Patent ID: 7891407
Filing Date: 2011-02-22
Classification: B22D

Abstract:
1. A method of 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 casting 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 with a protective atmosphere, assembling a rotating cleaning brush such that the periphery of the brush contacts the casting surface of each casting roll between the nip and the casting area, 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, removing oxides from the casting surface of each casting roll by contacting the casting surface of each casting roll with the rotating cleaning brush, determining temperatures of at least one casting roll in segments along the casting surface of the casting roll, of the cast strip in segments laterally across the strip adjacent the nip, or a combination thereof, and delivering gas adjacent the casting surface regulated by segment adjacent the nip of the cleaning brush in segments corresponding to the temperature determined in each segment.