Railway freight rolling bearing appearance defects - stripping

Railway freight rolling bearing appearance defects - Stripping 2020 - 04 - 23 railway wagon wheel with bearing is usually made by the inner and outer ring, roller, retainer, grease and seal etc. Railway freight car rolling bearing is a kind of typical contact fatigue under parts, all in accordance with the use of the site may find fault forms bearing damage can be divided into the following several types: stripping, raceway grinding skin, race, color, race, pitting, corrosion, raceway surface rough, electric erosion, and bearing saddle poor contact, crack or split, knock against injury, micro wear, dent, indentation, etc. Mixer definition of railway freight car rolling bearings parts surface under the effect of the cycle of high contact stress of metal flake peeling phenomenon. Pieces of hurt characteristics of stripping is railway freight car rolling bearings parts work surface under the effect of the cycle of high contact stress of metal flake peeling phenomenon, has a certain depth and area; The uneven surface scaly; With the sharp Angle of groove. Usually render extension fatigue characteristics of stripes on the beach. Its form mainly include strip stripping, dot, sheet, block stripping stripping, etc. Among them, the massive detachment is a relatively new type of strip shape. Pieces of hurt part stripping more appear in railway freight car rolling bearing inner and outer ring raceway surface and roller rolling surface. Pieces of hurt cause low rolling contact fatigue damage. Too low bearing contact load or abnormal load of impact load, such as with bad condition of bearing saddle fit or have serious wheel tread scratches, etc. , cause local overload fatigue. Low bearing component material purity low or improper heat treatment technology. Low bearing high additional contact stress between components caused by improper assembly. Low bad lubrication. There was a strip rolling surface, pitfalls in the classification of degree of mixer categories for C. （ Source: the resources of railway vehicle platform)