EP0403362A1 - Current conducting roll - Google Patents

Current conducting roll Download PDF

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Publication number
EP0403362A1
EP0403362A1 EP90401612A EP90401612A EP0403362A1 EP 0403362 A1 EP0403362 A1 EP 0403362A1 EP 90401612 A EP90401612 A EP 90401612A EP 90401612 A EP90401612 A EP 90401612A EP 0403362 A1 EP0403362 A1 EP 0403362A1
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EP
European Patent Office
Prior art keywords
roller according
copper
steel
roller
internal
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Granted
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EP90401612A
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German (de)
French (fr)
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EP0403362B1 (en
Inventor
Claude Jacques
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Polimiroir
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Polimiroir
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/06—Wires; Strips; Foils
    • C25D7/0614—Strips or foils
    • C25D7/0657—Conducting rolls

Definitions

  • the present invention relates to the field of current conducting rollers, in particular but not exclusively rollers for continuous electrolysis lines.
  • This roller essentially comprises a central cylindrical part 12 of revolution which constitutes the main active part of the roller involved in the electrolysis, this central part is generally called “table” of the roller, and two half-shafts 14, 16 respectively arranged on the side and on the other side of the central part 12 and coaxial with it.
  • the half-shafts 14, 16 have a diameter smaller than that of the central part. They fulfill a double function: guiding the rotating roller on the one hand, and supplying the roller with current on the other.
  • rollers are traversed by an axial channel 18 allowing circulation of cooling water.
  • rollers are most often formed of a body 20 of steel provided with an external coating 30 of copper, ensuring in particular the function of collector.
  • the steel body 20 is itself generally formed by a central cylindrical sleeve 22 of revolution fitted onto two coaxial steel half-shafts 26, and welded by its ends, at 24, thereon.
  • ring 40 serving as a seal support on each half-shaft 14, 16.
  • the copper coating is generally formed by electrodeposition.
  • the production of the copper coating 30 is very delicate to implement, very long and expensive, taking into account the thicknesses imposed by the required amperages, generally between 12,000 and 18,000 amperes.
  • the object of the present invention is to propose a new current conducting roller which completely eliminates the drawbacks of the prior art.
  • a current conducting roller comprising in known manner either a steel body, characterized in that it comprises, at least over part of its length, an internal copper hoop.
  • two internal copper hoops are provided, respectively at each steel half-shaft of the roller.
  • the internal copper hoop is protected by a sheath, for example made of stainless steel.
  • the axis of the roller 100 shown in FIG. 3 is referenced 101.
  • the roller 100 comprises a central cylindrical part 112 of revolution, of larger diameter, which constitutes the main active part of the roller or table, and two half-shafts, of which only the half-shaft 116 appears in FIG. 3, which extend respectively on either side and coaxially the central part 112.
  • the roller 100 is composed of a steel body 120 and two internal copper frets, 130.
  • the steel body 120 is preferably itself formed by a central cylindrical sleeve of revolution 122 welded by its ends, respectively on stepped half-shafts 126, also made of steel. It will be noted that, unlike the prior art, the sleeve 122 is not fitted onto the half-shafts 126, but only welded at the end to these by annular beads 124.
  • the half-shafts 126 each have a through axial channel.
  • the particular geometry of the half-shafts 126 can be the subject of numerous embodiments and will therefore not be described in detail below. It will be noted that the stepped section of the half-shafts 126 is increasing, from the end part forming a manifold towards the central part 112.
