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Title
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Effect of Current in the EDM Machining of Aluminum 6061 T6 and its Effect on the Surface Morphology.
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Sub-Title |
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Subject |
MRR, White layer, Globule diameter, Inter-globule distance, Spark gap
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Author |
Samra Arooj, Masood Shah, Shahid Sadiq, Syed Hussa
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Publish Year |
2014 |
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Diss#. |
https://doi.org/10.1007/s13369-014-1020-z |
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Pages |
4187–4199 |
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Text Language |
English |
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Accession |
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Library Section |
Research Article |
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Abstract |
Electric discharge machining (EDM) produces a recast/white layer on the surface of the machined workpiece. Machining with EDM generally produces a higher surface roughness as compared to conventional machining processes. The operating parameters in EDM, i.e., “current”, “voltage”, “on time” and “off time” are directly related with the white layer formation, its thickness, morphology and roughness.
Machining of Al 6061 T6 cylinders is performed on diesinking
EDM machine with varying electric current values
to determine its effect on surface morphology in the case
of aluminum alloy. Material removal rate versus current is
determined for different current values. An attempt is made
to relate the globule formation on the machined surface,
with the machining current. Scanning electron microscopy,
optical microscopy and material composition study through
energy dispersive spectrography are performed. The white
layer thickness, globule diameter and inter-globule distance
are found to increase
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