Control System Research And Application Of Color Coating Line

Color coating plate not only has advantage of good coloring, forming, anti-corrosion and decoration of organic polymer, but also has character of high strength and manufacture-easily, that can be stamping and cutting, bending and deep drawing simply. So the product made of organic coating steel plate possesses better practicability, decorative, processing and durability.This thesis's aim is research and application of control system in color coating line.Firstly, design of electrical control system and its mating equipment type are mostly identical, and the functions in the software are also common. The difference mainly is hardware type. So in the beginning, I give a summary in the color coating line of The Cold Rolling Mill of Benxi Iron & Steel Co.that consist of processing equipment and configuration of electrical control system. The following is to study part of sequence control and its functions and then provide with design plan.Secondly, tension control technology directly influences surface quality of final product. Depending on various subject in the thesis, control strategy of tension roll, pay-off reel, tension reel and loop have been respectively discussed and studied. Catenary control of plate in the oven is the one of the core of tension control, so I approximately analyze dynamic catenary control by establishing static mathematic mode.Color coating line takes the way of roll coating to realize chemical surface processing and painting film. In this thesis, the main is control method of chemical coating roll and primary(finish) coating roll, give an overall analysis of film thickness control in the coating roll,how to improve control accuracy, and change the original experience control.