| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Defects and Properties of Cast Metals
|
| Presentation Title |
Multiphase Flow-related Defects in Continuous Casting of Steel Slabs |
| Author(s) |
Seong-Mook Cho, Mingyi Liang, Hamed Olia, Lipsa Das, Brian G. Thomas |
| On-Site Speaker (Planned) |
Seong-Mook Cho |
| Abstract Scope |
Multiphase flow phenomena greatly affect the quality of continuous cast steel. Instability at the interface between the molten steel and surface slag is caused by jet wobbling, resulting in sudden level drops and slag entrapment into the solidifying shell at the meniscus of the continuous casting mold, causing surface defects. In addition, excessive surface velocity can entrain the surface slag into the steel pool. Furthermore, particles such as argon gas bubbles, alumina inclusions and entrained slag can be transported by unoptimized flow and captured into the solidification front deep in the strand, especially into the inside radius of curved strands, leading to internal defects. This work applies three-dimensional computational fluid dynamics modeling using volume of fluid model (VOF), discrete phase model (DPM), and particle capture models, validated with plant measurements, to quantify the above defect formation mechanisms relevant to multiphase flow phenomena in continuous slab casting. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |