Prevention of Transverse Corner Cracks on Continuous Casting Slab of Low Carbon Micro-alloyed Steels
In the current study,the effect of the water cooling condition on the slab corner transverse crack was investigated.The microstructure of corner cracks was observed and analyzed.The hot ductility of low carbon micro alloyed steels within 600 ℃ and 1250 ℃ were detected using a thermal simulator Gleeble 1500 to determine the embrittling temperature range of the steel.Three-dimensional models of heat transfer and the solidification of continuous casting slabs were established and solved using C++program to predict the temperature evolution of the slab and to optimize the cooling scheme,in order to prevent the occurrence of the corner cracks.The temperature at the corner of the slab varied greatly with the casting conditions.A new scheme for the water flow rate of every cooling zone was proposed based on the calculated temperature to avoid the embrittling temperature range at the bending and straight zones.After the optimization,the transverse crack was significantly improved.
transverse corner cracks continuous casting slab low carbon micro-alloyed steel
ZHANG Haijie WEN Yang YANG Xiaogang LI Shusen LI Ming WANG Yadong ZHANG Lifeng
School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beij Jiangxi University of Science and Technology,Ganzhou,341000,Jiangxi,China Qianan Steelmaking Co.,Ltd.Shougang Group,Qianan 064404,Hebei,China
国际会议
STEELSIM2017(第七届冶金过程及钢铁材料模拟及仿真国际会议)
青岛
英文
299-303
2017-08-16（万方平台首次上网日期，不代表论文的发表时间）