Abstract: A pickling installation for applying a pickling treatment to a metal strip in continuous movement, the pickling treatment using an acid solution, the pickling installation including: a plurality of cascading treatment tanks among which at least one treatment tank includes a spray/injection section for spraying/injecting the acid solution on the metal strip; and collection means for retrieving the sprayed acid solution after use and redirecting the sprayed acid solution to each spray/injection section. The at least one treatment tank has a first header in front of a first face of the metal strip and a second header in front of a second face of the metal strip. In a first treatment tank configuration, each of the first header and the second header have an internal flat surface intended to be parallel respectively to first and second faces of metal strip, and at a distance thereof.

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.

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.

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.

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.

Abstract: (EN) The present invention relates to a device for cooling a working roll (1, 2) belonging to a rolling stand used for rolling a long or flat product (3), characterized in that it comprises a cooling head in the form of a box section (6A, 6B) that is sealed except along a front face (42) lying a short distance from said roll (1, 2), and in which face a plurality of nozzles (41) has been machined or positioned in a determined pattern, said box section (6A, 6B) being concave and cylindrical at its front face (42). The box section (6A, 6B) is also fitted with transverse (5, 7) and lateral (8) plates which collaborate with the front face (42) of the box section so as to control the flow of cooling liquid and confine said liquid in the form of a highly turbulent flow. This then yields optimal cooling of the roll both in terms of the uniformity of the cooling across the surface thereof and in terms of the reduction in temperature as a result of the turbulent effect created.

Abstract: (EN) The present invention relates to a device for cooling a working roll (1, 2) belonging to a rolling stand used for rolling a long or flat product (3), characterized in that it comprises a cooling head in the form of a box section (6A, 6B) that is sealed except along a front face (42) lying a short distance from said roll (1, 2), and in which face a plurality of nozzles (41) has been machined or positioned in a determined pattern, said box section (6A, 6B) being concave and cylindrical at its front face (42). The box section (6A, 6B) is also fitted with transverse (5, 7) and lateral (8) plates which collaborate with the front face (42) of the box section so as to control the flow of cooling liquid and confine said liquid in the form of a highly turbulent flow. This then yields optimal cooling of the roll both in terms of the uniformity of the cooling across the surface thereof and in terms of the reduction in temperature as a result of the turbulent effect created.

Abstract: An upper transverse chamber and a lower transverse chamber have apertures for the passage of cooling agent to a product passing between them. At least the upper chamber is divided into a central compartment corresponding to the central zone of the product, and two lateral compartments, corresponding respectively to the two edge zones of the product. The division into compartments is achieved by partitions which are perpendicular to the bottom of the upper chamber. The partitions form, inside of the upper chamber, a channel converging in the direction of motion of the product.

Abstract: A metal product having at least one plane surface, e.g. steel strip, is cooled by means of an aqueous fluid as it moves along a predetermined path by apparatus comprising a wall disposed opposite the plane surface of the product and substantially parallel thereto so as to form a chamber of substantially constant thickness between the plane surface and the wall, at least one aperture in the wall communicating with the chamber for the passage of the aqueous fluid connected to the aperture through the wall. The aperture is connected to a source of the aqueous fluid. The rate of flow of the aqueous fluid and the spacing between the wall and the plane surface are both adjustable.