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US 11,959,150 B2Granted
Welded steel sheets, and sheets thus produced
AssigneeArcelorMittal
InventorsEmmanuel Dechassey, Christophe Silvy-Leligois, Francisco Chicharro Herranz, Vicente Polo Mestre, Marie-Christine Theyssier, Thierry Celotto, Christine Kaczynski, Thomas Dupuy, Quang-Tien Ngo
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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 < 0.7 .
Claims16
A steel sheet welded and then cold rolled to a thickness between 0.5 mm and 3 mm, the steel sheet comprising:
- a base metal and a welded joint;
- a deformation ratio created by cold rolling in the base metal being equal to εMB;
- a deformation ratio created by cold rolling in the welded joint being equal to εS;
- 0.4
- ≤
- ε
-
- S
- ε
-
- MB
- ≤
- 0.7
- ;
- and
- a direction of the welded joint extending perpendicular to a direction of cold rolling.
13 more elements
Dependencies are inferred from the claim text.