摘要
以薄板坯连铸结晶器为研究对象,采用有限元法,建立了流动、传热、凝固的三维耦合数学模型。重点研究了拉速及双侧孔水口出口面积比对结晶器内自由液面流动情况、铸坯表面温度分布与凝固坯壳生长的影响。结果表明,当拉速由6 m/min减少到4 m/min时,液面波动由±10.5 mm降至±4.5 mm,而结晶器出口处的坯壳厚度将由7.1 mm增加到9.5 mm;当水口出口面积比由1.56增加到2.00时,液面波动由±9.1 mm降至±7.1 mm,出口处的坯壳厚度减薄了0.4 mm。
A three-dimensional mathematical model has been developed for the coupled analysis of fluid flow,heat transfer and solidification in Compact Strip Production(CSP)continuous casting mold by using finite element method.Effects of casting speed and Submerged Entry Nozzle(SEN)area proportion on flow pattern of free surface,temperature distribution on slab surface and the growth of solidifying shell were investigated.The results shows that the level fluctuation of molten steel surface decreases from±10.5 mm to±4.5 mm with casting speed decreasing from 6 m/min to 4 m/min,and the solidified shell thickness at mold exit increases from 7.1 mm to 9.5 mm.When SEN area proportion increases from 1.56 to 2.00,the level fluctuation decreases from±9.1 mm to±7.1 mm,and the shell thickness at mold exit reduces by 0.4 mm.
作者
张剑君
王子超
刘青
窦坤
ZHANG Jian-jun;WANG Zi-chao;LIU Qing;DOU Kun(Baosteel Central Research Institute(Qingshan),Wuhan 430080,Hubei,China;School of Metallurgy and Environment,Central South University,Changsha 410083,Hunan,China;State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China)
出处
《连铸》
2023年第1期82-88,共7页
Continuous Casting
基金
国家重点研发计划“先进结构与复合材料”重点专项资助项目(2021YFB3702400)
北京科技大学钢铁冶金新技术国家重点实验室开放基金资助项目(K22-07)。
关键词
CSP
数值模拟
流动
传热
凝固
CSP
numerical simulation
fluid flow
heat transfer
solidification
