A film thickness test method of pin-disc friction machine under oil lubrication condition

Abstract

The invention discloses a membrane thickness testing method for a pin disc type friction machine under an oil lubrication condition, and belongs to the technical field of oil membrane thickness measurement and property evaluation. The membrane thickness testing method comprises the following basic steps: measuring reference data H0, namely, in an oil-free state, rotating a friction disc at a low speed, and confirming a measurement value H0 acquired by a displacement sensor in the process as the reference data; measuring experiment data HT, namely, adding lubricating oil, correspondingly controlling the load applied to an experiment pin and the rotation speed of the friction disc according to the requirements of experiment working conditions, and confirming the measurement value HT acquired by the displacement sensor in the process as experiment data; subtracting the data of H0 in a corresponding position of the friction disc from data of HT of the data group, and calculating to obtain the oil membrane thickness delta H in the corresponding position. By controlling testing parameters such as the applied load of the experiment pin, the rotation speed of the friction disc, and a lubricating medium, a material limit pv value can be measured, the relationship of component ineffectiveness and the pv value is obtained, the measurement data of the membrane thickness under the influence of different factors is obtained, and furthermore the mechanism-based research on friction abrasion is completed.

Description

technical field [0001] The invention belongs to the technical field of oil film thickness measurement and performance evaluation, and in particular relates to a film thickness test method of a pin-disc friction machine under oil lubrication conditions. Background technique [0002] The friction pair is an important component of the mechanical transmission system, and the friction and wear performance of the friction pair has an important impact on the performance and reliability of the mechanical transmission system. At present, the research on the friction and wear properties of friction pair materials in engineering generally requires the use of friction and wear testing machines. The testing machines widely used in domestic tribology research include roller wear testing machine, four-ball friction and wear testing machine, reciprocating friction and wear testing machine, cut-in friction and wear testing machine, pin-on-disk friction and wear testing machine, etc. Among t...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, in order to solve the problem that the specific value of the film thickness cannot be quantitatively measured and the film thickness cannot be measured under the mixed lubrication state, and a pin-on-disk friction machine under the oil lubrication condition is proposed. Film thickness test method, and then use the oil film thickness to accurately analyze the friction and wear properties of materials and the lubrication characteristics of lubricating media

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