An analysis of the friction burnishing operation

To reduce the irregularities of machined surface, burnishing is used as a finishing process by the plastic deformation. This process does not only improve surface finish but also generates compressive residual stresses throughout the surface. In this investigation work mechanical (friction) burnishing process will be presented. First a rig has been redesigned and improved and tested for mechanical burnishing operations. Then the experimental setup and tests will be presented. After that a detailed discussion about the reasons for fluctuations of normal load, friction force and coefficient of friction will be presented. The surfaces conditions, roughness and hardness also will be discussed. The parameters that affect the friction burnishing and their sequence are concluded. Finally a conclusion about this thesis and future directions for this work will also be presented. In the end it will then show that friction burnishing is a process worth considering in improving the surface quality