The Effects of Burnishing and Conventional Finishing Processes on Surface Roughness and Roundness of the Al 6061 Aluminum Parts

Burnishing is used increasingly as a finishing operation which gives additional advantages such as increased hardness and optimum surface roughness and becoming more popular in satisfying the increasing demands of machine component performance. It is very difficult getting rounded surfaces which are desired where hole machining process (turning, honing, reaming and burnishing). In this study, surface characterizations of getting surface with burnishing and other machining process was evaluated. Especially, inner surface of hole was examined and machining process compared. In the present work, Al 6061 aluminum alloy is selected as work piece material. The experimental results showed that burnishing process must be used where roundness is important. In addition, advantage of burnishing process for Al 6061 aluminum alloy material come out when comparing hardness of hole surface.