How to improve the service life of corrugating rollers

Corrugated rollers are the heart of corrugated board production lines. If the corrugating roller is out of order, other conditions are no better, and the corrugated board production line will not function properly.

The surface of the corrugating roll is usually heat-treated, chrome-plated or nitrided. The average life of the corrugating roll can be calculated from the length of the production board. After heat treatment, about 18 million meters are chrome-plated and 28 million meters are chrome-plated. The corrugated roll after nitriding can be processed. 36 million meters of corrugated cardboard. The corrugating roller is fragile. If the operator is not careful, the service life will be shortened and it must be carefully handled.


In the production process, it is necessary to adjust the biting pressure of the corrugating roller, which is very important for accurately forming the corrugated base paper. If the biting pressure is too high, the strength of the corrugated base paper will be reduced, and the wear speed of the corrugating roller will be accelerated; if the biting pressure is too small The corrugated paper cannot completely form the corrugated,
As a result, there is a high and low phenomenon.

When a paper break occurs, press the brake immediately to disengage the pressure roller from the corrugating roller to avoid wearing the corrugating roller.

Make full use of the oil mist device. The oil mist is mainly used to prevent the abrasion of the corrugating roller in the grinding process of the corrugated paper forming process, effectively prolonging the life of the corrugating roller, and at the same time preventing the corrugating medium from jumping between the corrugating roller and the paper guide, so that the adhesive is accurate Coated on corrugated paper. In order to prevent the wear and damage of the corrugating roller, the guide plate should be made of a material with a low hardness.


The quality of corrugated base paper also determines the life of corrugating roll. When corrugated base paper with many impurities and rough paper is used, the corrugating roll wears fast. When corrugated paper with the width of paperboard production line is used, the surface of corrugating roll wears evenly and its service life can be extended. .

In order to extend the life of corrugating rollers, effective cleaning should be performed daily. Cleaning at the cardboard production line is dangerous and must be done under shutdown conditions. First, remove the auxiliary roller in the viscose component, separate the lower corrugating roller from the pressure roller, eliminate the spring pressure of the upper corrugating roller, remove the dirt on the surface of the corrugating roller with a steam sprayer, and evenly coat the low-viscosity engine oil on the corrugated fiber. Roll on. The upper corrugating roller is inserted into the groove due to the guide plate, and the corrugating roller keeps running.
There will be contaminants such as paper scraps, adhesives, etc. stuck in the grooves. Carefully clean the groove of the corrugating roller with the rounded claws on the head.

To check and adjust the parallelism of the corrugating roller regularly, keep the upper and lower corrugating rollers in the correct balance. Otherwise, the service life of the corrugating roller will be shortened, and the molding inaccuracy and breaking phenomenon will occur easily, affecting the quality of the corrugated board. If the corrugating roll is used for an unbalanced condition for a long period of time, the teeth of the corrugating roll will be deformed and will not be easily repaired.

Under normal circumstances, use the carbon paper method to check the parallelism of the corrugating roll. During inspection, the corrugated rollers must be cut off and the heating part of the corrugating roller should be properly relaxed. Three sheets of carbon paper are sandwiched between two sheets of white paper, which are then simultaneously placed between the upper and lower corrugating rollers that are slowly rotating. The positions are placed on the operating side, the transmission side, and the middle position, respectively, and the thickness of the two blank sheets is required. The actual thickness of corrugated base paper is the same during actual operation. Through the meshing rotation of the corrugating rollers, the scars are left on the white paper by carbon paper.