东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2006, Vol. 27 ›› Issue (6): 654-657.DOI: -

• 论著 • 上一篇    下一篇

双辊铸轧过程中水口对熔池内温度场和流场的影响

张晓明;赵晓红;刘相华;王国栋;   

  1. 东北大学轧制技术及连轧自动化国家重点实验室;东北大学轧制技术及连轧自动化国家重点实验室;东北大学轧制技术及连轧自动化国家重点实验室;东北大学轧制技术及连轧自动化国家重点实验室 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2006-06-15 发布日期:2013-06-23
  • 通讯作者: Zhang, X.-M.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50474016);;

Influence of submerged nozzle on temperature and flow fields in molten pool during twin-roll strip casting

Zhang, Xiao-Ming (1); Zhao, Xiao-Hong (1); Liu, Xiang-Hua (1); Wang, Guo-Dong (1)   

  1. (1) State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-06-15 Published:2013-06-23
  • Contact: Zhang, X.-M.
  • About author:-
  • Supported by:
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摘要： 双辊铸轧过程中,熔池内金属的流动状态及温度分布直接影响着铸轧过程的稳定性及铸带产品的质量.对双辊铸轧不锈钢过程进行了流热耦合三维有限元分析,主要对浸入式水口出口角度及水口浸入深度对熔池内流场和温度场的影响规律进行研究.研究发现,当水口出口角度大于15°时,熔池内出现双漩涡现象,双漩涡的存在不但改变了熔池内金属流动和溶质分布规律,而且对熔池内的温度场产生影响,使熔池表面温度差异减小,有利于提高铸带表面质量.水口浸入深度增加,熔池表面温度降低;浸入深度过浅,熔池表面温度差异增大,对带钢的表面质量不利,模拟研究结果为合理的水口设计提供了理论依据.

关键词: 双辊铸轧, 温度场, 流场, 流热耦合, 浸入式水口

Abstract: In a twin-roll strip casting process, the metal flow and temperature distribution in molten pool have a direct influence on the stability of this process and the quality of products. Using a 3D finite element coupling analysis of the temperature and flow fields, a numerical simulation of the twin-roll casting of stainless steel was conducted to investigate mainly the effects of the exit angle and depth of a submerged nozzle in molten pool on the two fields. Simulation result showed that when the exit angle of submerged nozzle is greater than 15°, a double-turbulence is found in the molten pool, which not only changes the metal flow and distribution of solutes, but also affects the temperature field in molten pool. Thus the temperature differences among different positions on the surface of molten pool decrease to improve the surface quality of cast strip. When the submerging depth of nozzle increases the surface temperature at molten pool lowers. While the nozzle is submerged shallowly, the temperature differences among different positions on the surface of molten pool increase to damage the surface quality of strip. The simulation result provides a theoretical reference to the reasonable design of the nozzle during twin-roll strip casting.

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