Abstract
This study aims to enhance the technological capabilities of additive manufacturing and to assess their applicability in the repair and maintenance sector of the agro-industrial complex of Kazakhstan. The research investigates the feasibility of fabricating hydraulic machine components, particularly gear pump (GP) parts, using additive methods. The approach integrates concepts of additive manufacturing, materials science, mechanical engineering, design and strength assessment, and computer simulation. An experimental case study was conducted on a GP shaft-gear, produced via the FDM method on a Raise3D Pro Plus 3D printer. Finite element analysis in SolidWorks demonstrated that the printed shaft-gear withstands operational loads, with maximum stress of 18.45 MPa, remaining within acceptable limits for polymer-based 3D printing materials. Stress calculations for PLA specimens further confirmed that both stresses and deformations are below critical thresholds, ensuring operational reliability. The novelty of this work lies in validating the structural integrity of functional pump components produced by additive manufacturing, which has been insufficiently studied in repair applications. The results provide a scientific basis for expanding the use of additive technologies in hydraulic machinery and highlight their potential to improve efficiency and cost-effectiveness in industrial repair processes.