高速线材穿水冷却过程的传热分析及数值模拟  

Heat Transfer Analysis and Numerical Simulation on Water-Through Cooling Process of High Speed Wire

作　　者：赵志恒 张云祥[1] 骆艳萍[2] 陈密达 叶传龙[1] 郭继祥[3] ZHAO Zhiheng;ZHANG Yunxiang;LUO Yanping;CHEN Mida;YE Chuanlong;GUO Jixiang(Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan Hubei 430081,China;WISDRI Engineering&Research Incorporation Limited,Wuhan Hubei 430223,China;Kunming Iron and Steel Co.,Ltd.,Wugang Group,Anning Yunnan 650302,China)

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081 [2]中冶南方工程技术有限公司,湖北武汉430223 [3]武钢集团昆明钢铁股份有限公司,云南安宁650302

出　　处：《上海金属》2023年第1期86-94,共9页Shanghai Metals

基　　金：国家自然科学基金(51774219)。

摘　　要：差分计算模型和水冷换热模型是影响高速线材温度计算准确性的两个主要因素。提出了一种新的离散化网格划分方式,并据此推导出具有表面温度节点的一维有限差分模型。采用Fluent软件模拟得出水冷管内冷却水的流速场,结合开冷温度对水冷温降的影响规律,构建了高速线材穿水冷却过程的非线性换热模型,并用现场实测数据验证了模型的精度,误差为±10%。结合差分模型和水冷换热模型研究了预冷段水冷参数对线材表面温降和心表温差的影响。结果表明:该模型可应用于线材水冷参数优化和在线水冷温控等。Difference calculation model and water cooling heat transfer model are the main factors affecting the accuracy of temperature calculation of high speed wire.A new discrete grid division method was proposed,to derive a one-dimensional finite difference method(FDM)with surface temperature nodes.The velocity field of cooling water in water cooling pipe was simulated by Fluent software,and combined with the influence law of start cooling temperature on water-through cooling temperature drop,a nonlinear heat transfer model for high speed wire during water cooling was constructed,furthermore,the accuracy of the model was verified by field measured data,and the error was±10%.The effects of different water cooling parameters in the pre-cooling section on the surface temperature drop and core-surface temperature difference of wire were analyzed by the FDM and water cooling heat transfer model.The results indicated that the model could be applied to optimization of water cooling parameters and on-line temperature control of wire during water cooling.

关 键 词：穿水冷却 有限差分法 高速线材 换热模型 

分 类 号：TG335.6[金属学及工艺—金属压力加工]