Influences of Process Parameters on MRR Improvement in Simple and Powder-Mixed EDM of AA6061/10%SiC Composite
By B. Singh, Jatinder Kumar, Sudhir Kumar. 2015
149 citations recorded by the source corpus.
In the present work, aluminum alloy 6061/10%SiC composite is machined using numerical controlled Z-axis (ZNC) electrical discharge machining (EDM) process. Improvement in material removal rate (MRR) is explored using tungsten powder suspended dielectric fluid in EDM process (powder-mixed electrical discharge machining (PMEDM)). Peak current, pulse on time, pulse off time, and gap voltage are studied as process parameters. Mathematical relation between process parameters and MRR is established on basis of response surface methodology. The results obtained are further compared with MRR achieved from machining using simple EDM. The existence of tungsten particles in kerosene resulted in 48.43% improvement in MRR. The influence of tungsten powder-mixed dielectric fluid on machined surface is analyzed using scanning electron microscope and energy dispersive spectroscopy (EDS). The results revealed improvement in surface finish and reduction in recast layer thickness with PMEDM. EDS analysis reported presence of tungsten and carbon in recast layer deposited on machined surface.
Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/8bc8d71846e2297141757471efb94eac081a458a
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Citations in the corpus
- Processing issues, machining, and applications of aluminum metal matrix composites (2018, background): “that affect the economy and the pace of the production process.([229,255,256]) The operational cost of machining is proportional to the square of the MRR.”
- A review on conventional and nonconventional machining of SiC particle-reinforced aluminium matrix composites (2020, background): “43% enhancement of MRR in the machining of AA6061/10%SiC composite [247] and 42.”
- Experimental investigations in powder mixed electric discharge machining of Ti–35Nb–7Ta–5Zrβ-titanium alloy (2017, background): “[35] have reported that 4 g/l powder concentration is optimum at which the discharge gap is high and as a result the generated thermal energy”