摘要
以相同的冷却强度、拉速、浇注温度、钢种等板坯连铸条件为模拟初始参数,采用相同的凝固潜热处理方式,针对两种常用的板坯连铸二冷边界条件处理方法FCA法和MCA法,分别采用四种不同的传热经验公式,计算了板坯连铸的热过程。得到这两种处理方式四种不同二冷传热经验公式的八组计算结果,并将计算结果与实测值相比较,结果证明,采用FCA法处理边界条件,得到的模拟计算结果与实测值相对误差均小于5%,而利用MCA法处理边界条件,得到的模拟计算结果与实际测量值相对误差在8%左右。因此,采用FCA法处理板坯连铸二冷边界条件得到的模型能更加准确地模拟板坯连铸的热过程。
Two kinds of common processing methods for boundary condition of secondary cooling with four kinds of empirical formulas are used in slab continuous casting. The same processing parameters such as the intensity of secondary cooling, casting speed, casting temperature, and steel grade are taken as the initial parameters of the slab continuous casting process. At the same time, the same disposal method is used for calevlating solidification latent heat. After the eight items simulation results are compared with the measured values, the results show that the relative error is less than 5% by using FCA to treat boundary condition, whereas the relative error reaches 8% when MCA is used to treat the boundary condition. In summary, FCA is a better method to accurately simulate the slab continuous casting process.
出处
《连铸》
2009年第4期4-9,共6页
Continuous Casting
关键词
板坯连铸
数值模拟
二冷边界条件
经验公式
slab continuous casting
numerical simulation
boundary condition of secondary cooling
empirical formula
