Multiphase Flow and Thermo-Mechanical Behaviors of Solidifying Shell in Continuous Casting Mold

• Published in: Journal of iron and steel research, international international, 2013-03, Vol.20 (3), p.6-17
• Main Authors: ZHU, Miao-yong, CAI, Zhao-zhen, YU, Hai-qi
• Format: Article
• Language: English
• Subjects: Applied and Technical Physics; Continuous casting; continuous casting mold; Engineering; heat transfer; Iron and steel industry; Machines; Manufacturing; Materials Engineering; Materials Science; Mathematical models; Metallic Materials; Mold fluxes; Molds; Multiphase flow; numerical simulation; Physical Chemistry; Processes; Shells; solidification; Steels; 元素偏析; 凝固壳; 多相流; 数值模拟; 机械耦合; 热机械行为; 电磁制动器; 连铸结晶器
• ISSN: 1006-706X; 2210-3988
• DOI: 10.1016/S1006-706X(13)60062-X

The metallurgical phenomena occurring in the continuous casting mold have a significant influence on the performance and the quality of steel product. The multiphase flow phenomena of molten steel, steel/slag interface and gas bubbles in the slab continuous casting mold were described by numerical simulation, and the effect of electromagnetic brake (EMBR) and argon gas blowing on the process were investigated. The relationship between wavy fluctuation height near meniscus and the level fluctuation index F, which reflects the situation of mold flux entrapment, was clarified. Moreover, based on a microsegregation model of solute elements in mushy zone with δ/γ transformation and a thermo-mechanical coupling finite element model of shell solidification, the thermal and mechanical behaviors of solidifying shell including the dynamic distribution laws of air gap and mold flux, temperature and stress of shell in slab continuous casting mold were described.