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Experimental investigation of surface crack density and recast layer thickness of WEDMed Inconel 825 | ||
Journal of Computational & Applied Research in Mechanical Engineering (JCARME) | ||
مقاله 16، دوره 11، شماره 1، آذر 2021، صفحه 205-216 اصل مقاله (1.12 M) | ||
نوع مقاله: Research Paper | ||
شناسه دیجیتال (DOI): 10.22061/jcarme.2020.6401.1814 | ||
نویسندگان | ||
Pawan Kumar* 1؛ Meenu Gupta2؛ Vineet Kunar3 | ||
1Department of Mechanical Engineering, Chandigarh Engineering College, Landran ,Mohali, India | ||
2Department of Mechanical Engineering, National Institute of Technology, Kurukshetra, India | ||
3Department of Mechanical Engineering, UIET, Maharishi Dayanand University, Rohtak, India | ||
تاریخ دریافت: 21 دی 1398، تاریخ بازنگری: 18 خرداد 1399، تاریخ پذیرش: 19 خرداد 1399 | ||
چکیده | ||
The present research attempts to analyze the surface topography of WEDMed Inconel 825 concerning surface crack density (SCDi) and recast layer thickness (RCLt). Formation of cracks, recast layer, and heat-affected zone are the major issues in determining the final performance of the WEDM machined sample. In this study, WEDM characteristics viz. pulse on time (Ton), pulse off time (Toff), gap voltage (SV), peak current (IP), wire tension (WT), and wire feed (WF) are optimized for the response SCDi and RCLt by response surface methodology. The outcome manifests that the topography of the machined surface becomes more rougher at the increased value of Ton, IP, and SV. RSM emerges as a great tool in the development of a predicted model based on the desirability approach and finding optimal parametric combinationm which results in reduced SCDi and RCLt. At the optimum combination of process parameters, i.e., 109 machine unit Ton, 36 machine unit Toff, 54 V SV, 120A IP, 9 machine unit WT and 7 m/min WF, the values obtained for SCDi and RCLt are 0.00160 μm/μm2 and 20.991μm, respectively with an error of less than 5%. | ||
کلیدواژهها | ||
Wire-cut electrical discharge machining؛ Inconel 825؛ Surface crack density؛ Recast layer thickness؛ RSM؛ Desirability | ||
مراجع | ||
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