The effects of speed optimization, the control of looper level, and the control of tension on increasing stability of mills and production rhythm, and improving surface quality of strips are extremely important in continuous pickling process. Aiming at 1740mm continuous pickling line and tandem cold rolling mills, based on the principle of penalty function, the objective function model of speed was established to setup calculation for pickling speed. Meanwhile, synchronous control for looper level was achieved through the control of entry and exit speed of looper, to meet the requirement of looper level and tension. The setup calculation model of tension for continuous pickling process was built, and then the control accuracy of tension and the response performance of system had been improved, which realized the coordination of pickling speed and the control of rolling rhythm. The application results show that the setup model with high computational accuracy can make surface quality and flatness quality of pickling products for high strength steels significantly improved, in addition, the qualified product ratio of production of high strength steels is further increased and can satisfy the requirement of industrial production.
CHEN Jin-shan,ZHOU Guo-ping.
Development of control model for basic automation in pickling mills[J]. Journal of Iron and Steel Research, 2017, 29(5): 397-401 https://doi.org/10.13228/j.boyuan.issn1001-0963.20160228