A5016678699- Advanced Machining and Optimization Techniques
- Advanced machining processes and optimization
- Advanced Surface Polishing Techniques
- Corrosion Behavior and Inhibition
- Erosion and Abrasive Machining
- Metal Alloys Wear and Properties
- Electrodeposition and Electroless Coatings
- Diamond and Carbon-based Materials Research
- Laser Material Processing Techniques
- Force Microscopy Techniques and Applications
- Characterization and Applications of Magnetic Nanoparticles
- Metallurgy and Material Forming
- Metal Forming Simulation Techniques
- Non-Destructive Testing Techniques
- Advanced materials and composites
- Metal and Thin Film Mechanics
Chemnitz University of Technology
2017-2024
Electrochemical machining (ECM) is an unconventional manufacturing method based on the anodic dissolution of metal workpiece material. A superimposed magnetic field causes additional body forces within working gap influencing electrolyte convection and consequently afecting electrochemical kinetics gas transport. In this study, a multiphysics simulation model was built to analyze interactions between characteristics, convective heat- charge-transport in shaping. Therefore, Lorentz force...
Although widely studied over the few decades, there are conflicting theories on discharge mechanisms of powder mixed electrical machining (PMEDM). Additionally, dielectric flow plays a vital role in distribution particles gap, which significantly affects deposition to modified surface. In this paper, literature PMEDM surface modification is thoroughly reported. The and effects main conditions, such as parameters improving mechanical antibacterial properties well biocompatibility surface,...
The pulsed electrochemical machining (PECM) with oscillating cathode is a manufacturing technology which used for shaping and surface structuring of different workpieces, e.g. impact extrusion punches. principle behind the ECM-process controlled anodic dissolution workpiece material without any thermal or mechanical independent from hardness. In this study, new multi-scale approach modelling PECM was created integrating short long time scale physical phenomena. simulation step (t < 0.02 s)...
Abstract Pulsed electrochemical machining offers great potential to meet growing demands on components like miniaturization, efficiency, and functionalization. Current research activities show that the process can be influenced by a superimposed magnetic field. While effects of most parameters such as pulse regimes, flow conditions, cathode material selection are well understood, influence fields is still difficult estimate for targeted design. Obtaining better understanding field–assisted...
Kurzfassung Elektrochemisches Abtragen weist ein großes Potential auf, den steigenden Bauteilanforderungen hinsichtlich Komplexität und Effizienz damit verbundenen Herausforderungen an die genutzten Fertigungsverfahren gerecht zu werden. Aktuelle Forschungsarbeiten zeigen, dass Überlagerung der Bearbeitungszone mit einem Magnetfeld einen positiven Einfluss auf Abtragprozess haben kann so bestehende Verfahrensgrenzen erweitert werden können. Um tieferes Verständnis über zugrundeliegenden...
Shape-memory alloys set high demands on the production technologies being used. During cutting, continuous heat input and mechanical stress have an undesirable influence shape-memory effect. Pulsed electrochemical machining (PECM), which is based anodic dissolution, enables force-free without thermomechanical edge-zone properties of workpiece. Depending desired geometry, development a customized PECM fixture necessary. The design fixtures often experiences designers manufacturers, results in...
In this study a multiphysics simulation model of the pulsed electrochemical machining (PECM) with oscillating cathode is shown. The focus on implementation machine tool-specific control characteristics in combination physical phenomena and material removal. As result, tool leads to an increase accuracy model. results are compared previous simulations experimental investigations.
Metalworking operations rely on the successful application of metalworking fluids (MWFs) for effective and efficient operation. Processes such as grinding or drilling often require use MWFs cooling, lubrication, chip removal. Electrochemical machining processes electrolyte flow to operate. However, in those operations, a fundamental understanding mode action MWF is lacking due unknown dynamics its interaction with material removal during process. Important information behaviour can be...
Pulsed electrochemical machining (PECM) with oscillating cathode is a non-conventional manufacturing technology to machine complex precision geometries independent from the mechanical properties of workpiece material. PECM an advanced development conventional ECM by applying pulsed electric current in conjunction movement cathode. Result more stable process combined better accuracy and quality. This work focuses on analysis resulting side working gap external PECM. Therefore, height ring was...
Bolt connections are the most prevalent technical solution to join several devices. To meet high requirements on lightweight constructions and safety-relevant technologies bolt require additional security elements or surface modifications increase static friction without damaging workpiece significantly. One possible is micro structuring of connection element within conventional forming process chain. For manufacturing structured a tool needed. Therefore, has feature negative geometry...