Patent ID: 7168478
Filing Date: 2007-01-30
Classification: B22D

Abstract:
1. A method of producing thin cast strip by continuous casting, said method comprising: assembling a twin-roll caster having a pair of casting rolls forming a nip between said casting rolls; assembling a drive system for said twin-roll caster capable of individually driving said casting rolls and maintaining an alignment angle between said casting rolls; assembling a metal delivery system capable of forming a casting pool between said casting rolls above said nip and having side dams adjacent to an end of the nip to confine said casting pool; introducing molten metal between said pair of casting rolls to form said casting pool supported on casting surfaces of said casting rolls and confined by said side dams; counter-rotating said casting rolls to form solidified metal shells on said surfaces of said casting rolls and to cast strip from said solidified shells through said nip between said casting rolls; and modifying said alignment angle between said casting rolls such that eccentricities between said casting rolls are reduced to form cast strip having a more uniform thickness.