Abstract
Optimum design parameters of the tool for vibration deformation of bronze bushings: the punch angle β=9°; the height of the punch gauge part – 4-5 mm are obtained. For treatment of parts, the vibration amplitude of 1.0 mm, the machining allowance of 0.4 mm and the plastic deformation force of 217 N/m 2 should be used. The analysis of the microstructure improvement of the parts treated by vibration deformation is presented. Under deformation, more fine grains are formed and favorable conditions for dislocation generation are created, which promotes an increase in the radial deformation rate. The obtained process parameters of vibration deformation of bronze bushings allow reconditioning of worn-out surfaces. They can also be used for treatment of new parts, thus increasing the wear resistance of operating surfaces by 1.2 times. The research results can be useful in the development and improvement of the processes of reconditioning “bushing” type parts.
Highlights
Equipment performance is the ability to perform preset functions in the process of operation
The use of new technological processes in the manufacture and reconditioning of parts contributes to the reliability of agricultural machines and units
For determining the optimum angle of the treatment tool during normal and vibration deformation of bronze bushing specimens, the experimental research was conducted with the following angles β: 8°, 9°, 10°
Summary
Equipment performance is the ability to perform preset functions in the process of operation. It is estimated by comparing the actual values of parameters with the specifications. A large number of parts made of non-ferrous metals and alloys are used in agricultural machinery These materials have high antifriction properties and corrosion resistance. They withstand considerable specific loads and high speeds. The urgency of the work lies in a comprehensive study of vibration treatment of bushings of agricultural machinery. This requires determining the optimum values of process parameters
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