Establishment of the Temperature Field Model of 72LX Blooms in the Reheating Furnace

It is difficult to measure temperature changes inside steel blooms during steel production, so reliable numerical simulations are important for process optimization. In this work, thermocouples were located within a production reheating furnace and embedded inside a 72LX steel bloom. The temperature distributions within the bloom and the furnace as the bloom passed through the furnace were measured. These data were used to establish a two-dimensional model, and the heat transfer coefficients during the production process were obtained by inverse calculation. During bloom heating, we found a large difference between the upper and lower furnace temperatures in the third heating stage. The simulated values of the temperature field were in good agreement with the measured values, which indicates that the temperature field model for the production process was effectively established.