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CSME 2024/06
Volume 45 No.3
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303-318
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RSM-Based Modelling and Optimization of Performance Measures for WEDM of Inconel 706
Jwala Parshad a, Vivek Aggarwal and Neelkanth Grover
aMechanical Engineering Department, IKG Punjab Technical University Kapurthala (Punjab),
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Abstract:
Superalloy machining is a significant research concern due to the widespread increase in demand for this category of materials and specific issues with its machining. Due to its easy fabrication, excellent mechanical strength and outstanding high temperature capability, the Inconel 706 superalloy has become more popular than Inconel 718 in the gas turbine industry. Majority of the gas turbine elements have intricate shapes and requires high accuracy, high precision and excellent surface quality. The traditional machining of Inconel 706 superalloy delivers insuffi- cient profile accuracy, low precision and inadequate surface quality. Hence, Response Surface Methodology (RSM)-based experimental investiga- tion of performance measures for WEDM of Inconel 706 has been proposed to optimize the parameters for cutting rate and surface roughness. The existing tech- niques have not made experimental trials to evaluate the performance of WEDM of Inconel 706. Box and Hunter method which is based on central composite design has been used to design the experiments. It is utilized due to its flexibility, ability to run sequentially, and efficiency in providing the overall experimental error in a minimum number of runs. Single and Multi- response optimization using desirability function approach was performed to get the optimal parameter settings. The propose model was compared with the existing techniques such as grinding wheels (GW), cryogenic holding times (HT) and depth of cut (DOC) on the basis of degrees of freedom (DF), sum of squares (SS), mean square (MS), F-ratio, and PCR%. WEDM machining tool (Electronica Sprint cut ELPULS 40A DLX) along with Metrology Systems’ instrument RT-10 Plus has been used to control the process parameter on cutting rate and surface rough- ness. As a result, the proposed model well optimized the parameters of cutting edge and surface roughness
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Keywords: Inconel 706, WEDM machining tool, cutting rate, surface roughness, RSM
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*Corresponding author; e-mail: jparshad.singla@gmail.com
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©
2024
CSME , ISSN 0257-9731
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