Abstract
Wire electric discharge machining (WEDM) is one amongst the unconventional machining processes which might cut all kinds of shapes with an accuracy of +/−0.001mm. It will cut the materials that conduct electricity and can even cut the exotic metals like tungsten carbide, Hastelloy, Inconel etc. In the present work, machining on Inconel 600 by wire EDM with cryogenically treated brass wire is performed. Brass wire of 0.25mm diameter has been cryogenically treated at −90°C, −100°C and −110°C temperatures separately. An Experimental layout is designed as per Taguchi’s L-9 orthogonal array and experiments were conducted by varying machining parameters viz. Voltage, Pulse ON time and Pulse OFF time. The machining parameters are optimized using Taguchi’s methodology for minimum surface roughness and maximum metal removal rate (MRR). A Mathematical regression model for surface roughness and MRR is generated with the help of regression analysis. Through the Analysis of Variance (ANOVA) It was found that for MRR, pulse on time is the foremost contributing factor with 32.69% and for surface roughness, pulse off time is the foremost contributing factor with 23.59%.
Highlights
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
Summary
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.