水口结构对连铸GCr15钢二冷区温度场的影响研究  

Effect of the Nozzle Structure on Temperature Field of GCr15 Casting Steel in Secondary Cold Zone

作　　者：张静[1] 赵登飞 吴会平[1] ZHANG Jing;ZHAO Dengfei;WU Huiping(School of Vehicles and Energy,Yanshan University,Qinhuangdao 066004,China)

机构地区：[1]燕山大学车辆与能源学院,河北秦皇岛066004

出　　处：《铸造技术》2018年第12期2813-2817,共5页Foundry Technology

基　　金：国家自然科学基金资助项目(51304173);河北省自然基金资助项目(E2017203044)

摘　　要：以连铸GCr15钢二冷区钢液凝固过程为研究对象,基于有限体积法建立铸坯流场和温度场三维模型,分析不同水口结构对连铸GCr15钢二冷区温度场分布规律的影响。结果表明,与直通水口对比,旋转水口能增强结晶器内旋涡流动,二冷区出口凝固率较大。增加侧出口数目,铸坯温度降低速率加快。但钢液结晶会释放大量潜热,坯壳增长速度没有温度下降速度快。The solidification process of molten steel in the secondary cold zone of continuous casting GCr15 steel was studied, and a three-dimensional model of billet flow field and temperature field was established based on the finite volume method. The effects of different nozzle structures on the temperature distribution in the secondary cooling zone of continuous casting GCr15 steel were analyzed. The results show that the rotating nozzle can enhance the vortex flow in the mold and the solidification rate is higher at the exit of the secondary cooling zone. When the number of nozzle side outlets is increased, the cooling rate of billet is accelerated. However, a lot of latent heat will be released when the molten steel crystallizes.

关 键 词：GCR15钢 浸入式水口 二冷区 温度场 凝固 

分 类 号：TF777[冶金工程—钢铁冶金]