Central Segregation Improvement of No. 3 Bloom Caster at China Steel

摘要

No. 3 bloom caster at China Steel (CSC) was not allowed to produce high carbon steels such as AISI 1082 due to central segregation. Many technologies and caster modifications were implemented to No. 3 bloom caster to improve the central segregation. The methods adapted were soft reduction with convex rollers, enhancement of the Mold Electromagnetic Stirrer (M-EMS) performance, optimization of the secondary cooling system, reinforcement of the frame structure of the withdrawing stand, and stabilization of the hydraulic system. After the implementation of the new technology, the central segregation C/C0 is steady and reduced significantly below 1.1.