Transient Fluid Flow Phenomena during Continuous Casting: Part II—Cast Speed Change, Temperature Fluctuation, and Steel Grade Mixing

Many complicated phenomena are associated with transient stages during the continuous casting process, especially inside the casting mold cavity. A deep understanding of the phenomena and optimized control over the process ensure the high quality product and low costs. This work presents a three-dimensional numerical simulation of transient fluid flow phenomena during steel continuous casting. In the Part II, the process of casting speed change (increase or decrease), temperature fluctuation, and steel grade mixing in a slab mold were investigated. The phenomena, such as flow pattern, inclusion removal fraction, temperature variation, top surface profile, and steel transportation, were addressed to evaluate the process and enhance product quality.

[1]  Brian G. Thomas,et al.  Modeling of Transient Flow Phenomena in Continuous Casting of Steel , 1998 .

[2]  Y. Sahai,et al.  Mathematical modelling of transport phenomena in continuous casting tundishes. I: Transient effects during ladle transfer operations , 1992 .

[3]  Brian G. Thomas,et al.  Comparison of Four Methods to Evaluate Fluid Velocities in a Continuous Slab Casting Mold , 2001 .

[4]  J. M. Camplin,et al.  Mathematical Modelling of Thermal Stratification and Drainage of Steel Ladles , 1992 .

[5]  D. Stefanescu,et al.  Particle engulfment and pushing by solidifying interfaces: Part II. Microgravity experiments and theoretical analysis , 1998 .

[6]  S. Taniguchi,et al.  Fundamentals of inclusion removal from liquid steel by bubble flotation , 2000 .

[7]  Mehdi Alizadeh,et al.  Behavior of Mixed Grade during the Grade Transition for Different Conditions in the Slab Continuous Casting , 2008 .

[8]  In Cheol Kim,et al.  Simple Tundish Mixing Model of Continuous Casting during a Grade Transition , 2006 .

[9]  Roderick I. L. Guthrie,et al.  Coupled turbulent flow, heat, and solute transport in continuous casting processes , 1995 .

[10]  Xinhua Wang,et al.  Influence of Casting Speed Variation during Unsteady Continuous Casting on Non-metallic Inclusions in IF Steel Slabs , 2006 .

[11]  Manabu Iguchi,et al.  Model Study on the Entrapment of Mold Powder into Molten Steel , 2000 .

[12]  E. Loth.  Numerical approaches for motion of dispersed particles, droplets and bubbles , 2000 .