알루미늄합금의 와이어 컷 방전기공 특성에 과한 연구 = A Study of Characteristics of the Wire-cut EDM Process in Aluminum Alloys

다국어 초록 (Multilingual Abstract)

This study deals with the characteristics of wire-cut EDM(Electrical Discharge Machining)process in aluminum alloys. Besides 2 series and 7 series of aluminum alloys for aerospace applications, porous aluminum is tested, which is used for sound absorbing material and interior and exterior material of building. Jinyoung JW-30 wire cutting machine was used in this experiment. Tap water passed a filter and ionization was used as the discharging solution. An immersion method was applied as a cooling method because it separates chips effectively and machinability is good even with low value of electric current. The speed of fabrication was estimated by measuring the travel distance of the work piece and time spent for the movement.
As pulse-on-time increased the fabrication speed decreased. On the other hand, as peak voltage or peak current increased the fabrication speed increased. In general 7075 aluminum alloy resulted in higher fabrication speed.