Investigation of Non-aqueous Electrolyte Jet Electrochemical Micromilling Machining of TC4
Jet electrochemical micromilling offers distinct advantages in machining difficult-to-cut materials.However,a dense oxide film forms on the surface in the electrochemical machining of titanium alloys,which hinders the dissolution of metals.The use of aqueous electrolyte can improve the efficiency of oxide film removal,but it also lead to serious stray corrosion.In response to this phenomenon,a non-aqueous electrolyte was proposed for jet electrolytic micromilling of TC4 titanium alloy.The dissolution behavior of TC4 in NaCl aqueous solution and NaCl ethylene glycol solution was analyzed,and the influence of processing voltage and feed rate on the formation of micro grooves in jet electrolytic micromilling was investigated.Finally,the optimal process parameters were used for machining on the surface of TC4.The result showed that under the condition of processing voltage of 35 V and feed rate of 75 μm/s,S-shaped microstructures with geometric consistency and surface quality is fabricated through layer-by-layer milling using NaCl ethylene glycol solution,and the average groove width and depth are 1025.419 μm and 151.739 μm,respectively.
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