Patent ID: 6092586
Filing Date: 2000-07-25
Classification: B21B,C21D

Abstract:
A method for producing hot rolled steel strip from continuously cast semi-finished steel, comprising the steps of:converting molten steel into continuously cast semi-finished steel strip in a stationary continuous casting machine;feeding the continuously cast semi-finished steel strip directly from the continuous casting machine to a continuous hot-rolling mill such that a thickness h.sub.o in meters of the semi-finished steel strip and a casting speed of v.sub.c in meters per minute are in accordance with the following relationship,h.sub.o .multidot.v.sub.c >0.487 m.sup.2 /min;andproducing a final thin strip from said semi-finished steel strip using a primary heat in the semi-finished steel strip from said continuous casting machine by running the semi-finished steel strip through the hot-rolling mill having at least n number of roll stands in accordance with the relationship,n=0.51+3.29 lg.sub.10 (h.sub.o),where h.sub.o is the thickness in centimeters of the semi finished steel strip.