OPTIMIZTION OF EDM PROCESS PARAMETERS ON C70600 AND C71500 BY USING TOPSIS METHOD
V. Sirisha Reddy
M. Tech Student, Department of Mechanical Engineering, JNTUA Pulivendula , IN
Yeswanth Kumar Reddy
M. Tech Student, Department of Mechanical Engineering, JNTUA Pulivendula , IN
Abstract
In present days of competitive environment all the companies across the world are trying to reach the market demand and increase the profits with out increasing the cost of the product.It can be achieved by reducing the losses with of high productivity and good surface finish.So it can be done by optimizing the process.Machining of hard metals,complex shapes with of traditional manufacturing is difficult.It is replaced by unconventional machining process.EDM is one of the unconventional machining processes used to
machining hard metals,complex shapes with of metal erosion technique by using all electro conductive materials. In EDM machine cutting paramets selection plays a crucial role to optimizing the process.Output parameters are affected by cutting parameters, considered in these experiment are discharge current, pulse on time, duty cycle. Output parameters are considered as material removal rate and surface roughness woring on C70600, C71500 workpiece materials by using brass, copper, tungsten carbide tools. Taguchi L27 orthogonal array is used to designing the experiments. TOPSIS(technique for order of preference by similarity to ideal solution) method and GRA(gray relation analysis) optimization technique will be used to optimizing the process.It is used to choose the best level of the design variables.Consequently,it reduces the differentiation in product and process to the least.Finally the best tool-work-piece combination is obtained.This obtained results provides useful information to control the process responses and ensure higher productivity.Accuracy and enhanced surface quality.
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