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최세환(Se Hwan Choi),김보현(Bo Hyun Kim),정도관(Do Kwan Chung),신홍식(Hong Shik Shin),주종남(Chong Nam Chu) 한국생산제조학회 2006 한국생산제조시스템학회 학술발표대회 논문집 Vol.2006 No.5
Micro machining of tungsten carbide by electrochemical machining(ECM) was studied. In ECM, machining conditions and electrolyte should be chosen carefully according to the property of workpiece materials. In this paper, sulfuricacid and nitric acid were used for tungsten carbide machining and machining characteristics were investigated according to machining conditions such as electrolyte, workpiece potential and applied pulse voltage. By using mixture of sulfuric acid and nitric acid, micro structures with sharp edge and good surface quality were obtained. Micro electrochemical turning was also introduced to fabricate micro shafts.
최세환(Se Hwan Choi),김보현(Bo Hyun Kim),정도관(Do Kwan Chung),신홍식(Hong Shik Shin),주종남(Chong Nam Chu) 한국생산제조학회 2006 한국공작기계학회 춘계학술대회논문집 Vol.2006 No.-
Micro machining of tungsten carbide by electrochemical machining(ECM) was studied. In ECM, machining conditions and electrolyte should be chosen carefully according to the property of workpiece materials. In this paper, sulfuricacid and nitric acid were used for tungsten carbide machining and machining characteristics were investigated according to machining conditions such as electrolyte, workpiece potential and applied pulse voltage. By using mixture of sulfuric acid and nitric acid, micro structures with sharp edge and good surface quality were obtained. Micro electrochemical turning was also introduced to fabricate micro shafts.
안세현(Se Hyun Ahn),최세환(Se Hwan Choi),류시형(Shi Hyoung Ryu),최덕기(Deok Ki Choi),주종남(Chong Nam Chu) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.4
The possibility of micro/nano machining through electro-chemical process is discussed in this research.<br/> Electro-chemical dissolution region is localized within 1 μm by applying ultra short pulses with tens of<br/> nanosecond duration. The effects of voltage, pulse duration, and pulse frequency on the localization distance<br/> are investigated. Localization distance can be manipulated by controlling the voltage and pulse duration, and<br/> various hole shapes are produced including stepped holes and taper free hole. High quality micro-hole with 8<br/> μm diameter with 20 μm depth and micro-groove with 9 μm width with 10 μm depth are machined on 304<br/> stainless steel.