Arcelormittal

Centre De Recherches Metallurgiques Asbl-Centrum Voor Research in De Metallurgie Vzw

Pascal Gerkens

Michel Roger Louis Bordignon

Jean-Francois Noville

Ana Isabel Farinha

Maiwenn Tifenn Soazig Larnicol

Julien Christopher Michel Smal

Xavier Marc Jacques Edmond Robert Vanden Eynde

Michel Roger Bordignon

Maiwenn Tifenn Larnicol

Xavier Marc Vanden Eynde

Julien Christopher Smal

Yves Hardy

Olivier Bregand

Maïwenn Larnicol

Maïwenn Tifenn Soazig Larnicol

Maiwenn Larnicol

Jean-François Noville

A method of treatment of a running ferrous alloy sheet containing at least one easily oxidized element is provided. The method includes a step of immersion of the sheet in a molten oxides bath. The molten oxides bath has a viscosity between 0.3.10Pa&#xb7;s and 3.10Pa&#xb7;s, the surface of the bath is contact with a non-oxidizing atmosphere, and the molten oxides are inert towards iron. The residence time of the running sheet in the bath is at least 1 s and the residues of oxides remaining on the surfaces of the sheet at the exit of the bath are eliminated. A treatment line of a ferrous alloy sheet for implementing the method, is provided. The treatment line includes a molten oxides bath having a viscosity between 0.3.10and 3.10Pa&#xb7;s. The surface of the bath is contact with a non-oxidizing atmosphere, and the molten oxides are inert towards iron. Mechanical devices for eliminating the residues of molten oxides remaining on the surfaces of the ferrous alloy sheet are at the exit of the molten oxides bath.

Method of treatment of a running ferrous alloy sheet and treatment line for its implementation

A facility for dip-coating a metal strip in continuous motion includes: a liquid coating metal bath from which the strip exits in a vertical strand; a bottom roller, a decambering roller, and, optionally, a stabilizing roller, all immersed in the liquid-metal bath; drying blades at an exit of the bath, for injecting compressed gas in order to remove excess coating that has not yet solidified so as to create a drying wave having a downward return stream of liquid metal; and a dissipating hydrodynamic-stabilization device placed between the drying blades and a last immersed roller, the dissipating hydrodynamic-stabilization device including a plurality of hydrodynamic pads for applying a load to at least one side of the metal strip and mounted so as to pivot around hinges so as to self-align the pads, the plurality of hydrodynamic pads extending transversely across a width of the strip.

Device for hydrodynamic stabilization of a continuously travelling metal strip

A thermal treatment process of a ferrous alloy sheet is provided. The process includes the step of performing a thermal treatment on said sheet when running, by immersing it into at least one molten oxides bath. The molten oxides bath has a viscosity lower than 3&#xb7;10Pa&#xb7;s, the surface of the bath is in contact with a non-oxidizing atmosphere and the molten oxides are inert towards iron. The difference between the temperature of the ferrous alloy sheet at the entry of the bath and the temperature of the bath is between 25&#xb0; C. and 900&#xb0; C. The residues of oxides remaining on the surfaces of the ferrous alloy sheet at the exit of the bath are eliminated. A device for implementing this process is also provided.

Thermal treatment process of a steel sheet and device for its implementation

Growing community of inventors

Baelen, Belgium

Pascal Gerkens