Factors Affecting the Wear of the Jaw Plate

The jaw plate is the part that directly contacts the material when the jaw crusher works. In the process of crushing materials, the crushing teeth on the jaw plate are continuously squeezed, grinded and impacted by the materials, causing the jaw plate to become the most wearable part in the jaw crushing process. Once the loss reaches a certain level, the power consumption will increase and the material crushing efficiency will be low, which means the shutdown or even the entire production line is shut down for maintenance. Frequent replacement of the jaws will directly affect the production efficiency and economic benefits of the enterprise. Therefore, understanding the factors that affect the wear of the jaw plate of a jaw crusher and extending its service life are issues that many jaw crushers are very concerned about.

1. Material hardness. The hardness of the material has an important influence on the wear of the jaw plate. Under the same other conditions, materials with high hardness are easier to press into the surface of the jaw base body than materials with low hardness, resulting in wear.

2. Jaw plate material. The wear resistance of the jaw plate material directly determines the service life of the jaw plate. Although high manganese steel (ZGMn13) is partly replaced by other steel grades under low and medium stress impact abrasive wear conditions, due to its low production process conditions and a wide range of raw materials, it is still occupied the important position in wear-resistant materials.

3. In addition, the meshing angle and tooth shape also have a certain influence on the wear of the jaw plate. 

How to extend the service life of the jaw plate?

1. Reasonable selection of materials. The material selection of the jaw crusher is the basis for the service life of the jaw.

When selecting the material of the jaw plate, ZGMn13 can be used as the main material for the material selection. This manganese steel has strong toughness. Although its hardness is reduced, it has the characteristics of cold work hardening. The squeezing force causes it to be continuously squeezed and hardened during the working process, so that it is hardened while being worn out until it is worn beyond the use limit before being scrapped. In addition, other factors such as cost must be considered comprehensively when selecting materials.

2. Pay more attention when assembling. The assembly of the jaw plate has a great influence on its service life. When assembling the jaws, it is necessary to firmly fix the jaws on the movable and fixed jaws, and keep the movable and fixed jaws at the same parallelism to avoid the relative between the jaws and the movable and fixed jaws when the jaw is broken. Sliding causes the jaws to wear or break.

3. Appropriate improvement during use. During the working process of jaw crushing, the material is in direct contact with the jaw plate, and the jaw plate bears huge crushing pressure, especially for some materials with higher hardness. The strong force will cause the installation bolts of the jaw plate to be vibrated and loosen, thereby aggravating the wear of the jaw plate, or even falling off or breaking. Springs can be added to the fixing bolts to improve the anti-loosening and vibration reduction ability of the jaw plate fixing bolts, extend the service life of the jaw plate, and improve the production efficiency and economic benefits of the jaw crusher.

In addition, when the jaw plate needs to be replaced, it must be purchased from a regular manufacturer to ensure the quality of the jaw plate. In the production of jaw crushers, attention should be paid to the operation of the equipment, and troubles should be eliminated in time to ensure the good operation of the equipment.