Brief Introduction to Operation Control of Packaging Steel Strip Mill

Brief Introduction to Operation Control of Packaging Steel Strip Mill
　　 For the safe, efficient, and high-speed operation of the rolling mill, a batch of sequence controls are set up to automatically operate the rolling mill, which includes automatic acceleration, deceleration, automatic shutdown, and includes Control and 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.
　　 belongs to the first category with looper entrance section speed control, looper trolley control, looper exit section speed control, automatic deceleration of welding seam, and automatic acceleration, automatic deceleration and automatic stop control of traditional cold tandem rolling . 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 in different operating states.
　　 The following describes the speed control of the looper inlet and outlet sections with full continuous cold rolling as the object.
　　 In order to keep the tandem cold rolling mill rolling at a relatively high speed and steady speed, full continuous cold rolling requires a looper with a certain capacity at the entrance of the tandem mill, 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 looper trolleys for pulling the strip steel (the looper trolley is hauled by a wire rope). , Can store 720m of strip steel.