|About this Abstract
||Liquid Metal Processing & Casting Conference (LMPC 2019)
||Liquid Metal Processing & Casting
||Formation of Central Semi-macro Segregation and its Minimization by Soft Reduction during the Continuous Casting of Heavy and Wide Slab
||Min Jiang, En-Jiao Yang, Zhi-Gang Xu, Xin-Hua Wang
|On-Site Speaker (Planned)
Formation of semi-macro segregation in heavy and wide slab was discussed in present work. Central segregation in slab was composed of independent semi-macro spots. It increased with the rise of super heat and was more concentrated because of well growth of column grains. By comparison, well-developed equiax grains helped to scattered such semi-macro spots. However, with the use of soft reduction, central segregation peaks were lower at higher super heat, implying that the segregation was more effectively minimized under developed column grains. The relationship between central semi-macro segregation and solidification microstructure was discussed. Moreover, effect of solidification microstructure on the efficiency of soft reduction was elucidated. Based on these findings, continuous casting process of the heavy and wide slab was improved and quality of the cast products were greatly enhanced.
||Definite: At-meeting proceedings