TITLE:
Experimental Investigation of the Effect of Working Parameters on Wire Offset in Wire Electrical Discharge Machining of Hadfield Manganese Steel
AUTHORS:
Ashok Kumar Srivastava, Surjya Kanta Pal, Probir Saha, Karabi Das
KEYWORDS:
Hadfield Manganese Steel; WEDM; Pulse Time; Wire Offset; Average Gap Voltage; Response Surface Methodology
JOURNAL NAME:
Journal of Surface Engineered Materials and Advanced Technology,
Vol.3 No.4,
October
21,
2013
ABSTRACT: In this study, a series of tests have been conducted
in order to investigate the machinability evaluation of austenitic Hadfield manganese
steel in the Wire Electrical Discharge Machine (WEDM). Experimental investigations
have been carried out to relate the effect of input machining parameters such as
pulse on-time (Ton), pulse off-time (Toff), wire feed (WF),
and average gap voltage (V) on the wire offset in WEDM. No analytical approach gives the exact amount of offset required in WEDM and hence experimental
study has been undertaken. In this paper, a mathematical model has been developed
to model the machinability evaluation through the response surface methodology (RSM)
capable of predicting
the response parameter as a function of Ton, Toff, WF and V. The samples
are tested and their average prediction error has been calculated taking the average
of all the individual prediction errors. The result shows that this mathematical model reflects the independent, quadratic
and interactive effects of the various machining parameters on cutting speed in
WEDM process.