Electrochemical Machining of Micro Hole under Magnetic Field Assistance

This study investigated the characteristics of a microtool used in electrochemical microdrilling under conditions with and without magnetic field assistance. The experimental results indicated that charged ions and the direction of bubble movement were affected by the Lorentz force under the condition with magnetic field assistance, forming a vortex to promote electrolyte renewal. Reaction products and heat generated by the machining process were effectively discharged. The zone affected by stray current corrosion and microhole expansion were also reduced.