The invention discloses a hot rolling reeling scroll defect control method, and relates to the field of hot rolling. The thickness of
strip steel is set, the roll gap of a pinch roll is set, the stripsteel enters a reeling
machine, the
strip steel enters the roll gap between a reeling assisting roll and a core bar in the reeling
machine till the core bar is expanded, and tension is established between the core bar and a finish rolling rack F6. The values of position sensors of pressing hydraulic cylinders on the two sides are adopted for reference, the two-side pressing actual deviation is calculated, a computer automatically gives the OS
servo valve signals according to the actual deviation value, the hydraulic cylinders are elevated or the computer automatically gives DS
servo valve signals, and the hydraulic cylinders are elevated. Through control over gaps of the pinch roll, actually, the actual deviation on the two sides is accurately obtained under the
pressure control situation; through the deviation feedback value, the deviation is automatically or manually adjusted for ensuring the relative horizontal closed-
loop control process of the pinch roll, the reeling
machine is more automatic and stable in the running process, the artificial participation steps are reduced, and the labor cost is reduced.