| 连铸结晶器内卷渣过程的数学模型 |
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| 引用本文： | 雷洪,朱苗勇,赫冀成.连铸结晶器内卷渣过程的数学模型[J].金属学报,2000,36(10):1113-1117. |
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| 作者姓名： | 雷洪 朱苗勇 赫冀成 |
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| 作者单位： | 东北大学材料与冶金学院,沈阳,110006 |
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| 基金项目： | 国家自然科学基金重点项目59734080和国家重点基础研究发展规划项目G1998061510资助 |
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| 摘 要： | 基于功能原理和速度边界层理论，建立了一个数学模型来研究结晶器内渣金卷混机理，提出了引起界面卷渣的钢液临界流速和渣滴直径计算公式，并利用物理模型进行了验证。结果表明：钢液临界流速决于渣钢密度、粘度和它们之间的界面张力，在实际生产中，钢液临界流速为０．５－０．８ｍ／ｓ，产生的渣滴直径约为３ｍｍ。
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| 关 键 词： | 连铸 结晶器 卷渣 数学模型 临界速度 边界层 |
| 文章编号： | 0412-1961(2000)10-1113-05 |
| 修稿时间： | 2000年1月12日 |
MATHEMATICAL MODELING OF SLAG ENTRAPMENT IN CONTINUOUS CASTING MOULD |
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| LEI Hong,ZHU Miaoyong,HE Jicheng.MATHEMATICAL MODELING OF SLAG ENTRAPMENT IN CONTINUOUS CASTING MOULD[J].Acta Metallurgica Sinica,2000,36(10):1113-1117. |
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| Authors: | LEI Hong ZHU Miaoyong HE Jicheng |
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| Abstract: | Based on the transfer relationship between energy, work and the theory about the velocity boundary layer, a mathematical model was established to study the mechanism of slag entrapment in the continuous casting mould. Two theoretical equations related to the critical molten steel velocity causing the slag entrapment at interface and the diameter of the slag drop were derived, and their reasonableness was validated by water model. The results show that the critical molten steel velocity is determined by physical properties of the slag and metal, such as density, viscosity and interfacial tension between slag and steel. In actual system, the critical molten steel velocity is about 0.5Al.8 m/s, and the diameter of slag drop is around 3 mm. |
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| Keywords: | continuous casting mould slag entrapment mathematical model critical velocity boundary layer |
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