Transformation Of Leveler For Cold Rolled Recoiling Line In AnSteel

The paper describes the design of selection method,controlling system and the debugging method with controlling system for leveler which are used to cold-rolled strip steel. The price of imported leveler is 2-3 times than that of domestic leveler. Not only positional accuracy is low, but also failure rate is high for domestic leveler.In addition; the level of automation is not high. So domestic leveler can not be applied to the production line directly.Based on the case above, the paper designs a new selection method and controlling system. The tasks can be summarized as following list below:Provides the scheme for the replacement of imported leveler with domestic high-precision leveler in order to save cost;Provides the scheme for the replacement of controlling system of domestic leveler with controlling system of independent research and development;Finishes the tasks of selecting the type of leveler by way of analyzing applications of leveler;Finishes the tasks of selecting the manufacturer of leveler by way of analyzing economy,adjusting mechanism,positional accuracy and reliability of leveler;Finishes the tasks of selecting the type of S7300 frame, ET200 station,operating station by way of designing PLC hardware;Finishes the tasks of mode selection,fault alarming,communications,adjusting mechanism and roll change by way of designing PLC software;Finishes the tasks of main picture,diagnosis picture,roll change picture and calibration picture by way of designing HMI software;Finishes the tasks of system debugging by way of checking signal,debugging adjusting mechanism,debugging leveler and debugging the production line.Finishes the design of an economical, reliable, easy-operated precision leveler by way of studying.Realizes of tasks of transformation of leveler for cold rolled recoiling Line in AnSteel and gets good results. Provides a solid foundation for applying leveler on cold rolled recoiling Line.