Abstract: A method is used to fabricate a hot-rolled steel having a yield strength greater than 550 MPa and an impact toughness of at least 27 J at a temperature of -40° F. In one embodiment, the yield strength is greater than 690 MPa. The method includes melting steel to create melted steel. The melted steel is poured into a mold. The metal steel is continuously cast into a steel slab. The steel slab is heated to maintain a predetermined temperature. The steel slab is rolled to reduce the thickness to a predetermined thickness to create a hot-rolled steel sheet.
Type:
Grant
Filed:
October 2, 2020
Date of Patent:
October 31, 2023
Assignee:
Big River Steel, LLC
Inventors:
Amar K De, Denis Hennessy, Chirag R. Mahimkar
Abstract: A method is used to fabricate a hot-rolled steel having a yield strength greater than 550 MPa and an impact toughness of at least 27 J at a temperature of ?40° F. In one embodiment, the yield strength is greater than 690 MPa. The method includes melting steel to create melted steel. The melted steel is poured into a mold. The metal steel is continuously cast into a steel slab. The steel slab is heated to maintain a predetermined temperature. The steel slab is rolled to reduce the thickness to a predetermined thickness to create a hot-rolled steel sheet.
Type:
Application
Filed:
May 26, 2023
Publication date:
September 21, 2023
Applicant:
Big River Steel, LLC
Inventors:
Amar K. De, Denis Hennessy, Chirag R. Mahimkar