Device for the electrolytic coating of small parts

C - Chemistry – Metallurgy – 25 – D

Patent

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Details

C25D 17/20 (2006.01) C25D 13/12 (2006.01) C25D 13/22 (2006.01)

Patent

CA 2124082

In order to create an apparatus for electrically coating small parts that are electrically conductive, said apparatus comprising a bath of electrically conductive liquid coating agent, said bath being electrically connected to the one pole of a DC power source (cathode or anode), whereas the material that is to be coated is electrically connected to the other pole (anode or cathode), which can, at little outlay, permit a high throughput rate of metallic small parts, it is proposed that the apparatus consist of a screw conveyor (1) that has, inside its conveyor tube (2) electrically conductive contacts (3) that are connected to one pole of the DC power source; and in that the screw conveyor (1) has part of its cross section immersed in a dipping bath that is connected to the other pole.

L'invention a pour but de fournir un dispositif pour l'enduction, par électrolyse, de petites pièces à conductibilité électrique, notamment de pièces métalliques, comprenant un bain d'agent d'enduction liquide électriquement conducteur, ce bain étant connecté électriquement à un pôle d'une source de courant continu (cathode ou anode), cependant que le produit à enduire est connecté électriquement à l'autre pôle (anode ou cathode) de la source de courant continu, dispositif permettant d'obtenir, avec des moyens réduits et économiques, un débit élevé de petites pièces métalliques soumises à un vernissage par immersion. Ce but est atteint grâce au fait que le dispositif comprend une vis transporteuse sans fin (1) présentant à l'intérieur de son tube-transporteur (2), des contacts électriquement conducteurs (3) connectés à un pôle de la source de courant continu, et que la vis transporteuse sans fin (1) est placée, par une partie de sa section, dans le bac du bain d'immersion, lequel est connecté à l'autre pôle.

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