導電性ジルコニア系セラミックスのワイヤ放電加工特性について

概要

論文の詳細を見る
Conductive zirconia ceramics, which contain 22.5 to 45% NbC, were machined by a wire electro-discharge machining. The zirconia containing 27.5% TiC and the alumina containing 27.5% TiC were also machined. The machining rate and surface roughness were measured for different pulse durations and D.F.values, and cutting mechanism in the zirconia ceramics was investigated by a micrographic analysis of machined surface. It is obvious that there exists an optimum duty factor from a standpoint of machining rate. As NbC content is increased, machining rate increses and reaches a maximum, while the surface roughness becomes better with NbC content. A large number of tiny discharge craters were observed in the machined surface, and due to this tiny craters the surface roughness does not increase so much even at high machining rates.
公益社団法人精密工学会の論文
1992-03-05