Research Status of High Speed Slab Continuous Casting Technology

Author of the article:CHEN Yang1 , WANG Fang2 , WEI Min1 , ZHANG Jiongming3 , LI Fushuai1 , CHEN Zhiling1 , LI Xiujie1 , WANG Xuesi1

Author's Workplace：1. CCTEC Engineering Co., Ltd., Wuhan 430073, China; 2. Faculty of Humanities, Wuhan University of Engineering Science, Wuhan 430200, China; 3. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China

Key Words：high casting speed; slab continuous casting; FC mold; liquid level fluctuation; precise control of secondary cooling

Abstract：When casting narrow sections or producing high quality steel grades by conventional slab caster, the pouring cycle is forced to be prolonged, and it is difficult to achieve matching of the furnace and caster, which seriously restricts the production capacity of steelmaking workshops. Therefore, it is urgent to improve the productivity of caster, and high casting speed has become an important development direction of modern continuous casting. This paper reviews the development history of high speed slab continuous casting technology at home and abroad, summarizes the technical characteristics of high speed continuous casting, and focuses on the high efficiency strong cooling mold, nonsinusoidal oscillation, molten steel flow control, mold powder, FC (flow control) mold, secondary cooling precision control and other key technologies, which are used to solve the technical problem of stable production of slabs with high casting speed. The realization of high casting speed is a comprehensive technology integrating technology, equipment, production operation and automatic control.