Grinding Mill Body Damage Problem

Grinding Mill Body Damage Problem

Summary of contents: The mechanical properties of materials affecting the wear of grinding mills are multifaceted. The wear resistance depends not only on the hardness of the steel, but also on the composition of the crucible. Although the steels of different compositions have the same hardness after heat treatment, However, the wear resistance is different, which means that there is no single value correspondence between the wear resistance of various steels and its macro hardness. For example, the relative wear resistance of industrial pure metals and different types of steel is proportional to its macro hardness.

Through the case analysis of the grinding mill used by customers in the past, it can be known that the main damages to the fuselage of the grinding mill are as follows:

1, the hardness of the material

The damage of the material to the fuselage is direct and obvious. Whether it is a grinding mill or other milling equipment, when grinding hard materials, the wear of the fuselage is more serious, and the service life of the wear parts is also significantly reduced. However, when the hardness of the material is small, the maintenance cycle of the grinding mill is significantly shorter.

2. Influence of mechanical properties of materials

The mechanical properties of materials affecting the wear of grinding mills are multifaceted. The wear resistance depends not only on the hardness of the steel, but also on the composition of the crucible. Although the steels of different compositions have the same hardness after heat treatment, they are resistant. The wearability is different, which means that there is no single value correspondence between the wear resistance of various steels and its macro hardness. For example, the relative wear resistance of industrial pure metals and different types of steel is proportional to its macro hardness.

3, the shape of the material

Abrasive shape (sharpness) also has a significant effect on wear. Usually, the shape of the material is simply divided into three types: sharp, polygonal and round blunt. Sharp abrasives wear the material under the same hardness. Vigorous, the polygon wears the material second, the wear mechanism is micro-cutting plus furrow, the round-shaped material has little wear on the grinding mill body, taking the newly broken quartz sand and river sand as an example, the new broken Quartz sand wears more material.

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