Mathematical Model of Thermal Physics of the Dual-Cycle Cooling System of the Tool for Pieces Nanostructuring Burnishing

Abstract

The article considers the problems of the mathematical modeling of thermal physics of the tool for nanostructuring burnishing. Physical and equivalent heat diagram of the system are developed. On the basis of the equivalent heat transfer diagram, the equivalent circuit and the system of equations of the mathematical model are created. The dependence of the tool indenter tip temperature on cooling system thermal parameters is obtained. The comparison of efficiency of heat removal from the tool indenter when using the developed two-circuit cooling system and the system supplying lubricant cooling liquid through the lathe centre spindle, as well as when applying nanostructuring burnishing without cooling is carried out.

Impact of Indentor Sliding Velocity and Loading Repetition Factor on Shear Strain and Structure Dispersion in Nanostructuring Burnishing

“…A number of authors [1][2][3][4][5][6][7] have studied finishing and hardening burnishing without taking into consideration the possibility of forming nanocrystalline structures. To promote burnishing the papers [8][9][10][11][12][13][14][15][16] bring into the foreground a finishing technique for forming a nanocrystalline structure in the surface layer, which puts to use the method of severe plastic shear deformation (SPD), named nanostructuring burnishing (NSB). The NSB technique makes it possible to impart unique performance attributes to the surface layer, and it can be implemented in the process of machining on modern lathes and machining centers.…”