Технологическое обеспечение износостойкости поверхностного слоя деталей машин после обработки точением

Abstract

The article describes problem of friction unit surface layer parts wear resistance assurance based on control of geometrical and physic mechanical properties to be formed the machining. The researches of stored energy of deformation in the surface layer of the sample after turning are presented. Correlation wear rate with equilibrium parameters of roughness and degree of work hardening of the surface layer of machine parts based on thermodynamic approach is obtained. The analysis of the results of the calculated and experimental determination of the wear rate of the samples of steel 45 under the conditions of the equilibrium state of the surface layer is shown. The correlation stored energy of the surface layer of machined part with the parameters of the degree of work hardening and dislocation density is obtained. Equations for calculation of roughness parameter and degree of work hardening based on correlation with machining conditions are shown.