Slitting cutter, also known as slitting machine blades. It is mainly used in uncoiling and leveling of metal sheet and automatic generating line of longitudinal shearing. The raw material of cutter is high-speed cutting tool steel. Different materials are selected according to different sheets such as shear cold-hot rolling, silicon steel sheet, pickling plate and automobile girder steel. The main materials are SKD-11, D2, SLD, W6Mo5Cr4V2, H13, H13K and H13Ni. Then it is manufactured by cutting, forging, tempering, roughing, heat treatment, tempering, finishing, inspection and packaging. The cutter plays a key role in the whole longitudinal shear line, which directly affects the effect of finished sheet metal. Therefore, the accuracy and quality of the slitting cutter are very high. The blade must be carefully grinded by a high-precision grinder, and then the finished product is finally grinded by the grinder to ensure that the accuracy of the blade is controlled within 0.001 mm and the parallelism is controlled within 0.003 mm. It is suitable for the following industries: steel plate processing and distribution center, steel pipe factory, strip mill, packaging material factory, non-ferrous metal processing factory, vertical shear line manufacturer and so on.