方坯浸入式水口对结晶器流场和温度场影响的数值分析  

Numerical Analysis of Influence of Billet Submerged Entry Nozzle on Mold Flow Field and Temperature Field

作　　者：帅勇[1,2] 孙乐飞[2] 操瑞宏[2] 肖年根[2] SHUAI Yong1, SUN Lefei2, CAO Ruihong2, XIAO Niangen2(1. Iron and Steel Research Institute, Beijing 100081, China; 2. Xinyu Iron and Steel Group Co., Ltd., Xinyu 338001, China)

机构地区：[1]钢铁研究总院,北京100081 [2]新余钢铁集团有限公司,江西新余338001

出　　处：《铸造技术》2018年第10期2303-2307,共5页Foundry Technology

摘　　要：基于160 mm×160 mm方坯生产的设备参数和工艺条件,采用湍流低雷诺数k-ε方程,建立描述结晶器内钢液流动过程的三维数学模型,研究浸入式水口插入深度和内径变化对结晶器流场和温度场影响。结果表明,同一插入深度,水口内径增大,钢液在水口中流速减小;同一水口内径,随着插入深度的增加,钢液流形成的冲击区向下移动。当浸入式水口的内径为28 mm,插入结晶器深度为80 mm时,更有利于方坯连铸过程流场、温度场均匀,以及结晶器内液面的稳定。Based on the equipment parameters and technological conditions of 160 mm ×160 mm square billet, a three-dimensional mathematical model describing the flow process of molten steel in a mold was established by using the low Reynolds number k-ε equation, and the influence of the depth and diameter of the immersed nozzle on the flow field and temperature field of the mold were studied. The results show that the increase of inner diameter and the decrease of the velocity of molten steel in the nozzle. With the increase of insertion depth, the impact area of the steel flow will move downward. When the inner diameter of the submerged nozzle is 28 mm and the depth of the mold is 80 ram, the flow field and the temperature field of the billets continuous casting process and the liquid level in the mold are more favorable.

关 键 词：数值分析 结晶器 流场 温度场 

分 类 号：TF777.3[冶金工程—钢铁冶金]