双通道感应加热中间包控流装置模拟优化  

Optimization of flow control device on twin channel induction heating tundish by simulation

作　　者：高文星 袁己百 赫俊峰 梁日成 李源源 Gao Wenxing;Yuan Jibai;He Junfeng;Liang Richeng;Li Yuanyuan(Engineering Design Department,WISDRI CCTEC Engineering Co.,Ltd.,Wuhan 430073,Hubei,China;Special Steel Department of Bensteel Co.,Ltd.,Benxi 117000,Liaoning,China;Steelmaking Plant of Guangxi Iron and Steel Group Co.,Ltd.,Fangchenggang 538000,Guangxi,China)

机构地区：[1]中冶南方连铸技术工程有限责任公司工程设计部,湖北武汉430073 [2]本钢板材股份有限公司特殊钢事业部,辽宁本溪117000 [3]广西钢铁集团有限公司炼钢厂,广西防城港538000

出　　处：《钢铁钒钛》2023年第3期144-151,共8页Iron Steel Vanadium Titanium

基　　金：国家自然科学基金资助项目(52004191)。

摘　　要：为解决双通道感应加热中间包原型死区体积比大,平均停留时间短,各铸流差异性大的问题,设计了不同导流孔方案的挡墙和加热通道,并通过数值模拟中间包的流场和温度场。结果表明,在中间包内设挡墙可以很好地改善钢液流动状况。A2方案(八字型挡墙上开两个导流孔,孔径130 mm,与挡墙水平倾角5°,下孔仰角25°,上孔仰角15°)平均停留时间延长了207.2 s,死区体积降低了23.89个百分点,边部水口与中间水口的最大温差为3℃。椭圆跑道型加热通道(E2方案)对中间包加热效果更好。通过生产实践证明边部水口与中间水口的最大温差约为3~4℃,优化的控流装置改善了中间包的流动性和差异性。In order to solve the problems of low volume utilization,short average residence time and poor consistency of each flow of the twin channel induction heating tundish without flow control devices,weirs with different diversion holes and heating twin channels were designed.The flow field and temperature field of tundish are simulated by numerical simulation and water simulation.Simulation results show that the flow of molten steel can be improved by setting a wall in the tundish.For Scheme A2(two diversion holes are opened on the splayed wall,with diameter of 130 mm and a horizontal inclination of 5°to the retaining wall,an elevation of 25°for the lower hole and 15°for the upper hole),the average residence time is extended by 207.2 s,the dead zone volume is reduced by 23.89%,and the maximum temperature difference between the edge nozzle and the middle nozzle is 3 C.Scheme E2(Runway type heating twin channel)can achieve better heating effect on tundish.The production practice has proved that the maximum temperature difference between the edge water outlet and the middle water outlet is about 3~4℃.The optimized flow control device improves the fluidity inside the tundish.

关 键 词：中间包 感应加热 控流装置 温度场 流场 

分 类 号：TF777.1[冶金工程—钢铁冶金]