1981 Volume 67 Issue 8 Pages 1135-1144
A new equipment has been developed for wide range slab width changing during casting with considerably high moving speed of narrow face by utilizing suitable taper setting of narrow faces in mold. Combination of this technique and sequence casting of different chemical compositions has realized high availability of up to 85% constantly.
On the other hand, the improvement of some equipments and establishment of suitable casting condition have assured satisfactory surface and internal qualities of slab in high casting speed with superior machine characteristics such as multi bending and/or unbending and divided rolls of small diameter. Thus, almost all the casts are directly charged into reheating furnace without any conditioning for the purpose of saving fuel consumption in rolling mill shop. Additionally, typical operational accidents such as break out and nozzle-clogging have been overcome by the improvement of casting technique.
Therefore, Kawasaki Steel Corp. has succeeded in increasing productivity of slab caster remarkably at Mizushima and Chiba Works.