  • each half-shaft 126 comprises an axially external part 125, an axially internal part 123 and a transition zone 128 between them.
  • the axially external part 125 is formed by a succession of cylindrical portions of increasing section towards the table 112. It has an internal surface, cylindrical of revolution around the axis 101, of constant diameter, referenced 127.
  • the axially internal part 123 is more flared than the axially external part 125.
  • the axially internal part 123 has an external radius equal to that of the sleeve 122. It is welded thereto by the bead 124.
  • the transition zone 128 diverges with respect to the axis 101 in alignment with the axially internal part 123.
  • the transition zone 128 alone ensures the passage of the current. In other words, at this transition zone, no copper part intervenes in the flow of the current.
  • the steel transition zone must therefore have a sufficient cross-section.
  • the two internal copper frets 130 are placed respectively inside the axially internal parts 125 of each of the steel half-shafts 126.
  • the cylindrical external surface of revolution 132 of the frets 130 is complementary to the internal surface 127 of the half-shafts 126, in order to ensure intimate electrical contact between the half-shafts 126 and the internal frets 130.
  • the silvering deposition can therefore be carried out either on the external surface 132 of the frets 130, or on the surface internal 127 half-shafts 126.
  • the copper frets 130 are protected from cooling water, generally carbonated water, as well as from chromic acid during the chroming operations of the bearing seats, seals and surface of the roller table, by a sheath. 150 preferably made of stainless steel.
  • This cylindrical sheath 150 of revolution is complementary to the internal surface 134 of the frets 130.
  • each hoop 130 is completed by two washers 152, 154 arranged transversely to the axis 101, respectively covering each of the ends of the hoops and welded at their internal periphery on the sheath 150, and at their external periphery on the half-trees 126.
  • the external surface 121 of the half-shafts 126 is chrome-plated.
  • the conventional ring 40 acting as a joint support shown by way of example in FIG. 3 can be omitted.
  • the chromed external surface 121 of the steel half-shafts 126 can in fact take the place of a joint support.
  • the body 120 of steel is accessible from the outside, so that the threads 160, 170 conventionally produced in the half-shafts can be provided directly in the half-shafts 126 made of steel, and not in a copper part of the half-shafts as was the case according to the prior art. It is understood that the mechanical strength of these threads is thus much higher in the context of the present invention.
  • the number and arrangement of these threads can be the subject of different embodiments and will therefore not be described in detail below. These threads can be used, for example, to block bearings or the manifold.
  • a nozzle 180 is attached by shrinking and fixed by welding on each end of the half-shafts 126.
  • connection between the tip 180 and the associated half-shaft 126 is such that the internal hoop 130 of copper covers the entire extent of the collector.
  • a coating 190 can be deposited by electrodeposition on the collector portion of the external surface of each steel half-shaft 126.
  • a coating 192 deposited by electrodeposition on the central sleeve of greatest flare 122, as shown in Figure 3 attached.
  • the copper coating 192 can facilitate subsequent shot peening.
  • These coatings 190 and 192 are however not essential. Furthermore, insofar as they do not play a primary role in the passage of the required amperages, they can have a very reduced thickness. Their cost and production time are therefore much lower than those of conventional coating.
  • each steel half-shaft 126 at the level of the collector part: of the order of 8,370 mm2, - section of the internal copper hoop 130: of the order of 3000 mm2, ⁇ - section of each steel half-shaft 126 at the transition zone between the cylindrical part in contact with a hoop 130 and the part welded to the central sleeve 122: at least of the order of 8,150 mm2.

