections are separated by a distance "e” which constitutes the width of a slot d supply, respectively discharge, of the electrolyte. This distance “e” can also be different depending on whether it corresponds to a feed slot or to a discharge slot.
  • the profiles 2 are individually attached to a support 3 by fixing means, symbolized here by nuts 5, which will be described in detail below. These fixing means can also be used to ensure the electrical supply of the anode.
  • Seals 4 are arranged between the rear face 6 of the profiles and the support 3.
  • the profiles have at least one face 7, called the front face, the layout of which corresponds to the shape of the surface of the substrate, which surface is here symbolized by the dashed line 8.
  • the volumes between the sections alternately constitute supply channels 9 and discharge 10 of the electrolyte, indicated respectively by arrows B and C.
  • the seals 4 prevent communication on the one hand of electrolyte from a supply channel 9 to a neighboring discharge channel 10 and on the other hand any contact of the electrolyte with the means for fixing and / or electrical supply of the profiles 2. These means are not therefore not exposed to corrosion by the electrolyte.
  • FIG 3 there is shown a part of an electrode body consisting of U-shaped profiles, according to an interesting implementation of the invention. These sections, marked 11, are fixed to a support 3, with the interposition of seals 4, by fixing means 13 which will be described in detail below.
  • At the end of the wings of the profiles 11 are mounted plates 12 parallel to the substrate 8, so as to leave between them a slot of width e or e ′, respectively inside a profile or between two neighboring profiles. These widths e, e ′ can be equal or different.
  • the interior space of each profile 11 constitutes a supply channel 9 where the electrolyte arrives at a high pressure (arrow B); in this channel, the electrolyte is not in contact with any seal.
  • the discharge channels are formed by the spaces 10 between the sections 11 and in which the electrolyte circulates under low pressure (arrow C).
  • the seals 4 are in contact only with the electrolyte under low pressure; they protect the fastening means against any contact with the electrolyte.
  • the support 3 may constitute the bottom of a supply collecting basin, respectively for discharging the electrolyte, a basin which is not shown in these figures.
  • the fixing means symbolically designated by 5 in FIG. 2 and by 13 in FIG. 3 ensure both the individual fixing of the sections 2, 11 to the support 3 and the electrical connection of these sections to an appropriate current source not shown.
  • FIG. 4 illustrates a particular embodiment of these fixing and connection means, which on the one hand ensures an electrical contact with low resistance and an arrival of current to the supply channel and which on the other hand allows individual disassembly easy of each profile by simple loosening of nuts located outside the electrolyte circuit.
  • Several fixing means of this type are provided distributed over the length of the profiles.
  • FIG. 4 shows, by way of example, the mechanical fixing and the electrical connection of a profile 2 to a support 3 with interposition of seals 4.
  • a threaded rod 13 passes through the support 3 and is screwed into the base profile 2; it is surrounded by the seals 4 and is therefore not exposed to contact with the electrolyte.
  • On this threaded rod are then mounted a washer 14, a conductor 15, such as a flat cable or a copper bar, a second washer 16 then a nut 17 which provides the tightening required for the mechanical fixing and the electrical connection.
  • a flexible flat cable which gives the electrode a certain freedom of movement relative to the source of electric current, generally fixed.
  • FIG. 5 illustrates the variation of three geometric characteristics of the electrode, namely (a) the width of a channel, (b) the width of a slot and (c) the thickness of the deposition interval. In each case, it presents an elevation view, which is a vertical section along line B-B, and a plan view, which is a horizontal section along line C-C.
  • FIG. 6 illustrates various possibilities for connecting the channels of the electrode to the supply means, respectively the discharge of the electrolyte.
  • FIG. 6a shows, in plan, a set of four successive channels 18, 19, 20, 21, closed at one of their ends, and grouped in pairs arranged head to tail.
  • the lines such as 22 drawn inside these channels symbolize the supply and discharge slots respectively.
  • Each pair of channels comprises a feed channel and a discharge channel, indicated respectively by the incoming arrows D and outgoing E.
  • the inlet of the feed channel of a pair is adjacent to the outlet of the drain of the same pair while it is adjacent to the end closed of the drainage channel of the neighboring pair.
  • a similar arrangement prevails for the evacuation channel of a pair with respect to the neighboring supply channels.
  • the channels do not have a closed end and they are connected alternately and by their two ends to supply means (arrows D), respectively of evacuation (arrows E) of the electrolyte.
  • FIG. 6c shows in elevation, two successive channels connected to supply means (arrows D), respectively of evacuation (arrows E), of the electrolyte.
  • the connection points are appropriately distributed along the width of the substrate to obtain the desired distribution of the speed of the electrolyte and therefore of the thickness of the deposit.
  • FIG. 6d constitutes a combination of the two preceding solutions (FIGS. 6b and 6c), which makes it possible to modulate the flow rate of the electrolyte to take account in particular of a possible influence of an edge effect on the regularity of the thickness of the deposit in the vicinity of the edges of the substrate.
  • FIG. 7 illustrates, in cross section, a longitudinal element constituting a particular embodiment of the invention.
  • Said element consists of two elongated boxes 23, 24, assembled by welding to the underside of the support 3.
  • the two boxes are secured by a side wall, by means of a conductive plate 25, this plate itself being welded to the support 3 to ensure good electrical contact.
  • the box 23 is the discharge box which is provided with a line 26 for discharging the electrolyte.
  • the supply of electrolyte to the supply box 24 as well as the electrical supply to the plate 25 are carried over to the ends of the element and are not shown here.
  • An electrode formed by individual profiles offers many advantages. It makes it possible in particular to take account of slow phenomena, such as the wear of the rollers or of the slots, as well as rapid phenomena such as a rupture of a profile or of a fastener, by facilitating the disassembly and the replacement of the profile. damaged. It makes it possible to associate the mechanical fixing and the electrical connection of the profiles at a sufficient number of points distributed along the width of the substrate; however, it also makes it possible to dissociate these two functions, by fixing the profiles to the support and independently connecting this support to the source of electric current. It also offers the possibility of modulating the supply of electrolyte and electric current to guarantee the homogeneity and transverse uniformity of the deposit.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)

