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›› 2014, Vol. 14 ›› Issue (2): 211-216.

• 流动与传递 • 上一篇    下一篇

双辊薄带铸轧熔池内流场和温度场数值模拟

董建宏 王楠1 陈敏2   

  1. 东北大学材料与冶金学院 东北大学材料与冶金学院 东北大学材料与冶金学院
  • 收稿日期:2014-04-22 修回日期:1900-01-01 出版日期:2014-04-20 发布日期:2014-04-20
  • 通讯作者: 陈敏2

Coupled Numerical Simulation on the Flow and Temperature Fields of Molten Steel Pool in a Twin-roll Strip Caster

DONG Jian-hong WANG Nan CHEN Min   

  1. School of Materials and Metallurgy, Northeastern University School of Materials and Metallurgy, Northeastern University School of Materials and Metallurgy, Northeastern University
  • Received:2014-04-22 Revised:1900-01-01 Online:2014-04-20 Published:2014-04-20
  • Contact: CHEN Min

摘要: 以带宽1000 mm,辊径600 mm的双辊薄带铸轧过程为研究对象,基于Fluent软件,建立了薄带铸轧熔池三维有限体积模型,对其中钢液流动状态及传热进行数值模拟,并考察了新型浇铸系统结构、布流器开孔倾角、铸轧速度、过热度及冷却强度对铸轧AISI304不锈钢熔池的流场和温度场的影响. 结果表明,采用浸入式水口,多孔布流器,导流坝以及分流体组合的新型浇铸系统,且水口浸入布流器熔池内,布流孔向上倾角15o~18o,铸带速度在60~80 m/min,熔池自由液面湍流动能最大值为0.0175 J/kg,熔池表面温差低于20 K,钢液与铸轧辊接触面能稳定形成大于0.6 mm的凝固坯壳.

关键词: 双辊薄带连铸, 铸轧熔池, 流场, 温度场, 数值模拟

Abstract: Based on CFD software Fluent, a three-dimensional finite-volume model was established, and flow and temperature fields in a molten steel pool of a twin-roll strip caster were simulated. The basic characteristics of flow and temperature fields were analyzed, and the effects of delivery system, outlet angle of feeding device, casting speed, and overheating and cooling conditions on the flow and temperature fields investigated for AISI304 stainless steel casting. The results showed that the turbulent kinetic energy had the maximum value of 0.0175 J/kg and temperature gap was within 20 K at the surface when the casting system combined with submerged nozzle, multi-hole feeding device, flow guiding device and distributing device was used under the conditions of feeding inlet submerging in the distributing device pool, outlet upward angle of feeding device at 15°~18° and steel casting speed 60~80 m/min. Meanwhile, over 0.6 mm solidified shell stably formed between the pool and casting roll contacting surface.

Key words: twin-roll strip casting, twin-roll strip caster pool, flow field, temperature field, numerical simulation

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