ABSTRACT

In the process of high casting speed, the study of funnel mould (FM) cooling process is particularly important. Based on the copper plate temperature measured by thermocouple, a mathematical model of the inverse heat transfer problem of the thin slab/copper plate was developed to calculate the boundary heat flux, then a positive mathematical model of thin slab/copper plate/cooling water coupled heat transfer has been developed, and the influence of the cooling water flows from top to bottom in the water channels on the heat transfer behaviour of the FM copper plate was analysed. The results show that when the cooling water flows from top to bottom in the water channels was adopted, the peak temperature of the copper plate hot face decreased 117°C, the maximum temperature of the cooling water decreased 24°C. Cooling water velocity and temperature have little influence on heat transfer of copper plate.

摘要

在高拉速过程中，漏斗模（FM）冷却过程的研究尤为重要。以热电偶测得的铜板温度为基础，建立了薄板/铜板逆传热问题的数学模型，计算边界热通量，进而建立了薄板/铜板/冷却水耦合的正数学模型开发了传热技术，分析了冷却水在水道中自上而下流动对调频铜板传热行为的影响。结果表明，采用冷却水在水道中自上而下流动时，铜板热面峰值温度降低了117℃，冷却水最高温度降低了24℃。