Fundamental investigations on powder kinematics during magnetabrasive polishing of para- and diamagnetic materials

• Applicants: Professor Dr.-Ing. Dirk Biermann; Dr.-Ing. Florian Welzel
• Subject Area: Metal-Cutting and Abrasive Manufacturing Engineering
• Term: since 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 531785754

Magnetic abrasive finishing (MAF) offers great potential for surface fine machining on CNC machine tools, which can also be used to perform previous machining operations such as milling. This combined use enables the shortening of process chains, the avoidance of reclamping errors and a higher degree of automation of surface fine machining processes. Within the scope of the proposed research project, it is planned to investigate fundamental mechanisms of action in analogy tests for ferromagnetic materials (magnetic permeability µ >> 1) and then to systematize the findings obtained in empirical models. With the aim of being able to use the MAF for para- (µ > 1) and diamagnetic materials (µ < 1), the modular tool concept developed is to be adapted for the new application in the main part of the project. As key technological aspects, the distribution of the magnetic fields as well as the optimization of the powder kinematic with the aim of a mechanical powder compaction through structured functional surfaces on the MAF-tool are planned. The aluminum alloy EN AW-6082, which is e.g. used in the tool and die industry, is selected as an exemplary workpiece material.

• DFG Programme: Research Grants