矩形坯连铸结晶器铜管构型优化  

Optimization of Copper Tube Configuration in Rectangular Billet Continuous Casting Mold

作　　者：田臻 孙立根 庞晓凯 胡岩卓 钟存虎 古毅 

机构地区：[1]华北理工大学冶金与能源学院,河北 唐山

出　　处：《冶金工程》2024年第2期63-71,共9页Metallurgical Engineering

摘　　要：管式结晶器易于变形的问题限制了矩形坯连铸拉速的提高。为此本研究设计了不同形式水槽结构的矩形坯结晶器铜管,通过有限元方法计算了铜板的温度分布、应力分布与节点位移,分析了三个不同类型结构对结晶器寿命的影响。结果表明,大倒角弧形水槽矩形结晶器构型最佳,且结构优化后结晶器变形程度降低,铜板传热能力和冷却均匀性显著提高。其中在温度分布上,铜板热面最高温度下降7℃~8℃,平均温度下降3℃~4℃,角部温度变化最小。在应力应变分布上,应力变化最大截面的应力应变呈层状有序分布,且水槽和倒角周围应力变化率下降至10%~20%,水槽根部平均节点位移在5.85 × 10−5 m。The easy deformation of tubular mold limits the improvement of drawing speed of rectangular billet continuous casting. In this study, the copper tubes of rectangular billet mould with different flume structures were designed. The temperature distribution, stress distribution and joint displacement of the copper plates were calculated by finite element method, and the influence of three different structures on the life of the mould was analyzed. The results show that the rectangular mould with large chamfered curved water tank has the best configuration, and the deformation degree of the mould is reduced after optimization, and the heat transfer capacity and cooling uniformity of the copper plate are significantly improved. In terms of temperature distribution, the maximum temperature of the hot surface of the copper plate decreased by 7˚C~8˚C, the average temperature decreased by 3˚C~4˚C, and the corner temperature changed the least. In terms of the stress-strain distribution, the stress-strain distribution of the section with the largest stress change is stratified and orderly, and the stress change rate around the flume and chamfer decreases to 10%~20%, and the average node displacement of the flume root is 5.85 × 10−5 m.

关 键 词：高拉速 矩形坯连铸 管式结晶器 结构优化 

分 类 号：TF3[冶金工程—冶金机械及自动化]