Application of Reduction Modifying in Hot Strip Continuous-Rolling Process Controlling

Strip thickness is an important factor of strip quality. The experienced physical model is not suit for solving the problem of strip thickness fluctuation which resulted from data abnormality in product process. A new method of modifying reduction is presented to solve the problem. This method controls strip thickness by combining scene real-time metrical data with experienced physical model, modifying reduction and keeping balance of stands. With the method, the eligible ratio of finished product is advanced and the influence of data abnormality is eliminated. The new method is of great significance to guarantee the fault tolerance of control system and stability of production and product quality.