Investigations and Optimization on WEDM of O2 Steel

Document Type : Primary Research paper


Assistant Professor, Department of Automobile Engineering, Nehru Institute of Technology, Coimbatore


Wire Electrical discharge Machining
plays an important role in the field of strong
conductive metal machining. It offers accuracy,
precision, ability to achieve intricate profiles,
complex shaped components of any hardness,
unmanned machining, less noise and residual stress
on work. WEDM is stochastic process and hence
difficult to determine parameters for the
improvement of cutting performance and
optimization. The material and the machining hours
are expensive, hence instead of rule of thumb or
manufacturer's catalogue, DOE using Taguchi‟s
robust design L16 orthogonal array with four
important parameter at four levels each was applied
on O2 Tool steel. The optimum machining
parameter combination was obtained by using the
signal-to-noise ratio and the level of importance of
the machining parameters on the material removal
rate and surface roughness were determined from
analysis of variance. Confirmation experiment was
carried out. The results indicates high spark
duration, low wire-electrode speed and gap voltage
characteristics improves material removal by
29.5%,whereas, lower pulse duration, gap voltage
and high wire-electrode speed, reduces the surface
roughness by 11%. This result could be used for
multi-pass rough cuts or fine finish cut.


Volume 12, Issue 1
International virtual conference on Newer Trends and Innovation in Nanotechnology Materials Science . Science and Technology
March 2021
Pages 468-473