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  • 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)
  • Electrolytic Production Of Metals (AREA)

Abstract

Current-conducting roller, in particular for a continuous electrolysis line, comprising in a manner known per se a steel body (120), characterised in that it comprises at least over a part of its length an internal band made of copper (130). <IMAGE>

Description

La présente invention concerne le domaine des rouleaux conducteurs de courant, notamment mais non exclusivement les rouleaux pour lignes d'électrolyse en continu.The present invention relates to the field of current conducting rollers, in particular but not exclusively rollers for continuous electrolysis lines.

Sur les dessins annexés on a représenté, en vue générale sur la figure 1 et selon une vue partielle en coupe axiale sur la figure 2, la structure d'un rouleau conducteur de courant classique 10, tel qu'utilisé communément sur les lignes d'électrolyse en continu.In the accompanying drawings is shown, in general view in Figure 1 and in a partial view in axial section in Figure 2, the structure of a conventional current conducting roller 10, as commonly used on the lines continuous electrolysis.

Ce rouleau comprend essentiellement une partie centrale 12 cylindrique de révolution qui constitue la partie principale active du rouleau intervenant dans l'électrolyse, cette partie centrale est appelée généralement "table" du rouleau, et deux demi-arbres 14, 16 disposés respectivement de part et d'autre de la partie centrale 12 et coaxiaux à celle-ci. Les demi-arbres 14, 16 présentent un diamètre inférieur à celui de la partie centrale. Ils remplissent une double fonction : guider le rouleau en rotation d'une part, et assurer l'alimentation du rouleau en courant d'autre part.This roller essentially comprises a central cylindrical part 12 of revolution which constitutes the main active part of the roller involved in the electrolysis, this central part is generally called "table" of the roller, and two half-shafts 14, 16 respectively arranged on the side and on the other side of the central part 12 and coaxial with it. The half-shafts 14, 16 have a diameter smaller than that of the central part. They fulfill a double function: guiding the rotating roller on the one hand, and supplying the roller with current on the other.

On notera que les rouleaux sont traversés par un canal axial 18 permettant une circulation d'eau de refroidissement.Note that the rollers are traversed by an axial channel 18 allowing circulation of cooling water.

Plus précisément, les rouleaux sont formés le plus souvent d'un corps 20 en acier pourvu d'un revêtement externe 30 en cuivre, assurant en particulier la fonction de collecteur. Le corps 20 en acier est lui-même formé généralement d'un manchon central 22 cylindrique de révolution emmanché sur deux demi-arbres coaxiaux en acier 26, et soudé par ses extrémités, en 24, sur ceux-ci.More specifically, the rollers are most often formed of a body 20 of steel provided with an external coating 30 of copper, ensuring in particular the function of collector. The steel body 20 is itself generally formed by a central cylindrical sleeve 22 of revolution fitted onto two coaxial steel half-shafts 26, and welded by its ends, at 24, thereon.

Il est prévu en outre une bague 40 servant de support de joint sur chaque demi-arbre 14, 16.There is further provided a ring 40 serving as a seal support on each half-shaft 14, 16.

Le revêtement de cuivre est généralement formé par électrodéposition. La réalisation du revêtement de cuivre 30 est fort délicate à mettre en oeuvre, très longue et coûteuse, compte-tenu des épaisseurs imposées par les ampèrages requis, compris généralement entre 12 000 et 18 000 ampères.The copper coating is generally formed by electrodeposition. The production of the copper coating 30 is very delicate to implement, very long and expensive, taking into account the thicknesses imposed by the required amperages, generally between 12,000 and 18,000 amperes.

On a tenté de contourner ces difficultés en réalisant le revêtement de cuivre sous forme d'une tulipe frettée sur chaque demi-arbre 26 d'acier. Dans ce cas les sections de chaque demi-arbre 26 en acier et de la tulipe frettée sont calculées pour permettre de passer en combinaison l'ampérage requis. Cependant, on constate fréquemment dans la pratique qu'une corrosion se développe entre la tulipe en cuivre frettée et les demi-arbres supports en acier. Il en résulte que seule la tulipe en cuivre frettée assure alors le passage de courant. Les rouleaux ne peuvent donner satisfaction dans ces conditions.We tried to circumvent these difficulties by making the copper coating in the form of a hooped tulip on each steel half-shaft 26. In this case, the sections of each steel half-shaft 26 and fretted tulip are calculated to allow the required amperage to be combined. However, it is frequently observed in practice that corrosion develops between the copper shrouded tulip and the steel support half-shafts. As a result, only the hooped copper tulip then ensures the flow of current. The rollers cannot give satisfaction under these conditions.

De même on constate fréquemment une corrosion entre le manchon central 22 et les demi-arbres emmanchés 26 de sorte que seul le cordon de soudure 24 assure alors le passage du courant.Similarly, corrosion is frequently observed between the central sleeve 22 and the fitted half-shafts 26 so that only the weld bead 24 then ensures the passage of current.

La présente invention a pour but de proposer un nouveau rouleau conducteur de courant qui élimine totalement les inconvénients de la technique antérieure.The object of the present invention is to propose a new current conducting roller which completely eliminates the drawbacks of the prior art.

