Patent ID: 6453986
Filing Date: 2002-09-24
Classification: B22D

Abstract:
A method of starting-up casting with a twin roll caster, the caster comprising a pair of parallel casting rolls forming a nip between them, an elongate metal delivery nozzle disposed above and extending along the nip between the casting rolls for supplying molten metal into the nip to form a casting pool and comprising an elongate trough with side openings for delivery of molten metal into the casting pool, an entry nozzle for supplying molten metal to the metal delivery nozzle, and a tundish for supplying molten metal to the entry nozzle, the method comprising preheating to a temperature of at least 1000Â° C. the tundish, the metal delivery nozzle and the entry nozzle, positioning the preheated metal delivery nozzle relative to the casting rolls so that it is in its position disposed above and extending along the nip, fitting the preheated entry nozzle to the bottom of the preheated tundish, and lowering the tundish toward the delivery nozzle such that the entry nozzle extends in to the delivery nozzle to enable the supply of molten metal from the tundish to the metal delivery nozzle via the entry nozzle.