Mechanics of Micro-cutting Using FANT

The analysis of the antifriction material brass L63 surface layer formation mechanics during finishing antifriction non-abrasive treatment (FANT) at the stage of micro-cutting was performed experimentally by the method of microhardness measurement and computer simulation using the finite element method (FEM). The analysis of the micro-cutting processes simulation results during FANT using the FEM allowed us to identify the main technologically important patterns. It was found that large tensile stresses arise behind the contact surface in the surface layer of the brass tool, which leads to the formation of surface microcracks to facilitate micro-cutting during subsequent passages of the FANT. On the back surface of the contact zone, there are extreme contact pressures for brass, which create the conditions for the formation of an adhesive durable brass antifriction layer. The thickness of the deformation-hardened surface layer is very small and does not significantly affect subsequent technological transitions during coating.