Patent ID: 7299857
Filing Date: 2007-11-27
Classification: B22D

Abstract:
1. A method of localized control of heat flux in continuous casting of thin cast strip comprising the steps of: assembling a pair of counter-rotating casting rolls laterally to form a nip between circumferential casting surfaces of the rolls through which metal strip may be cast; forming a casting pool of molten metal supported on the casting surfaces of the casting rolls above the nip to form a casting area; assembling a rotating brush peripherally to contact the casting surface of each casting roll in advance of contact of the casting surfaces with the molten metal in the casting area; removing oxides from the casting surface of each casting roll by contacting the casting surface of each casting roll with the rotating brush; delivering gas at the casting surface adjacent the rotating brush to form a gas layer on the casting surface of each casting roll where the oxides have been removed; and counter-rotating the casting rolls such that the casting surfaces of the casting rolls each travel toward the nip to produce a cast strip downwardly from the nip.