HUANG J Y,JIN Y,GAN F F,et al. Numerical simulation of the flow field in tundish without dams[J]. Special Casting & Nonferrous Alloys,2024,44(3):328-333.
HUANG J Y,JIN Y,GAN F F,et al. Numerical simulation of the flow field in tundish without dams[J]. Special Casting & Nonferrous Alloys,2024,44(3):328-333. DOI: 10.15980/j.tzzz.2024.03.007.
A mathematical model was established to investigate the influence of nondam on flow field in tundish in a Chinese steel mill, and a water model was adopted to verify the mathematical model. The results indicate that in the tundish with dams, the colliding zones are inner-space of inhibitor and the zone between upper and lower baffles. The tundish without dams operates with large volume of ultra-low-velocity zone, enlarged dead zone and ultra-long residential time. The inhibitor was modified and the diameter of hole was increased to 75 mm and the width was increased to 150 mm, which can reduce dead zone and ultra-low-velocity zone, greatly extending the average residential time. The flux rate of argon blowing in shroud can be increased to 2.5×10
-4
Nm
3
/min without hot eye and slag entrainment, which helps to removal of inclusion. However, inclusion-easy-colliding zone is decreased abundantly after removing the dams in tundish.
关键词
中间包挡墙流场卷渣
Keywords
TundishDamFlow FieldSlag Entrainment
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