Vibrations in engineering and technology

Dudnikov Anatoly – Candidate of Technical Sciences, Professor, Professor of the Department of Technology and Means of Mechanization of Agricultural Production of the Poltava State Agrarian Academy (1/3 Skovoroda St., Poltava, 36003, e-mail: anatolii.dudnikov@pdaa.edu.ua)

Dudnyk Volodymyr – Candidate of Technical Sciences, Associate Professor of the Department of Life Safety of Poltava State Agrarian Academy (1/3 Skovoroda St., Poltava, 36003, e-mail: volodymyr.dudnyk@pdaa.edu.ua)

Burlaka Oleksiy – Candidate of Technical Sciences, Associate Professor, Associate Professor of the Department of Technology and Means of Mechanization of Agricultural Production of Poltava State Agrarian Academy (1/3 Skovoroda St., Poltava, 36003, e-mail: oleksii.burlaka@pdaa.edu.ua)

Kanivets Oleksandr – Candidate of Technical Sciences, Associate Professor, Associate Professor of the Department of Technology and Means of Mechanization of Agricultural Production of Poltava State Agrarian Academy (1/3 Skovoroda St., Poltava, 36003, e-mail: oleksandr.kanivets@pdaa.edu.ua)

The analysis of the work of tillage machines is carried out, the reasons for the failures of their working bodies (plowshares) during operation are revealed.

Research has been carried out on the change in the characteristics of the material of the cutting elements of soil-cultivating machines after vibration hardening, as well as the effect of hardening on the strength of restored plow shares. The parameters of vibration hardening of plow shares are experimentally determined.

Microstructural studies were carried out in order to reveal the influence of the processing method on the properties of the plowshares material. Criteria for the limiting state of plowshares are revealed. Bench tests of plow shares at the installation allow you to adjust the intensity of their wear.

It has been established that the depth of wear of the ploughshare material is the most significant geometric parameter affecting its resource.

Experimental studies have established the values of the main parameters of vibration hardening: the frequency and amplitude of oscillations of the working working tool and the hardening time. The values of the degree of hardening of the material of the cutting edge of the reconditioned plow shares have been determined.

The relationship between the values of the change in the width of the ploughshare and the thickness of its blade during deformation has been established. It was found that, in addition to the processing modes, the shape of the processing tool affects the geometry of the share. An uneven wear pattern along the length of the share is revealed.

The results of changes in the wear along the width of the cutting element and the intensity of its wear depending on the operating time are given. It has been established that the amount of wear of the plowshare cutting element depends on the technological modes of processing and the material.

Conducted bench studies of the specified variants of plowshares in order to check the operational reliability of the restored and vibration-hardened plow shares. It was found that the plowshares made of 65G steel, treated by vibration hardening, had the lowest wear rate, which is explained by the change in the structure of its material during vibration hardening.

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