Abstract：Based on the round bloom continuous caster， the finite element model of soft reduction was established， it found that the change for transformation of bloom on the various reduction amount. The results show that： 1） the reduction can be passed to the bloom core when solid fraction is above 0.35 and reduction amount of the single roll has to be greater than 10mm. 2）According to the design standard of the continuous caster， when the surface strain value of the slab exceeds 0.015， the surface of the slab is incline to appear cracks， so the maximum reduction of single roll should not exceed 8mm. Therefore， round bloom that be produced in a conventional manner is not suitable for the implementation of the soft reduction process. By adjusting the technological means or adding equipment to facilitate the soft reduction of round billets， it is necessary to study in subsequent work.
2018, Vol. 37 
