The wear of the jaw plate of the jaw crusher is a common problem in its operation, which is mainly caused by the following reasons：
1. Sliding friction between the material and the jaw plate: During the crushing process, the short-range sliding friction between the material and the jaw plate will cut the jaw plate, forming debris, resulting in wear of the jaw plate.
2. The material repeatedly squeezes the jaw plate: The material repeatedly squeezes the jaw plate many times, and small cracks may form on the surface of the jaw plate or at the root of the protruding part of the jaw plate.These cracks continue to expand, eventually causing the surface material of the jaw plate to fall off and form debris.
3.Local fracturing or overturning caused by material extrusion: The repeated extrusion of the material may cause the surface material of the jaw plate to be partially cracked or overturned, and the material that is squeezed and hit will fall off together, forming debris.
4. The hardness and toughness of the jaw plate material: The key to controlling the wear of the jaw plate and prolonging the service life lies in the hardness and toughness of the jaw plate material.Materials with high hardness have stronger wear resistance and extrusion resistance, while materials with good toughness can reduce the brittle fracture of the jaw plate during extrusion and impact with the material, and reduce surface deformation and cracking.
5. Jaw plate structure design: The structural design and geometry of the jaw plate will also affect its degree of wear.Reasonable design can reduce the relative sliding of the material and the jaw plate, thereby reducing friction.
6. Changes in the nature of the material are not adjusted in time: If the nature of the material changes, but the parameters of the crusher are not adjusted in time, it may also cause wear of the jaw plate.
7. The angle between the jaw plate is too large: If the angle between the movable jaw plate and the fixed jaw plate is too large, beyond the normal range, it will also cause the jaw plate to wear out.
8. Insufficient strength of the jaw plate itself: Insufficient strength, wear resistance and resistance of the jaw plate itself can also cause serious wear and tear.
In order to extend the service life of the jaw plate, in addition to choosing materials with high hardness and good toughness, the structure of the jaw plate should also be considered to reduce the sliding friction between the material and the jaw plate and reduce the amount of cutting wear.At the same time, regular inspection and replacement of worn jaw plates are also necessary maintenance measures.
