Abstract
The square holes produced on Hastelloy B2 have a difficulty by using a Electrical Discharge Machining (EDM), Wire Electrical Discharge Machining (WEDM) and Laser Beam Machining (LBM) process due to the material properties. However, application components made up of Hastelloy require a square hole for specific needs in it. Hence, in this work, influences of EDM, WEDM and LBM process parameters on squareness at entry and exit, taper angle and cutting time are mainly analyzed. The novelty in this work is achieved by producing square holes of 0.5, 0.6, 0.7, 0.8 and 0.9 mm on a Hastelloy B2 sheet of thickness 1.8 mm. The corner radius, debris diameter, crack length, crack width, side wall surface roughness and electrode wear are also considered as responses. The Multi-Objective Optimization method by Ratio Analysis (MOORA) is used for obtaining the unique optimum parameters. The best process is identified based on the output results. The overall analysis reveals that wire electrical discharge machining exhibits better performance than laser machining. It is also concluded that a square electrode is able to produce unstable spark phenomena in the EDM process. MOORA enhances the performance measures.
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Acknowledgements
The authors thank the COVAI EDM at coimbatore for providing machining facility. The authors are also thankful to Carl zeiss india private limited at coimbatore for providing scanning electron microscopy facility.
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RN contributed to conceptualization, methodology, writing, reviewing, discussion, computation, methodology, software, writing discussion and RS contributed to review manuscript language and RM contributed to review manuscript language.
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Narasimmalu, R., Sundaresan, R. & Murugesan, R. Drilling performance analysis on hastelloy B2 through square hole. J Braz. Soc. Mech. Sci. Eng. 44, 244 (2022). https://doi.org/10.1007/s40430-022-03513-y
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DOI: https://doi.org/10.1007/s40430-022-03513-y