基于水力学模拟试验的3流连铸20t中间包结构优化研究  

A Study on Optimization of a 20 t Tundish Structure for 3-Strands Casting Based on Hydraulic Simulated Test

作　　者：杨凌志[1] 朱荣[1] 李超[1] 林腾昌[1] 吴兵 梁建国 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]莱芜钢铁股份有限公司特殊钢厂,莱芜271104

出　　处：《特殊钢》2015年第1期1-4,共4页Special Steel

摘　　要：采用几何相似比1：2.5的水模型试验研究了带有一字型挡墙,矩形导流孔,水平无倾角的原型中间包以及V形挡墙,倾角0°~40°中80~中120 mm圆形导流孔,并加抑制器的改进结构的流场,得出V字型挡墙＋30°倾角和直径Φ80 mm导流孔＋深盘带唇缘型湍流抑制器的改进中间包结构最优,可延长钢液在中间包内的停留时间,死区体积从原中间包的48.16%~63.06%降至1 0.3%~10.9%,有利于夹杂物的快速上浮。The flow field in original tundish with single-line type retaining wall,rectangular guide-flow-hole and levelno dip angle and in improved tundish with V- type retaining wall,Φ80 ~ Φ120 mm round guide-flow-hole and dip angle0° ~ 40°,and adding turbulence inhibitor has been tested and studied by using geometric similarity 1：2.5 water model.It is obtained that the structure of improved tundish with V- type retaining wall ＋ 30° angle and diameter Φ80 mm guide-flowhole ＋ deep disc-lip type edge turbulence inhibitor is optimal,it may prolong the residence time of liquid in tundish and the percentage of dead zone volume of liquid decreases to 10.3%~ 10.9%from 48.16%~ 63.06%in original tundish,and is in favor of inclusions in liquid to quick floating off.

关 键 词：20t中间包 流场模拟 停留时间分布曲线 湍流抑制器 结构优化 

分 类 号：TF777[冶金工程—钢铁冶金]