水口结构对板坯结晶器流场的影响  

Effect of submerged entry nozzle structure on fluid field in the slab casting mold

作　　者：李东侠[1] 刘洋[1] 崔衡[1,2] 

机构地区：[1]北京科技大学冶金工程研究院,北京100083 [2]北京市交通与能源用特殊钢工程技术研究中心,北京100083

出　　处：《钢铁研究》2015年第4期19-22,共4页Research on Iron and Steel

基　　金：中央高校基本科研业务费专项资金资助项目(FRF-TP-14-102A2)

摘　　要：采用水模拟及PIV粒子测速系统,研究了不同水口结构对板坯结晶器流场的影响。结果表明:该试验条件下,凸底水口射流区平均速度较大,约为0.65m/s,凹底工况约为0.50m/s,水口倾角对上、下回旋区钢液流股影响较大,6种水口结构中,凹底向下15°水口结构液面波动较缓,窄面附近液面稳定,流场分布较为均匀稳定,较为适合现场浇铸。Water modeling and PIV （particle image velocimetry） were used to study the effects of different SEN in the slab casting mold. The results showed that. under the circumstance of the model, the average flow velocity （about 0. 65 m/s） in the jet region for the convex bottom SEN was larger than the concave bottom SEN （about 0. 50 m/s）. The angle of SEN had effects on the flows in the up and down circumfluence zones. Among the six SENs, the concave bottom SEN with the angle of 15% down was more suitable for industrial production, because of its abilities in reducing the liquid steel level fluctuation and keeping the stability of the fluid field in this slab mold.

关 键 词：结晶器 浸入式水口 水模型 

分 类 号：TF777[冶金工程—钢铁冶金]