中文摘要：

基于热电偶实测温度,建立了包晶钢宽厚板坯连铸结晶器有限元传热模型和热流密度非线性估算模型.应用模型反算获得包晶钢宽厚板坯结晶器的热流密度,在与热平衡计算得到的平均热流密度进行比较后,阐述了模型的有效性,并分析了实际生产条件下结晶器铜板的温度分布规律.结晶器宽面和窄面的平均热流密度分别为1.141和1.119 MW·m~（-2）.温度在靠近结晶器背面呈波浪形分布,最大温差为29.6℃,然而在远离背面位置,温度变化平缓.随距弯月面距离的增加,温度呈降低趋势,然而在距结晶器出口附近出现回温现象.同时宽厚板坯连铸结晶器的热流密度和温度分布均有别于传统板坯连铸.

英文摘要：

Based on measured temperature by thermocouples, a finite element model of heat transfer and a nonlinear estimation model of heat flux were built for a continuous casting wide-thick slab mold for peritectic steel. The heat flux of the mold was inversely computed by using the model. In comparison with the average heat flux calculated by heat balance, the model was proved to be valid. The temperature distribution of cooper plates in the mold was analyzed under actual production conditions by the model. The averaged heat flux is 1.141 and 1.119 MW.m-2 for the wide and the narrow face, respectively. The temperature near the mold back appears to be waved with a maximum difference about 29.6 ℃, whereas presents to be fiat far away from the mold back. Although the temperature decreases with the increase of the distance below the meniscus, it picks up near the mold exit. The heat flux and temperature distributions of the mold differ from those of conventional slab molds.