公开(公告)号：US20220002833A1

公开(公告)日：2022-01-06

申请号：US17470257

申请日：2021-09-09

Applicant: ArcelorMittal

Inventor： Emmanuel DECHASSEY ,  Christophe SILVY-LELIGOIS ,  Francisco CHICHARRO HERRANZ ,  Vicente POLO MESTRE ,  Marie-Christine THEYSSIER ,  Thierry CELOTTO ,  Christine KACZYNSKI ,  Thomas DUPUY ,  Quang-Tien NGO

IPC: C21D9/46 ,  B21B15/00 ,  B23K11/00 ,  B23K11/04 ,  B23K26/20 ,  C21D8/02 ,  C21D9/50 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C23G1/00

Abstract: A steel sheet that is welded and then cold rolled to a thickness between 0.5 mm and 3 mm, the deformation ratio created by cold rolling in the base metal is equal to εMB, for which the deformation ratio created by the cold rolling in the welded joint is equal to εS, where: 0.4 ≤ ɛS ɛ ⁢ M ⁢ B

公开(公告)号：US20220250139A1

公开(公告)日：2022-08-11

申请号：US17610746

申请日：2020-05-12

Applicant: ArcelorMittal

Inventor： Emmanuel DECHASSEY ,  Woudhouh MEMNI ,  Patrice VICENTE-HERNANDEZ

IPC: B22D7/04 ,  C23C2/34

Abstract: An ingot, having a volume between 0.15 m3 and 0.80 m3 and a surface area to volume ratio between 10 m−1 and 18 m−1, made of at least one metal, having longitudinal faces extending between two end faces and including at least one hole extending from one of the longitudinal faces, the maximum distance between any point of the hole periphery, to its closest longitudinal face, noted MaxL, the at least one hole being configured such that said maximum distance MaxL is smaller than the minimal distance, noted MinE, between any point of the hole periphery and its closest end face.

公开(公告)号：US20220314308A1

公开(公告)日：2022-10-06

申请号：US17610791

申请日：2020-05-13

Applicant: ArcelorMittal

Inventor： Emmanuel DECHASSEY ,  Woudhouh MEMNI ,  Patrice VICENTE-HERNANDEZ

IPC: B22D7/00 ,  B22D7/06 ,  B22D5/00

Abstract: A rectangular parallelepiped ingot defined by a height H, a width W and a length L, having longitudinal faces extending between two end faces, having a volume between 0.15 m3 and 0.80 m3 and a surface area to volume ratio between 10 m−1 and 18 m−1, made of at least one metal, including at least one notch and a notch tip along the ingot length, wherein the at least one notch is configured such that: MaxD

公开(公告)号：US20200299796A1

公开(公告)日：2020-09-24

申请号：US16088287

申请日：2017-02-27

Applicant: ArcelorMittal

Inventor： Emmanuel DECHASSEY ,  Christophe SILVY-LELIGOIS ,  Francisco CHICHARRO HERRANZ ,  Vicente POLO MESTRE ,  Marie-Christine THEYSSIER ,  Thierry CELOTTO ,  Christine KACZYNSKI ,  Thomas DUPUY ,  Quang-Tien NGO

IPC: C21D9/46 ,  C21D8/02 ,  C21D9/50 ,  B23K11/00 ,  B23K11/04 ,  B23K26/20 ,  B21B15/00 ,  C23G1/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18

Abstract: A method for the manufacture of a cold-rolled steel sheet of thickness ef between 0.5 mm and 3 mm is provided. At least two hot-rolled sheets of thickness ei are 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 eint, the direction of cold rolling (DL1) coinciding with the direction of hot rolling. The cold rolling is carried out with a reduction ratio ɛ 1 = Ln  ( e i e int ) such that: 0 . 3  5 ≤ Ln   ( ei e   int ) Ln   ( e  i e  f ) ≤ 0 . 6  5 , 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 ef, the direction (DL2) of the cold rolling step (L2) coinciding with the direction of rolling (DL1).