钢包浇注过程汇流旋涡的物理实验  

Physical Modeling Test of Vortex During Teeming from Ladle

作　　者：蔺瑞[1] 颜正国[1] 于景坤[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2010年第9期1287-1291,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50904016)

摘　　要：为了减小钢包浇注后期旋涡卷渣对钢材带来的危害,对某钢厂现有60 t钢包进行了水力学模拟实验,研究了静置时间、初始液位、水口直径、水口偏心率等因素对旋涡的影响.结果表明:静置时间为0时,产生的旋涡方向不能确定,但随着静置时间的延长,旋涡方向变为逆时针;随着初始液位的升高,旋涡趋向于逆时针;水口直径对旋涡方向的影响不大;随着水口偏心率的增大,旋涡产生位置偏于水口正上方,且方向变得不明确;在没有外界因素干扰时,科氏力是引起流体旋涡的主要原因.To reduce the impact of slag entrapment due to vortex on the strip quality at the end of teeming from refining ladle,some main influencing factors on vortex during liquid steel draining operation from ladle were studied via hydraulic simulation test,such as resting time,initial liquid level,nozzle diameter and eccentricity.It can be concluded that the rotary direction of vortex is uncertain with no resting time,but the vortex rotates anticlockwise with the resting time prolonged and it tends to rotate anticlockwise with rising initial liquid level. The nozzle diameter has no obvious effect on the rotary direction of vortex.With the increasing nozzle eccentricity,the vortex is found right above the nozzle and its rotary direction becomes indefinite.The Coriolis force is the basic factor causing the vortex if there are no other external influencing factors.

关 键 词：钢包 浇注过程 汇流旋涡 旋转方向 水力学模拟 

分 类 号：TF775[冶金工程—钢铁冶金]