Method for testing and evaluating antifriction abrasion resistance of lubricating oil by utilizing friction test machine

Abstract

The invention relates to a method for testing and evaluating antifriction abrasion resistance of lubricating oil by utilizing a friction test machine. The method comprises the following steps of arranging a lubricating oil sample into an oil storage box so as to enable a rotating friction wheel to be in surface contact with a fixed friction wheel under the condition that the rotating friction wheel is immersed in the lubricating oil sample, thus producing the slide friction; measuring the temperature of the lubricating oil sample by utilizing a temperature sensor at a plurality of preset discrete time points; measuring power supply current of a motor by utilizing a current measuring device; calculating and displaying friction resistance (f) by utilizing a friction resistance calculating and displaying unit, wherein the calculation formula is as follows: f=UI/rc, wherein f is the friction resistance, U is the power supply voltage, I is the power supply current, r is the rotation speed of the rotating friction wheel, and c is the perimeter of the rotating friction wheel; evaluating and/or comparing the antifriction abrasion resistance of the lubricating oil sample according to the measured temperature, current and friction resistance.

Description

technical field [0001] The invention relates to a performance test method, in particular to a simple test method for quickly detecting the anti-friction and anti-wear properties of lubricating oil. Background technique [0002] Now to test the anti-friction and anti-wear performance of liquid and semi-solid lubricating materials, the general methods are four-ball machine method, Timken method, etc., all of which have the following shortcomings that are difficult to overcome: 1. The instruments and equipment used in the method are expensive, bulky, and cannot be carried ; 2. The method is cumbersome to operate, time-consuming and expensive; 3. The method is highly specialized and difficult for non-professionals to understand and accept; Practical needs for evaluation comparisons. [0003] U.S. Patents US6349587 and US6199424 are portable universal friction testing machines and methods, which are used to detect the friction coefficient, contact pressure and direction of rubbe...

AI Technical Summary

Problems solved by technology

[0002] Now to test the anti-friction and anti-wear performance of liquid and semi-solid lubricating materials, the general methods are four-ball machine method, Timken method, etc., all of which have the following shortcomings that are difficult to overcome: 1. The instruments and equipment used in the method are expensive, bulky, and cannot be carried ; 2. The method is cumbersome to operate, time-consuming and expensive; 3. The method is highly specialized and difficult for non-professionals to understand and accept; Practical needs for evaluation and comparison

[0011] First of all, the utility model testing machine is not accurate in evaluating the anti-friction and anti-wear performance of lubricating oil through wear marks. There is no accurate standard to judge the size of wear marks, and the wear marks themselves are also irregular. Different people The judgment of wear marks is also different, which will lead to personnel errors

[0012] Secondly, after each test, the friction pair needs to be replaced and repaired, which increases manpower, material and financial resources

[0013] Furthermore, the temperature is easily affected by the external environment, so that the accuracy of the measurement results is not high

[0014] Finally, the utility model cannot obtain the test results in the first time, and needs to calculate

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