基于某钢厂的铸机条件,建立了大方坯连铸轻压下的有限元模型,得到了不同压下量和固相率下铸坯表面变化量和压下辊作用范围的规律。结果表明:在一定的压下量范围内,压下后铸坯表面的反弹量约为压下量的19%;压下量每增加1 mm,压下辊的作用范围增加16 mm;固相率每增加0.2,反弹量增加压下量的1.7%;实施轻压下时应该考虑压下的反弹量。 Based on the casting machine condition of a steel mill, a finite element model of continuous casting with light reduction was established. The variation of the surface of the slab under different reduction rates and solidification rates was obtained. The results show that the billet rebound is about 19% of the reduction after a certain amount of reduction, and the rolling range is increased by 16 mm for every 1 mm reduction. The rate of rebound increases by 1.7% of the reduction for every 0.2 increase, and the amount of rebound for depression should be taken into account when performing the reduction.