宽厚板坯连铸结晶器铜板的热流密度分布与热分析

Heat flux distribution and heat analysis of wide-thinck slab continuous casting mold copper plate

基于热电偶对邯钢宽厚板坯连铸结晶器铜板的温度实测,构建其有限元传热模型与非线性估算热流密度模型。采取模型反算的结果获得铜板的热流密度,并且与热平衡方法计算出的平均热流密度做对比,论证模型的有效性,确定铜板宽、窄面的热流密度公式,同时对铜板进行温度分布分析。铜板热面、冷面的温度曲线均呈波浪状分布,热面的温度变化较为平缓,冷面有最大29.4℃的温差。铜板的温度随至弯月面的距离的增大而减小,但在结晶器出口区域出现23℃的回温。

Based on the temperature of hangang wide - thick slab continuous casting mold copper plate measured by thermocouple, the finite element heat transfer model and non -linear model were built to estimate the heat flux. Taking the results of back calculation model for getting heat flux of copper plate, and contrasting with the average heat flux calculated by heat balance, we demonstrated the validity of modelto confirme the heat flow formula of copper plate wide and narrow surface. The temperature distribution of copper plate was analyzed at the same time. The temperature curve of cop- per plate hot and cold sides are of a wavy distribution, the temperature of hot side changes tly, cold side has the largest temperature difference as 29.4 ℃. The temperature of coppe creases with the increase of the distance to the meniscus, but the temperature back to rise more gen- r plate de- at 23 ℃.