Ce but est atteint selon la présente invention grâce à un rouleau conducteur de courant comprenant de façon connue en soit un corps en acier, caractérisé par le fait qu'il comprend, au moins sur une partie de sa longueur, une frette interne en cuivre.This object is achieved according to the present invention by means of a current conducting roller comprising in known manner either a steel body, characterized in that it comprises, at least over part of its length, an internal copper hoop.

Selon une caractéristique avantageuse de la présente invention, il est prévu deux frettes internes en cuivre, respectivement au niveau de chaque demi-arbre en acier du rouleau.According to an advantageous characteristic of the present invention, two internal copper hoops are provided, respectively at each steel half-shaft of the roller.

Selon une autre caractéristique avantageuse de la présente invention, la frette interne en cuivre est protégée par un fourreau, par exemple en acier inoxydable.According to another advantageous characteristic of the present invention, the internal copper hoop is protected by a sheath, for example made of stainless steel.

D'autres caractéristiques, buts et avantages de la présente invention apparaîtront à la lecture de la description détaillée qui va suivre et en regard des dessins annexés, donnés à titre d'exemple non limitatif et sur lesquels :

  • - les figures 1 et 2 précédemment décrites illustrent l'état de la technique, et
  • - la figure 3 représente une vue schématique partielle en coupe axiale d'un rouleau conducteur de courant conforme à la présente invention.
Other characteristics, aims and advantages of the present invention will appear on reading the detailed description which follows and with reference to the appended drawings, given by way of nonlimiting example and in which:
  • FIGS. 1 and 2 previously described illustrate the state of the art, and
  • - Figure 3 shows a partial schematic view in axial section of a current conducting roller according to the present invention.

L'axe du rouleau 100 représenté sur la figure 3 est référencé 101.The axis of the roller 100 shown in FIG. 3 is referenced 101.

Pour l'essentiel, comme indiqué précédemment, le rouleau 100 comprend une partie centrale 112 cylindrique de révolution, de plus grand diamètre, qui constitue la partie principale active du rouleau ou table, et deux demi-arbres, dont seul le demi-arbre 116 apparaît sur la figure 3, qui prolongent respectivement de part et d'autre et coaxialement la partie centrale 112.Essentially, as indicated above, the roller 100 comprises a central cylindrical part 112 of revolution, of larger diameter, which constitutes the main active part of the roller or table, and two half-shafts, of which only the half-shaft 116 appears in FIG. 3, which extend respectively on either side and coaxially the central part 112.

Plus précisément, le rouleau 100 est composé d'un corps en acier 120 et de deux frettes en cuivre, internes, 130.More specifically, the roller 100 is composed of a steel body 120 and two internal copper frets, 130.

Le corps en acier 120 est de préférence lui-même formé d'un manchon central cylindrique de révolution 122 soudé par ses extrémités, respectivement sur des demi-arbres 126 étagés, également en acier. On notera qu'à la différence de la technique antérieure, le manchon 122 n'est pas emmanché sur les demi-arbres 126, mais seulement soudé en extrémité sur ceux-ci par des cordons annulaires 124. Les demi-arbres 126 présentent chacun un canal axial traversant.The steel body 120 is preferably itself formed by a central cylindrical sleeve of revolution 122 welded by its ends, respectively on stepped half-shafts 126, also made of steel. It will be noted that, unlike the prior art, the sleeve 122 is not fitted onto the half-shafts 126, but only welded at the end to these by annular beads 124. The half-shafts 126 each have a through axial channel.

La géométrie particulière des demi-arbres 126 peut faire l'objet de nombreux modes de réalisation et ne sera donc pas décrite en détail par la suite. On notera que la section étagée des demi-arbres 126 est croissante, à partir de la partie d'extrémité formant collecteur vers la partie centrale 112.The particular geometry of the half-shafts 126 can be the subject of numerous embodiments and will therefore not be described in detail below. It will be noted that the stepped section of the half-shafts 126 is increasing, from the end part forming a manifold towards the central part 112.

