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Analysis of the failure factors of INA bearing
Source: Bearing network time: 2018-07-04
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Significant looseness defects are not allowed on the bearing ring of the product. It will reduce the density of the ferrule; enrich the interior with more micropores; low melting point impurities; gas and non-metallic inclusions. It is the same as the banded carbide; it has the effect of cutting the continuity of the matrix; forming the composition segregation; the matrix is ​​brittle; greatly reducing the inductive mechanical function of the ferrule.
The martensite matrix is ​​non-concentration difference in quenching and tempering condition; higher micro hardness value and looseness defect; it is also a potential element that induces grinding cracks. The presence of non-concentration difference indicates that there is a severe band in the original arrangement. Carbide; thereby causing segregation of the carbon concentration between the belt and the belt; thus, after quenching, the difference between the superheating tendency of the belt and the unevenness of the Ms point is increased.
The connotation elements mainly refer to the three major factors of the layout quality, such as layout design, production process and data quality.
First of all; layout design is reasonable together with advanced; will have a long bearing life. Bearings are usually produced through casting, heat treatment, turning, grinding and installation, etc. The rationality of each processing technology The advanced nature and stability will also affect the life of the bearing. The heat treatment and grinding process that affect the bearing quality of the product are often more directly related to the failure of the bearing. In these years, the research on the external deformation layer of the bearing operation indicates The grinding process is closely related to the quality of the bearing appearance.
The metallurgical quality of INA bearing data used to be the primary factor affecting the early failure of rolling bearings. Following the advancement of metallurgical skills (such as vacuum degassing of bearing steel); the quality of the original data was improved. The original data quality factor accounted for in bearing failure analysis. The proportion has been significantly reduced; but it is still one of the primary factors affecting bearing failure. Whether the selection of materials is appropriate or not is still an essential element for bearing failure analysis.
The primary task of INA bearing failure analysis is based on a lot of set data, analysis data and failure modes; find out the primary factors that form the bearing failure; in order to propose improvement methods in an aligned manner; extend the service life of the bearing; Early failure of the hair.
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