圆坯连铸结晶器流场模拟研究  

Research on Flow Field Simulation of Round Billet Continuous Casting Mold

作　　者：金友林[1] 赵振南 张峻纲 武鸿杰 凌海涛 徐其言 JIN Youlin;ZHAO Zhennan;ZHANG Jungang;WU Hongjie;LING Haitao;XU Qiyan(Special SteelCompany,Maanshan Iron and SteelCo.,Ltd,Maanshan 243000,China;School ofMetallurgical Engineering,Anhui University of Technology,Maanshan 243032,China)

机构地区：[1]马鞍山钢铁股份有限公司特钢公司,安徽马鞍山243000 [2]安徽工业大学冶金工程学院,安徽马鞍山243032

出　　处：《安徽工业大学学报（自然科学版）》2022年第3期250-255,共6页Journal of Anhui University of Technology（Natural Science）

基　　金：国家自然科学基金项目(51704005);安徽省自然科学基金项目(1808085QE165)。

摘　　要：以某钢厂Φ450 mm圆坯结晶器为原型,进行结晶器水模拟实验,研究拉速、水口插入深度、吹气流量对结晶器内液面波动、流场及卷渣的影响,确定结晶器最佳工艺操作参数。结果表明:吹气流量的增加及水口插入深度的减小会加剧结晶器内液面波动,增大卷渣发生几率;固定吹气流量和水口插入深度,拉速在0.40~0.46 m/min范围内变化时,其对结晶器流场的影响不明显;无论是在当前拉速(0.40 m/min)还是在提拉速(0.42,0.44,0.46 m/min)下,结晶器最佳工艺操作参数为水口插入深度不低于140 mm、吹气流量不高于1.12 L/min。Taking the round billet mold ofΦ450 mm in a steel plant as the prototype,the water simulation experiment of mold was carried out to study the effects of drawing speed,nozzle immersion depth and blowing flow on the liquid level fluctuation,flow field and slag entrainment in the mold,and to determine the best process operation parameters of the mold.The results show that the increase of blowing flow and the decrease of nozzle insertion depth will aggravate the fluctuation of liquid level in the mold and increase the probability of slag entrapment.When the blowing flow rate and nozzle insertion depth are fixed and the pulling speed changes in the range of 0.40-0.46 m/min,its influence on the mold flow field is not obvious.Whether at the current drawing speed(0.40 m/min)or at the lifting speed(0.42,0.44,0.46 m/min),the best process operating parameters are that the nozzle insertion depth is not less than 140 mm and the blowing flow is not more than 1.12 L/min.

关 键 词：圆坯 结晶器 拉速 插入深度 吹气流量 流场 

分 类 号：TF777.1[冶金工程—钢铁冶金]