Q345D大方坯连铸过程数值模拟

甄成国，麻永林，许建飞，陈重毅

（内蒙古科技大学 材料与冶金学院，内蒙古 包头 014010）

关键词：大方坯；拉速；过热度；二冷水量

中图分类号：TG777.2    文献标识码：A

摘要：以Q345D大方坯为研究对象，采用二维传热模型对铸坯进行温度场计算。计算了不同拉速、过热度和二冷水量下铸坯温度分布和坯壳生长情况，分析了拉速、过热度和水量对铸坯的温度分布和坯壳生长的影响。得到了不同工艺下，铸坯温度分布规律和凝固坯壳生长规律，为实际生产提供一定的指导。

Numericalsimulation of continuous casting process of Q345D bloom

ZHEN Cheng-guo, MA Yong-lin, XU Jian-fei, CHENZhong-yi.

（Materials and Metallurgy School,Inner Mongolia University of Science and Technology, Baotou 014010, China）

Key words: bloom; casting speed;degree of superheat; amount of second cooling water

Abstract:Choosing the Q345D bloom asthe research object, a two-dimensional heat flow model was applied to calculatetemperature distribution and shell growth of the bloom at different castingspeed, different degree of superheat and different amount of second cooling water. The influenceof these factors on the temperature distribution and shell growth was obtained.The temperature distribution law and shell growth at different process werefound, which would provide some guidance for the actual production.