Experimental Analysis of Effect of Roller Burnishing Tool on Surface Integrity Enhancement of Aluminium Alloy 7075

Abstract

Roller burnishing tool is used for the experimental work of the present study on specially fabricated Aluminium 7075. In roller burnishing, a hard roller is pressed against a rotating cylindrical work piece and parallel to the axis of the work piece. Burnishing is essentially a cold forming process, in which the metal near a machined surface is displaced from protrusions to fill the depressions. The results show significant improvement in the surface roughness and surface hardness of aluminium alloy 7075 were achieved by the application of the roller burnishing process. In the present work, various experiments are conducted to investigate the effect of burnishing force and number of passes on the surface hardness and surface roughness of the aluminium alloy 7075