Excluding maintenance of bearing damage

Through bearing failure and degradation, performance status parameters to judge and predict the performance, reliability, and use bearing on the part of the abnormal situation, cause and degree of risk identification and judgment, decided to repair and improve the method of comprehensive technology. Therefore, bearing fault diagnosis technology is not a simple fault detection ( Or monitoring) Responsible for counting instrumentation of technology, also is not simple. Accurately and quickly and effectively to collect signals, data processing, manual or automatic identification and judgment. In order to confirm the repair cycle science, but also according to the mechanism of all kinds of fault, to fatigue, wear life necessary test and estimate. Bearing surface form of fatigue failure is a failure, mainly for fatigue crack initiation, expansion and fracture process, under alternating load generated by the fault of the long-term effects of the metal. Cracks in two aspects: 1, on the surface, this is in the process of rolling contact bearings, due to the work in the plastic deformation and strain hardening on the surface of the contact stress on the surface of the cyclical changes caused by the effect of external load, and finally on the inner surface of the small crack from the development, the formation of surface crack between the two, because Xie into the lubricant on the surface of the work, the power of the open, crack down on the wall, crack force to move forward; 2, from the surface, again and again under the pressure of the surface contact, the first where exposed on the surface of the crack depth of a crack, and along the surface direction Angle, to a certain depth, since on the surface of contact area, and beyond the surface, and finally form the corrosion, leaving a horse pit. From the bearing surface, or from the surface of the crack, the two objectives ( Part carburizing, quenching and other surface heat treatment, if after have uneven hardness, organization, and the internal stress of non-uniform and other adverse, the contact stress is generally have the opposite under the influence of ground fissure, if parts surface quality is poor, there is a defect ( Oxidation and decarburization) Poor lubrication, friction or from the surface crack. Accused of raceway acoustic methods are: using low noise bearing is bearing waviness is very small, that is, carefully select and use conditions. Race often affect the mechanical noise, reduce the raceway can reduce the mechanical noise.