Work

Transient 3D Simulation of electrolyte flow in a removal device for the determination of process input parameters according to DIN SPEC 91399

Year: 2025

Type: article

Abstract: Pulsed Electrochemical Machining (PECM) is based on the principle of anodic metal dissolution with pulsed direct current. To ensure the charge transfer between the anode (workpiece) and the cathode (tool), an electrically conductive medium, the electrolyte, flows in the working gap between the two electrodes. The removal results of PECM are essentially influenced by the current density distribution in the working gap and by the material to be processed. For these reasons, removal experiments according to DIN SPEC 91399 are important to determine process input parameters for the process design. In this study, transient 3D simulations of electrolyte flow in a PECM removal device, which is suitable for experiments according to DIN SPEC 91399, are shown. The influence of the parameters pressure difference and working distance on the flow rate and the flow velocity field in the working gap are analysed to gain a deeper understanding of the determination process. Afterwards experimental results are discussed, which show a correlation between flushing marks on X90CrMoV18 samples and the flow velocity field from the simulations.

Source: Procedia CIRP

DOI: 10.1016/j.procir.2025.02.051

Authors: Nils Paucke, Alexander Thielecke, Richard Petermann, Gunnar Meichsner, Matthias Hackert-Oschätzchen

Institution: Otto-von-Guericke-Universität Magdeburg

Language: English

Topic: Advanced Machining and Optimization Techniques

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: Deutsche Forschungsgemeinschaft

Award: Bearbeitungsstation zum elektrochemischen Präzisionsabtragen