Electrical discharge machining is a process for capable of machining geometrically deep complex shaped holes and shaping hard metals by arc erosion in all kinds of electro conductive materials that are difficult to machine by any other non-traditionalprocess. The objective of this project is to study the influence of operating parameter of EDM on machining characteristics such as surface quality, material removal rate and surface roughness of work piece produced. The thermal erosion theory is most accepted mathematical model for evaluating material removal during EDM process. The present works generate a thermal electrical model for spark generated by electrical discharge in liquid media and determine the temperature distribution of tool and work piece. For single discharge test, copper and En-19 is used as specimens. Better machining performance is obtained generally with the electrode as the cathode and work piece as anode. Study ware carried out on the influence of the parameter such as peak current in high temperature. Finite element method is used to solve the underlying governing equations. Material removal rate and maximum surface roughness are determined in varying condition of current.
Article Details
Unique Paper ID: 144894
Publication Volume & Issue: Volume 4, Issue 6
Page(s): 68 - 72
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