Generally, this is caused by serious wear or too much clearance, the shearing edge gap should be calibrated or the blade should be replaced; it may also be that the shearing edge locks the hydraulic nut or the lock nut loosens to cause the blade clearance to change, and the blade should be removed to reinstall or replace the hydraulic nut.
After shearing, there are more obvious burrs on the edges of the strip, which is because the shear blade is worn and should be replaced with a new blade.
Longitudinal strip scratches appear on the strip surface (upper or lower surface), which are caused by friction between the guide plate or chute and the strip, and the height of the guide plate or chute should be adjusted appropriately.
This phenomenon is generally caused by the unreasonable blade gap of the disc or the shearing edge is not sharp enough, and the shearing gap should be checked to adjust or replace new shearing.
