东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (12): 1733-1737.DOI: 10.12068/j.issn.1005-3026.2014.12.014

• 材料与冶金 • 上一篇    下一篇

板坯连铸结晶器内渣/金界面非稳态波动行为

刘中秋, 齐凤升, 李宝宽, 姜茂发   

  1. (东北大学 材料与冶金学院, 辽宁 沈阳110819)
  • 收稿日期:2013-11-27 修回日期:2013-11-27 出版日期:2014-12-15 发布日期:2014-09-12
  • 通讯作者: 刘中秋
  • 作者简介:刘中秋(1986-),男,河北唐山人,东北大学博士研究生; 李宝宽(1963-),男,辽宁辽阳人,东北大学教授,博士生导师; 姜茂发(1955-),男,山东栖霞人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金重大国际(地区)合作研究项目(51210007); 国家自然科学基金青年科学基金项目(51004029).

Unsteady Fluctuation Behavior of Slag-Metal Interface in a Slab Continuous Casting Mold

LIU Zhong-qiu, QI Feng-sheng, LI Bao-kuan, JIANG Mao-fa   

  1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China.
  • Received:2013-11-27 Revised:2013-11-27 Online:2014-12-15 Published:2014-09-12
  • Contact: LI Bao-kuan
  • About author:-
  • Supported by:
    -

摘要: 采用VOF法对板坯连铸结晶器内渣/金界面的非稳态波动行为进行研究,使用几何重建方案模拟连铸结晶器内渣/金界面的运动形态.分析了拉速、水口插入深度和倾角对连铸结晶器内渣/金界面波动的影响.结果表明,在浇注初期,渣/金界面的波动幅度较小;随着时间的发展,渣/金界面的波动幅度不断增大;达到动态稳定后水口附近的渣/金界面会出现不规则的锯齿状波动.漩涡的不稳定性是造成渣/金界面锯齿状波动的原因.随着拉速的增大,渣/金界面波动加剧;随着水口插入深度和倾角增大,渣/金界面波动减弱.

关键词: 连铸结晶器, 非稳态, VOF法, 渣/金界面, 波动

Abstract: The unsteady fluctuation behavior of the slag-metal interface in a slab continuous casting mold was studied using the volume of fluid(VOF)method. The morphology of the meniscus was simulated using the geometric reconstruction scheme. The effects of casting speed, immersion depth and port angle of submerged entry nozzle(SEN) on the interface fluctuation in the mold were studied. The results show that the interface fluctuation is ever changing with time. The fluctuation is small and increases with time at the beginning of the casting. After attaining dynamic steady state, serrated fluctuation phenomenon appears around the SEN. The reason for the serrated fluctuation is the existence of vortices. The fluctuation increases with increasing the casting speed, and decreases with increasing the immersion depth and port angle of the SEN.

Key words: continuous casting mold, unsteady state, VOF method, slag-metal interface, fluctuation

中图分类号: