Optimiranje kvalitete reza i hrapavosti površine Al 7 476-T7 351 legure obrađene WEDM postupkom uz primjenu “gray-based / sivo temeljene” Taguči metode

摘要

In this study, the effects of cutting parameters on kerf and surface roughness were experimentally investigated in WEDM. Al 7 475-T7 351 alloy was selected as the work material to conduct experiments. The factors selected for the optimization are the pulse on time, table feed rate and the wire speed, each of the factors in three different levels. An optimal parameter combination of the WEDM process was obtained by applying the grey relational analysis (GRA). Also, the analysis of variance (ANOVA) was carried out for finding out the contribution and the effects of machining parameters on the multiple performance characteristics (MPC).