Surface enhancing and lubricating process for long-life bearing

A surface strengthening and long-life technology, applied to bearing components, shafts and bearings, metal material coating processes, etc.

Inactive Publication Date: 2006-08-16
陈治贵
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Whether it is simple sulfurization or simple addition of lubricants, there are cert

Method used

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Embodiment Construction

[0024] The present invention adopts following processing steps:

[0025] (1) Put the bearing inner and outer rings and rolling element parts made of GCr15 steel into a salt bath furnace with nitrogen-carbon (rare earth) co-infiltration agent, and undergo heat preservation and co-infiltration treatment at 580 ° C for 3 hours;

[0026] (2), take out and air-cool and then clean;

[0027] (3) Put the cleaned bearing inner and outer rings and rolling element parts into a salt bath quenching furnace, heat to 850°C, keep warm until the temperature is uniform, take out the oil to cool, and then carry out a low-temperature return at 180°C for 2 hours fire treatment;

[0028] (4) After cooling and cleaning, the bearing inner and outer rings and rolling element parts are finely ground and polished;

[0029] (5) Put the inner and outer rings of the bearing into the salt bath vulcanization tank, heat to 130-150°C, and keep it warm for 3 hours. After the sulfuration treatment, wash, dry, ...

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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...

Claims

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Application Information

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IPC IPC(8): C23F17/00C23C8/56C21D1/607C21D11/00F16C33/00
Inventor 陈治贵
Owner 陈治贵
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