Friction wear testing device for online measuring abrasion loss in vacuum environment

Abstract

The invention discloses a friction wear testing device for online measuring abrasion loss in a vacuum environment. The testing device comprises a friction coefficient measuring mechanism arranged on a substrate and a wear surface contour measuring mechanism. The testing device also comprises a vacuum cap. The vacuum cap is covered on the substrate so as to form a vacuum environment between the vacuum cap and the substrate. The testing device can quickly evaluate the friction wear property of a material in a vacuum environment. The vacuumizing is only performed once during the experiment process, moreover, the vacuumizing time is shortened, frequent vacuumizing is avoided, the test efficiency is largely improved, and furthermore, the friction radius can be adjusted flexibly. At the same time, linear speeds in a wide range can be obtained through changing the rotation speed of a motor, the cost is low, the sealing performance is good, and the maintenance during the using process can be performed more conveniently.

Description

technical field [0001] The invention belongs to the technical field of friction and wear testing devices, and relates to a friction and wear testing device for online measurement of wear amount in a vacuum environment. Background technique [0002] There is no gas convection in a vacuum environment, a large amount of frictional heat generated on the surface of the moving pair cannot be dissipated in time, the temperature in the contact area will rise rapidly, and the physical and chemical properties of the material in the contact area will be significantly deteriorated, such as: metal in a vacuum environment Contact surfaces are more prone to adhesive wear. With the development of aerospace technology, a lot of aerospace equipment operating in a vacuum environment has been produced. The motion pairs of a large number of aerospace equipment are caused by friction and wear, which leads to a decrease in the motion accuracy of parts and even failure of the whole machine, causing...

AI Technical Summary

Problems solved by technology

With the development of aerospace technology, a lot of aerospace equipment operating in a vacuum environment has been produced. The motion pairs of a large number of aerospace equipment are caused by friction and wear, which leads to a decrease in the motion accuracy of the parts and even failure of the whole machine, causing a lot of losses.

[0003] At present, most of the existing vacuum friction and wear test devices have the problem that only one friction test with a constant friction radius can be performed under the condition of one vacuum pumping, or the friction radius can be adjusted but the tested material cannot be replaced

It is not possible to test different materials, different loads, and different radii under the condition of vacuuming once

More importantly, the topography measurement of the worn surface of the current friction testing machine needs to take the sample out of the test environment, and then measure it through the surface topography instrument. Very inefficient and difficult to quickly assess wear resistance of materials

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