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Measurement equipment for investigation of the influence of viscosity of dielectric working fluids on spark erosion

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5 Author(s)
Schulze, H.P. ; Inst. for Fundamental Electr. Eng. & Electromagn. Compatibility, Otto-von-Guericke Univ. of Magdeburg, Germany ; Wollenberg, G. ; Lauter, M. ; Storr, M.
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In this paper, measurement equipment for investigation of electrical discharges in dielectric working fluids is presented. Special features of these discharges are determined through a small distance between electrodes of 5 to 150 μm and the ignition voltage up to 600 V. With the measuring system, a time-co-ordinated measurement of all electrical and optical processes of the discharging process can be accomplished. For using spark discharges is a machining process analyzing the influence of the viscosity of the work liquid on the ignition conditions is of great interest. Parameters measured at the plasma channel are starting parameters for a simulation of the thermal-affected zone of electrodes surfaces. The conditions for ignition and recovery strength of the work liquid are important characteristics for a machining process up to 4 million discharges per second.

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Dielectrics and Electrical Insulation, IEEE Transactions on  (Volume:10 ,  Issue: 6 )