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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.
Based on the measured temperature of the thermocouple, a finite element heat transfer model and a heat flux density non-linear estimation model of the continuous casting mold for the peritectic steel were set up. The heat flux density of the ingot- After comparing the average heat flux calculated by thermal equilibrium, the model is validated, and the temperature distribution of the mold copper plate under actual production conditions is analyzed.The average heat flux density of the mold wide face and narrow face are 1.141 and 1.119 MW respectively · M ~ (-2) .When the temperature was close to the back of the crystallizer, the maximum temperature difference was 29.6 ℃, while the temperature was gentle away from the back.The temperature decreased with the increase of the distance from the meniscus Back to the temperature near the exit of the mold, while the heat flux density and temperature distribution of the wide slab continuous casting mold are different from the traditional slab continuous casting.