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To withstand in global manufacturing market it is necessary to acquire new technology
for producing new products. To achieve this advanced material plays an important role. NiTi alloy
is one such class of advanced material which has unique properties such as biocompatibility, high
strength, high corrosion resistance, shape memory effect etc. Due to such property these alloys have
wide application in the field of defence, aerospace, and medicine. As these applications required
high accuracy, precision and high strength of NiTi these are difficult to machine by conventional
machining processes. Hence to machine this advanced material non-conventional machining pro-
cesses i.e. electric discharge machining is employed. However EDM has a wide range of process
parameter and the aim of EDM users and manufacturers is to achieve optimal performance of
EDM. In view of this objective the present study focuses on optimization of electric discharge
machining process parameter for maximization of material removal rate while machining of NiTi
alloy. In the present study gap current, pulse on time, pulse off time, workpiece electrical conduc-
tivity, and tool conductivity were considered as process variables. Experiments were carried out as
per Taguchi’s L 36 orthogonal array. Based on the analysis it was found that work electrical conduc-
tivity, gap current and pulse on time are the significant parameters that affect the material removal
rate. The optimized material removal rate obtained was 7.0806 mm
3
/min based on optimal setting
of input parameter.

مقاله ISI انگلیسی اصلی
سال انتشار:2018
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 7 صفحه