METHOD OF TREATMENT OF A RUNNING FERROUS ALLOY SHEET AND TREATMENT LINE FOR ITS IMPLEMENTATION

摘要

Method of treatment of a running ferrous alloy sheet containing at least one easily oxidized element, comprising a step of immersion of said sheet in a molten oxides bath, wherein: - said molten oxides bath has a viscosity between 0.3.10-3 Pa.s and 3.10-1 Pa.s, the surface of said bath being in contact with a non-oxidizing atmosphere, and said molten oxides are inert towards iron; - the residence time of said running sheet in said bath is at least 1 s; - the residues of oxides remaining on the surfaces of said sheet at the exit of the bath are eliminated. Treatment line of a ferrous alloy sheet (1 ) for implementing said method, comprising : - a molten oxides bath (6) having a viscosity between 0.3.10-3 and 3.10-1 Pa.s, the surface of said bath (6) being in contact with a non-oxidizing atmosphere, said molten oxides being inert towards iron and - means for eliminating the residues of molten oxides remaining on the surfaces of said ferrous alloy sheet (1) at the exit of said molten oxides bath (6).