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通过对钢坯在加热炉内的传热过程进行分析,建立钢坯的二维传热模型,并采用有限差分方法对钢坯温度场进行数值模拟。以钢坯出炉温度、出钢温差、加热过程中钢坯断面温差及表面温度等为约束条件,以能耗为目标函数,利用可变容差法求得加热炉各段的最优炉温设定值。运用该模型可方便地求得加热炉各段最优设定值,从而实现加热炉的最优工艺,提高加热炉效率,降低能源消耗,并提高产品质量。
Through the analysis of the heat transfer process of billet in the heating furnace, a two-dimensional heat transfer model of the billet is established and the finite difference method is used to simulate the temperature field of billet. Taking the billet tapping temperature, the tapping temperature difference, the billet temperature difference and the surface temperature in the heating process as the constraints, the energy consumption is taken as the objective function, and the optimal furnace temperature set point . By using this model, the optimal setting of heating furnace can be easily obtained, so as to realize the optimal heating furnace technology, improve the heating furnace efficiency, reduce energy consumption and improve product quality.