涟钢ROKOP高效连铸方坯凝固传热的数学模型  

Mathematical Model for Heat Transfer during Solidification of High-Efficiency Concasting Billet by ROKOP Concaster at Lianyuan Iron and Steel

作　　者：陈登福[1] 曾丁丁[1] 董凌燕[1] 许原[1] 梁新亮 罗敏 刘远岩 谢集祥 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [2]涟源钢铁集团公司,涟源417100

出　　处：《特殊钢》2004年第2期15-18,共4页Special Steel

摘　　要：建立了ROKOP高效连铸坯的凝固传热数学模型。提出二冷区总有效喷淋系数E与各段有效喷淋系数Ei、水量Qi和二冷段总水量Q的关系式E =Σ(EiQi) /Q ,二冷段有效比水量Bv与二冷段比水量B的关系为Bv =BE。应用该模型进行仿真计算 ,获得涟钢 6流ROKOP连铸机二冷区各段水量的控制方法。经生产实践证明 ,在生产 15 0mm× 15 0mm铸坯的拉速达到 3.8～ 4 .0m/min时自动控制的二次冷却制度满足工业连铸要求 ,得到优质铸坯。The mathematical model for heat transfer during solidification of ROKOP high-efficiency concasting billet has been established. It has been put forward that the relational expression between total effective spraying water coefficient E in secondary cooling zone and effective spraying water coefficient Ei, water flowrate Qi in each section as well as total water flowrate Q in secondary cooling zone is EΣ (EiQi)/Q, and the relational expression between effective specific water flowrate Bv and specific water flowrate B in secondary cooling zone is BvBE. The control pattern for water flowrate of each section in secondary cooling zone of 6 strand ROKOP caster at Lianyuan Iron and Steel is obtained by simulation and optimization calculation using the model. The production practice showed that automatic-controlled secondary cooling procedure met to requirement commercial concasting in producing 150 mm×150 mm cast billet with casting speed up to 3.8～4.0 m/min.

关 键 词：连铸机 高效连铸 二冷段 有效比水量 有效喷淋系数 数学模型 方坯连铸 凝固 传热 

分 类 号：TF777[冶金工程—钢铁冶金]