Research on the Restoration of Gear Pump Parts by Plastic Deformation

Restoration of worn parts of agricultural machinery allows to significantly reduce the downtime of machines, as well as to improve the quality of repairs and positively affect the durability of machines. Currently, there is a need for research into the use of technologies based on plastic deformation in the repair of specific parts. Gear pumps are an important component of hydraulic systems of machines. Not only the efficiency of the unit, but also the quality of control and adjustments depends on the operation of the pumps. Currently, the analysis of the possibility of using plastic deformation in the restoration of worn bushings of gear pumps of hydraulic systems of autotractor equipment is relevant. To this end, the dependence of the change in the volume of the bushing on the change in its geometric parameters during restoration by plastic deformation (deposition) was investigated. Currently, the analysis of the possibility of using plastic deformation in the restoration of worn bushings of gear pumps of hydraulic systems of autotractor equipment is relevant. To this end, the dependence of the change in the volume of the bushing on the change in its geometric parameters during restoration by plastic deformation (deposition) was investigated. The results of a technical and analytical review of the design and functional characteristics of gear pumps as elements of hydraulic systems are presented. The patterns of bushing wear are analyzed based on micrometric studies. A method of geometric modeling of bushings has been developed and their volumetric parameters have been calculated. The dependence of the bushing volume on the amount of bushing wear in height and in the inner diameter has been investigated. The dependence of the change in the bushing volume on the change in its dimensions has been established. An analytical model of the dependence of the bushing volume on the main geometric parameters has been constructed. The feasibility of using the deposition method as an effective engineering solution for the restoration of specific parts, namely, bushings of gear pumps of hydraulic systems of auto-tractor equipment, has been substantiated.