A full complement cylindrical roller bearing can never wear out and can be used for a long time. Many people will say that it is a dream, but today I want to say that this can be realized, not a dream. The research team led by Professor Wei Fei of Tsinghua University announced that the macro-scale super-lubrication phenomenon in the atmospheric environment was detected for the first time in the world, which brought a ray of hope for mankind to overcome friction in the future; once super-lubricated materials and devices are manufactured, A mechanical watch that never stops after the last clockwork, and a bearing that never wears out are no longer a dream. In the past, about one-half of the energy of cylindrical roller bearings was consumed in the friction process. This is not China. Even in developed countries, the loss caused by wear and tear accounts for five to seven percent of GDP. With the growth of material prices, many companies put more energy on reducing the surface friction and prolonging the life of the material. The only solution now is to find a way to achieve super lubrication. But does superlubrication really exist? Even if it exists, how can it be achieved? Experiments by many scientists over the past 20 years have shown that it is almost impossible to achieve superlubrication under normal conditions. But recently scientists have found that large-scale relative sliding can occur between two adjacent walls of carbon nanotubes, which is an ideal material for the study of superlubricity. The researchers were the first to create perfect carbon nanotubes and demonstrate that the carbon nanotubes are free of defects up to several centimeters long. However, the diameter of carbon nanotubes is only a few nanometers, which is about one ten thousandth of a human hair, and the length can reach several centimeters. It is very difficult to accurately measure the relative motion between the inner tube and the outer tube. The research team devised a novel labeling method. They loaded many titanium dioxide nanoparticles on the surface of carbon nanotubes, which can scatter visible light. By observing the change in the distance between these nanoparticles, the inner and outer tubes of carbon nanotubes can be obtained. Superslip information between layers. In the experiment, the researchers observed rapid relative sliding between the inner and outer walls of centimeter-length carbon nanotubes, and measured ultra-low friction between the tube walls, thus proving the phenomenon of superlubrication. It is worth mentioning that they also found that when some nano-sheet structures are loaded on the outer wall of the carbon nanotubes that are broken at both ends, one can naturally form, and it can run at high speed with a light breath, which also indirectly proves. Superlubrication phenomenon. From the above article, we can see that it is possible to achieve super-lubrication. Once super-lubrication is achieved, the service life of that bearing and the lubrication effect will be more gratifying if it is used in the bearing industry in the future. Let's wait and see.
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