Surface Topography and Kerf Study of Nimonic 80A Using Wire-Cut EDM

Amitesh Goswami; Jatinder Kumar

doi:10.4028/www.scientific.net/MSF.808.35

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HomeMaterials Science ForumMaterials Science Forum Vol. 808Surface Topography and Kerf Study of Nimonic 80A...

Surface Topography and Kerf Study of Nimonic 80A Using Wire-Cut EDM

Abstract:

Nimonic-80A is a nickel based super alloy which is specifically used in aerospace industry for its high strength to weight ratio and corrosion resistance. This paper presents the influence of process parameters of wire cut Electrical Discharge Machining (WEDM) during the machining of Nimonic 80A with brass wire as electrode and optimization of machining parameters on kerf width. Process parameters (pulse-on time, pulse-off time, peak current, spark gap set voltage, wire feed and wire tension) have been investigated using L₂₇ orthogonal array. With the assistance of Taguchi quality design, ANOVA and F-test, significant parameters affecting the kerf have been identified. The surface topography of machined samples has been studied in correlation with the rate of input energy into the spark.

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Periodical:

Materials Science Forum (Volume 808)

Pages:

35-41

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.808.35

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Online since:

December 2014

Authors:

Amitesh Goswami*, Jatinder Kumar

Keywords:

EDS, Kerf, Nimonic 80A, Recast Layer, SEM, WEDM

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