Simulation of the Circulating Motion of the Working Medium and Metal Removal during Multi-Energy Processing under the Action of Vibration and Centrifugal Forces

Abstract

The rotational motion of the medium granules under the influence of an impeller installed in the bottom of a cylindrical reservoir is considered. The dependencies of the circulation velocity of the abrasive granules, as well as the dependence of the pressure in the circulation flow of the granules on the radius of the vibrating machine cylindrical reservoir for different speeds of the impeller rotation are obtained. Furthermore, the velocities of the abrasive granules at various distances from the center of the cylindrical reservoir of the vibrating machine have been determined. The amplitudes of the tangential and radial components of the velocity of movement of pseudo-gas from abrasive granules are obtained. The total pressure on the surface of the processed part and the average velocity of the abrasive granules colliding with it are determined. The graphical dependencies of the integral metal removal on the amplitude and frequency of oscillations of the walls of the vibrating machine reservoir are given for various values of the angular velocities of the impeller rotation.

Mathematical Model of Vibration-Centrifugal Processing of Parts Using Loose Abrasive

“…The residual compressive stresses in the hardened layer after vibration-centrifugal hardening for optimal parameters reach maximum values: circular stresses up to σmaxcir = 1600 MPa and radial stresses up to σr = 290 MPa. Their correlation with surface microhardness is shown [17,18]. In article [19], a method of vibratory centrifugal strengthening was developed to ensure the reliability parameters of "bushing" type parts.…”