1、 Knife making material

&The cutting tool of the single piece paper cutting machine is made by high-temperature welding of the blade and blade body. The blade is made of high hardness chromium tungsten manganese steel, and the blade body is made of low-carbon steel. The durability of the cutting tool is directly proportional to the hardness of the steel used for the blade. High quality blades can have a hardness of HR55~60 after quenching treatment.

2、 Shape and angle of sharpening knife

On a single sided paper cutting machine, a single sharpening blade is generally used, with a sharpening angle between 19 ° and 23 °. However, this shape of the grinding blade is not an ideal shape. The oblique surface of the cutting tool bears the pressure from the paper stack that is cut during the cutting process, so under the friction of the paper edge, the oblique surface of the blade is quickly worn. The double-sided cutting tool has obvious advantages, as its sharpening helps reduce the machine's load and improve cutting accuracy.

The smaller the angle of sharpening the tool, the sharper the blade, and the lower the shear resistance of the cut object to the tool. The wear and power consumption of the machine are also reduced, and the cut product is neat and the cut is smooth. However, if the grinding angle is too small, the strength and wear resistance of the blade will correspondingly decrease, and the cutting speed and quality will actually decrease. Therefore, with the permission of the cutting tool material and taking into account the shear resistance of the cutting object, the angle of sharpening should be as small as possible.

3、 Quality of sharpening knives

The quality of sharpening depends on the production materials and equipment, the sharpening process specifications, and the technical level of the operators. The higher the quality of the sharpening tool, the longer the service life of the cutting tool, and the better the cutting quality.

4、 Type of cutting material

The speed at which the blade becomes blunt during the cutting process is related to the wear resistance of the material being cut. When cutting paper, the speed at which the blade becomes dull is related to the softness and hardness of the paper and the amount of ash content. When cutting paper with harder texture and higher ash content, the speed at which the blade becomes blunt is faster.