Abstract: A device (1) for carrying out continuous electrolytic precipitation processes has a cathodic live cylinder (3) whose top surface is electroconductive over its whole useful width. An anode A is arranged concentrically to and spaced apart from the cathodic live cylinder (3). An electrolyte flows through the space (6) separating the live cylinder (3) from the anode A. Shielding strips (9, 9′) associated to the live cylinder (3) are located between the cathodic surface of the live cylinder (3) and the anode A and electrically shield the marginal regions of the live cylinder (3), thus protecting them from electrolytic coating. The useful region N of the live cylinder (3) for carrying out the electrolytic precipitation processes is located between the shielding strips (9, 9′).

Abstract: The present invention relates to an electrode preferably an insoluble electrode for an electrolytic cell. The electrode is located within an enclosure defining a chamber, a wall of said enclosure being formed by a membrane allowing ions to pass therethrough. The enclosure has an opening for feeding electrolyte, an opening for evacuating electrolyte and means conducting the upward current of electrolyte with a velocity in the vicinity of the electrode of at least 0.01 m/s. The invention relates also to plants and processes using such electrode for the plating or deplating of metal strips.

Abstract: In a device for electrolytically coating one side of metal strips (2), the metal strips to be coated are guided around a rotary cathodic current roller (1), which they contact, and a partially cylindrical, insoluble anode (3) is arranged approximately concentrically around the current roller, at a distance thereof. The interval (4) between the section (21) of the strip guided on the current roller (1) and the anode (3) is delimited in the area of the strip edges (22) by seals (5) which can be oriented in a direction parallel to the axis of the roller. The electrolyte flows through the interval (4).

Abstract: In a device for the electrolytic deposition of metal on the metal strips (1) forming the cathode, which are taken through a gap in an electrolyte (3) between two flat or rod-like parallel anodes (2), the proposal is for edge masks (4) to screen off the edge regions of the metal strip (1). The shanks (41 ) of each edge mask (4) are prestressed by springs against the anodes (2) and their relatively wide shanks may be directed transversely to the direction of the strip in order to take transitions between different strip widths into account.

Abstract: In a process for the electrolytic deposition of metal on one side of a strip, preferably a steel strip which forms the cathode, the section (7) of the strip to be coated is guided through a gap between two parallel anodes (3,4) which are insoluble in the electrolyte (6). A voltage can be applied to the anodes (3,4) independently of each other. One of the two anodes is subdivided perpendicular to the direction of motion of the strip into several sections (41, 42, 43, 44) electrically insulated from each other. Voltages are selectively and independently applied to the anode sections to prevent the side of the strip facing the anode sections from being permanently coated and to prevent passivation of the anode sections.

Abstract: The invention relates to a vertical electroplating cell for processing metal strips in which the strip to be processed running from an upper conductor roll is led to a lower deflecting immersion roll and from there to a further upper conductor roll, the respective descending and ascending strip portion to be processed being subjected in a canal between vertically disposed anodes to the electrolyte flow conducted in circulation at high speed against strip running direction. In such a electroplating cell the circulation of large electrolyte amounts using the minimum possible pump energy is achieved in that the electrolyte flow directed in each case in the canals (6, 7) between the anode rows (5, 7) against the strip running direction are generated via liquid jet pumps disposed on outer canals between rear sides of anode rows and housing walls.

Abstract: A process and apparatus for coating metal strips on both sides with an enamel base coat and on at least one side thereof with an enamel top coat by continuously passing such strips in a contactless manner through baking furnaces. For the heat treatment following the coating step, the metal strips are vertically admitted into a baking furnace, and vertically guided through the baking furnace.

Abstract: A roller electrode, to be used for the support of sheet-metal strips in an electrorefining bath, has a hollow-cylindrical steel body spacedly surrounded by steel tubing for the circulation of a cooling fluid. A thin-walled shell of steel or nickel alloy, spacedly enveloping the tubing, defines with the roller body an annular space filled with a mass of lower-melting metal such as copper in which the tubing is embedded. The shell may extend partly around two stub shafts extending integral with the roller body at opposite ends therefrom. In making the electrode, the shell is heated above the melting point of the lower-melting metal which is then introduced in a molten state into the space containing the tubing where it is allowed to harden.