STUDY OF DIAMOND SMOOTHING PROCESSES DURING SURFACE PLASTIC DEFORMATION OF COATED PARTS

Abstract

The article is devoted to the study of diamond ironing as a modern and highly effective method of surface plastic deformation, used to improve the quality and operational properties of machine building parts. The main physical mechanisms of the process are considered: strengthening of surface layers, the formation of residual compression stresses, a decrease in roughness parameters and an increase in wear resistance. Particular attention is paid to the processing of parts with wear-resistant coatings, such as titanium nitride (TiN), which is especially important for tool and machine-building production. The paper presents analytical relationships that allow to determine the optimal process modes, including the compression force and the depth of the strengthened layer. Thermal stress analysis was carried out, the influence of temperature factors on the stability of diamond tools and the preservation of coating properties was shown. Critical temperatures have been established, exceeding which leads to a decrease in processing efficiency. Thus, diamond ironing is a universal and technologically accessible method of hardening and finishing, however, the effectiveness of its application is determined by the optimization of processing modes, taking into account the thermal limitations and design features of the system. The obtained results can be used in the development of technological processes to increase the reliability and durability of mechanical engineering parts and tool production.