Large Billet Continuous Casting Machine Banana Seat Complex Hot Deformation Behavior Analysis

The modern slab caster is composed of crystal section,segment,straightening device,banana-seat which support the fan-shaped section.The support stiffness of the banana-seat decided the accuracy of the fan-shaped section arc.Thus affecting the normal resistance and normal pressure. Therefore, in the production process, banana-seat played a key role to ensure stable operation, Equipment life, Slab surface quality, Slab inside quality.To address the billet continuous casting machine in Steelmaking Plant of Meishan Iron, using the finite element software of Fluent to do the finite element analysis whict about the heat transfer, the thermal radiation, the thermal convection in the process of the slab straightening, and obtained the temperature distribution of the banana-seat in the process of the slab straightening. Finally, it obtained the stress distribution of the banana-seat by using the finite element software of Ansys and the method of hand heat engine coupled. The results will have a good guide for the segment design, the process system and the analysis of slab quality.The major research contents are concluded as the followings:1. Three-dimensional geometric model of the banana-seat:geometric model; geometric model of parts2. Physical model of the banana-seat:constraint model; mechanical and contact model of parts3. Thermal field model of the banana-seat and tests:convective heat transfer model of second-cooling steam; heat transfer model of slab in high temperature radiation; inversion model of structural thermal field4. Numerical simulation and measurement of complicated thermal deformation of the banana-seat:simulation of thermal field5. Key factors and structural optimization analysis of complicated thermal deformation of the banana-seat:key factors analysis of complicated thermal deformation; prevention and inhibition measures for thermal deformation; structural optimization analysis...