As an important core part of the cone crusher, the wear of the bowl liner is related to the service life and production capacity of the entire machine. Today, let's share the common causes of wear on the bowl liner:
Material factors
Material hardness: If the crushed material has a high hardness, such as quartz, corundum, etc., these hard materials will produce violent friction and collision with the surface of the crushing wall during the crushing process. Due to the high hardness, the material particles are easy to scratch the surface of the bowl liner when they pass over the bowl liner, resulting in increased wear. For example, in the crushing of quartz ore, the Mohs hardness of quartz is 7. When the bowl liner handles this kind of hard stone, each crushing action will cause the metal material on the surface of the bowl liner to be worn away by hard particles.
Material particle size and shape: After entering the crusher, larger-sized materials have a greater impact on the bowl liner. Especially when the material is irregular in shape and has sharp edges and corners, these edges and corners will be embedded in the surface of the bowl liner like a tool during the crushing process, and the relative movement of the bowl liner and the moving cone or fixed cone will aggravate the wear of the bowl liner. For example, some of the unscreened ores mined out have sharp edges and corners. In the cone crusher, when these ores roll and are squeezed in the crushing chamber, the edges and corners will continuously cut the bowl liner.
Material moisture and viscosity: Wet materials or sticky materials are easy to adhere to the bowl liner. When the material moisture is high, during the crushing process, the moisture will make the material form a mud-like state, and the solid particles in it will produce a grinding effect with the movement of the bowl liner. Sticky materials will stick to the bowl liner. In the subsequent crushing process, the newly entered materials will cause wear on the bowl liner together with the materials stuck on the wall. For example, in the crushing of some ores containing clay, the clay will adhere to the bowl liner. When the subsequent ores are crushed, the friction with the bowl liner will increase due to the presence of these clays.
Equipment operation factors
Speed and stroke: The speed and stroke of the crusher directly affect the wear of the bowl liner. If the speed is too high, the collision frequency between the bowl liner and the material will increase, and the amount of wear per unit time will also increase accordingly. When the stroke is too large, the relative movement between the bowl liner and the material becomes larger, the interaction force is enhanced, and the wear is also accelerated. For example, in a cone crusher, when the rotation speed of the moving cone exceeds the design range, the impact force and friction force of the material between the moving cone bowl liner and the fixed cone bowl liner will increase, resulting in increased wear of the bowl liner.
Discharge port size: The size of the discharge port affects the degree of material filling in the crushing chamber. If the discharge port is too small, the material in the crushing chamber cannot be discharged in time, which will cause excessive accumulation of materials in the crushing chamber and increase the workload of the crushing wall. At this time, the bowl liner works under a long-term high-load state, and the wear rate will accelerate. For example, in an impact crusher, when the discharge port is mistakenly adjusted to a smaller size, the incoming material cannot be discharged smoothly, and the bowl liner needs to bear more material pressure and friction, thereby accelerating wear.
Equipment quality and installation factors
Crushing wall material: The material quality of the bowl liner is a key factor affecting its service life. If the material's hardness, toughness and wear resistance are insufficient, the bowl liner will also wear out quickly when facing normal crushing work. For example, some low-quality high-manganese steel bowl liner cannot effectively resist wear when impacted and rubbed by materials due to their improper alloy composition ratio.
Installation accuracy: During the installation of the crushing equipment, if the bowl liner is not installed accurately, such as uneven clearance between the bowl liner and other components, insufficient concentricity, etc., it will cause uneven force on the bowl liner during the crushing process. This uneven force will cause serious local wear of the bowl liner and greatly shorten its service life. For example, in the cone crusher, when the bowl liner (moving cone and fixed cone) is installed, if the concentricity deviation is large, during operation, some parts of the bowl liner will be subjected to excessive pressure and friction, causing these parts to wear rapidly.
These are the common causes of wear on the bowl liner. As an experienced manufacturing expert in the industry, we can produce more wear-resistant cone crusher bowl liners for you and provide you with wear-resistant solutions. Interested friends can take the initiative to contact us and we will serve you in all aspects.
