The field-induced jet discharge processing method induces the generation of microfine jets through a high-voltage electric field and etches the material through the discharge generated between the jet and the workpiece.Although this method avoids the problem of electrode wear,but the microscopic jet is susceptible to external interference,leading to a considerable dispersion and unpredictability of the discharge that is challenging to regulate precisely.The ion beam was constrained using a quadrupolar magnetic field application mechanism,which allowed the magnetic field to regulate the jet.This work investigated the impact of the magnetic field constraint on the width,depth,and surface roughness of the etch pits created by the field-induced jet discharge.The results indicated that the depth and surface roughness of the discharged pits decrease with the increase of the magnetic induction strength,the width of the pits increases in the horizontal direction and decreases in the vertical direction,and it was also found that the distance between the poles during the discharge decreases with the increase of the magnetic induction strength.The experiment confirmed that the field-induced jet discharge with magnetic field assistance is adapted to the machining of groove-type features.
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