Numerical Simulation of Heat Transfer and Solidification in X80 Slab

The solidification mathematical model was established by using X80 steel slab.The variationof the temperature and solidification rate of the 230 mm×1 280 mm X80 pipeline steel slab was simulated during the solidification process under different continuous casting process conditions.The effects of superheat,casting speed and cooling water on the solidification process of slab were studied.The results showed that the superheat had little effect on the solidification of the slab.With increasing of the superheat,the surface temperature of the slab increased andliquid pool length increased,while the length of two-phase zone decreased.The casting speed has the greatest effect on slab solidification The surface temperature,liquid pool length and the length of two-phase zone were all increased with the increase of the casting speed.Whenthe water ratio was increased,the surface temperature of the slab and liquid pool length decreased.