Effect of Diversion Hole on Flow Trajectory of Steel in Multi-Strand Tundish
LI Yi-hong1,2, BAO Yan-ping 1,2, ZHAO Li-hua 1,2, SHEN Xiao-wei1,2
1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083，China 2. School of Metallurgical and Ecological Engineering , University of Science and Technology Beijing, Beijing 100083, China
Abstract：Water model experiment was adopted to study the effect of diversion hole with different direction and area on flow trajectories of liquid steel and difference of multi-stand. Furthermore, the contrast test between the original and new tundish was carried out in the plate, the effect of flow behavior of steel on removal rate of inclusions was also investigated. The result show that: in order to make full use of space of liquid steel in tundish and uniformity of each nozzle flow, diversion hole should be divided into main hole and revision hole. The end of vector of flow direction of main hole should be in the middle of vertical line of tie line of strand 1 and strand 2, the diameter of main hole should be 48 to 52 mm; and the end of vector of flow direction of revision hole should be 175 mm to 220 mm away from first-top point of longitudinal wall and the steel flow of outlet at the end of casting should be satisfied with proper area of revision hole. When diversion hole is utilized, the average resident time of steel increases by 25%, the amount of macro inclusions in slab decreases by 64.2%; plug volume of steel increases by 50%, the difference between strand 1 and 2 decreases by 60%, [wT[O]] in tundish decreases by 16.4%.
李怡宏 包燕平 赵立华 申小维 . 多流中间包导流孔对钢液流动轨迹的影响[J]. 钢铁, 2014, 49(6): 37-42.
LI Yi-hong,, BAO Yan-ping ,, ZHAO Li-hua ,, SHEN Xiao-wei,. Effect of Diversion Hole on Flow Trajectory of Steel in Multi-Strand Tundish. Iron and Steel, 2014, 49(6): 37-42.
2014, Vol. 49 
