EFFECT OF BURNISHING ON MACHINED SURFACES

Abstract

Research Engineers and manufacturers are paying more attention to the plastic deformation of machined canponents and parts of metallic structure,, because of Its utility in field of engineering, The burnishing of metal is a method of producing anooth surfaces by plastically moving away the raised micro- irregula.► rities on the surface and pressing it in to the microcavity, This produces a new -surface with high degree of finish* the facts already reported are mainly on the burnishing employing a diamond dlemond tool * The tool manufactured for burnishing purpose is similar to that which was dasigted end developed by Pestwnov 4 Kotl yarov at kirovograd Agriculture - igineering Institute, MOSCOW. A concept of statistical design for collecting the data at two and three levels is also introduced. Equations for surface roughness and hardness# a also de*ived in tens of bail die,, feed* no, of passes. speed and Baron„ ,Since with the help of burnishing# hardening of surface of metal is achieved the Instrumentss already used for measuring hardness can not be used because of the penetration of £ndentot to the ductile region. Keeping this inview,scelerosoope { Hardness measuring instrument) is used to measure surface hardness..