Simulation Analysis of Flow Field in Electrochemical Machining of Special-Shaped Holes
Aiming at the difficult problem of electrolytic machining of petal-shaped holes in aero-engine components,the paper presents a three-dimensional model of an special-shaped hole workpiece and extracts the flow channel model,for which flow field simulation and optimization are carried out.Based on the electric field simulation calculation and the current density distribution,the dissolution difference of the anode-shaped surface of the workpiece is predicted,and then the cathode molding boundary is corrected.Based on the analysis of flow field and electric field,the number,size and layout of the liquid-through holes,as well as the cathode profile curve,are optimized to complete the design of the cathode structure.The simulation results show that when the electrolyte inlet pressure and outlet pressure are set to be 0.6 MPa and 0.1 MPa,respectively,the electrolyte flow rate and pressure on the surface of the workpiece and the current density of the workpiece boundary in the processing area exhibit good uniformity.
electrolytic machiningflow field simulationspecial-shaped holecurrent density distribution
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