Direct Hot Charging Process at Kure No. 2 Continuous Caster, Nisshin Steel Co., Ltd.

Abstract

Kure No. 2 Continuous Casting Plant, which was designed to connect steelmaking plant and hot rolling mill directly, has started its operation in July 1982.
Since the start up, the hot charging ratio has been increased under several technical developments. Since 1986, the hot charging ratio has been kept over 70%. The present monthly production is 210000t.
In this paper, the operation of No. 2 CC and techniqes developed for increasing the hot charging ratio are introduced. Main items of the developments are as follows,
1) Technical development for defect free slabs
2) Technical development for increasing slab temperature