Numerical Simulation of Inclusion Movement in the Continuous Casting Slab Mold
Numerical simulation method was used in this article to study the characteristic of the flow field, temperature field and the inclusion movement coupling with the liquid steel solidification in mold. As results shown, solid shell thickness does not distribute uniformly at the cross-section of the mold. The thinnest shells located at the center of the narrow face or the wide face near the corner. Thickness of the solid shell at the wide face increases approximately linearly with the distance from the free surface, but the shell thickness at the narrow face keeps a constant near the impingement point due to the impingement of the molten steel jet. Small inclusions can not be removed effectively in mold. The removal rate of inclusions with diameter of 50μm is only 46％ at the casting speed of 1m/min. Inclusion removal rate has a close relationship with the casting speed and the inclusion size, but has little relationship with the inclusion density. Inclusions tend to float up to the free surface at low casting speeds and with big sizes. Almost all of the inclusions can be removed if only their diameters are larger than 200μm.
mold flow field temperature field inclusion removal rate
ZHAO Jing-jing
School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,100083,China
国际会议
2008 International Symposium on Clean Steel(2008年洁净钢生产技术学术研讨会)
鞍山
英文
169-176
2008-09-17（万方平台首次上网日期，不代表论文的发表时间）