薄板坯连铸结晶器铜板温度及热流密度分布

薄板坯连铸结晶器的传热过程直接影响到铜板的寿命，有必要研究薄板坯连铸结晶器的传热特征。为了研究薄板坯结晶器的热流密度，通过开发的结晶器温度监测软件检测了珠钢结晶器铜板的温度。根据在线实测的铜板温度以及薄板坯连铸机冷却参数，建立了薄板坯结晶器铜板传热模型，计算并验证了结晶器热流密度的分布函数，同时通过二次回归得出了结晶器热流密度与结晶器高度的关系式。结果表明，在宽度方向上铜板温度和热流密度的分布具有相似的规律性，距离弯月面越近，热流密度和温度的波动越大。弯月面处热流密度值大于4．2MW／m^2，是造成结晶器铜板被侵蚀的主要原因。

Distribution of Temperature and Heat Flux Density of Thin Slab Continuous Casting Mould Copper Plate

The duration of copper plate of thin slab continuous casting mould is affected directly by heat transfer process. Therefore, it is necessary to study the heat transfer thin slab continuous casting mould. In this study, the mould copper plate temperature was measured with a developed mould temperature monitoring software at Zhujiang Steel. Based on measured copper plate temperature and cooling parameters of thin slab continuous caster, a heat transfer model of mould is developed. The distribution function of mould heat flux is calculated and proved. Besides, the mould heat flux as a function of height is obtained by quadratic regression, The result showed that the distribution of copper plate temperature is similar to that of heat flux in the width direction, the fluctuation of mould temperature and heat flux is more obvious near to meniscus, the main reason of copper plate erosion is that the heat flux is more than 4.2 MW/m^2 at meniscus.