Abstract
The paper describes a method for improving the reliability of a machine-tractor unit in technological processes. Two approaches aimed at improving the reliability of the least reliable elements are analyzed. To improve the reliability of power units, it is proposed to spray SiO2-based thin-film coatings on the working surfaces of plunger pairs. The calculations show that an increase in the service life of the plunger pairs is 2 ... 2.5 times higher than that of the serial ones. To improve the reliability of working machines, an example of the improved reliability of cultivator paws due to the modernization of their design is provided. Results of the comparative tests showed that the solutions make it possible to reduce the traction resistance when performing field works. In addition, it is possible to replace a nose of the cultivator paw.
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