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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.
In this paper, the new technology of continuous casting billet in the same mold by using long and short double nozzle combined with electromagnetic brake technology was studied.In order to understand the distribution law of molten steel flow field and alloying element concentration in the mold, combined with experiment and mathematical simulation The process was simulated by immersing the black sesame seeds in the flow field.The turbulent parameters were calculated by the low Reynolds number turbulence model in the mathematical model and the influence of the partition plate and the static magnetic field brake on the flow field in the mold was compared.Experimental results The results of numerical simulation are in good agreement with each other, and the distribution characteristics of flow field and alloy element concentration in the mold of long and short double-nozzle cast billets are obtained. At the same time, the outlet structure of the nozzle and the parameters of static magnetic field strength Effects of flow field and concentration field.