STUDY OF SURFACE INTEGRITY OF A SURFACE MACHINED BY ELECTRO DISCHARGE MACHINING
Keywords:
Advanced Machining Process, EDM Process, Surface Integrity, Aspect RatioAbstract
During machining of metals by electrical discharged machining (EDM) process a large amount of heat is generated by which the surface characteristics of the metals are affected. But this phenomenon is unavoidable during the machining of metals by EDM process and some technical problems remain unsolved in the area of surface integrity of the machined workpiece. This paper describes effect of process parameters namely Current, Duty Factor and Aspect Ratio on the surface generated by electro discharge machining. Copper electrodes are used to create blind holes in SS 304 work piece material. The detailed analysis of the SEM micrographs is carried out to understand the effect of process parameters on surface integrity. It is found that current is the most significant parameter that affects the surface integrity. Effect of all the three parameters on generated surface profile is critically discussed.
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