Prediction of the edge rounding of additively manufactured workpieces made of Ti6Al4V during centrifugal disc finishing

Centrifugal disc finishing is an effective post-processing operation for the roughness reduction of additively manufactured workpieces. However, the process leads to an edge rounding, which might result in shape deviations - especially if the workpiece is manufactured near net-shaped. In this study, a model based on the discrete element method is used to predict the edge radius of workpieces machined by centrifugal disc finishing. As shown, the model can be applied to redesign the workpiece with local stock allowance in order to reduce shape deviations resulting from centrifugal disc finishing.