When we use sliding bearings, we often find that this sliding bearing is different from the original one. This is because the sliding bearing will produce friction due to the contact between the journal and the bearing bush during operation, resulting in surface heating, wear and even “seizure”. Therefore, when designing the bearing, the sliding bearing material with good anti-friction properties should be used to make the bearing bush. Appropriate lubricants and use appropriate supply methods to improve the structure of the bearing to obtain thick film lubrication.
Next, let me introduce the types of sliding bearing damage?
1. Strain on the journal surface: there are iron-based cutting abrasive particles or black oxide particles in the iron spectrum, and the metal surface has a tempered color.
2. Bearing wear: Due to the metal properties of the sliding bearing shaft (high hardness and poor concession) and other reasons, it is easy to cause adhesion wear, abrasive wear, fatigue wear, fretting wear and other conditions.
3. Corrosion of tile surface: 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; the water content of lubricating oil exceeds the standard and the acid value exceeds the standard.
4. Fretting wear on the back of the tile: Spectral analysis found that the iron concentration is abnormal, there are many iron submicron wear particles in the iron spectrum, and the lubricant moisture and acid value are abnormal.
5. Bearing burning: there are more large-size alloy abrasive particles and ferrous metal oxides in the iron spectrum of sliding bearings.
6. Tile surface spalling: There are many large-size fatigue spalling alloy wear particles and layered abrasive particles found in the iron spectrum.
7. Bearing surface strain: cutting abrasive particles are found in the iron spectrum, and the components of the sliding bearing abrasive particles are non-ferrous metals.
8. Corrosion on the journal surface: Spectral analysis found that the concentration of iron is abnormal, there are many submicron particles of iron in the iron spectrum, and the water content or acid value of the sliding bearing lubricant exceeds the standard.