Pour l'essentiel chaque demi-arbre 126 comprend une partie axialement externe 125, une partie axialement interne 123 et une zone de transition 128 entre celles-ci. La partie axialement externe 125 est formée d'une succession de portions cylindriques de section croissante vers la table 112. ELle possède une surface interne, cylindrique de révolution autour de l'axe 101, de diamètre constant, référencé 127. La partie axialement interne 123 est plus évasée que la partie axialement externe 125. La partie axialement interne 123 présente un rayon externe égal à celui du manchon 122. Elle est soudée sur celui-ci par le cordon 124. La zone de transition 128 diverge par rapport à l'axe 101 en rapprochement de la partie axialement interne 123.Essentially each half-shaft 126 comprises an axially external part 125, an axially internal part 123 and a transition zone 128 between them. The axially external part 125 is formed by a succession of cylindrical portions of increasing section towards the table 112. It has an internal surface, cylindrical of revolution around the axis 101, of constant diameter, referenced 127. The axially internal part 123 is more flared than the axially external part 125. The axially internal part 123 has an external radius equal to that of the sleeve 122. It is welded thereto by the bead 124. The transition zone 128 diverges with respect to the axis 101 in alignment with the axially internal part 123.

La zone de transition 128 assure seule le passage du courant. En d'autres termes au niveau de cette zone de transition aucune partie cuivrée n'intervient dans le passage du courant. La zone de transition en acier doit donc présenter une section suffisante.The transition zone 128 alone ensures the passage of the current. In other words, at this transition zone, no copper part intervenes in the flow of the current. The steel transition zone must therefore have a sufficient cross-section.

Les deux frettes internes en cuivre 130 sont placées respectivement à l'intérieur des parties axialement interne 125 de chacun des demi-arbres en acier 126. La surface externe cylindrique de révolution 132 des frettes 130 est complémentaire de la surface interne 127 des demi-arbres 126, afin d'assurer un contact électrique intime entre les demi-arbres 126 et les frettes internes 130.The two internal copper frets 130 are placed respectively inside the axially internal parts 125 of each of the steel half-shafts 126. The cylindrical external surface of revolution 132 of the frets 130 is complementary to the internal surface 127 of the half-shafts 126, in order to ensure intimate electrical contact between the half-shafts 126 and the internal frets 130.

Pour renforcer ce contact électrique, on peut prévoir un dépôt d'argenture entre les demi-arbres 126 et les frettes internes 130. Le dépôt d'argenture peut par conséquent être réalisé soit sur la surface externe 132 des frettes 130, soit sur la surface interne 127 des demi-arbres 126.To strengthen this electrical contact, provision can be made for silvering between the half-shafts 126 and the internal frets 130. The silvering deposition can therefore be carried out either on the external surface 132 of the frets 130, or on the surface internal 127 half-shafts 126.

Les frettes en cuivre 130 sont protégées de l'eau de refroidissement, généralement de l'eau carbonatée, ainsi que de l'acide chromique lors des opérations de chromage des portées de roulement, joints et surface de la table du rouleau, par un fourreau 150 réalisé de préférence en acier inoxydable.The copper frets 130 are protected from cooling water, generally carbonated water, as well as from chromic acid during the chroming operations of the bearing seats, seals and surface of the roller table, by a sheath. 150 preferably made of stainless steel.

Ce fourreau 150 cylindrique de révolution est complémentaire de la surface interne 134 des frettes 130.This cylindrical sheath 150 of revolution is complementary to the internal surface 134 of the frets 130.

La protection de chaque frette 130 est complétée par deux rondelles 152, 154 disposées transversalement à l'axe 101, recouvrant respectivement chacune des extrémités des frettes et soudées au niveau de leur périphérie interne sur le fourreau 150, et au niveau de leur périphérie externe sur les demi-arbres 126.The protection of each hoop 130 is completed by two washers 152, 154 arranged transversely to the axis 101, respectively covering each of the ends of the hoops and welded at their internal periphery on the sheath 150, and at their external periphery on the half-trees 126.

