八流中间包结构优化水模型试验研究

Water modeling experiment research on structural optimization of eightstrand tundish

基于邯钢第一炼钢厂八流中间包结构,采用1∶3模型对中间包进行了水模拟试验研究,通过对不同控流装置下各流的RTD曲线分析,对中间包结构进行了优化。研究结果表明:通过V形挡墙开孔方向往轴向调整,缩短了边流的响应时间,提高了各流同步性;通过两侧各设置双低坝,配合挡渣墙,使中部两流停留时间延长;采用优化后的"新挡墙+稳流器+双低坝"结构,有效延长了中间包钢水平均停留时间,减小了死区体积,各流的开始响应时间延长,各流RTD曲线峰值时间相差减小,有利于温度场的均匀化。

Based on the size of ratio 1 ∶ 3 of the tundish in The 1^（st） Plants of Hansteel,the water modeling experimental research of an eight-strand tundish was investigated.According to the RTD curves analysis of flow distribution under various flow control devices,the structure of the tundish was optimized.By adjusting V shape wall hole to the axial direction,the response time of edge flow was reduced and the various flow synchronization was improved.Through setting the double low dam on each side,matched with V shape wall,the reserved time of central two stands was prolonged.The optimized structure ＂new wall ＋ current stabilizer ＋ double low dam ＂ was used,the average reserved time of steel in tundish was effectively prolonged,the dead zone volume was reduced,the initial response time of each flow was delayed,the RTD curve peak time difference of eight flow decreased,and it benefitted for uniformity of steel temperature in tundish.