连铸中间包控流装置优化研究与实践  

Study and practice on optimization of the flow control device of continuous casting tundish

作　　者：陈伟[1,2] 苏鹤洲 施哲[1] 

机构地区：[1]昆明理工大学材料与冶金工程学院,云南昆明650093 [2]昆明钢铁股份公司技术中心,云南昆明650302 [3]昆明钢铁股份公司技术中心云南昆明,650302

出　　处：《炼钢》2009年第1期28-32,共5页Steelmaking

摘　　要：通过水力学模拟试验,研究了昆钢7号方坯铸机中间包采用多孔挡墙时的钢水流动特征。研究结果表明:中包采用多孔挡墙时,各流流动特征趋于一致,流体初次响应时间、平均停留时间增大,死区体积减小,中包冶金效果得到明显改善,3号多孔挡墙为最佳方案。试验结果应用于生产后,铸坯质量得到明显改善,TS800U铸坯非金属夹杂物出现率由52%降至3.5%。The flow field behavior of tundish with multi-hole dam in the No. 7 billet caster of KISC is researched by hydraulic simulation experiment. Results show that the flow characteristics of every flow in tundish tend to be similar, the initial response time and average residence time of fluid increase, the volume of dead zone decreases and the met- allurgical effect of tundish is improved obviously by setting up the multi-hole dam. The design plan of the No. 3 multi-hole dam is assumed to be the preferred one. Since application of the experimental results into production the quality of billet has been improved clearly and the non-metallic inclusions of TS800U billet decreased from 52% to 3.5%.

关 键 词：水模试验 多孔挡墙 中包冶金 非金属夹杂物 

分 类 号：TF777.2[冶金工程—钢铁冶金]