Jaw crusher is a kind of crushing equipment widely used in mining, metallurgy, construction and other industries. The jaw plate is the part that directly contacts with the material when the jaw crusher is working. In the process of crushing materials, the crushing teeth on the jaw plate are constantly squeezed, ground and impacted by the materials. The huge impact load and severe wear make the jaw plate become the most vulnerable part in the jaw crushing process. Once the loss reaches a certain level, there will be phenomena such as increased power consumption. Jaw plate failure replacement means downtime, or even the entire production line downtime for maintenance. Frequent replacement of jaw plates 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 the jaw crusher and prolonging its service life are issues of great concern to many jaw crusher users.
The following are the causes and solutions of jaw crusher jaw plate wear summarized by Shanvim:
1. Reasons for the wear of the jaw plate:
1. The contact between the jaw plate and the surface of the machine is not smooth;
2. The speed of the eccentric shaft is too fast, and the crushed materials are too late to be discharged, resulting in blockage of the crushing cavity and wear of the jaw plate;
3. The nature of the material has changed, but the crusher has not been adjusted in time;
4. The angle between the movable jaw plate and the fixed jaw plate is too large, exceeding the normal range;
5. The self-strength, wear resistance and impact resistance of the jaw plate are not good.
Second, the solution is:
1. Shanvim casting requires that when installing the jaw plate, it must be installed and fixed tightly so that it can be in smooth contact with the surface of the machine;
2. A layer of material with better plasticity can be placed between the jaw plate and the surface of the machine;
3. Every batch of materials entering the crusher must be randomly inspected. Once the properties of the materials are found to have a relatively large change, the parameters of the crusher must be changed in time to match the incoming materials;
4. The jaw plate must be made of materials with high hardness, wear resistance and strong impact resistance;
5. Cement enterprises with ore crushing production line technology can exchange the same type of worn jaw plates for mine coarse crushing and cement fine crushing. The worn jaw plates can be repaired by surfacing welding.
When choosing a jaw plate, the following factors should be fully considered for selection:
(1) The larger the size of the jaw crusher, the larger the size of the crushed material, and the greater the impact load on the jaw plate. At this time, when selecting the material, the first consideration should be to increase the hardness of the jaw plate on the premise of ensuring the toughness of the jaw plate.
(2) For crushing different materials (such as granite, quartzite and limestone), the material of the jaw plate should be different; the higher the hardness of the material, the higher the hardness of the corresponding jaw plate.
(3) The force bearing mode of the moving plate and the fixed plate are different from the wear mechanism, and the moving plate bears a large impact force. Therefore, the toughness should be considered first; while the fixed plate is supported by the frame, so the hardness can be given priority.
(4) When choosing the material of the jaw plate, the technical and economic effects should also be considered, and strive to achieve high quality and low price, and have market competitiveness. At the same time, the rationality of its process should also be considered, so that the production plant can easily organize production and control quality.
Shanvim as a global supplier of crusher wearing parts, we manufacture cone crusher wearing parts for different brands of crushers. We have more than 20 years of history in the field of CRUSHER WEAR PARTS. Since 2010, we have exported to America, Europe, Africa and other countries in the world.
Post time: Nov-25-2022