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Effects of Cooling Water Supply Nozzle Array on Cooling Performance of Run Out Table in Hot Rolling Process

机译：冷却供水喷嘴阵列对热轧工艺耗材冷却性能的影响

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Intricate physical phenomena such as boiling heat transfer, free surface flow, and the moving of a cooling object (running hot plate) are included in the ROT (Run Out Table) cooling process of hot rolling. Mixed reciprocal actions are also included. Therefore, analyzing the process with considering all relevant phenomena simultaneously has been an important objective in this field for a long time. In the ROT process, cooling performance could be affected by the upstream process, and by various environmental factors such as refining, reheating, and the ambient temperature and humidity. In this study, with such disturbances numerically fixed, cooling capacities are compared by varying the arrangement of the cooling water supply nozzle. Generally, the cooling heat flux is known to vary in the plate running direction. Thus, clustering the nozzle in the upstream or downstream direction could affect the average cooling capacity of the facilities. The cooling histories, the heat fluxes on the plate surface, and the thickness of the Leidenfrost steam layer are compared for various nozzle arrangements.
机译：复杂的物理现象，如沸腾的传热，自由表面流动，以及冷却物体（运行热板）的移动包括在热轧的腐烂（用完表）冷却过程中。还包括混合互易行动。因此，在考虑所有相关现象同时分析该过程一直是该领域的重要目标。在腐烂过程中，冷却性能可能受到上游过程的影响，以及各种环境因素，例如精炼，再加热和环境温度和湿度。在本研究中，通过这种干扰，通过改变冷却供水喷嘴的布置来比较冷却能力。通常，已知冷却热通量在板运行方向上变化。因此，在上游或下游方向上聚集喷嘴可能影响设施的平均冷却能力。冷却历史，板表面上的热通量，以及leidenfrost蒸汽层的厚度以各种喷嘴装置进行比较。

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