Wear and Failure Principle of Jaw Plate
Jaw plate is the main components of jaw crusher, jaw plate to make a direct impact on the life of the crusher efficiency, so the study of jaw plate loss and failure principle is a very necessary homework, in this regard, according to years of Qiming Casting.The experience of the summary for everyone to learn.
Wear analysis of the jaw plate can be found that jaw crusher tooth plate wear is chisel-type wear. Typically, the jaw plate material is Mn13, high manganese steel treated with water. Under the scanning electron microscope, it can be seen that the jaw plate surface is extruded into the concave and convex part of the material, followed by the abrasive push to form the tongue grinding surface, the grinding surface can see a lot of sharp angle short-range sliding Of the wear marks, and can see the jaw plate surface micro-cracks. The main reason for the wear of the jaw plate is that the abrasive slides relatively to the jaw plate, and the jaw plate material is deformed several times due to repeated grinding of the grinding debris and the abrasive, resulting in the fatigue of the metal material.
Wear failure process
① material repeatedly squeeze chisel teeth plate, in the jaw plate surface, or in the extruded metal protruding part of the root to form micro-cracks, the micro-cracks continue to expand to the connected, resulting in the surface of metal materials, The formation of abrasive debris;
② material repeatedly squeezed into the jaw plate metal material was fractured or turned up, the rupture or flip part of the material with the impact of crushing off together to form debris.
③ materials relative to the jaw plate short-range sliding, cutting chisel tooth plate to form debris.