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Fabrication of Tungsten Carbide Microshaft Using Electrochemical Machining  

Kang, Myung-Ju (LG Electronics)
Oh, Young-Tak (Institude of Advanced Machinery and Design, Seoul National University)
Chu, chong-Nam (Dept.of Mechanical Aerospace Engineering, Seoul National University)
Publication Information
Journal of the Korean Society for Precision Engineering / v.19, no.3, 2002 , pp. 80-87 More about this Journal
Abstract
Tungsten carbide microshaft is used as micro-punch, electrode of MEDM (micro-electro-discharge machining), and micro-tool because it has high hardness and high rigidity. In this study, the tungsten carbide microshaft was fabricated using electrochemical machining. Concentration of material removal at the sharp edge and metal corrosion layer affect the shape of the microshaft. Control of microshaft shape was possib1e through conditioning the machining voltage and electrolyte concentration. By applying periodic voltage, material removal rate increased and surface roughness improved. The fabricated microshaft in $H_2 SO_4$ electrolyte maintained sharper end edge and better surface finish than those fabricated by other electrolytes.
Keywords
Electrochemical machining; Electrolyte concentration; Periodic voltage; Tungsten carbide microshaft;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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