Study On Control System Of Loop In High-Speed Wire-Mill

Computer is applied broadly in the field of steel rolling industry, along with the development of computer technology and rolling theories. For the aim of creating and improving the mathematic models in the rolling process, advance the academic level, and also for the ultimate quality and the shape control of the rod, this paper via the course of simulation of the rolling process, fetch out the distribution of the various variable during the rolling process, and do the general analyses to the result.Through the research on the loop controlling system of high speed rod mill, Wuhan Iron & Steel Company and analyzing the state of the big fluctuation of the loop and difficulty in control., this paper simulated the control system, via the system, consummating the factor that influence the loop, optimized the primary control system and find out the best curve and control parameter. Finally, increase rate of eligible products for the sake of achieving the high economic benefits.The simulation system which was written in VB programming language has a good operating interface and high agility, it can gathered important technical parameters and then show them in figures. It also simulated the influence and relationship in the transfiguration resisting force, coefficient of he transfiguration resisting force, rolling area, rolling temperature, rolling pressure, loop length, the transition between loop length and loop high.The system simulated the dynamic changes in loop length when technical factors changed. The possible factors including the deviation of temperature in length and breadth of rod, the changes of transfiguration resisting force under the changes of temperature, the adjustment of roll gap, the variation of rolling pressure, the changes of roller speed during dynamic adjusting press, the unmatched of seconds -flux under the dimension fluctuation of the coming sample and so on. The whole system was a closed loop which factors in it interacts each other. The system provided academic gist for the analysis and research on the cause of the instability of the loop length...