Claims (14)

1. Elektrode für eine Elektrolysezelle zur Abscheidung eines metallischen Überzugs auf einem beweglichen Substrat, bestehend aus einem Elektrodenkörper mit elektrischen Stromzuführungsmitteln und mit mindestens einer entsprechend der Oberfläche besagten Substrats profilierten Oberfläche, wobei dieser Elektrodenkörper mehrere parallele schmale, an der besagten profilierten Oberfläche mündende Schlitze aufweist, die an quer zur Verschiebungsrichtung des Substrats angeordnete und abwechselnd mit Elektrolytzufuhr- bzw. -abfuhrmitteln verbundene Kanäle angeschlossen sind, dadurch gekennzeichnet, daß diese Querkanäle durch zueinander parallel und voneinander beabstandet angeordnete Profile (2; 11) begrenzt sind, daß diese Profile mindestens eine profilierte Fläche (7) aufweisen, daß diese Profile einzeln so an einem Träger (3) befestigt sind, daß diese profilierten Flächen besagte profilierte Oberfläche des Elektrodenkörpers bilden, und daß der Abstand (e; e′) zwischen zwei profilierten Flächen (7) die Breite einer der besagten schmalen parallelen Schlitze bestimmt.
2. Elektrode nach Anspruch 1, dadurch gekennzeichnet, daß sie Dichtungen (4) zwischen den Profilen und dem Träger aufweist, wobei diese Dichtungen jeglichen Kontakt zwischen den Halterungen der Profile an besagtem Träger und dem Elektrolyten verhindern.
3. Elektrode nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß diese Profile (2) die Gestalt eines I aufweisen und daß sie mittels rechteckiger, bezüglich des Substrats quer angeordneter Dichtungen von besagtem Träger getrennt sind.
4. Elektrode nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß diese Profile (11) die Gestalt eines U aufweisen und daß sie am Ende mindestens eines der Schenkel mit einem besagte profilierte Fläche tragenden Flansch (12) versehen sind, wobei das Innenvolumen dieser U-Profile mit jenen Elektrolytzufuhr- bzw. -abfuhrmitteln verbunden ist, während das zwischen zwei Profilen eingeschlossene Volumen mit jenen Elektrolytabfuhr- bzw. -zufuhrmitteln verbunden ist.
5. Elektrode nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß mindestens ein Elektrolytzufuhrkanal und/oder mindestens ein Elektrolytabfuhrkanal ein geschlossenes Ende aufweist und daß dessen Querschnitt sich zu jenem geschlossenen Ende hin ändert.
6. Elektrode nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß mindestens ein Elektrolytzufuhrkanal und/oder mindestens ein Elektrolytabfuhrkanal ein geschlossenes Ende aufweist und daß die Breite des mit diesem Kanal verbundenen Zufuhrschlitzes sich zu jenem geschlossenen Ende hin ändert.
7. Elektrode nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß mindestens ein Elektrolytzufuhrkanal und/oder mindestens ein Elektrolytabfuhrkanal ein geschlossenes Ende aufweist und daß besagte Oberfläche des Elektrodenkörpers quer so profiliert ist, daß die jenem Zufuhrkanal entsprechende Abscheidungszone eine zu jenem geschlossenen Ende hin veränderliche Dicke aufweist.
