Koyo import bearing damage and countermeasures

Koyo import bearing fatigue failure is a failure mode of appearance, mainly for the germination of fatigue crack, expansion and fracture process, under the alternating load generated by the problem of the long-term effects of the metal. Cracks in two aspects: 1, viewed from the outside, this is Koyo import bearing in the process of rolling contact, due to the appearance of plastic deformation and strain hardening appearance is formed by the contact stress of cyclical changes in the role of external load, and finally carried out in small crack from the appearance, the appearance of cracks formation between the two, because of work appearance Xie into smooth agent, the strength, crack down on the wall, open crack force to move forward; 2, from the surface, repeat, under the pressure of the appearance of the contact, the first in the center of the exposed appearance of certain depth, and along the direction of appearance point of view, to a certain depth, from after the contact surface appearance, and appearance, and finally form the corrosion, leaving a horse pit. Imports from Koyo bearing, or from the surface of the crack, the two purpose ( Parts carburizing, quenching heat treatment and other appearance, after if have uneven hardness, organization, and the average internal stress and other adverse, the contact stress from ordinary instead of open a rift, under the influence of outward appearance quality is poor, if the parts has a flaw, Oxidation and decarburization) Smooth, friction or bad, from the appearance of crack. Control rolling way voice way: choose low noise Koyo import bearing is bearing waviness is very small, that is, using carefully selected. Race often affect the mechanical noise, reduce the raceway can reduce the mechanical noise. Bearing in the use of the right to have a long life. If the presence of premature damage, may be due to selection error, improper use or smooth. Koyo import bearings when the device, therefore, we need record machine varieties, plant parts, using conditions and around to cooperate. After discussion summarizes the type of bearing damage, attack the problem when the use of the environment, in order to prevent similar situation again.