Running-in method for realizing water lubrication matching pair ultralow friction

Abstract

The method discloses a running-in method for realizing water lubrication matching pair ultralow friction. The running-in method comprises (1) according to the actual operating conditions of parts, setting the same load and speed, carrying out the initial pre-running-in for 300s under the condition of water lubrication, carrying out unloading shutdown, carrying out separation of the moving part and static part, and removing abrasive particles produced between friction interfaces in the pre-running-in stage, (2) carrying out running-in under the actual operating conditions for 300s, carrying out overloading running-in under the condition of work load 2-3 times actual work load for 600s, increasing the load to 4-5 times actual work load, and carrying out running-in for 600s, and 3) carrying out unloading shutdown, carrying out ultrasonic cleaning on the sample surface, cleaning a chamber, and replacing water with new water so that abrasive particle-caused influence is completely prevented. The running-in method is different from the traditional light-load running-in method, greatly shortens the running-in cycle, significantly improves the working efficiency of the parts, and can achieve an ultra-low friction state, wherein the water lubrication matching pair has a friction coefficient less than 0.01.

Description

technical field [0001] The invention relates to a running-in method for realizing ultra-low friction of water-lubricated mating pairs, which is different from the running-in method suggested by traditional tribological theory under light load. Ultra-low friction state with friction coefficient less than 0.01. Background technique [0002] Water is safe and pollution-free, has a wide range of sources, and has a large specific heat. It is the best lubricating medium for human beings to replace traditional lubricating oil. It can effectively alleviate the pressure of energy resource crisis and environmental pollution. It meets the strategic requirements of sustainable development. It is currently used in nuclear power, ships, etc. Important fields have been widely used, and key components such as water-lubricated bearings and seals are the most representative. However, the low viscosity of water greatly reduces the film-forming ability of the lubrication zone and deteriorates ...

AI Technical Summary

Problems solved by technology

Although the research on the running-in process has been going on for nearly 80 years, the friction and wear mechanism of the friction pair in the running-in process is still unclear. Therefore, the understanding of traditional theories should be relatively conservative, and the important value of the running-in friction stage has not been fully explored.

In addition, due to the special physical and chemical effects of the water medium, the application of water lubrication technology has only been used for 30 years, so the exploration and research on the running-in process of water-lubricated friction pairs is even more backward; by controlling the running-in process, the friction coefficient of water-lubricated mating pairs Ultra-low friction less than 0.01, and there is no related invention patent published at present. If it can be realized, it will have important practical significance for solving the bottleneck of water lubrication interface wear