The jaw crusher wear analysis and problem solving

The jaw crusher is a kind of widely used crushing equipment in mine, metallurgy and construction industries, in the actual production process, jaw plate of jaw crusher is the main bearing parts, and equipment wear the most serious part.

The common type of jaw crusher plate material machine are used of high manganese steel, high manganese materials when broken constantly caused due to work hardening, after a period of time can be seen on the tooth surface of the tooth plate surface because the material is continuously extruded and uneven, scratches by cutting into the material.

Thus, the tooth surface wear of the jaw plate is mainly due to the continuous extrusion of materials and the relative sliding between the jaw plates.

In order to improve the weight of the product and prolong the service life of the jaw plate and save the cost, the Red Star machine thinks it is necessary to analyze the cause of the wear of the jaw plate.

Force analysis of material movement

When the moving jaw moves upward, the material is relatively sliding with the fixed jaw; when the moving jaw moves downward, the material and the movable jaw plate slide relatively first. In general, the wear of moving jaw plates is mainly due to the extrusion of materials and jaw plates, while the relative sliding between the jaw plate and the jaw plate is the main cause of the wear.

Displacement analysis of moving jaw plate at one point

The jaw crusher discharging end of the movable jaw movement characteristics of vertical swing than the horizontal direction of travel. The greater the vertical swing, the longer the material slip time here, resulting in the wear of the gear plate intensifies, especially in the vicinity of the discharge port. The cutting wear is greater than the extrusion wear, and the lower part of the jaw plate wear faster than the upper part. In the actual production, in order to improve the service life of the jaw plate material, the jaw plate is often installed after a period of time, so that the upper and lower parts can be balanced utilization.

Wear failure analysis of jaw plate surface

The main factor controlling the wear of the jaw plate is the hardness and humanity of the material. The hardness of the material determines the depth and size of the material crater, the hardness of the material is high, the material is pressed into the depth of the jaw plate is shallow, the deformation of the surface material of the jaw plate is small, and the material of the material is less than that of the material. The toughness of the material indicates its ability to resist fracture, the toughness of the material is good, the brittle fracture in the material extrusion process can be eliminated, and the change process of the jaw plate material before the formation of deformation and fatigue is greatly increased.

In a word, from the user point of view, there are many factors affecting the wear of jaw plate crushing machine, Hongxing machine that, in addition to the above points, the actual production process there are many factors that can lead to crushing jaw plate wear, concrete analysis, the maximum saving investment cost.

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