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以相似原理为基础,建立1:3的水模型,对涟钢二流板坯连铸中间包进行研究。结果表明,单纯的湍流控制器+挡坝,中间包活塞区体积偏小,死区体积偏大;挡坝开孔能使中间包死区减小,而不会产生明显的短路流;有利于改善中间包钢液流动的控流装置组合为挡堰+开孔挡坝+湍流控制器,得出了其具体位置;优化后的中间包平均停留时间由343 s延长至387 s,死区体积由20.0%下降至9.8%,滞止时间由61 s延长至99 s。
Based on the similar principle, a 1: 3 water model was established to study the second-rate slab continuous casting tundish in Lianyuan Iron and Steel. The results show that the volume of piston area in the tundish is smaller and the volume of dead zone is larger due to the simple turbulence controller + dams. The ditches of the dams can reduce the dead zone of the tundish without obvious short circuit flow; The combination of flow control device to improve the flow of molten steel in the tundish is a weir + open baffle + turbulent controller, and the specific position of the flow control device is obtained. The average residence time of the optimized tundish is prolonged from 343 s to 387 s, From 20.0% down to 9.8%, the stagnation time from 61 s to 99 s.