Hot Charge of Continuously Cast Slabs

Abstract

Kashima Steel Works has three casters. The products quality of these casters are very high and approximately 150000 tons of products are monthly hot-charged into reheating furnaces to improve energy consumption.
In this paper, the following items are described.
(1) Hot charge of low carbon aluminum killed steel.
Decrease in sub-surface Al₂O₃ inclusion and development of the deburring equipment of slabs.
(2) Hot charge of 40 kg/mm² grade steel.
Decrease in longitudinal cracks of slabs and development of the optical inspection system for hot slabs.