L'utilisation d'une frette interne en cuivre, outre le fait qu'elle autorise une fabrication rapide et économique, permet de garantir le passage des ampérages requis. En effet, grâce à la protection formée par le fourreau 150, on empêche toute corrosion entre les demi-arbres 126 et les frettes 130.The use of an internal copper hoop, in addition to the fact that it allows rapid and economical manufacture, guarantees the passage of the required amperages. In fact, thanks to the protection formed by the sheath 150, any corrosion between the half-shafts 126 and the frets 130 is prevented.

De préférence la surface externe 121 des demi-arbres 126 est chromée.Preferably the external surface 121 of the half-shafts 126 is chrome-plated.

Ainsi, la bague classique 40 tenant lieu de support de joint, représentée à titre d'exemple sur la figure 3 peut être omise. La surface externe chromée 121 des demi-arbres 126 en acier peut en effet tenir lieu elle-même de support de joint.Thus, the conventional ring 40 acting as a joint support, shown by way of example in FIG. 3 can be omitted. The chromed external surface 121 of the steel half-shafts 126 can in fact take the place of a joint support.

On notera que grâce à la structure de rouleau proposé dans le cadre de la présente invention, le corps 120 en acier est accessible à l'extérieur, de sorte que les filetages 160, 170 réalisés classiquement dans les demi-arbres peuvent être ménagés directement dans les demi-arbres 126 en acier, et non pas dans une partie en cuivre des demi-arbres comme cela était le cas selon la technique antérieure. On comprend que la tenue mécanique de ces filetages est ainsi bien supérieure dans le cadre de la présente invention. Le nombre et la disposition de ces filetages peuvent faire l'objet de différents modes de réalisation et ne seront donc pas décrits dans le détail par la suite. Ces filetages peuvent servir par exemple au blocage des roulements ou du collecteur.It will be noted that thanks to the roller structure proposed within the framework of the present invention, the body 120 of steel is accessible from the outside, so that the threads 160, 170 conventionally produced in the half-shafts can be provided directly in the half-shafts 126 made of steel, and not in a copper part of the half-shafts as was the case according to the prior art. It is understood that the mechanical strength of these threads is thus much higher in the context of the present invention. The number and arrangement of these threads can be the subject of different embodiments and will therefore not be described in detail below. These threads can be used, for example, to block bearings or the manifold.

De préférence un embout 180 est rapporté par frettage et fixé par soudure sur chaque extrémité des demi-arbres 126.Preferably, a nozzle 180 is attached by shrinking and fixed by welding on each end of the half-shafts 126.

On notera que, comme représenté sur la figure 3 annexée, la liaison entre l'embout 180 et le demi-arbre associé 126 est telle que la frette interne 130 en cuivre couvre toute l'étendue du collecteur.Note that, as shown in Figure 3 attached, the connection between the tip 180 and the associated half-shaft 126 is such that the internal hoop 130 of copper covers the entire extent of the collector.

Le cas échéant, un revêtement 190 peut être déposé par électrodéposition sur la portion formant collecteur de la surface externe de chaque demi-arbre en acier 126. De même, on peut prévoir un revêtement 192 déposé par électrodéposition sur le manchon central de plus grand évasement 122, comme représenté sur la figure 3 annexée. Le revêtement 192 en cuivre peut faciliter la réalisation d'un grenaillage ultérieur.If necessary, a coating 190 can be deposited by electrodeposition on the collector portion of the external surface of each steel half-shaft 126. Similarly, one can provide a coating 192 deposited by electrodeposition on the central sleeve of greatest flare 122, as shown in Figure 3 attached. The copper coating 192 can facilitate subsequent shot peening.

Ces revêtements 190 et 192 ne sont cependant pas indispen­sables. Par ailleurs, dans la mesure où ils n'interviennent pas à titre principal dans le passage des ampérages requis, ils peuvent présenter une épaisseur très réduite. Leur coût et temps de réalisation sont par conséquent très inférieurs à ceux du revêtement30 classique.These coatings 190 and 192 are however not essential. Furthermore, insofar as they do not play a primary role in the passage of the required amperages, they can have a very reduced thickness. Their cost and production time are therefore much lower than those of conventional coating.

