二流板坯中间包结构优化  

Structure Optimization of Two-strand Slab Tundish

作　　者：张彩军[1] 刘金旺[1] 

机构地区：[1]河北联合大学冶金与能源学院,河北唐山063000

出　　处：《铸造技术》2015年第2期523-526,共4页Foundry Technology

摘　　要：针对某钢厂二流板坯中间包,采用数学模拟和物理模拟相结合的方法对其进行结构优化。数学模拟结果表明,原二流中间包内部控流装置不合理,钢液存在贯穿流和短路流,在中间包内设置湍流控制器和导流墙后,钢液的流动得到明显改善。根据相似原理,建立1∶2.5的物理模型。结果表明:钢液在包内滞留时间、平均停留时间、峰值时间、活塞区体积,分别由原来的26.5 s、178.5 s、268.7 s、13.9%提高到107.5 s、233 s、414.8 s、23.1%;死区体积由原来较大的63.5%变为较小的43.7%。For the two-strand slab tundish of a certain domestic steel plant, the combination of mathematical modeling and physical simulation is used for the structural optimization. The mathematical modeling results show that the control device of original two-strand flow inside the tundish was unreasonable. Run through flow and short circuit flow existed in liquid steel. The flow of liquid steel was significantly improved after setting the turbulent controller and diversion wall in the tundish. A 1：2.5 physical model was established based on similarity principle. It concluded that the residence time of liquid steel in the tundish, the average residence time, peak time and the volume of the piston area increased fi＇om the original 26.5 s, 178.5 s, 268.7 s, 13.9% to 107.5 s, 233 s, 414.8 s, 23.1%, the dead volume decreased from 63.5% to 43.7%.

关 键 词：中间包 结构优化 数学模拟 物理模型 RTD曲线 

分 类 号：TF341.6[冶金工程—冶金机械及自动化]