|제목(국문)||방전액의 전도율이 와이어방전가공성에 미치는 영향|
|제목(영문)||Influence of Electrical Conductivity of Dielectric on Machinability of W-EDM|
허관도 (Kwan-Do Hur ,동의대학교 ) ▷공저자 네트워크 보기
권택환 (Taek-Hwan Kwon ,부산대학교 ) ▷공저자네트워크등록하기
|초록||This work deals with the electrical conductivity of dielectric and cobalt percentage on outputparameters such as metal removal rate and surface roughness value of sintered carbides cut by wire-electrical discharge machining (W-EDM). To obtain a precise workpiece with good quality, somc
extra repetitive finish cuts along the rough cutting contour are necessary. Experimental results show that increases of cobalt amount in carbides affects the metal removal rate and worsens the surface quality as a greater quantity of solidified metal deposits on the eroded surface. Lower electrical conductivity of the dielectric results in a higher metal removal rate as the gap between wire electrode and workpiece reduced. Especially, the surface characteristics of rough-cut workpiece and wire electrode were analyzed too. To obtain a good surface equality without cracks, 4 finish-cuts were necessary by reducing the electrical energy and the offset value.
|keyword||wire electrode(와이어전극), electrical conductivity(전기전도율), dielectric(방전액), metal removal rate(방전가공속도), sintered carbide(초경합금)|
|저널명||대한기계학회 춘계학술대회 ▷관련저널보기|