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首页> 外文会议>Iron and Steel Technology Conference >Investigation of Water Droplet Impingement Under Conditions of the Secondary Cooling Zone of a Continuous Slab Caster
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Investigation of Water Droplet Impingement Under Conditions of the Secondary Cooling Zone of a Continuous Slab Caster

机译：连续板坯二级冷却区条件下水滴冲击研究

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In the secondary cooling zone (SCZ) of the continuous casting process, 40 - 90% of the heat is removed from the slab. A major part of the cooling is achieved by spray cooling, using water or air-mist nozzles. On the one hand, the cooling performance has to be sufficient to ensure shell growth and the complete solidification of the material. On the other hand, uniform and smooth cooling characteristics are important to avoid crack propagation or crack formation. In order to meet these conditions, a fundamental understanding of spray properties is crucial. The impingement of water droplets on the steel surface is influenced by the size and velocity of the droplets. In addition to water impact, the temperature on the surface is important, since above the Leidenfrost temperature, a stable vapor film between surface and spray water is formed.
机译：在连续铸造过程的二次冷却区（SCZ）中，从板坯中除去40-90％的热量。通过喷洒冷却，使用水或空气雾喷嘴来实现冷却的主要部分。一方面，冷却性能必须足以确保壳生长和材料的完全凝固。另一方面，均匀和平滑的冷却特性对于避免裂纹繁殖或裂缝形成是重要的。为了满足这些条件，对喷雾性能的根本理解至关重要。钢表面上的水滴的冲击受液滴的尺寸和速度的影响。除了水影响外，表面上的温度很重要，因为高于莱顿弗罗斯特温度，形成表面和喷水之间的稳定蒸汽膜。

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