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以热镀锌机组合金化炉为研究对象,建立合金化炉内空气流动与热交换的物理模型和数学模型,对炉体侧封不同高度以及增设阻流板前后情况进行对比,研究阻流板对带钢表面温度的影响。利用CFD软件,采用标准k-ε湍流模型,对合金化炉内流场和温度场的分布进行数值模拟研究,得到炉内流场和温度场分布特征。结果表明:在相同的加热功率条件下,炉体无侧封高度,增设阻流板将有助于提高炉内气流温度;然而,在炉体侧封高度分别为0.09、1.29 m的情况下,阻流板抑制炉内热气流的烟囱效应,阻碍热气流对带钢的加热作用,导致带钢表面温度降低。
Taking the galvannealing furnace alloy as the research object, the physical model and mathematical model of the air flow and heat exchange in the alloying furnace were established. The different height of the furnace side seal and the situation before and after the addition of the spoiler were compared. Effect on strip surface temperature. Using CFD software, the standard k-ε turbulence model was used to simulate the distribution of the flow field and the temperature field in the alloying furnace, and the distribution characteristics of the flow field and the temperature field in the furnace were obtained. The results show that with the same heating power, the furnace has no side-seal height and the baffle plate will help to increase the temperature of the gas flow in the furnace. However, with the side-seal height of 0.09 and 1.29 m respectively, The choke plate suppresses the chimney effect of the hot gas flow in the furnace, hindering the heating effect of the hot gas flow on the steel strip, resulting in a decrease of the surface temperature of the steel strip.