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The Cellular Automata Model of Electroslag Remelting Ingot Structure

机译：电渣重熔铸锭结构的元胞自动机模型

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Electroslag remelting (ESR) is an advanced process for the production of high quality steels. The microstructure of remelted steel which affect the mechanical properties and the performance of the ingot was determined by the technological parameters. A two-dimensional axisymmetric geometry which was established in this paper was divided into macro-grid finite element in order to compute temperature field; then the grid was divided into more detailed and uniform cells, and at last the continuous nucleation model based on the Gaussian distribution and K.GT growth model was established for nucleation and growth calculations using cellular automaton method (CA) on the solidification of molten steel. The results show that: a vertical columnar grain zone and a inverted V-shaped columnar crystal zone appeared in the ESR ingot. In addition, the temperature field with different electrode melting rate and slag pool temperature parameters and the microstructure with different average nucleation under cooling and maximum grain density were studied in this paper. The simulation results agree well with the experimental results, so it is proved that the model and calculation method is reliable. To produce ideal solidified ingot and achieve the purpose of optimizing the production process, the production process was adjusted according to the simulation results.
机译：电渣重熔（ESR）是生产优质钢的先进工艺。通过技术参数确定影响钢锭力学性能和性能的重熔钢的显微组织。本文建立的二维轴对称几何被划分为宏网格有限元，以计算温度场。然后将网格划分为更详细，更均匀的单元格，最后基于高斯分布和K.GT建立连续成核模型，并利用元胞自动机方法（CA）对钢水的凝固过程进行成核和生长计算。 。结果表明：在ESR铸锭中出现了垂直的柱状晶粒区和倒V形的柱状晶体区。此外，研究了不同的电极熔化速率和熔渣池温度参数的温度场，以及在冷却和最大晶粒密度下具有不同平均成核度的组织。仿真结果与实验结果吻合良好，证明了该模型和计算方法的可靠性。为了生产理想的凝固锭并达到优化生产工艺的目的，根据仿真结果对生产工艺进行了调整。

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