Abstract：Slab temperature control model is the core of the furnace process control. The main task is to control, coordinate, and optimize the slab's heating quality according to the production process and the relevant mathematical model. In this paper, the slab temperature control model was optimized by selecting heat flow density and thermal property parameters and combining them with a two-dimensional difference model established by the finite difference method for the process control of medium-thick plate heating furnaces with multiple variables and inaccurate temperature forecasts. The optimized model was embedded into the online combustion secondary automation control system, and the main field application results were as follows.The temperature stability of each section of the heating furnace was within ±10 ℃; the slab opening process temperature qualification rate reached 98.28%; the gas energy-saving rate was increased by 5.56%; the oxidation burn rate was reduced by 15.05%. Through the field application effect, the optimized slab temperature control model obtained slabs with better heating quality based on energy saving and consumption reduction, which provided an essential reference basis for the actual production of the heating furnace in each steel mill.
朱强强, 王君, 李建平, 丁敬国, 黄苏. 中厚板加热炉板坯温度控制模型研究与优化[J]. 中国冶金, 2021, 31(9): 143-148.
ZHU Qiang-qiang, WANG Jun, LI Jian-ping, DING Jing-guo, HUANG Su. Research and optimization of slab temperature control model for plate heating furnace[J]. China Metallurgy, 2021, 31(9): 143-148.
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2021, Vol. 31 
