1. The material of the knife
        The single-piece cutting machine tool is welded by blade and knife body at high temperature, chrome tungsten manganese steel blade has high hardness, low carbon steel knife body. The hardness of the tool steel of the durable blade is proportional to the quality of the blade, and the hardness of the blade is as high as 60 quenching HR55.
        2. The quality of the cutter sharpener
        The higher the quality of the paper cutter, the longer the service life of the cutter.
        3. The shape and angle of sharpening
       Single-sided paper cutters generally use a single sharpening knife with a sharpening angle of 19 ° to 23 °. Sharpening such a shape causes the pressure on the inclined surface tool to be cut during the cutting process, the paper base in one section rubs, and the inclined surface of the blade is quickly worn.
The cutting edge of the double-sided tool has obvious advantages, which helps reduce the load on the machine and improve the accuracy and sharpening of the crop. Therefore, in the case of cutting tool materials, the angle of sharpening should be as small as possible under the premise of considering the size of crop shear resistance.
        4. Different crop materials

        The speed at which the edge of the reamer becomes dull and the wear-resistant material is cut during the cutting process. When cutting paper, the speed at which the blade becomes blunt and the paper texture is soft, hard and how much ash content. The feel of the cutting operation is harder. The greater the ash content in the paper, the faster the blade becomes dull.