INFLUENCE OF CORROSIVE WEAR ON STRENGTH CHARACTERISTICS OF DETAILS GAS TURBINE ENGINE

The rationale for the problem of the influence of corrosive wear during operation of a product on its strength characteristics, in particular on the stress concentration coefficient in the surface layer of the part material, is presented. A dependence is given for the calculation of the change in the value of the stress concentration coefficient in connection with changes in the surface roughness and the degree of hardening of the material of the surface layer of the part during operation, taking into account the technological conditions of surface treatment (cutting mode during blade processing, geometric parameters of the cutting tool, as well as the properties of the processed and tool materials). The results of calculating the values of the stress concentration coefficient and their discussion are presented.