This paper discusses the influence of surface integrity of locomotive bearing forgings on its performance, including surface roughness, surface hardness and surface residual stress. The influence of surface integrity on fatigue life, friction and wear performance and corrosion resistance of bearing forgings is revealed through the analysis of experimental results, which provides a theoretical basis for improving the performance of locomotive bearing forgings.
Locomotive bearing forging is a key part of railway vehicles, and its surface integrity has an important impact on the performance and service life of bearings. Therefore, it is of great significance to study the influence of surface integrity of locomotive bearing forgings on its performance to improve the quality and reliability of bearing forgings.
The factors affecting the surface integrity of locomotive bearing forgings mainly include surface roughness, surface hardness and surface residual stress. These factors have important effects on the fatigue life, friction and wear properties and corrosion resistance of bearing forgings.
Effect of surface roughness on performance: Experimental results show that reducing surface roughness can improve the fatigue life and friction and wear performance of bearing forgings. This is because reduced surface roughness reduces stress concentration and frictional resistance, thereby reducing fatigue damage and wear.
Influence of surface hardness on performance: Increasing surface hardness can improve the wear resistance and fatigue life of bearing forgings. This is because increased hardness can increase the wear resistance and fatigue resistance of the material.
Influence of surface residual stress on performance: Appropriate surface residual compressive stress can improve the fatigue life and corrosion resistance of bearing forgings. This is because the residual compressive stress can reduce the tensile stress inside the material, reducing fatigue damage and corrosion.
According to the experimental results, surface integrity has an important effect on the performance of locomotive bearing forgings. Therefore, in the production process of bearing forgings, attention should be paid to controlling surface roughness, improving surface hardness and introducing appropriate surface residual compressive stress to improve the performance and service life of bearing forgings.
In this paper, the influence of surface integrity of locomotive bearing forgings on its performance is studied, and the influence of surface roughness, surface hardness and surface residual stress on fatigue life, friction and wear performance and corrosion resistance of bearing forgings is revealed. These research results provide a theoretical basis for improving the performance of locomotive bearing forgings, and help to guide the production and optimal design of bearing forgings.
