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SUBMITTED BY:

ABHISHEK KUMARAKASH DHAR

AKHILESH KUMARARVIND KUMAR

Under The Guidance Of:

Mr. Amit Joshi Sir

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The effect of three input processparameters and two levels used in WEDMhave been investigated to reveal theirimpact on output parameter i.e. materialremoval rate(MRR) by using taguchimethodology on OHNS EN -31 STEEL.

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Development of experimental set up providingvarying range of input parameters in WEDMand measuring the various response.Investigation of the working ranges and theworking levels of the WEDM process

parameter affecting the selected qualitycharacteristics by using one factor at a time.

PHASE-I

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Investigation of the effects of WEDMprocess parameters on qualitycharacteristics. For e.g. Input parameters:Spark gap voltage, Pulse On Time ,PulseOf Time while machining OHNS EN -31

Optimization of quality characteristics ofmachine part

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Development of mathematicalmodel of input parameters using

Taguchi method.

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Wire Electrical Discharge Machining

WEDM is a four axis machine and capable ofcontrolling all four axis simultaneously.WEDM utilizes continuously travelling wireelectrode made of thin copper , brass ortungsten.

This wire is kept in tension using mechanicaltensioning device.During WEDM process the material is erodedahead of the wire and there is no contact b/wwork piece and wire.

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Spark gap voltagePulse on timePulse off timeDischarge currentWire speedWire tensionDielectric flow rate etc.

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M.REZA,HODA AMINI,S.YAZDIResearch work:Modeling and analysis of processparameters on state variables in WEDM ofTiB2 nanocomposite ceramic,2010.Surface roughness and MRR

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C.P.S.Prakash , B.J.RanganathResearch work:Influence of machining parameters inWEDM for different work piecethickness,2008 etc.

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OHNS EN-31It is a high carbon alloy steel whichachieves a high degree of hardness withcompressive strength and abrasionresistance.Chemical composition:C:0.9-1.2 ,Mn:0.32-0.75 ,Si:0.1-0.35 ,S:0.040 , P:0.040 , Cr:1.00-1.6

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Taguchi methods are statistical methodsare used to improve the quality ofmanufactured goods.Applied to engineering , biotechnology ,marketing.

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A reduction in the variation of a product orprocess design to improve quality andlower the loss imparted to society.A proper product or processimplementation strategy which can furtherreduce the level of variation.

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