Research of electrical discharge and electrochemical combined machining technology

With the progress of science and technology, the manufacturing industry has ushered in rapid development. The emergence of more difficult-to-machine new materials and alloys has made their corresponding high-quality processing methods a research hotspot in the field of advanced manufacturing. The combined machining of EDM and electrolysis solves the problems caused by EDM and can realize high-quality and high-precision machining with low surface roughness and no recast layer.However, the current summary of EDM-ECM processing technology is not comprehensive enough. In the combined machining of EDM and electrolysis, developing the working platform and improving the working fluid are the keys to realising the combined machining. At the same time, understanding machining mechanism and switching the machining mode is also the key to improving the machining effect. This paper first introduces the improvement of working equipment and the research status of working fluid in EDM-ECM. Secondly, it introduces the application field of EDM-ECM technology. Finally, it discusses the possible future research directions of combined machining and provides research ideas for subsequent researchers.