Electric Field Simulation and Experiment of Electrochemical Jet Machining
ZHANG Chengguang1,2, ZHANG Yong2, ZHANG Feihu2
1 College of Mechanical and Electrical Engineering, Zhoukou Normal University, Zhoukou 466000; 2 School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001
Abstract: The removal model of electrochemical jet machining (ECJM) and three dimensional model of electric field simulation were established based on the electrolyte jet flow field. The electric field of ECJM was simulated by ANSYS, obtaining distribution of electric field on the surface of the anode workpiece. It also suggests that voltage and jet distance have a great influence on velocity of ECJM, jet angle, nozzle diameter and jet pressure have little influence on velocity of ECJM. The electrolyte concentration (conductivity) has no effect on electric field intensity of ECJM. However, the electrolyte concentration (conductivity) has a great influence on current density of ECJM, the electrolyte concentration has a great influence on speed of ECJM. The material removal rate experiments of ECJM were carried under different electrochemical jet process parameters. The experimental results show that the voltage and electrolyte concentration and jet distance have a great influence on material removal rate of ECJM. It is consistent with the electric field simulation. Finally, the experiments of surface morphology were carried with SKD11 steel dies. The experimental results show that the workpiece surface of ECJM exist “micro cracks” with NaCl solution as electrolyte, the workpiece surface of ECJM has no “micro cracks” with NaNO3 solution as electrolyte. The Cr precipitate on the workpiece surface in the process of ECJM, the thickness of oxide film is uneven at machining region of workpiece surface.
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2017, Vol. 31 
