Method and device for detecting frictional characteristics of strengthened curved surface

Abstract

The invention relates to a method and a device for detecting frictional characteristics of a strengthened curved surface and belongs to the field of frictional characteristics of friction pair surfaces. The method and the device are mainly used for detecting the frictional characteristics of the strengthened curved friction pair surface. The device comprises a roller which is subjected to surface strengthening, sheet metal, a probe sensor, a bridge box, a strain gage, an analog to digital (A / D) converter and a computer which is used for data processing and analyzing. The device is characterized in that the roller and the sheet metal performs reciprocating relative movement so that friction coefficients between the sheet metal and the strengthened roller can be real-timely detected through the probe sensor, and finally frictional characteristic distribution of the strengthened curved friction pair surface and change laws of the friction coefficients during working over time can be obtained. The method and the device have the advantages that by means of the device, the frictional characteristics of the strengthened curved friction pair surface can be detected, the controllability is good, the practicability is high, and the device plays an important role in studying surface modification techniques.

Description

technical field [0001] The invention relates to the field of friction characteristics of the surface of a friction pair, especially a method and device for detecting friction characteristics of a curved surface after modification, modification and strengthening treatment, and is mainly applicable to the detection of friction characteristics of the surface of parts that have undergone surface strengthening treatment under special working conditions . Background technique [0002] With the rapid development of manufacturing industry, materials with superior performance are more and more popular. However, in order to reduce costs and improve economic benefits, the surface treatment technology can be used to endow low-cost material surfaces with the properties of some advanced materials. Based on this, surface strengthening technologies have emerged in an endless stream in recent years. Surface strengthening treatment technologies mainly include surface quenching treatment, ch...

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Problems solved by technology

[0008] 2) The object detected by the test device for the friction characteristics of the curved surface friction pair does not involve the strengthened surface, and the result obtained by using this test method and the calculation formula of the friction coefficient is the friction coefficient on the entire curved surface, which is a function of time , but it is not a function of the spatial position, so the distribution of the friction coefficient on the surface cannot be obtained;

[0009] 3) According to the calculation formula of the friction coefficient of the curved surface friction pair, it must be corrected to remove the influence of the bending force of the sheet metal on the measurement results, and the data processing is cumbersome, which will cause errors in the results;

[0010] 4) Using the probe method to directly detect the friction coefficient is only applied to the plane friction pair, and the surface after strengthening treatment and the curved surface friction pair have not been involved

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