A new model, CONOFFLINE, has been developed to simulate transient thermal behavior of a longitudinal section down a continuous steel slab-casting machine. The model was first verified by comparing its predictions of shrinkage through the strand thickness with transient measurements of roll forces in a thick-slab caster during a series of speed changes. The model was then applied to investigate the evolution of temperature and shell thickness in a typical caster after sudden changes in casting speed. Simple equations are proposed to estimate the settling time of metallurgical length and surface temperature during sudden speed changes for both thin- and thick-slab casters. Finally, the influence of different spray cooling control methods on these behaviors during casting speed changes is investigated.

中文翻译：

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用 CONOFFLINE 研究钢连铸的动态热行为

已开发出一种新模型 CONOFFLINE 来模拟连续钢坯连铸机纵向截面的瞬态热行为。该模型首先通过将其通过铸坯厚度的收缩预测与厚板坯连铸机在一系列速度变化期间的轧制力的瞬态测量值进行比较来验证。然后应用该模型来研究典型连铸机在铸造速度突然变化后温度和壳厚度的变化。提出了简单的方程来估计薄板坯和厚板坯连铸机在速度突然变化期间冶金长度和表面温度的稳定时间。最后，研究了不同的喷雾冷却控制方法在拉速变化期间对这些行为的影响。