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논문 기본 정보

자료유형
학술저널
저자정보
김재연 (숭실대학교) 이지효 (숭실대학교) 김보현 (숭실대학교)
저널정보
Korean Society for Precision Engineering Journal of the Korean Society for Precision Engineering Journal of the Korean Society for Precision Engineering Vol.42 No.4
발행연도
2025.4
수록면
325 - 332 (8page)
DOI
10.7736/JKSPE.025.006

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초록· 키워드

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Glassy carbon (GC) has superior properties such as high corrosion resistance, heat resistance, and low adhesion to glass materials in a glass molding process (GMP). In addition, the demand for GC molds is increasing in various industries that require high precision of glass parts. However, GC is a difficult-to-machine material with high hardness and brittleness. Electrical discharge machining (EDM) can machine GC regardless of its strength or hardness. In this study, tungsten carbide (WC-Co) electrode was fabricated by wire electrical discharge grinding (WEDG). Characteristics of EDM of micro holes on GC were then analyzed. As capacitance and voltage increased, material removal rate (MRR) increased while machining time tended to decrease. However, at low voltages, short circuit and secondary discharge occurred, which increased the electrode wear rate (EWR). As a result, a D-shaped electrode that could prevent short circuit and debris accumulation was fabricated and a micro hole array was machined.

목차

1. Introduction
2. Experimental Setup
3. Experimental Method
4. Experimental Results and Discussion
5. Conclusions
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