8. Elektrode nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Kanäle paarweise gruppiert sind, wobei jedes Paar einen Elektrolytzufuhrkanal und einen Elektrolytabfuhrkanal enthält, daß die beiden Kanäle ein und desselben Paars an einem ihrer benachbarten Enden geschlossen und an ihrem anderen Ende mit Elektrolytzufuhr- bzw. -abfuhrmitteln verbunden sind, und daß diese Kanalpaare jeweils umgekehrt angeordnet sind, mit den geschlossenen Kanalenden irgendeines dieser Paare neben den offenen Kanalenden des oder der benachbarten Paare.
9. Elektrode nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß jeder Kanal an seinen beiden Enden mit Elektrolytzufuhr- bzw. -abfuhrmitteln verbunden ist, wobei die Zufuhrkanäle und die Abfuhrkanäle in der Längsrichtung der Elektrode abwechselnd aufeinander folgen.
10. Elektrode nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß beide Enden jedes Kanals geschlossen sind, und daß die Elektrolytzufuhr- bzw. -abfuhrmittel an mehreren, bezüglich des Substrats quer verteilten Stellen entlang der Länge der betreffenden Kanäle angeschlossen sind.
11. Elektrode nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß diese Elektrolytzufuhr- bzw. -abfuhrmittel eine Mehrzahl identischer Längsteile umfassen, daß jeder dieser Teile seine eigenen mechanischen Halterungen und seine eigenen elektrischen Verbindungsmittel enthält, und daß jeder dieser Teile mit einer Elektrolytzufuhr- und -abfuhrleitung verbunden ist, wobei diese geradlinigen Teile quer zur Richtung des Substrats nebeneinander angeordnet sind.
12. Elektrode nach Anspruch 11, dadurch gekennzeichnet,daß jeder dieser Teile aus zwei länglichen, über eine Seitenwand gekoppelten Kästen aufgebaut ist, wobei einer dieser Kästen mit einer Elektrolytzufuhrleitung verbunden ist, während der andere Rasten mit einer Elektrolytabfuhrleitung verbunden ist, daß diese Kästen im wesentlichen horizontal unter dem besagte Querprofile tragenden Träger angeordnet sind,daß dieser Zufuhrkasten auf seiner oberen Fläche mit Öffnungen versehen ist, die ihn in Verbindung mit den Zufuhrkanälen bringen, und daß jener Abfuhrkasten auf seiner oberen Fläche mit Öffnungen versehen ist, die ihn mit den Elektrolytabfuhrkanälen in Verbindung bringen.
13. Elektrode nach Anspruch 12, dadurch gekennzeichnet, daß dieser Teil eine längliche, zwischen den beiden Kästen angeordnete leitende Platte aufweist, daß die beiden Kästen mittels dieser Platte gekoppelt sind und daß diese Platte an ihren Enden mit einer elektrischen Stromquelle verbunden ist.
14. Elektrode nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, daß die Anzahl solcher identischer Längsteile der Breite des zu überziehenden Substrats angepaßt ist.
EP19880870101 1987-06-05 1988-06-01 Electrode für eine Elektrolysezelle Expired - Lifetime EP0294358B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE8700635A BE1000586A7 (fr) 1987-06-05 1987-06-05 Electrode destinee a une cellule d'electrolyse.
BE8700635 1987-06-05

Publications (3)

Publication Number Publication Date
EP0294358A2 EP0294358A2 (de) 1988-12-07
EP0294358A3 EP0294358A3 (en) 1989-05-24
EP0294358B1 true EP0294358B1 (de) 1992-06-17

Family

ID=3882710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880870101 Expired - Lifetime EP0294358B1 (de) 1987-06-05 1988-06-01 Electrode für eine Elektrolysezelle

