Numerical Simulation of the Flow Field in an Ultrahigh-Speed Continuous Casting Billet Mold

Ultrahigh-speed continuous casting is a critical element in achieving high-efficiency casting. In the present work, three-dimensional model of 160 mm × billet ultrahigh-speed mold was developed for use studying influences different parameters on molten steel flow. The results showed that flow pattern not associated with its speeds, submerged entry nozzle (SEN) immersion depths, or inner diameters. Variation speeds significantly affected liquid level steel–slag interface. Its fluctuation reasonable at an SEN depth 80 mm. impact reached shallowest point, which conducive to upward movement within high-velocity and high-temperature regions, accelerated floating non-metallic inclusions. Expanding diameter could effectively weaken initial kinetic energy jet. However, it may cause deeper degree raceway, exhibited jet most behavior 40