Numerical simulation of flow field and temperature field of 1 850 mm×230 mm slab in continuous casting mold
XIE Ji-xiang1,2, LUO Gang2, LIU Liu1, WANG Cheng-yi1
1. Metallurgical Department, Central Iron and Steel Research Institute, Beijing 100081, China; 2. Hunan Hualing Lianyuan Iron and Steel Co., Ltd., Loudi 417009, Hunan, China
Abstract：In order to study the effect of continuous casting process parameters on the mold, the flow field and temperature field of 1 850 mm×230 mm slab in continuous casting mold in Liansteel were systematically-simulated. The comprehensive effects of different argon blowing rate (0-7 L/min), nozzle immersion depth (110-150 mm) and casting speed (0.9-1.2 m/min) on the metallurgical behavior of molten steel in the mold were studied. It was concluded that as the argon blowing rate increased, the velocity and temperature of the free liquid surface of the mold showed a general trend of descending. As the nozzle immersion depth increased, the velocity of the free liquid surface of the mold decreased before increasing. As the casting speed increased, the velocity of the free liquid surface of the mold also increased. The nozzle immersion depth and casting speed had little effect on the temperature field. When the argon blowing rate was 5 L/min, the nozzle immersion depth was 130 mm and the casting speed was 0.9 m/min, the free liquid surface of the mold had smaller velocity and turbulent kinetic energy. At the same time, the liquid surface had better temperature uniformity. The numerical simulation study provided a theoretical basis for the reasonable selection of the relevant technical parameters of the mold.
谢集祥, 罗钢, 刘浏, 汪成义. 1 850 mm×230 mm板坯连铸结晶器流场与温度场数值模拟[J]. 中国冶金, 2020, 30(2): 54-62.
XIE Ji-xiang, LUO Gang, LIU Liu, WANG Cheng-yi. Numerical simulation of flow field and temperature field of 1 850 mm×230 mm slab in continuous casting mold[J]. China Metallurgy, 2020, 30(2): 54-62.
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2020, Vol. 30 
