Core Tip: The cause of the failure of imported bearings is often multi-factor. The influencing factors of all design and manufacturing processes will be related to the failure of imported bearings, and it is difficult to judge by analysis. In general, large
The reasons for the failure of imported bearings are often multi-factorial. The influencing factors of all design and manufacturing processes will be related to the failure of imported bearings, and it is difficult to judge by analysis. In general, it can be considered and analyzed in terms of both usage factors and internal factors.
The use factors mainly refer to whether the installation adjustment, use and maintenance, maintenance and repair, etc. meet the technical requirements. The installation condition is one of the primary factors in the use factor. The imported bearing is often changed due to improper installation, and the force state between the parts of the whole bearing changes, and the bearing runs in an abnormal state and fails early. According to the technical requirements for the installation, use, maintenance and maintenance of imported
bearings, monitor and check the load, speed, working temperature, vibration, noise and lubrication conditions of the bearing in operation, find the cause and find the cause immediately, and make adjustments. It returned to normal. In addition, it is important to analyze the quality of the grease and the surrounding medium and atmosphere.
The internal factors mainly refer to the three major factors that determine the quality of imported bearings, such as structural design, manufacturing process and material quality.
First of all, the structural design is reasonable and advanced, so that it will have a long bearing life. Bearings are generally manufactured through multiple processes such as forging, heat treatment, turning, grinding and assembly. The rationality, advancement and stability of each processing technology will also affect the life of the bearing. The heat treatment and grinding processes that affect the quality of the finished bearing often have a more direct relationship with the failure of the bearing. In recent years, research on the metamorphic layer of bearing working surface shows that the grinding process is closely related to the bearing surface quality.
The metallurgical quality of imported bearing materials was once the main factor affecting the early failure of rolling bearings. With the advancement of metallurgical technologies (such as vacuum degassing of bearing steels), the quality of raw materials has improved. The proportion of raw material quality factors in bearing failure analysis has dropped significantly, but it is still one of the main factors affecting bearing failure. The proper selection of materials is still a factor that must be considered in bearing failure analysis.
The main task of the failure analysis of imported
bearings is to find out the main factors causing bearing failure based on a large amount of background materials, analysis data and failure modes, so as to propose improvement measures in a targeted manner, prolong the service life of bearings and avoid sudden occurrence of bearings. Early failure of sex.
