Abstract：The control level of the looper of the finishing mill group has directly influence on the rolling capability of thin products. Besides, it′s the premise to ensure the stability of the width and thickness quality control. Whether the raising-up of looper is stable has directly influence on the security of the crossing process in hot strip mill. The premise of stable raising-up of looper is to keep the initial metal flow rate difference between stands in a certain scope. However, affected by many factors, it′s difficult to control the stability of the raise-up of looper when rolling the thin gauge products. According to the production status of some hot mill plant, by analyzing the control process of raising-up of looper, four-point control requirements were put forward from the raising-up angle and tension control. The control technology of raising-up torque in the thin gauge products rolling process was optimized. At the same time, the tension setting calculation model was optimized by the introduction of the stability maintenance tension coefficient, and in this way, the overshoot of strip head tension was decreased. In practice, the optimized raising-up control of looper had achieved good results and the stability of crossing process of the thin gauge products were improved.
李芳. 薄带钢热连轧活套起套控制研究及优化[J]. 中国冶金, 2017, 27(7): 62-67.
LI Fang. Research and optimization of raising-up control of looper of thin strip hot rolling line. China Metallurgy, 2017, 27(7): 62-67.
2017, Vol. 27 
