Arcelormittal

Arcelormittal France

Arcelormittal Investigacion Desarrollo Sl

Usinor

Benoit Deweer

Eric Silberberg

Bruno Schmitz

Maxime Monnoyer

Luc Vanhee

Hugues Cornil

Claude Maboge

Jacques Mottoulle

Yann Greday

Stephane Lecomte

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.

Equipment for coating a metal strip

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.

Method for coating a metal strip and equipment for implementing said method

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.

Method and installation for the vacuum colouring of a metal strip by means of magnetron sputtering

Growing community of inventors

Sterrebeek, Belgium

Benoit Deweer