Brief Introduction to Operation Control Method of Rolling Mill for Packaging Steel Strip Production

Brief Introduction to Operation Control Method of Rolling Mill for Packaging Steel Strip Production
　　For the safe, efficient and high-speed operation of the mill, a batch of sequence controls are set up to automatically operate the rolling mill, including automatic acceleration, deceleration, automatic shutdown, and the pickling unit in the pickling-rolling mill combined unit. The control of the whole production line, and the coordinated control of the speed of the entire production line.
　　 If the main control function of cold tandem rolling-automatic position/pressure control, main speed cascade, automatic thickness control, automatic flatness control and other functions are collectively called operation control, then operation control includes the following two types of functions:
　　(1) Speed u200bu200bcontrol related to the automatic operation control of the rolling mill.
　　(2) Speed u200bu200bcontrol related to manual operation.
　　The speed control of the looper section, looper trolley control, looper exit section speed control, automatic deceleration of welding seam and automatic acceleration, automatic deceleration and automatic stop of Biantong cold tandem rolling control. The second category includes various operations such as raising speed, constant speed, lowering speed, threading, tail flicking, emergency stop, welding seam and calibration performed by the operator. The switching modes of various operating states are shown in Figure 2-4. Shown. Table 2-5 lists the speed control options under different operating states.
　　 The following describes the looper population and the speed control of the exit section with full continuous cold rolling as the object.
　　 In order to keep the tandem cold rolling mill rolling at a high speed and steady speed, full continuous cold rolling requires a looper with a certain capacity at the tandem mill population, and a welding machine and other equipment at the looper population. Continuously supply raw strip steel. In order to reduce the length of the looper area, the entire looper is divided into upper, middle and lower layers. Each layer is equipped with a looper trolley for pulling the strip steel (the looper trolley is hauled by a wire tie), when the looper area is 120m long It can store 720m of strip steel.