Country Status (3)

Country Link
EP (1) EP0294358B1 (de)
BE (1) BE1000586A7 (de)
DE (1) DE3872058T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106736233A (zh) * 2016-12-19 2017-05-31 新疆众和股份有限公司 电解槽钢壳强磁场环境下修复的方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2619821A1 (de) * 1976-05-05 1977-11-17 Hoechst Ag Verfahren und vorrichtung zur kontinuierlichen elektrolytischen behandlung eines metallbandes
BE905588A (fr) * 1986-10-09 1987-04-09 Centre Rech Metallurgique Dispositif de depot electrolytique et procede pour sa mise en oeuvre.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106736233A (zh) * 2016-12-19 2017-05-31 新疆众和股份有限公司 电解槽钢壳强磁场环境下修复的方法

Also Published As

Publication number Publication date
DE3872058T2 (de) 1993-02-18
EP0294358A2 (de) 1988-12-07
EP0294358A3 (en) 1989-05-24
DE3872058D1 (de) 1992-07-23
BE1000586A7 (fr) 1989-02-14

Similar Documents

Publication Publication Date Title
BE1003701A3 (fr) Cathode rotative.
EP0425354B1 (de) Verfahren und Vorrichtung zur Elektroplattierung eines metallischen Bandes
FR2821861A1 (fr) Appareil pour la commande de l'ecoulement dans un procede d'electrodeposition
EP0294358B1 (de) Electrode für eine Elektrolysezelle
EP0013215A1 (de) Elektrolyseeinrichtung
LU80496A1 (fr) Procede et diopositif pour le depot electrolytique en continu et a haute densite de courant d'un metal de recouvrement sur une tole
CA2386372C (fr) Cylindre de coulee continue de bande metallique comprenant un circuit de refroidissement
CA2919544C (fr) Cuve d'electrolyse destinee a la production d'aluminium et usine d'electrolyse comprenant cette cuve
LU85086A1 (fr) Dispositif pour le depot electrolytique d'une couche d'un metal de recouvrement sur une bande metallique
WO1997049843A1 (fr) Procede et installation de revetement electrolytique par une couche metallique de la surface d'un cylindre pour coulee continue de bandes metalliques minces
EP0292466B1 (de) Elektrode für eine Elektrolysezelle
FR2975475A1 (fr) Ensemble de support de panneau photovoltaique comprenant un cadre etanche avec des cotes profiles, et centrale correspondante.
EP0222724B1 (de) Verfahren und Vorrichtung zur Herstellung einer hauchdünnen Metallfolie durch galvanische Beschichtung
OA12931A (fr) Procédé de préchauffage d'une cuve pour la production d'aluminium par électrolyse.
BE1006220A6 (fr) Dispositif pour la fabrication d'un feuil metallique composite par depot electrolytique.
BE1006653A6 (fr) Structure d'anode pour une cellule de depot electrolytique a cathode verticale.
BE1001525A6 (fr) Dispositif d'alimentation en electrolyte d'une cellule de depot electrolytique.
WO2018096235A1 (fr) Électrode pour installation de traitement de surface d'un substrat en mouvement, unité et installation de traitement correspondantes
EP0430917B1 (de) Vorrichtung zur elektrolytischen Abscheidung einer kontinuierlichen Schicht mit konstanter Schichtdicke
LU86773A1 (fr) Installation pour la fabrication en continu d'une feuille metallique extra-mince par depot electrolytique
EP1155167A1 (de) Anordnung von elektrolysezellen für die herstellung von aluminium
BE1001584A6 (fr) Dispositif pour le depot electrolytique d'un metal et son procede d'utilisation.
FR2604449A1 (fr) Cathode pour les cuves d'electrolyse a diaphragme
CA1032788A (fr) Procede de fixation de couches minces de cuivre sur des barres omnibus en aluminium
FR2765597A1 (fr) Installation de revetement electrolytique de bandes metalliques, et anode pour une telle installation

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE DE FR GB IT LU NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE DE FR GB IT LU NL

17P Request for examination filed

Effective date: 19891102

17Q First examination report despatched

Effective date: 19910725

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT LU NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19920617

REF Corresponds to:

Ref document number: 3872058

Country of ref document: DE

Date of ref document: 19920723

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19930601

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19930630

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930630

BERE Be: lapsed

Owner name: CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR

Effective date: 19930630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19940101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940301

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST