Investigation of a Superimposed Oscillation Compression Process for the Production of a Bulk Component

In the scope of project A7 of the collaborative research center TCRC73 investigations of superimposed oscillation forming have been conducted. Positive effects regarding the reduction of plastic work, surface quality and mold filling in an ironing process could be demonstrated. Basic investigations also showed these effects for a compression process. By means of this research, the findings are transferred to the production of a functional component with an external gearing. For this purpose, a hydraulically working oscillating device is installed in an existing tool system in order to produce a demonstrator component. Forming experiments with and without superimposed oscillation are conducted. The components are examined concerning the plastic work required for forming as well as metallographic properties and surface quality. For this purpose, micrographs of the structure are taken and the flow lines and grain structure are analyzed. Hardness measurements are conducted and conclusions about the influence of superimposed oscillation on forming behavior are drawn.