Computer system for the design of technology of the manufacturing of pearlitic and bainitic rails was presented in this paper. The system consists of the FEM simulation module of thermal–mechanical phenomena and microstructure evolution during hot rolling integrated with the module of phase transformation occurring during cooling. Model parameters were identified based on dilatometric tests. Physical simulations, including Gleeble tests, were used for validation and verification of the models. In the case of pearlitic steels, the process of subsequent immersions of the rail head in the polymer solution was numerically simulated. The objective function in the optimization procedure was composed of minimum interlamellar spacing and maximum hardness. Cooling in the air at a cooling bed was simulated for the bainitic steel rails and mechanical properties were predicted. The obtained results allowed us to formulate technological guidelines for the process of accelerated cooling of rails.

中文翻译：

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珠光体和贝氏体钢轨制造过程链的数值模拟

提出了珠光体和贝氏体钢轨制造技术设计的计算机系统。该系统由热力学现象和热轧过程中的微观组织演化的有限元模拟模块，以及冷却过程中发生的相变模块组成。基于膨胀试验确定模型参数。物理模拟（包括Gleeble测试）用于模型的验证和验证。在珠光体钢的情况下，数值模拟了轨头随后浸入聚合物溶液中的过程。优化过程中的目标函数由最小层间距和最大硬度组成。模拟了贝氏体钢轨在冷却床上的空气冷却，并预测了机械性能。获得的结果使我们能够为钢轨的加速冷却过程制定技术准则。