Comprehensive provision of quality parameters of the surface layer of parts by an innovative method of combined finishing and hardening treatment

Abstract

The quality of the surface layer significantly affects the reliability and durability of modern machine-built products. Therefore, it is necessary to use processing methods that improve the microgeometry of the part surface and positively impact the structure, physical and mechanical properties, and stress state of the surface layer. The article investigates a combined method of surface plastic deformation, combining rigid and elastic smoothing and allowing to comprehensively ensure the quality parameters of the surface layer of parts. The possibilities of using a combined tool for rigid-elastic smoothing and a system for automatically providing a given tension during smoothing are considered. The use of an automatic system to ensure a given tension during smoothing allows you to adjust the power parameters of the process with high accuracy. The practical significance of the work is that as a result of rigid elastic smoothing, a microstructure with a homogeneous dense hardened layer is formed in the surface layer, forming a regular surface roughness profile of a favorable blunted shape, and providing increased wear resistance of the surface layer of the part and its correct geometric shape.

The research in this article is aimed at solving these problematic issues and is carried out within the framework of the AP19680395 project "Study of the stress-strain state of deposited parts and development of a method for reducing their deformations in the processes of surface plastic deformation", under grant funding from the Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan.