Comparison of the casting process of 3.0% Si steel between the top side-pouring twin-roll casting and twin-roll strip casting

Three-dimensional finite element modeling of twin-roll strip casting (TRC) and the top side-pouring twin-roll casting (TSTRC) were carried out to predict the temperature, flow, and turbulence kinetic energy of the two processes. The cellular automaton–finite element (CA-FE) model was established to predict the solidification structure of the two processes. By comparing the two processes, it was found that the temperature field distribution in the micro-melt pool during the TSTRC process was uniform. The temperature distribution in the width direction was also more uniform, and the stirring in the micro melt-pool was intense. An equiaxed crystal structure uniformly distributed in the width direction was obtained, and a thin strip of good quality was obtained. Not only the near-final forming of the thin strip was realized, but also the near-final forming of the solidified structure was realized. By comparing the experimental process of TSTRC with the simulation, it was found that the simulation and experimental results were in good agreement, which verified the feasibility and accuracy of the simulation.