When the sliding bearing is in operation, the friction between the journal and the bearing bush will cause friction, which will cause the surface to heat up and wear and even “bite”. Therefore, when designing the bearing, the sliding bearing material with good friction reducing property should be used to manufacture the bearing bush, suitable lubricant. And use the appropriate supply method to improve the structure of the bearing to obtain thick film lubrication.
1, tile surface corrosion: spectral analysis found that the concentration of non-ferrous metal elements is abnormal; there are many sub-micron wear particles of non-ferrous metal components in the spectrum; lubricating oil moisture exceeds the standard, acid value exceeds the standard.
2, the surface corrosion of the journal: Spectral analysis found that the concentration of iron is abnormal, there are many sub-micron particles of iron in the iron spectrum, and the moisture of the lubricating oil exceeds the standard or the acid value exceeds the standard.
3, the surface of the journal is strained: there are iron-based cutting abrasive grains or black oxide particles in the iron spectrum, and there is tempering color on the metal surface.
4, fretting wear behind the tile: spectral analysis found that the iron concentration is abnormal, there are many iron components in the iron spectrum sub-micron wear particles, lubricating oil moisture and acid value is abnormal.
5, bearing surface strain: found in the iron spectrum cutting abrasive particles, abrasive particles are non-ferrous metals.
6, tile surface peeling: found in the iron spectrum there are many large-scale fatigue spalling alloy wear particles, layered abrasive particles.
7, bearing burning tile: There are more large-sized alloy abrasive grains and black metal oxide in the iron spectrum.
8, bearing wear: due to the metal characteristics of the shaft (high hardness, poor retractability) and other reasons, easy to cause adhesive wear, abrasive wear, fatigue wear, fretting wear and other conditions.
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