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:
Feb. 16, 2021
Filed:
Jan. 23, 2018
Abb Schweiz Ag, Baden, CH;
Arcelormittal, Luxembourg, LU;
Bengt Rydholm, Västerås, SE;
Fredrik Sandberg, Västerås, SE;
Hongliang Yang, Västerås, SE;
Jan-Erik Eriksson, Västerås, SE;
Jean-Marie Galpin, Montigny-les-Metz, FR;
Bruno Langlet, Dunkirk, FR;
Jean-Luc Curé, Metz, FR;
Nicolas Triolet, Wormhout, FR;
Thierry Lecoester, Dunkirk, FR;
ABB Schweiz AG, Baden, CH;
ArcelorMittal, Luxembourg, LU;
Abstract
A method of controlling an electromagnetic stirrer arranged around a submerged entry nozzle (SEN) of a tundish provided with a stopper rod to control throughput of the tundish, the SEN being configured to provide tapping of molten metal from the tundish and the electromagnetic stirrer being configured to generate a rotating magnetic field in the SEN, wherein the method includes controlling the electromagnetic stirrer to operate only when a gas flow rate through the stopper rod is in a first range of 1.5 NL/min to 20 NL/min.