Abstract:To manufacture quality products at lowest cost in industries, optimization is an effective technique which can be applied to find out the best manufacturing conditions. The objective of this research work is to examine the effect of control factors and to choose the correct settings of these factors to maximize MRR and minimize surface roughness and overcut while WEDM of Inconel-625. The control factors chosen for the study are pulse on time, pulse off time, servo voltage, peak current, wire feed rate and wire tension. Experiments were planned as per Taguchi's L27 orthogonal design under diverse cutting conditions of control factors. Data envelopment analysis based ranking technique (DEAR) was employed for multi-quality characteristic optimization. The optimal values of control factors was found as pulse on time 118 µs, pulse of time 41µs, servo voltage 30 volts, peak current 230 Amp, wire feed rate 1 m/min and wire tension 5 Gram. From the outcomes of the ANOVA, Pulse-on time was found to be the major significant factor affecting the quality characteristics.
Quality Maintenance also known as QM is one of the essential pillars of Total Productive Maintenance (TPM). The main objective of Quality Maintenance is to achieve Zero Defects. It does this by understanding and controlling the process interactions between manpower, material, machines and methods that may enable the defects to occur or generate. In this research paper the defects occurring in Polyurethane Lining Process are considered. This research paper reflects into the occurrences and analysis of defects occurring in Polyurethane Lining (PU) Process by using QM Methodology on Sporadic Defects or A-type of defects. The efficient use of the seven steps of QM methodology is implemented so that the defects are eliminated and the process is defect free. Moreover, it would also enable for the sustenance of the Zero Defects in PU Lining process.
Inthisstudy,multi-featureoptimizationisperformedusingahybridapproachofutilitytheory(UT) combinedwiththeprincipalcomponentanalysis(PCA)duringwireelectricaldischargemachining (WEDM)ofTi-6Al-4V.Taguchi'sL 27 orthogonalcollectionisusedtoevaluatetheeffectsofthe pulseontime,pulseofftime,peakcurrent,servovoltage,wirefeedrateandcabletensiononsurface roughness(SR),overcutandmetalremovalrate(MRR).Theutilityconceptisemployedtoturnthe multi-feature problem into a distinct equivalent feature called as overall efficiency index (OEI). Optimalsetsofgoverningparametersusingahybridapproachareestablishedasthepulseontime 114machineunit,pulseofftime55machineunit,servovoltage20volts,peakcurrent190Amp.,wire feedrate5m/minandcabletension2deviceunit.ScanningElectronMicroscopic(SEM)analysisof cutsurfacesshowsalumpofdebris,microvoids,micro-cracks,andlargedarkcratersathighvalues ofthepulseontime.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.