General knowledge about the anilox roll and wall thickness of carton printing in carton machinery: the roll body of the anilox roll is usually made of seamless steel pipe, usually carbon steel pipe, but carbon steel pipe also has low carbon, medium carbon and high carbon. (There is a price difference)
1. We mostly choose medium carbon steel pipes. Why? The strength and flexibility of medium carbon steel pipe are relatively ideal. The strength of low carbon steel pipe is poor, and the flexibility of high carbon steel pipe is not good. Because the double roll ink transfer depends on the friction extrusion of the two rolls, the steel pipe is required to have good strength and flexibility, and the performance of medium carbon steel is more suitable.
2. As for the wall thickness, the molding wall thickness of the anilox roll should be 28MM-35MM for a machine with a width of 2.5m and 3m. Too thin, the roll body is easy to deform under the condition of extrusion and friction, and you can imagine what will happen after deformation, so I won't say much here. Then you would say that it is better to use solid ones. Why do you have to use hollow ones? The same sentence is easy to deform. You will ask why again. This explanation is too complicated. Installation of mandrels at both ends Many anilox rolls will break after being used for a period of time. Why? This is the problem with the installation of the spindle. The connection between the easily broken mandrel and the roll body is to weld the cross iron on the mandrel first, then weld the cross iron in the anilox roll body, and then remove the internal stress of heat treatment. However, this method is not desirable. The two rolls are extremely easy to break after reaching the fatigue strength under long-term extrusion. It took me too much to know this. My current practice is to weld the mandrel with the double flange, then heat the anilox roll body, and then install the flange into the heated and expanded roll body. After the roll body cools down, tightly wrap the flange, and then spot weld it for a few times, and then conduct annealing and stress relief treatment.