Damage of bearings - rust corrosion
The rust and corrosion of the bearings include raceway, pit rust on the surface of the rolling body, full rust and corrosion. The rust and corrosion of the bearings will result in the pit rust of the rings, the surface of the rolling body, the same pit rust of the pear skin and the same spacing of the rolling body, and the total rust and corrosion.
There are many reasons for rust corrosion failure of rolling bearings, such as the invasion of water, corrosive substances (paint, gas, etc.), unsuitable lubricant, water droplets due to the condensation of water vapor, stopping at high temperature and humidity, poor rust prevention in the process of transportation, inappropriate storage state, inappropriate use and so on.
The solutions include improving the sealing device, studying the lubrication method, preventin rust when stopping, improving the storage method, and paying attention to it when used.
In addition to the above common failure forms, there are still many failure forms in the actual operation of rolling bearings, which need to be further analyzed and studied.
To sum up, from the common failure mechanism and failure mode of bearings, it can be seen that although rolling bearings are precise and reliable mechanism foundation, improper use will also lead to early failure.
In general, if bearings can be used correctly, they can be used until fatigue life. The early failure of bearings is mainly due to the manufacturing accuracy, installation quality, use conditions, lubrication effect, external foreign body invasion, thermal influence and sudden failure of the main engine, which are mainly caused by the manufacturing accuracy, installation quality, use conditions, lubrication effect, external foreign body invasion, thermal influence and sudden failure of the main engine.
Therefore, the correct and reasonable use of bearings is a systematic project. In the process of bearing structure design, manufacture and installation, corresponding measures can be taken to improve the service life of bearings and mainframes in the process of early failure.