基于表面温度测量的连铸二冷动态控制模型  

Dynamic secondary cooling model for continuous casting billets based on surface temperature measurements

作　　者：阳剑[1] 胡振伟[1] 孟红记[1] YANG Jian;HU Zhen-wei;MENG Hong-ji(College of Information Science and Engineering,Northeastern University,Shenyang 110819,Liaoning,China)

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110819

出　　处：《钢铁研究学报》2019年第2期112-116,共5页Journal of Iron and Steel Research

基　　金：国家重点研发计划课题资助项目(2017YFC0805100);国家自然科学基金资助项目(61703084)

摘　　要：二冷动态控制以连铸坯温度的稳定控制为目标,对提高连铸坯质量的稳定性具有重要意义。二冷动态控制的核心内容是实现铸坯表面温度的闭环控制,其关键是实现基于在线凝固传热模型的温度反馈,模型的准确性则是保证二冷动态控制应用效果的基础。为此,提出一种基于表面温度测量,结合射钉修正凝固传热模型的方法,用于辨识凝固传热模型的参数以保证模型的准确性,并应用于二冷动态控制。特别对随机氧化铁皮干扰下的铸坯表面温度的测量方法进行了深入的研究,并开发了能够长期稳定运行于连铸现场的测温装置。Dynamic secondary cooling aims at the stable temperature control of continuous casting billets, which is of great significance for improving the quality stability. The core content for dynamic secondary cooling control is to realize the close-loop control of surface temperature of continuous casting billets, as the key is to realize the temperature feedback based on the online solidification and heat transfer model;furthermore, the accuracy of the model is the basis for ensuring the application effect of the dynamic secondary cooling control. Therefore, a method was proposed for calibrating the solidification and heat transfer model, based on surface temperature measurement combined with nail-shooting, and used to identify the parameters of the solidification and heat transfer model to ensure the accuracy of the model. In particular, a deep study was carried out on the measurement method of the surface temperature of continuous casting billets under the interference of random scale, and a temperature measuring device was developed which can stably operate in site in the continuous casting process for a long time.

关 键 词：二冷 动态控制 连铸 凝固传热模型 表面温度测量 

分 类 号：TF777[冶金工程—钢铁冶金]