Investigation and parametric optimization with 97Mg+ 1.5Ag+1.5 LiAlO2 metal matrix composite in wire EDM performance using DFA technique
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In several research studies, many experiments have been conducted on non-traditional Electric Discharge Machining (EDM)and also investigated how different EDM process parameters influence the surface quality and productivity. EDM is a materialremoval process in which desired shape can be obtained by generation of spark. EDM process parameters play the vital role toimprove the surface finish and productivity simultaneously. This paper presents the effects of EDM machining parameter suchas Discharge ON Time, Discharge OFF Time, and Wire Feed, and their interactions on the Material Removal Rate (MRR) andSurface Roughness (SR) during the machining of magnesium matrix composites (MgZE41A) reinforced with Ag and LiAlO2. The hybrid composite of 97Mg+1.5Ag+1.5 LiAlO2 combination is selected for manufacture using powder metallurgy techniqueas it has a high wear resistance. Analysis of Variance (ANOVA) is adopted to study the influencing process parameters for eachresponse. Desirability function analysis (DFA) tool is adopted to find the optimal EDM process parameters which would reducethe surface roughness and improve the material removal rate simultaneously. From the analysis results it has been found thatdesirability ‘D’ of 0.55 gives the better results.
Abstract
In several research studies, many experiments have been conducted on non-traditional Electric Discharge Machining (EDM)and also investigated how different EDM process parameters influence the surface quality and productivity. EDM is a materialremoval process in which desired shape can be obtained by generation of spark. EDM process parameters play the vital role toimprove the surface finish and productivity simultaneously. This paper presents the effects of EDM machining parameter suchas Discharge ON Time, Discharge OFF Time, and Wire Feed, and their interactions on the Material Removal Rate (MRR) andSurface Roughness (SR) during the machining of magnesium matrix composites (MgZE41A) reinforced with Ag and LiAlO2. The hybrid composite of 97Mg+1.5Ag+1.5 LiAlO2 combination is selected for manufacture using powder metallurgy techniqueas it has a high wear resistance. Analysis of Variance (ANOVA) is adopted to study the influencing process parameters for eachresponse. Desirability function analysis (DFA) tool is adopted to find the optimal EDM process parameters which would reducethe surface roughness and improve the material removal rate simultaneously. From the analysis results it has been found thatdesirability ‘D’ of 0.55 gives the better results.
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