Surface enhancing and lubricating process for long-life bearing

Abstract

The invention is about the surface peening and greasing process of a long life shafting bearing. It can solve the shot life of the GCr15 steel rolling shafting bearing by the process of the traditional quenching and lonnealing. It includes: put the collar and the rolling element into the salt-bath furnace with the C-N seeping agent to treat for 2-4h in 600DEG C; Put the washed parts into the salt-bath hardening furnace to heat to 830-850DEG C, then to oil cooling, next to lonneal for 2h in 160-180DEG C; Polish. The invention can improve the antisticking, seizure resistance and the using life.

Description

technical field

[0001] The invention belongs to the technical field of surface treatment of bearing parts, and in particular relates to the surface strengthening and lubricating process of rolling bearing parts made of GCr15 steel. Background technique

[0002] Bearings are one of the most widely used parts in the mechanical field. They can be divided into two categories: sliding bearings and rolling bearings. Due to the small friction coefficient of rolling bearings, easy starting and mass production, and low manufacturing costs, they are used in production. It has been widely used in practice.

[0003] Bearing components work under very complex and severe conditions, and are subjected to various high alternating stresses, such as tension, compression, shear, friction stress, etc. Rolling bearings are damaged in various ways, such as peeling, stuck holes, ring fracture, flattening, crushing, wear, corrosion and other failure forms. Therefore, in order to improve the servi...