Self-lubricating bearings visual inspection method

Identification of how the quality of a product, the first is to look from the appearance. For precision products --- self-lubricating bearings is no exception. How should detect it from the outside? Where the focus detection is it? Handsome self-lubricating bearings engineers to explain everything.
      Check the self-lubricating bearings should be carried out in astigmatism lamp, the appearance of self-lubricating bearings, cracks and other parts of careful observation.
1, various mechanical injuries, such as galling, scratching, crushing, bumps, etc., will adversely self-lubricating bearings installed, causing partial load and stress concentration, resulting in a decline rotation accuracy and service life.
2, rust, black and pitting, the latter two are easy to store moisture and dirt defects, most likely to develop into rust. The corrosion is resulting in poor installation, the sources of early wear and fatigue, severe corrosion make self-lubricating bearings scrapped.
3, various cracks, such as raw materials, crack, crack forging, heat treatment, grinding cracks and cracks, these cracks during the operation in the future self-lubricating bearings, and will become a source of stress concentration and rapid expansion, resulting in rupture self-lubricating bearings, self lubricating bearing life and work safety great impact. In fact, self-lubricating bearings for important purposes, self-lubricating bearings factory has 100% or radiographic inspection to check its magnetic component parts.
4, peeling and folding, local and base metal combination of these two defects is not strong, and its surroundings often exist to varying degrees decarburization or carbon-poor phenomenon, the material is easy to caving, staking or wear, self-lubricating bearing life and Accuracy is very unfavorable.
5, riveting or welding quality cage, the main observation rivet head is deviation, skew, relaxation, lack of meat or 'eyelid' position welding is correct, solder joints too big or too small, whether strong or welding welding caused by excessive body roll stuck phenomenon.
More than a few are part of our focus on examination of lubrication in the inspection from bearing, in addition to part of the examination, and the other as typing poor quality, such as illegible, damaged, defective should be considered seriously, but also non-acceptance.