Study on the Working Fluid Conductivity Measuring Technology of MSWEDM

It analyzes measuring method of working fluid conductivity on the MSWEDM through the study of the working groove equivalent circuit model and the main factors affecting the conductivity measurement. It adopts ± 18V, 50Hz AC voltage to driving the measuring electrode in order to reduce the error caused by the electric spark machining the leakage current and polarization effect; the measurement system adopts with waterproof DJS-1CF (platinum black) conductance electrode in order to reduce the error caused by the capacitance effect. It study on the working fluid conductivity measuring technology that may help lay a foundation for it can real-time, on-line control research about the working fluid conductivity.