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通过采用ANSYS FLOTRAN流体软件模拟钢轨喷风冷却热处理过程中流场的速度分布,以及钢轨热处理实验,分析了喷嘴与钢轨之间的距离对钢轨热处理后硬度的影响。喷嘴与钢轨之间的距离在15～20 mm范围时,钢轨热处理后硬度分布最好,热处理效果最佳,为钢轨在线热处理生产线的建设提供了理论基础。该流场模型模拟结果与试验结果完全一致,为钢轨喷风冷却热处理工艺的优化提供了一定的指导作用。
By using ANSYS FLOTRAN fluid software to simulate the velocity distribution of the flow field during rail jet cooling heat treatment and the heat treatment experiment, the influence of the distance between the nozzle and the rail on the hardness of the rail after heat treatment was analyzed. When the distance between the nozzle and the rail is in the range of 15-20 mm, the hardness distribution of the rail after heat treatment is the best, and the heat treatment effect is the best, which provides a theoretical basis for the construction of the rail on-line heat treatment production line. The simulation results of the flow field model are in good agreement with the experimental results, which provide some guidance for the optimization of rail jet cooling heat treatment process.