What are the reasons that affect the use effect of slitter blades? In the production process of pneumatic Slitter, corrugated board slitter and metal Slitter, how to use them correctly to improve the service efficiency and service life of the blade?
Knife making material is the key factor for the durability of slitter blade; SKD-11 alloy steel with high chromium content should be selected for ordinary cutting blades of paper, plastic and film; The blade of high-speed slitting machine needs to have high wear resistance, so high-speed steel is the best tool making material;
In general, the durability of the blade is directly proportional to the hardness of the heat treatment; Therefore, the hardness of high-quality slitting machine blade after quenching treatment can reach hr55 ~ 60, while the blade made of high-speed steel also needs vacuum heat treatment to achieve ideal hardness and toughness.
The grinding accuracy and edge angle of the blade are also one of the factors affecting the service life. The slitter blade is generally designed with a single edge, and its grinding angle is about 30 °. Generally, the inclined surface of the blade edge bears large friction in the cutting process. Under the friction of the paper edge, the inclined surface of the blade is quickly worn. Considering the shear resistance of the cutting object, the grinding angle can be as small as possible.
When selecting the blade, the texture of the cutting material should be taken into account; In the cutting process, the speed at which the knife edge becomes blunt is related to the wear resistance of the cut material. When cutting materials with harder texture and greater toughness, the texture and hardness of the selected slitter blade should be better.
Slitter blade is a special blade used in printing and packaging industry. Cutting accuracy, sharpness and service life affect the production efficiency of products to a great extent; Reasonable selection of slitter blades can better increase the production efficiency of finished products and the time of changing and shrinking short knives.
