VIBRATION TECHNOLOGIES IN THE RESTORATION OF THE WORKING BODIES OF AGRICULTURAL MACHINES

Abstract

The paper deals with the use of vibration vibrations in the restoration of the working bodies of agricultural tillage machines operating under conditions of increased abrasive wear. The analysis of the existing methods of their restoration is carried out, the substantiation of the use of vibration hardening treatment in repair production is given. The research carried out on the choice of the optimal parameters of vibration strengthening of the cutting working bodies contributes to an increase in the wear resistance and reliability of soil cultivation equipment. According to the research results, the change in hardness along the depth of the surface layer of cutting elements of the following agricultural tillage machines: plow shares, opener discs of grain seeders and cultivator paws was established. Optimal values of the main parameters of vibration processing of cutting elements of the specified working bodies are experimentally determined and substantiated, which reduce the amount of their wear: amplitude A and vibration frequency of the processing tool n, hardening time t. The change in the magnitude of linear wear along the width of the cutting elements of these parts is shown, as well as data on the intensity of their wear. Experimentally obtained data on the absolute and relative wear of the diameter and thickness of the blade of the opener discs, which made it possible to choose a more efficient technology for their restoration. According to the research results, it was found that the specified parts of soil cultivation equipment had the least wear value; they were restored by welding tires, plates or segments from steel 45, followed by surfacing with sormite and strengthened by vibration deformation. The results of the work will be used to develop technological processes for the restoration of other working bodies of tillage machines by the method of vibration deformation. Annotation The paper deals with the use of vibration vibrations in the restoration of the working bodies of agricultural tillage machines operating under conditions of increased abrasive wear. The analysis of the existing methods of their restoration is carried out, the substantiation of the use of vibration hardening treatment in repair production is given. The research carried out on the choice of the optimal parameters of vibration strengthening of the cutting working bodies contributes to an increase in the wear resistance and reliability of soil cultivation equipment. According to the research results, the change in hardness along the depth of the surface layer of cutting elements of the following agricultural tillage machines: plow shares, opener discs of grain seeders and cultivator paws was established. Optimal values of the main parameters of vibration processing of cutting elements of the specified working bodies are experimentally determined and substantiated, which reduce the amount of their wear: amplitude A and vibration frequency of the processing tool n, hardening time t. The change in the magnitude of linear wear along the width of the cutting elements of these parts is shown, as well as data on the intensity of their wear. Experimentally obtained data on the absolute and relative wear of the diameter and thickness of the blade of the opener discs, which made it possible to choose a more efficient technology for their restoration. According to the research results, it was found that the specified parts of soil cultivation equipment had the least wear value; they were restored by welding tires, plates or segments from steel 45, followed by surfacing with sormite and strengthened by vibration deformation. The results of the work will be used to develop technological processes for the restoration of other working bodies of tillage machines by the method of vibration deformation.