The blade of the shredding machine gradually becomes dull in the cumulative work of the day, but it also needs to consider the emergency situation to lead to the edge damage. The first appearance of the grinder is usually normal wear, and second may be damaged by the edge known as abnormal wear. Both normal wear and abnormal wear have a great impact on the production process.
The first stage is also known as the initial stage of wear. As the above surface roughness of the new equipment is not smooth, there are some small folds, oxidation or carbon layers and a series of defects. The device has a sharp edge, and the contact surface is not very large and the pressure is greater. So the operation of the equipment during the period of tool wear is also called. This phase is not recommended for replacement tools, because it creates maximum value when the device has the highest performance cycle. The second stage: This is the normal wear and tear during the running in. After the last stage, the rough surface is basically worn, and the knife has begun to wear, but because of its unprecedented sharp edge, the wear degree is very slow. So the wear stage of the film tearing machine is very stable and slow under normal operating conditions. The third stage: This is the most important stage, and it is necessary to pay close attention to the wear state of the blade. If the width of the abrasive belt extends to a certain limit, the surface roughness, cutting force and cutting temperature will increase rapidly, and the wear rate will increase quickly, which will cause the tool failure and lose the cutting ability. A stage of wear and tear should be avoided in the rational use of the production tools to ensure the quality of the processing. It is necessary to change the knife or replace the blade in time before the arrival of this stage.
