Experimental investigation of the effects of the coolant on the performance parameters of electrical discharge drilling of some aerospace materials [Havacilik ve uzay malzemelerinde soǧutma sivisinin elektro erozyonla delinen deliklerin performans parametrelerine etkisinin deneysel incelenmesi]

In this study,electrical discharge drilling (edd) processes is applied to aerospace materials of ti6al4v and inconel 718 by using single channel brass electrode and different coolant types (tap water,distilled-water and kerosene). in the study the electro erosion parameters kept constant according to the pre-experiments' data for titanium and nickel alloys and the effect of the coolant types on the performance parameters such as material removal rate,electrode wear rate,surface roughness value,white layer thickness,overcut in diameter and taper at the tip was examined. electro discharge drilling performance was effected by the coolant types for aerospace materials. it is concluded that the usage of the distilled-water for ti6al4v alloy and the tap water and kerosene for inconel 718 alloy gave the better results for all performance parameters.