钢卷冷却过程中温度的变化对组织的形成、二次相的析出以及晶粒尺寸起着至关重要的作用，因此，获得钢卷冷却过程的温度场变化规律有重要的现实意义。计算符合实际冷却工艺的比热容及建立钢卷内表面换热系数和钢卷层与层之间热阻的模型，采用Deform-2D软件对微合金高强钢卷自然空冷过程进行数值模拟。比较模拟温降曲线与试验数据，验证了该模型的正确性，并研究分析了钢板厚度和卷取温度对钢卷冷却温度场的影响。结果表明，钢板厚度越大，钢卷温度分布越不均匀，卷取温度越高，钢卷发生相变的时间越长，但钢卷各部位冷速不会因此而改变。
Variation of temperature plays an important role in microstructure,precipitatation of secondary phase and grain size during coils cooling. Hence,it is significant to obtain the temperature field of cooling coil. By calculating spe-cific heat capacity conformed to real cooling technology, and building heat transfer coefficient of inner surface of steel coil and thermal resistance between two adjacent layers of steel coil,the current study simulated the progress that high strength microalloyed coils were cooled in nature by software DEFORM-2D. The comparison between the calculated temperature reduction and the measured value indicated that the model was correct. This paper analysed the effect of coil thickness and coiling temperature on the distribution of temperature. The results show that the larger thickness of sheet is,the more uneven distribution of coil temperature is. A higher coiling temperature can prolong the time of thermal reac-tion,but the cooling rate of each part doesn't change.
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