Cause analysis of tooth plate wear of crusher

Date: 2019-07-31 Views:

As we all know, any mining machinery equipment, has the certain service life and jaw crusher is not exceptional also, after a long run, jaw crusher teeth plate, bearing, jaw and other parts will wear failure occurred, so that the need to replace new parts, this paper mainly focuses on analyzing the reason of jaw crusher teeth plate wear.
 

1. Causes of tooth plate wear of crusher


The upper wear of gear plate of crusher is mainly friction wear, and the crushing of ore in jaw crusher is mainly done by working plate.Crusher teeth plate is in the process of the jaw crusher broken material part, direct contact with the material in the motion state of crusher, tooth plate and material between the extrusion and the phenomenon of grinding, tooth plate, the horizontal movement of tooth plate extrusion force, tooth plate subjected to vertical whereabouts of material at the same time also for grinding material.The tooth plate is easily damaged in the working process, so we should pay attention to the use of the tooth plate when using jaw crusher, timely replacement of the crusher tooth plate.

The upper wear is mainly friction wear, even if the upper wear added, the jaw crusher work will not bring adverse impact, after calculation, crusher tooth plate service life can reach more than a year, in specific applications, can make two crusher tooth plate, one work, one reserve.It can reduce unnecessary downtime and improve the efficiency of jaw crusher.

In general, the service life of a pair of tooth plate is about three months, which means to use a jaw crusher year 4 pair tooth plate, it's virtually adds cost in production source, can use for a long time use of wear-resisting of gear, can improve the stress of tooth plate from the source to reduce costs, so as to achieve the purpose of profit.

2. Wear failure process


(1) the material repeatedly extrudes and cuts the tooth plate, and micro-cracks are formed on the surface of the tooth plate area, or on the root of the protruding part of the extruded metal, and the micro-cracks continue to extend to the connection, causing the surface metal material to fall off and form grinding debris.

(2) repeated extrusion of materials results in partial fracturing or lifting of toothed plate metal materials, whose fragmentation or lifting part falls off and forms abrasive debris along with the material impacted by extrusion.

(3) the material slides relative to the tooth plate, and the cutting tooth plate forms grinding debris.

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