Study on Electrochemical Removal of Micro Pore Hairs Based on COMSOL
The burrs generated during micro drilling of small holes affect the surface quality of the work-piece.Moreover,it is difficult to remove micro pores and burrs.Therefore,an electrochemical deburring simula-tion model is established to analyze the current density variation during the deburring process and its correspond-ing relationship with the material removal rate,and to explore the mechanism of pore chamfering.The results in-dicate that the current density on the surface of the burrs characterizes the strength of electrochemical material re-moval ability.The current density at the tip of the burrs is high,and the machining speed is fast.As the machi-ning progresses,the burrs gradually become smoother,and the current density begins to disperse.The machi-ning speed at the tip of the burrs gradually slows down.In addition,increasing the cathode diameter will in-crease the processing speed,but it will also lead to an increase in chamfer;increasing the electrode height helps to reduce chamfers,but the processing time also becomes longer.When U =4V,C =12%,d =400μm.Z = 150μm,the machining effect is good at m,and the chamfer depth of the hole obtained after deburring is 21μm.
electrochemistrydeburringcurrent densitychamfer of orifice