Abstract: Equipment for manufacturing a metal strip coated by a process that includes vacuum-depositing a layer of an oxidizable metal or an oxidizable metal alloy on a metal strip precoated with zinc or with a zinc alloy, then coiling the coated metal strip, then oxidizing a surface of the metal strip coated with the oxidizable metal or oxidizable metal alloy and treating the oxidized wound coil with a static diffusion treatment to obtain a strip having a coating that includes, in an upper portion, a layer of an alloy formed by diffusion of the oxidizable metal or the oxidizable metal alloy in all or part of the zinc or zinc alloy layer. The equipment includes a device for galvanizing the metal strip, a vacuum deposition coating device, and a static heat treatment device operating in a controlled atmosphere.

Abstract: Equipment for manufacturing a metal strip coated by a process that includes vacuum-depositing a layer of an oxidizable metal or an oxidizable metal alloy on a metal strip precoated with zinc or with a zinc alloy, then coiling the coated metal strip, then oxidizing a surface of the metal strip coated with the oxidizable metal or oxidizable metal alloy and treating the oxidized wound coil with a static diffusion treatment to obtain a strip having a coating that includes, in an upper portion, a layer of an alloy formed by diffusion of the oxidizable metal or the oxidizable metal alloy in all or part of the zinc or zinc alloy layer. The equipment includes a device for galvanizing the metal strip, a vacuum deposition coating device, and a static heat treatment device operating in a controlled atmosphere.

Abstract: The invention relates to a process for coating a metal strip, in which a layer of an oxidizable metal or an oxidizable metal alloy or a metal oxide is vacuum-deposited on a metal strip precoated with zinc or with a zinc alloy, the coated metal strip is then coiled, and the wound coil undergoes a static diffusion treatment so as to obtain a strip having a coating that comprises, in the upper portion, a layer of an alloy formed by diffusion of the oxidizable metal or the oxidizable metal alloy in all or part of the zinc or zinc alloy layer, and also to equipment for implementing the process.

Abstract: A vacuum process for etching a metal strip running over a backing roll facing a counterelectrode by magnetron sputtering, and a vacuum chamber etching installation implementing the process. A plasma is created in a gas close to the metal strip so as to generate radicals and/or ions that act on the strip, and at least one closed magnetic circuit, the width of which is approximately equal to that of the metal strip, is selected from a series of at least two closed magnetic circuits of different and fixed widths, then the selected magnetic circuit is positioned so as to face the metal strip, and then the etching of the moving metal strip is carried out.

Abstract: A vacuum process for etching a metal strip running over a backing roll facing a counterelectrode by magnetron sputtering, and a vacuum chamber etching installation implementing the process. A plasma is created in a gas close to the metal strip so as to generate radicals and/or ions that act on the strip, and at least one closed magnetic circuit, the width of which is approximately equal to that of the metal strip, is selected from a series of at least two closed magnetic circuits of different and fixed widths, then the selected magnetic circuit is positioned so as to face the metal strip, and then the etching of the moving metal strip is carried out.

Abstract: A magnetron sputtering method for vacuum coloring a metal strip passing above at least one conductive counter electrode in a vacuum chamber. The method creates a plasma in a gas close to the metal strip, such as to generate radicals and/or ions that act on the strip, a magnetic confinement circuit being positioned above the strip. The counter electrode includes a mobile surface that can move in rotation and/or translation in relation to the metal strip, the surface being moved during the coloring process and being continuously cleaned by a cleaning device that is obscured from the plasma before being exposed once again to the plasma. A coloring installation can implement the method.

Abstract: In order to cool a metal strip (2) which moves in a continuous manner: the strip (2) is pressed onto a main cooling roller (10) so that the strip forms an arc whose inner face delimits, with the outer face of this roller, a contact zone which is suitable for discharging part of the heat of the strip towards the inner side of the roller, the strip (2) is held in contact with the main cooling roller (10) by means of a support roller (14) on the outer face of the strip, which roller is constituted by a resiliently deformable and thermo-capacitive material, and the heat transmitted from the strip (2) to the support roller (14) is discharged using secondary cooling means (16).

Abstract: In order to cool a metal strip (2) which moves in a continuous manner: the strip (2) is pressed onto a main cooling roller (10) so that the strip forms an arc whose inner face delimits, with the outer face of this roller, a contact zone which is suitable for discharging part of the heat of the strip towards the inner side of the roller, the strip (2) is held in contact with the main cooling roller (10) by means of a support roller (14) on the outer face of the strip, which roller is constituted by a resiliently deformable and thermo-capacitive material, and the heat transmitted from the strip (2) to the support roller (14) is discharged using secondary cooling means (16).