Date: 2013-08-20

Failure analysis of affecting the TIMKEN bearing service life of

TIMKEN bearing metallurgical quality of the materials used to be the main factors affecting the early failure of rolling bearings. As metallurgical technology (such as bearings, such as vacuum degassing of steel) of the progress, raw materials quality has been improved. Raw materials of quality factors in the failure analysis of bearing the proportion has declined significantly, but it is still one of the main factors bearing failure. Selection of propriety are still bearing failure analysis of factors that must be taken into account.
1, tile surface corrosion: spectral analysis found non-ferrous metal elements concentration exception; iron spectrum appears in a number of non-ferrous metal components of sub-micrometer-diameter wear particles; lubricant excessive moisture, excessive acid.
2, Journal of surface corrosion: spectral analysis of iron concentrations found exceptions, many of ferrographic iron composition of submicron particles, lubricant excessive moisture or excessive acid.
3, axis, surface of neck injury: ferrography is cutting abrasive or black iron oxide particles, metal surface temper.
4, tile back fretting wear: spectral analysis of iron concentrations found exceptions, many of ferrographic submicron wear particles of iron components, lubricants water and acid value exception.
5, bearing surface injury: iron found in the spectrum of cutting abrasive, abrasive compositions for non-ferrous metals.
6, tile or tiles: iron spectrum are found in many of the large size of wear particles in fatigue spalling alloy wear particles, layer.
7, bearing Bush burning: iron spectrum more large alloys and ferrous metals oxides of wear particles.
TIMKEN bearings manufacture generally after forging, heat treatment, machining, grinding and assembling multi-channel processes. Rationality, advanced processing technology, will also affect the stability of the bearing life. Which affect the quality of finished product bearing heat treatment and machining processes, often has a more direct relationship with bearing failures. On bearing surface modification layer of work in recent years studies have shown that close to grinding and surface quality of bearing.
TIMKEN main bearing service life analysis tasks, is based on the large amount of background material, analysis of data and failure mode, identify the main factors causing bearing failure, so targeted for improvement measures, extending the service period of bearing, avoid unexpected early bearing failure.

 

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