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采用有限元方法,对某钢厂的大方坯连铸机的凝固传热情况以及坯壳凝固生长进行了数值模拟,并通过现场数据对模型进行了验证。以此为依据,对该钢厂新建的重轨钢大方坯在不同的拉速和过热度条件下的凝固过程温度场分布情况、坯壳生长规律和凝固分率进行了预测性的模拟研究,从而为新建的重轨钢大方坯连铸机的结晶器和二冷区冷却制度的制定提供理论依据。
The finite element method was used to simulate the solidification and heat transfer of the billet caster in a steel mill and the solidified growth of the billet. The model was verified by field data. Based on this, the temperature field distribution, the growth law of solidified shell and the solidification fraction of the newly built heavy rail steel bloom in the steelmaking plant under different conditions of casting speed and superheat were predicted by simulation. This will provide a theoretical basis for the establishment of the cooling system for the newly built heavy rail continuous casting machine and the cooling system of the second cooling zone.