This paper introduces the fretting wear characteristics of railway bearing forgings, including the mechanism of fretting wear, the influencing factors and the changes in the later wear period, and puts forward the corresponding protective measures. By taking effective protective measures, the service life of railway bearing forgings can be extended, and the operation efficiency and safety of locomotive can be improved.
Railway bearing forgings are the key parts of rolling stock, which need to bear greater load and friction. During long-term operation, bearing forgings will wear and damage due to fretting wear, which will affect the operation performance and safety of the locomotive. Therefore, it is important to understand the fretting wear characteristics of railway bearing forgings and take effective protective measures.
Fretting wear refers to the wear phenomenon of two contact surfaces under small vibration or sliding. Fretting wear of railway bearing forgings is mainly affected by the following factors: load, vibration frequency, lubrication conditions, material properties and so on. In the process of fretting wear, the surface of bearing forgings will be damaged by oxidation, spalling and cracking, resulting in material loss and performance decline.
In order to reduce the fretting wear of railway bearing forgings, the following protective measures can be taken:
Optimize material selection: Select materials with excellent wear resistance and fatigue strength to improve the wear resistance and fatigue resistance of bearing forgings.
Surface strengthening treatment: The use of surface strengthening technology, such as carburizing, nitriding, etc., to improve the hardness and wear resistance of the surface of bearing forgings.
Lubrication management: Strengthen lubrication management, ensure good lubrication conditions, reduce friction coefficient, reduce wear.
The fretting wear characteristics and protective measures of railway bearing forgings are verified by laboratory simulation experiments. The results show that the above protective measures can effectively improve the wear resistance and fatigue resistance of bearing forgings and prolong their service life.
The fretting wear characteristic of railway bearing forgings is an important factor affecting the running performance and safety of locomotive. By taking effective protective measures, the service life of railway bearing forgings can be extended, and the operation efficiency and safety of locomotive can be improved. In the future, with the continuous progress of science and technology, the manufacturing technology and performance of railway bearing forgings will continue to improve, providing a better guarantee for the development of the railway industry.
