Research On Loop Control System Of 2050mm Hot Rolling Mill

With the rapid development of modern industrial technology,the requirements for the variety,specifications,quality and output of strip steel are increasing.In the hot rolling production process,the technical equipment and control level of the finishing train are the key factors determining the quality of the product,while the loop control and tension control level between the finishing stands directly affects the strip width,thickness,straightness,Key performance indicators such as board type.The looper is the most affected factor in the whole control system of the hot strip mill.The equipment with complicated control is also the most critical equipment of the whole rolling line.Its function is to buffer the change of metal flow and prevent the rolling caused.Scrap,while also adjusting the rolling speed of the upstream and downstream racks,keeping the strip tension constant.In this paper,the "finishing mill loop control system" is used as the research object.The working principle and control function of the looper are discussed in detail.The control ideas and models of the looper are analyzed,and the fault is detected in the looper control system.Stability analysis,and optimize and improve the factors affecting the fluctuation of the looper from the electrical,mechanical and technological points.The process angle is optimized and improved in terms of height,tension and sleeve control.Through the analysis of the height of the looper and the tension control,the set values of the looper tension and the sleeve amount are adjusted to achieve a constant second flow rate,preventing stacking and drawing,and effectively controlling and reducing The generation of strip side waves increases the yield and quality of strip products.This paper also starts from the application background of the hot rolling automation control system,proposes the control system requirements,and determines the controller that uses the SIMATIC TDC control system as the looper control.At the same time,the detailed design of the hardware configuration,software configuration and network configuration of the loop control system is explained,and a perfect and stable loop control system is built.The scheme proposed in this paper can greatly enhance the stability of the whole system,reduce the accident rate of the looper control system,and ensure the stable operation of the production line,thus ensuring the quality of the rolled strip.On the other hand,the program of this paper is optimized from different angles,with technical promotion and profit value.