A titre d'exemple non limitatif, pour un rouleau destiné à une ligne d'électrolyse en continu, on peut prévoir les sections suivantes :
section de chaque demi-arbre en acier 126, au niveau de la partie formant collecteur : de l'ordre de 8 370 mm²,
- section de la frette de cuivre interne 130 : de l'ordre de 3 000 mm²,
< - section de chaque demi-arbre en acier 126 au niveau de la zone de transition entre la partie cylindrique en contact avec une frette 130 et la partie soudée sur le manchon central 122 : au minimum de l'ordre de 8 150 mm².By way of nonlimiting example, for a roller intended for a continuous electrolysis line, the following sections can be provided:
section of each steel half-shaft 126, at the level of the collector part: of the order of 8,370 mm²,
- section of the internal copper hoop 130: of the order of 3000 mm²,
<- section of each steel half-shaft 126 at the transition zone between the cylindrical part in contact with a hoop 130 and the part welded to the central sleeve 122: at least of the order of 8,150 mm².

La présente invention n'est pas limitée au mode de réalisation qui vient d'être décrit mais s'étend à toute variante conforme à son esprit.The present invention is not limited to the embodiment which has just been described but extends to any variant in accordance with its spirit.

Claims (11)

1. Rouleau conducteur de courant, en particulier pour ligne d'électrolyse en continu, comprenant de façon connue en soit un corps (120) en acier, caractérisé par le fait qu'il comprend au moins sur une partie de sa longueur, une frette interne en cuivre (130).1. Current conducting roller, in particular for a continuous electrolysis line, comprising, in known manner, a body (120) of steel, characterized in that it comprises, at least over part of its length, a hoop internal copper (130). 2. Rouleau selon la revendication 1 dans lequel le corps (120) est formé d'une partie cylindrique centrale de grand évasement (122) prolongée respectivement de part et d'autre par deux demi-arbres coaxiaux (126) caractérisé par le fait qu'il est prévu deux frettes internes en cuivre (130), respectivement au niveau de chaque demi-arbre en acier (126).2. Roller according to claim 1 wherein the body (120) is formed of a central cylindrical part of large flare (122) extended respectively on either side by two coaxial half-shafts (126) characterized in that 'There are two internal copper frets (130), respectively at each steel half-shaft (126). 3. Rouleau selon l'une des revendications 1 ou 2, caractérisé par le fait que la frette interne en cuivre (130) est protégée par un fourreau (150).3. Roller according to one of claims 1 or 2, characterized in that the internal copper hoop (130) is protected by a sheath (150). 4. Rouleau selon la revendication 3, caractérisé par le fait que le fourreau (150) est en acier inoxydable.4. Roller according to claim 3, characterized in that the sheath (150) is made of stainless steel. 5. Rouleau selon l'une des revendications 3 ou 4, caractérisé par le fait qu'il comprend en outre deux rondelles (152, 154) en extrémité du fourreau (150) renforçant la protection de la frette (130).5. Roller according to one of claims 3 or 4, characterized in that it further comprises two washers (152, 154) at the end of the sleeve (150) reinforcing the protection of the hoop (130). 6. Rouleau selon l'une des revendications 1 à 5, caractérisé par le fait que la surface externe (121) du corps en acier est chromée.6. Roller according to one of claims 1 to 5, characterized in that the external surface (121) of the steel body is chrome-plated. 7. Rouleau selon l'une des revendications 1 à 6, caractérisé par le fait que la surface externe (121) du corps en acier sert de support de joint.7. Roller according to one of claims 1 to 6, characterized in that the external surface (121) of the steel body serves as a seal support. 8. Rouleau selon l'une des revendications 1 à 7, caractérisé par le fait que la surface externe (121) du corps en acier est pourvue de filetages (160, 170).8. Roller according to one of claims 1 to 7, characterized in that the external surface (121) of the steel body is provided with threads (160, 170). 9. Rouleau selon l'une des revendications 1 à 8, caractérisé par le fait qu'il est prévu un dépôt d'argenture entre la frette interne (130) en cuivre et le corps en acier (120).9. Roller according to one of claims 1 to 8, characterized in that there is provided a deposit of silvering between the internal hoop (130) in copper and the steel body (120). 10. Rouleau selon l'une des revendications 1 à 9, caractérisé par le fait qu'il comprend un mince dépôt externe de cuivre (190), réalisé par électrodéposition, au niveau de la zone de collecteur10. Roller according to one of claims 1 to 9, characterized in that it comprises a thin external deposit of copper (190), produced by electrodeposition, at the level of the collector zone 11. Rouleau selon l'une des revendications 1 à 10, caractérisé par le fait qu'il comprend un mince dépôt externe de cuivre (192), réalisé par électrodéposition, au niveau de la table du rouleau.11. Roller according to one of claims 1 to 10, characterized in that it comprises a thin external deposit of copper (192), produced by electrodeposition, at the level of the roller table.
EP90401612A 1989-06-12 1990-06-12 Current conducting roll Expired - Lifetime EP0403362B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8907720A FR2648269B1 (en) 1989-06-12 1989-06-12 CURRENT CONDUCTING ROLL
FR8907720 1989-06-12

