The Research On Micro-ECM Of High Temperature GH4169

With the continuous development of modern science and technology,miniaturization and high precision of mechanical parts are tendency,at the same time, requirements of material hardness are high. Compared with traditional processing methods, micro-ECM removes material by ions and has advantages of cathode non-loss, no processing stress and deformation in machining, good surface quality, high efficiency regardless of the hardness of parts. Therefore, micro-ECM technology can satisfy the processing requirements of small mechanical parts. Therefore, micro-ECM plays an indispensable role in small parts processing.This paper regarded high-temperature alloy GH4169 as research background,and the capacitance model was built to simulate Micro-ECM machining process of high temperature alloy based on electrode process kinetics theory. The MATLAB software was applied to simulate the model, and to analyze the influence of machining voltage, duty ratio and pulse frequency on the balance of the gap. In the electrolysis process, cathode gas will produce pressure waves because of its radial motion and then affect the electrolysis process. Pressure wave model was built to simulate the process of pressure wave based on fluid dynamics theory and explosion pressure wave theory. The results of pressure wave influenced by voltage, duty circle, pulse frequency was obtained by analyzing pressure wave model with MATLAB. Experiments of high-temperature alloys GH4169 showed that micro-ECM could be conducted by capacitance model.Micro-ECM is an efficient, high-precision machining technology and will play an important role in small parts processing areas in the future. Finally, a conclusion was made in this paper and the future prospect was put forward.