Continuous cast slab head and tail shape pre-controlling method capable of reducing hot-rolled intermediate slab head and tail cutting quantities

摘要

The invention relates to a continuous cast slab head and tail shape pre-controlling method capable of reducing hot-rolled intermediate slab head and tail cutting quantities. According to the method, continuous cast slab head and tail shape pre-controlling cutting is adopted, and a slab is cut into a shape that the head end face dents in wards and the tail end face protrudes out of the slab. Shapes of the head and the tail of the slab are cut in a pre-controlling mode according to curves which are symmetrical around the width central line of the slab, and the height which refers to the maximum of the denting portion of the head or the protruding portion of the tail is controlled in a range of 0mm-50mm. By means of the continuous cast slab head and tail shape pre-controlling method, lengths of uneven deformation portions of the head and the tail of the intermediate slab can be reduced substantially, and the cutting quantities of the head and the tail of the hot-rolled intermediate slab can be reduced.