The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2022
Filed:
Feb. 27, 2017
Arcelormittal, Luxembourg, LU;
Emmanuel Dechassey, Godella, ES;
Christophe Silvy-Leligois, Godella, ES;
Francisco Chicharro Herranz, Puerto de Sagunto, ES;
Vicente Polo Mestre, Valencia, ES;
Marie-Christine Theyssier, Metz, FR;
Thierry Celotto, Villerupt, FR;
Christine Kaczynski, Maizières-les-Metz, FR;
Thomas Dupuy, Le Ban Saint Martin, FR;
Quang-Tien Ngo, Luxembourg, LU;
ArcelorMittal, Luxembourg, LU;
Abstract
A method for the manufacture of a cold-rolled steel sheet of thickness ebetween 0.5 mm and 3 mm is provided. At least two hot-rolled sheets of thickness eare supplied and butt welded, so as to create a welded joint (S1) with a direction perpendicular to the direction of hot rolling. The at least two hot-rolled sheets are pickled by continuous passage through a bath, then the assembly is cold rolled, in a step (L1), to an intermediate thickness e, the direction of cold rolling (DL) coinciding with the direction of hot rolling. The cold rolling is carried out with a reduction ratio such that: then the welded joint (S1) is removed so as to obtain at least two intermediate cold-rolled sheets. Then the two intermediate cold-rolled sheets are butt welded, so as to create a welded joint (S2), the direction of which is perpendicular to the direction of hot rolling, then the assembly of the at least two intermediate cold-rolled and welded sheets is cold-rolled, in a step (L2), to the final thickness e, the direction (DL) of the cold rolling step (L2) coinciding with the direction of rolling (DL).