Evaluation method of tribology performance of self-lubricating joint bearing

Abstract

The invention discloses an evaluation method of tribology performance of self-lubricating joint bearings. The method includes the steps of: first, recording and macroscopically analyzing such dynamic data as friction coefficient and wearing capacity in a frictional wear test of the self-lubricating joint bearings; second, using a scanning electronic microscope, an energy spectrum analyzer and the like to microscopically analyze the friction surface of the self-lubricating joint bearings as well as the frictional wear mechanism, and further using a microphenomenon to verify the correctness of variation tendency of macroscopic frictional wear performance; and finally, adopting a three dimensional surface topography contourgraph to conduct three dimensional topography scanning on the friction surface of the self-lubricating joint bearings and quantitatively analyzing the wear status of the self-lubricating joint bearings by combining a three dimensional surface topography diagram and three dimensional topography parameter. The invention adopts three different methods to evaluate the tribology performance of the self-lubricating joint bearings, and all the methods are verified mutually, form cumulative progression and proceed from qualitatively to quantitatively, thus accurately, completely and roundly evaluating the tribology performance of the self-lubricating joint bearings.

Description

technical field [0001] The invention belongs to the technical field of tribology, and mainly relates to a method for evaluating the tribological performance of a self-lubricating joint bearing. Background technique [0002] With the rapid increase in the production level of self-lubricating spherical plain bearings, self-lubricating spherical plain bearings, as a key component that is in a state of dry friction, is subjected to reciprocating rotation in the circumferential direction, and is often subjected to heavy loads and impact loads. Performance has its own characteristics. The reciprocating swing of self-lubricating joint bearings is different from fretting because of its large amplitude, and is different from ordinary reciprocating linear motion because of reciprocating rotary motion. Therefore, the accurate evaluation of the tribological performance of self-lubricating spherical plain bearings under oscillating motion has become a key issue restricting its developme...

AI Technical Summary

Problems solved by technology

The measurement and analysis of friction coefficient and wear amount can reflect the macroscopic tribological performance of self-lubricating spherical plain bearings, but cannot reflect its microscopic friction and wear mechanism, and the evaluation of tribological performance is incomplete

At present, the most commonly used microscopic analysis method is to use scanning electron microscope to carry out surface microscopic analysis. The friction and wear mechanism is roughly explained by the surface morphology, and the analysis of the friction and wear mechanism is not accurate

At present, there is no report on the method of accurately and detailedly evaluating the tribological performance of self-lubricating spherical plain bearings at home and abroad.

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