公开(公告)号：US10428401B2

公开(公告)日：2019-10-01

申请号：US14766332

申请日：2013-02-06

Applicant: ARCELORMITTAL

Inventor： Maiwenn Tifenn Soazig Larnicol ,  Michel Roger Louis Bordignon ,  Xavier Marc Jacques Edmond Robert Vanden Eynde ,  Ana Isabel Farinha ,  Pascal Gerkens ,  Jean-Francois Noville ,  Julien Christopher Michel Smal

IPC: C21D1/63 ,  C21D9/46 ,  C21D1/46 ,  C21D1/607 ,  C21D1/00

Abstract: 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 3·10−1 Pa·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° C. and 900° 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.

公开(公告)号：US10590501B2

公开(公告)日：2020-03-17

申请号：US14766326

申请日：2013-02-06

Applicant: ARCELORMITTAL

Inventor： Maiwenn Tifenn Soazig Larnicol ,  Michel Roger Louis Bordignon ,  Xavier Marc Jacques Edmond Robert Vanden Eynde ,  Ana Isabel Farinha ,  Pascal Gerkens ,  Jean-Francois Noville ,  Julien Christopher Michel Smal

IPC: C07D471/04 ,  A61K31/4375 ,  C21D1/46 ,  C23C2/06 ,  C23C2/02 ,  C21D9/46 ,  C23C28/00 ,  C23C2/40 ,  C23C2/20 ,  C21D6/00 ,  C21D9/52 ,  C23F17/00

Abstract: 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 0.3.10−3 Pa·s and 3.10−1 Pa·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 0.3.10−3 and 3.10−1 Pa·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.