INFLUENCE OF WIRE-EDM PARAMETERS ON SURFACE CHARACTERISTICS OF SUPERALLOY MONEL 400
N. E. Arun Kumar,
A. Suresh Babu,
M. Subramanian and
C. Pradeep Kumar
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N. E. Arun Kumar: Department of Mechanical Engineering, St. Joseph’s College of Engineering, Old Mamallapuram Road, Chennai 600119, Tamilnadu, India
A. Suresh Babu: ��Department of Manufacturing Engineering, College of Engineering, Guindy, Anna University, Chennai 600025, Tamilnadu, India
M. Subramanian: Department of Mechanical Engineering, St. Joseph’s College of Engineering, Old Mamallapuram Road, Chennai 600119, Tamilnadu, India
C. Pradeep Kumar: Department of Mechanical Engineering, St. Joseph’s College of Engineering, Old Mamallapuram Road, Chennai 600119, Tamilnadu, India
Surface Review and Letters (SRL), 2022, vol. 29, issue 03, 1-9
Abstract:
Progressive development in the industrial field leads to the increasing demand for superalloys with enhanced mechanical properties, such as toughness, hardness, ductility, damping strength, tensile strength and improved surface finish. Monel 400, one of such superalloys, with the majority of its application in aerospace and marine fields demands a good super finish. There arises the need for some nonconventional processes like WEDM. This process is more effective to obtain complex shapes to close tolerance. This research focuses on clear understanding of the machining strategies with proper parametric combinations to achieve an improved surface finish, subsequently reducing the time and expense involved in the superfinishing procedure. The surface qualities of the selected samples are validated with the help of roughness profile and topography images. This study has proven that the increasing input current and wire feed rate (WFR) consistently decreases the surface roughness (SR; Ra) of the specimen. This paper also explains the effect of topographic parameters and microstructure over the resulting SR. In addition, the consistent contribution of WFR and input current toward the lower SR is established. The relationship between morphological behavior and parametric deviations is evaluated. A significant correlation found to exist between the rate of wire feed and the height parameters of SR such as Ssk, Sku, etc.
Keywords: Wire electrical discharge machining; Monel 400 alloy; surface topography; material removal rate; microstructure analysis (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0218625X22500317
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