Abstract: Comparative experiments were conducted on the electric discharge wire cutting machining of cylinder type parts through conventional and layered liquid supply.Research found that the processing of electrode wire in the forward direction through layered liquid supply can be achieved in the entire process of spark discharge,the problem of insufficient internal liquid supply inside cylinder type parts by reverse electrode wire transport was solved,the interpolar working fluid flow rate and flow rate were increased,the chip removal capacity was enhanced,the discharge gap was enlarged and the interpolar discharge conditions was improved.The processing of electrode wire in the forward direction raised the spark discharge efficiency and stability and play an important role in the improvement of workpiece cutting speed and surface processing quality.

Key words: layered liquid supply, Wire Electrical Discharge Machining (WEDM), cut speed, surface quality