Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Fabrication of Tungsten Carbide Microshaft Using Electrochemical Machining

전해 가공을 이용한 텅스텐 카바이드 미세축 제작

  • 강명주 (LG전자 냉장고연구실) ;
  • 오영탁 (서울대 정밀기계설계공동연구소) ;
  • 주종남 (서울대 기계항공공학부)
  • Published : 2002.03.01
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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

References

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