摘要
用水力模型和数值模拟方法对高拉速下镀锡板单流中间包流场特性进行研究。水力学模型采用脉冲响应法测定RTD曲线,分析中间包内流动模式;数值模拟应用Fluent商业软件对中间包流场和夹杂物进行模拟分析,并确定优化方案。优化方案中间包钢液平均停留时间由340.7 s增加到545.3 s,增加了60.1%;死区体积比Vd由46.0%降至13.6%,比原方案降低了70.4%;中间包内显微夹杂物和外来夹杂物的去除率大幅提高。
Hydraulic model and numerical simulation had been utilized to study the behavior of single strand tundish field of high speed casting tinplate. RTD curves had been obtained through the hydraulic model using impulse response method. The curves had been used to analyze the flow patterns of the tundish. The numerical simulation had been carried out by a Fluent commercial software to simulate tundish field and inclusion formation. Based on the RTD curve and simulation results a optimized casting plan had been established. The average residence time of the liquid steel has extended from 340.7 s to 545.3 s, increasing by 60.1%, while the dead zone volume ratio has decreased from 46.0% to 13.6%, reducing by 70.4%. With the help of modified casting process, the removal rate of micro inclusions and endogenous inclusions in the tundish has increased significantly.
出处
《钢铁钒钛》
CAS
北大核心
2016年第3期124-130,共7页
Iron Steel Vanadium Titanium
基金
国家自然科学基金资助项目(51474089)
河北省自然科学基金资助项目(E2014209306)
华北理工大学2015年在读研究生创新项目(2015B02)
关键词
中间包
流场
镀锡板
高拉速
水力模型
数值模拟
tundish, field, tinplate, high speed, hydraulic model, numerical simulation
