Tunnel Furnace Optimization Control of Thin Slab Continuous Casting and Continuous Rolling
HE An-rui1, SONG Yong1, SUN Wen-quan1, LIN Feng-qin1, ZHANG Nan-feng2, LI Jian-hua2
1. Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083, China 2. No.1 Steelmaking and Rolling Plant, Hunan Valin Lianyuan Iron and Steel Co., Ltd.,Loudi 417009, Hunan, China
Abstract：The tunnel furnace could not be controlled automatically in the thin slab continuous casting and continuous rolling line, which leads to low temperature control accuracy and high energy consumption. In order to solve the problems, on the basis of full investigation on the existing equipments and control systems, the algorithm and parameters of the furnace temperature closed-loop control in basic automation system(L1) were optimized. Additionally, advanced process control system(L2) with multiple functions was developed and put into application. The actual production results show that the new L1 and L2 systems can increase the temperature control precision. The hit rate for the temperature deviation of the same slab within ±20 ℃ has reached 96%. The gas consumption was reduced by 7 kg/t and the product surface quality was also improved.
何安瑞 宋 勇 孙文权 蔺凤琴 张南风 李建华. 薄板坯连铸连轧隧道炉优化控制研究[J]. 中国钢铁期刊网, 2014, 33(6): 1-6.
HE An-rui, SONG Yong, SUN Wen-quan, LIN Feng-qin, ZHANG Nan-feng, LI Jian-hua. Tunnel Furnace Optimization Control of Thin Slab Continuous Casting and Continuous Rolling. Chinese Journal of Iron and Steel, 2014, 33(6): 1-6.