空心环形件电渣熔铸内结晶器的对流换热系数  

Heat Transfer Coefficient for ESR Inner Mold of Hollow Cylindrical Casting

作　　者：王安国[1,2] 姜周华[1] 娄延春[2] 熊云龙[2] 

机构地区：[1]东北大学冶金学院,辽宁沈阳110819 [2]沈阳铸造研究所,辽宁沈阳110022

出　　处：《东北大学学报（自然科学版）》2017年第8期1093-1097,1106,共6页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51674070;51434004;51475313)

摘　　要："空心环形件电渣熔铸"内结晶器对流换热系数αin是衡量其内结晶器冷却效果的核心参数.本文将实测的内结晶器铜板水冷面温度、流体温度值代入基本算式求取并利用有限元分析验证来确定αin的取值范围,通过比照水平环形套管对流换热系数的经验公式来确定计算αin的经验公式.该经验公式用温差函数、效应因子、速度函数解析了内结晶器水模型温差、短管效应、内外径及高度等形状因素对αin的综合影响,提供了αin数据库建立的理论依据.ESR hollow cylindrical casting inner mold heat transfer coefficient αin is the core parameter to measure the effect of inner mold cooling.The range of αin was determined by inputting the measured values, including cooling surface temperature of the inner mold copper plate and water temperature, into basic formula and finite element analysis.The empirical formula for calculating αin was determined by comparing with the empirical formula of heat transfer coefficient for annular casting.The experiential formula of αin explicates the effects of temperature difference, the short pipe effect and the shape factor of inner mold water model on αin by using temperature difference function, effector and velocity function, which provides a theoretical basis for αin database establishment.

关 键 词：空心环形件电渣熔铸 内结晶器 对流换热系数 水速 温度 

分 类 号：TF748.6[冶金工程—钢铁冶金]