|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Defects and Properties of Cast Metals IV
||Particle Capture Defects in Continuous Steel Casting
||Seong-Mook Cho, Brian G. Thomas
|On-Site Speaker (Planned)
Many defects such as blisters and slivers in the final steel products manufactured from continuous casting originate from particles captured by the solidifying steel shell in the mold and strand regions. Captured particles include argon gas bubbles injected to prevent nozzle clogging, slag droplets entrained into the molten steel, or non-metallic inclusions from upstream processes. In this work, three-dimensional computational fluid dynamics simulations of transport and capture of particles in the molten steel flow during continuous steel-slab casting are conducted using an advanced capture criterion to simulate entrapment of small particles between the primary dendrite arms and engulfment of large particles by the growing dendrites. The model predictions are validated with plant measurements including ultrasonic testing measurements and step milling measurements. The capture behavior of argon gas bubbles in surface solidification and inclusions in internal solidification are revealed to understand defect formation related to particle capture in continuous steel casting.
||Iron and Steel, Modeling and Simulation, Solidification