탄화규소/알루미늄 금속계 복합재료의 형상방전가공 = Die Sinking Electrical Discharge Machining of SiC/Al Metal Matrix Composite

다국어 초록 (Multilingual Abstract)

Conductive metal matrix composite(MMC) material of 30% silicon carbide particulate based on aluminum matrix was machined by die sinking electrical discharge machining(EDM) process according to different current and duty factor for reverse polarity of electrode. Material removal rate(MRR) was examined by process under various operating conditions. The surface morphology was evaluated by surface roughness parameter and scanning electron microscopy(SEM) research. The MRR was suddenly increased over 11 ampere of current, and it was slightly changed over 0.3 of duty factor. The maximum surface roughness of EDMed surface was affected by the duty factor. The SEM photographs of EDMed surface showed wide recast distribution region of melting materials as increased of current and duty factor.