Numerical simulation of solidification structure of continuously cast bloom of steel 20CrNiMo

Abstract

A model for predicting solidification structure of continuously cast steel was developed using commercial software ProCAST, and verified by the metallographic examination. Later, the effects of operational parameters on microstructure of continuously cast bloom of alloy steel 20CrNiMo were investigated. The results show that the increase of superheat can promote the columnar grain growth and inhibit the central equiaxed grain growth. When superheat increases from 20 K to 35 K, the central equiaxed grain ratio decreases from 17,8 % to 13,5 %.

Keywords

• alloyed steel
• continuously cast bloom
• solidification structure
• metallographic examination
• numerical simulation