Characteristics of shell thickness in a slab continuous casting mold  

作　　者：Di-feng Wu Shu-sen Cheng Zi-jian Cheng 

机构地区：[1]School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China [2]Steelmaking Plant, Jiuquan Iron and Steel Co. Ltd., Jiayuguan 735100, China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2009年第1期25-31,共7页矿物冶金与材料学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.60672145)

摘　　要：The key to reduce shell breakout in the continuous casting process is to control shell thickness in the mold. A numerical simulation on the turbulent flow and heat transfer coupled with solidification in the slab mold using the volume of fluid （VOF） model and the enthalpy-porosity scheme was conducted and the emphasis was put upon the flow effect on the shell thickness profiles in longitudinal and transverse directions. The results show that the jet acts a stronger impingement on the shell of narrow face, which causes a zero-increase of shell thickness in a certain range near the impingement point. The thinnest shell on the slab cross-section locates primarily in the center of the narrow face, and secondly near the comer of the wide face. Nozzle optimization can obviously increase the shell thickness and make it more uniform.The key to reduce shell breakout in the continuous casting process is to control shell thickness in the mold. A numerical simulation on the turbulent flow and heat transfer coupled with solidification in the slab mold using the volume of fluid （VOF） model and the enthalpy-porosity scheme was conducted and the emphasis was put upon the flow effect on the shell thickness profiles in longitudinal and transverse directions. The results show that the jet acts a stronger impingement on the shell of narrow face, which causes a zero-increase of shell thickness in a certain range near the impingement point. The thinnest shell on the slab cross-section locates primarily in the center of the narrow face, and secondly near the comer of the wide face. Nozzle optimization can obviously increase the shell thickness and make it more uniform.

关 键 词：continuous casting slab mold shell thickness nozzle optimization 

分 类 号：P575.4[天文地球—矿物学] TF1[天文地球—地质学]