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采用FLUENT对某钢厂八流T形中间包不同挡渣墙上导流孔的设计形式进行了模拟研究,计算了不同工况设置下中间包内的流场、温度场、钢液的停留时间分布,以及对夹杂物的捕获情况。结果表明:增大导流孔孔径和导流孔上倾角度,有利于均匀中间包温度场。增加导流孔的上倾角度可显著提升中间包夹杂物的去除率,这种效果比改变导流孔孔径对夹杂物去除率的影响更显著。综合计算结果分析,导流孔孔径为100 mm、上倾角度为25°时,中间包的冶金效果较优。
FLUENT was used to simulate the design forms of diversion holes in different tidal tundish of a T-shaped tundish in a steel mill. The flow field, temperature field and dwell time of molten steel under different working conditions were calculated Distribution, and the capture of inclusions. The results show that increasing the diameter of the guide hole and the angle of the diversion hole is beneficial to the uniform tundish temperature field. Increasing the upward inclination angle of the diversion hole can significantly improve the removal rate of inclusions in the tundish, which is more significant than changing the diameter of the diversion hole on the inclusion removal rate. According to the comprehensive calculation results, the metallurgical effect of tundish is better when the diameter of diversion hole is 100 mm and the inclination angle is 25 °.