Multifunctional vacuum friction and wear testing machine

Abstract

A multi-functional vacuum friction and wear testing machine, which can not only simulate special environmental atmospheres such as vacuum, radiation, and corrosion, but also perform tribological tests in a wide range of speeds and loads with various contact methods (ball-disk, pin-disc). test. It is mainly composed of vacuum system, friction and wear system, power transmission system, measurement and control system, etc. Each subsystem is highly integrated, and no other auxiliary devices are needed during the test. Wherein the friction and wear system includes a lever structure (22) that is used to fix the upper sample fixture (20) and can rotate freely in both horizontal and vertical directions, and lift up and down in the vertical direction, and the lever structure (22) includes A cantilever beam (18) and a vertical arm (23) that are vertically arranged, the cantilever beam (18) and the vertical arm (23) can be assisted by the glass observation window and the internal high-precision displacement platform on the vacuum chamber, through The manipulator (15) and the handwheel mechanism (13) running through the vacuum chamber can adjust the horizontal and vertical positions without breaking the vacuum degree of the control system, so as to realize the movement of the upper sample holder (20) in two degrees of freedom. Move with precision. A temperature sensor (2) and a pressure sensor (3) are installed on the upper sample fixture (20), and the temperature sensor is inserted into the center of the upper sample close to the friction interface to measure and calculate the temperature change during the friction test. The equipment is mainly used to test the tribological properties of materials and devices in a simulated space high vacuum environment.

Description

technical field [0001] The invention belongs to the field of material and device performance testing, and in particular relates to a multifunctional vacuum friction and wear testing machine capable of simulating the effect of space environment factors (such as high vacuum environment) and testing the performance of friction materials and devices. Background technique [0002] With the development of high technology such as aerospace, many equipment such as spacecraft are operating in a high vacuum environment (10 -5 Pa~10 -7 Pa level), the vacuum environment will bring special tribological problems. For example, lack of oxygen and other atmospheric reactants in the vacuum, the oxide film on the metal surface is quickly removed during the friction process, and it is difficult to form a new oxide film. Therefore, the friction surface is quickly in a "bare" state, and the fresh metal surface Severe adhesion occurs due to direct contact between them; there is no diffusion and ...

AI Technical Summary

Problems solved by technology

However, the current market price of this type of equipment is relatively high, and the minimum configuration is more than 200,000 US dollars, and the purchase and after-sales service are not very convenient.

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