To this day, determination of the process parameters for production of components with the required surface integrity is only possible by a trial and error approach. Addressing this problem, at WZL a model for predicting and adjusting the rim zone properties of eroded components is developed. Using this model, the suitable process parameters for production of components with adjusted rim zone properties can be determined in advance. Thereby, the EDM process can be applied more flexible and adaptive to the requirements in the manufacturing industry.
The applied energy during the EDM process acts as thermal loadings. These loadings leads to different modifications in the workpiece. The process signature describes the physical interaction between the thermal loadings and the induced material modifications. Knowing this interaction, the modifications in the material can be predicted as a function of the induced temperatures and temperature gradients. To determine the process signature, at the first step, the applied temperature field on the workpiece will be determined by heat transfer simulations. Further, the modifications in the material, such as phase transformation and grain growth under this thermal condition will be identified by experiments. For modeling these modifications, the responsible mechanisms and the governing equations during material evolutions will be identified.
• Simulation of heat transfer during EDM process
• Investigation on the metallurgical changes of the workpiece using simulation and experimental approaches
• Determination of the suitable process parameters for production of components with the required surface integrity and properties
• In-situ temperature measurements using thermography camera
Haben Sie Fragen zu diesem Projekt?
Tim Herrig, M.Sc. RWTH Workgroup Leader
Cluster Produktionstechnik 3A 234
Tel.: +49 241 80-28008
Fax: +49 241 80-22293