Research On Application Technology Of GH4169 High Efficiency And High Quality Short Arc Electrochemical Combined Machining

The GH4169 material shows great potential for application in high-end manufacturing fields such as aerospace,shipbuilding,and national defense equipment due to its high strength,hardness,and good fatigue performance.However,traditional machining methods face challenges such as tool wear,low processing efficiency,and deformation due to the material’s high hardness and low thermal conductivity.To overcome these limitations and achieve efficient and high-quality surface processing of GH4169 high-temperature alloy material,this paper proposes a method of short arc electrolytic combination machining.This article focuses on the dielectric breakdown characteristics between short arc electrodes using GH4169 as the research object.The study includes simulation research on fluid structure coupling between short arc electrodes and explores the efficient short arc machining experimental process.The response surface method was used to optimize the multi-objective parameters of the experimental data.The research also includes experimental research on the removal of remelted layers on the surface of GH4169 during electrochemical machining,achieving efficient and highquality processing of high-temperature alloys.In this study,we analyzed the breakdown characteristics of short arc interpolar media and studied the discharge initiation process of short arc machining in liquid media.We also investigated the influence of liquid medium conductivity on the discharge initiation process and optimized the working medium for efficient short arc machining of high-temperature alloy GH4169 through single factor experiments.A simulation model was developed to study the interaction between electrode fluid and eroded particles during short arc electrode processing at various depths and inlet medium pressures.The model also analyzed the distribution pattern of eroded particles.This provides a theoretical foundation for future process experiments.This study investigates the process law of GH4169 short arc efficient machining experiment and examines the impact of voltage,tool electrode diameter,and tool electrode speed on material removal rate and relative electrode loss rate through single factor experiments.The Box Behnken response surface test method is used to analyze the interaction between these factors,using material removal rate and relative electrode loss rate as indicators.The study completes the multiobjective parameter optimization of the short arc machining GH4169 process experiment,achieving efficient short arc machining of GH4169.This study analyzed the surface remelted layer after short arc machining and investigated the dissolution characteristics of GH4169 remelted layer through single factor experiments of electrochemical machining.The study also analyzed the optimal parameters for electrolytic high surface quality machining of GH4169 remelted layer.By selecting the optimal parameters for both short arc machining and electrochemical machining,the material removal rate can reach25620m3/min and the surface roughness can reach Ra0.797 μm.This study successfully achieved efficient and high-quality processing of high-temperature alloy GH4169.