Patent ID: 6915839

Claim:
Method to shear a strip during the casting step as it emerges from a machine for the continuous casting of liquid metal comprising at least a pair of casting rollers, said machine comprising at least cooling means able to achieve the solidification of said strip, characterized in that it provides to increase the casting speed with respect to a speed of a substantially stationary regime, maintaining the value of speed increased for an interval (t 2 −t 1 ), said increase in speed being performed keeping the thickness of said cast strip substantially constant to the value corresponding to the speed of a stationary regime, in order to determine a consequent formation of a liquid core inside said strip at least in its segment passing at increased speed through said cooling means, said liquid core causing the at least partial re-melting of the skin adjacent thereto and the breakage of the strip due to the weight of the part of the strip located under said liquid core.