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依照湍动能理论及异形坯连铸的特点 ,建立了异形坯结晶器三维流场数学模型。运用该模型分析了不同水口参数及工艺参数条件下的流场分布 ,从而得出影响结晶器内钢液流动的因素有水口倾角、水口浸入深度及拉坯速度。结果表明 :采用上倾 15°有利于夹杂物上浮 ;拉速 0 .9m/s可使流场分布均匀 ;适宜的水口深度可选 2 0 0mm。利用该模型可对连铸过程进行离线分析 ,确定最佳参数 ,并可作为在线控制模型的基础
According to the theory of turbulent kinetic energy and the characteristics of continuous casting of blank, the three-dimensional flow field mathematical model of blank mold was established. The model was used to analyze the distribution of flow field under different nozzle parameters and process parameters, and the factors affecting the flow of molten steel in the mold were the nozzle angle, the depth of immersion and the casting speed. The results show that: Adoption of upward inclination of 15 ° is conducive to inclusions floating; pull speed 0.9m / s flow field can be evenly distributed; suitable nozzle depth optional 200mm. Using this model, offline analysis of the continuous casting process can be performed to determine the optimum parameters and can be used as a basis for online control models