Publications (2)

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EP0403362A1 true EP0403362A1 (en) 1990-12-19
EP0403362B1 EP0403362B1 (en) 1996-04-17

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EP90401612A Expired - Lifetime EP0403362B1 (en) 1989-06-12 1990-06-12 Current conducting roll

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US (1) US5083353A (en)
EP (1) EP0403362B1 (en)
CA (1) CA2018741C (en)
DE (1) DE69026535T2 (en)
ES (1) ES2085902T3 (en)
FR (1) FR2648269B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682525B1 (en) * 1991-10-15 1994-01-14 Polimiroir IMPROVEMENT ON CURRENT CONDUCTING ROLLERS IN PARTICULAR FOR ELECTROLYSIS LINES.
JP3102132B2 (en) * 1992-03-31 2000-10-23 住友金属工業株式会社 Heat crown suppression furnace roll
US6514392B2 (en) * 2001-07-02 2003-02-04 Jason Ko Conducting roller for an electroplating apparatus
US20090045029A1 (en) * 2007-08-16 2009-02-19 Deur Delwyn G Conveyor roller and cartridge bearing assembly for same
FR3076299B1 (en) * 2017-12-29 2021-01-08 Polimiroir CURRENT CONDUCTIVE ROLLS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2326490A1 (en) * 1973-05-24 1974-12-12 Kabel Metallwerke Ghh Contact rollers for electrolytic processing of strip - copper tube shrunk on journals to increase total copper thickness
GB2019127A (en) * 1978-04-13 1979-10-24 Masch & Werkzeugbau Gmbh A current-conducting roll and a manufacturing process therefor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2958742A (en) * 1956-03-08 1960-11-01 United States Steel Corp Conductor roll and method of making the same
US3165179A (en) * 1961-09-11 1965-01-12 United States Steel Corp Ceramic coated conductor roll
JPS6045715B2 (en) * 1982-06-16 1985-10-11 日本硬質技研株式会社 Manufacturing method for energizing conductor roll
JPS60135595A (en) * 1983-12-23 1985-07-18 Kubota Ltd Electricity conducting roll for electroplating

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2326490A1 (en) * 1973-05-24 1974-12-12 Kabel Metallwerke Ghh Contact rollers for electrolytic processing of strip - copper tube shrunk on journals to increase total copper thickness
GB2019127A (en) * 1978-04-13 1979-10-24 Masch & Werkzeugbau Gmbh A current-conducting roll and a manufacturing process therefor

Also Published As

Publication number Publication date
CA2018741A1 (en) 1990-12-12
FR2648269A1 (en) 1990-12-14
DE69026535T2 (en) 1996-12-19
CA2018741C (en) 1999-02-23
US5083353A (en) 1992-01-28
EP0403362B1 (en) 1996-04-17
FR2648269B1 (en) 1994-02-18
DE69026535D1 (en) 1996-05-23
ES2085902T3 (en) 1996-06-16

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