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中间包内钢液流动行为是影响后续铸坯凝固质量的重要因素,因此,设计合理的中间包控流装置显得十分必要。以某钢厂新设计的七流“T”形中间包为研究对象,根据“T”形中间包结构特点和七流中间包的几何尺寸设计了四种不同的控流装置,并通过数值模拟的方法对各控流条件下中间包内的速度场、温度场和夹杂物去除效果进行系统分析,发现采用控流方案C时,各流间流动均衡性较好;中间包内最大温差和各流出口极限温差分别为9℃和0.4℃,温度非常均匀;同时,夹杂物去除率达89.12%,是适用于现场的一种理想控流方案。
The flow behavior of molten steel in the tundish is an important factor that affects the solidification quality of the subsequent slab. Therefore, it is necessary to design a reasonable tundish flow control device. Taking the newly designed “T” shape tundish of a new steel mill as the research object, four different flow control devices were designed according to the structural characteristics of the “T” tundish and the geometric dimensions of the seven tundish. Through numerical simulation, the velocity field, temperature field and removal efficiency of inclusion in each tundish under different flow conditions were systematically analyzed. It was found that flow control scheme C had a good balance of flow between tundishs. The maximum temperature difference and the temperature difference between the outlet and the outlet are 9 ℃ and 0.4 ℃, respectively. The temperature is very uniform. Meanwhile, the removal rate of inclusions is 89.12%, which is an ideal flow control scheme for the site.