双水口注流连铸复合钢坯结晶器流场和合金元素浓度场研究

doi:10.3724/SP.J.1037.2010.00025

金属学报

2010, Vol. 46

Issue (6): 736-742 DOI: 10.3724/SP.J.1037.2010.00025

论文

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双水口注流连铸复合钢坯结晶器流场和合金元素浓度场研究

李宝宽; 代凤羽; 齐凤升; 杨冉

东北大学材料与冶金学院; 沈阳 110819

FLOW FIELD AND CONCENTRATION FIELD OF ALLOYING ADDITION IN CLAD STEEL CONTINUOUS CASTING MOLD USING LONG AND SHORT NOZZLES

LI Baokuan; DAI Fengyu; QI Fengsheng; YANG Ran

School of Materials and Metallurgy; Northeastern University; Shenyang 110819

引用本文:

李宝宽代凤羽齐凤升杨冉. 双水口注流连铸复合钢坯结晶器流场和合金元素浓度场研究[J]. 金属学报, 2010, 46(6): 736-742.
, , , . FLOW FIELD AND CONCENTRATION FIELD OF ALLOYING ADDITION IN CLAD STEEL CONTINUOUS CASTING MOLD USING LONG AND SHORT NOZZLES[J]. Acta Metall Sin, 2010, 46(6): 736-742.

全文: PDF(3050 KB)

摘要:

本文研究了利用长、短双水口结合电磁制动技术在同一结晶器内连铸复合钢坯的新工艺.为掌握结晶器内钢液流场和合金元素浓度场分布规律, 结合实验和数学模拟分析了该工艺过程. 实验中采用浸泡黑芝麻显示流场状态. 数学模型中采用低Reynolds数湍流模型计算湍流参数, 并比较了隔板与静磁场制动对结晶器内流场的影响.实验与数值模拟结果互相检验, 两者吻合良好, 据此得到了长、短双水口浇铸复合钢坯工艺结晶器流场和合金元素浓度的分布特征. 同时还研究了水口出流结构和静磁场强度参数对流场和浓度场的影响.

关键词 ：双水口注流连铸复合钢坯, 电磁制动, 隔板, 流场和合金元素浓度

Abstract：

In order to mass-produce the clad steel of stainless/carbon steel at low cost, the new clad steel slab continuous casting process, which uses the combination of long and short submerged entry nozzles and electromagnetic brake in the same mold, was developed. The flow field and concentration field of alloying elements in a clad steel continuous casting mold were studied by combination of experiment and mathematical model. The black sesames dipped in water were used to visualize the flow patterns in the mold. The low Reynolds number turbulent model was used to calculate turbulent viscosity, and the fictitious solidified shell was used to simplify the solidification calculation. The effect of clapboard and electromagnetic brake on the flow field was compared. By comparing experiment with systematical numerical analysis, the reliability and reasonableness of the model proposed were verified. Flow structure and concentration characteristics of alloying element in the mold were obtained, and parameteric studies on the nozzle structure and magnetic flux density were also conducted.

Key words： long and short clad steel slab continuous casting electromagnetic brake clapboard flow field and concentration field of alloying element

收稿日期: 2010-01-12

基金资助:

国家自然科学基金资助项目50774111

作者简介: 李宝宽, 男, 1963年生, 教授

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https://www.ams.org.cn/CN/10.3724/SP.J.1037.2010.00025 或 https://www.ams.org.cn/CN/Y2010/V46/I6/736

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