Influence of the angle of cut of workpiece on taper and corner roundness during Wire Electrical Discharge Machining (WEDM)

Khan, Ahsan Ali and Al Hazza, Muataz Hazza Faizi and Mohiuddin, A. K. M. and Ali, Mohammad Yeakub (2017) Influence of the angle of cut of workpiece on taper and corner roundness during Wire Electrical Discharge Machining (WEDM). International Review of Mechanical Engineering (IREME), 11 (3). pp. 208-212. ISSN 1970-8734 E-ISSN 2532-5655

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Abstract

Wire electrical discharge machining (WEDM) is a unique machining technique which is capable of machining parts with high degree of complexity regardless of their hardness. However, when high precision and accuracy are needed, the taper and corner roundness on the workpiece machined need to be controlled to ensure that the parts can perform their intended function. Parameters such as angle of the profile cut; peak current (IP) and wire speed (WS) might affect the taper and the corner roundness of the machined workpiece. To know the sharpness of the profile, the corner roundness and taper of the kerf should be assessed. Hence, to assess the influence of IP and WS on angle of the profile cut, the design of experiment (DOE) was used for this investigation. By employing full factorial design of DOE, eight runs were conducted for each of the responses which are corner radius and taper angle. The experiments were performed by using brass as the wire electrode and stainless steel 304 (SS 304) as the workpiece. The taper (in terms of angle) is calculated by using the value of kerf width at the top and bottom of the cut. The corner roundness was also measured using a measuring microscope. It was found that the degree of angle of cut and IP have a significant effect on taper angle and corner roundness while the significance of WS is low. From the analysis, it is found that the optimum value of the angle of the cut, IP and WS are 117.47°, 5.00A and 10.00 mm/s respectively. By knowing the significance of the angle of the profile cut, IP, and WS and the optimum values, the profile with low taper and sharp corner can be achieved.

Item Type:	Article (Journal)
Additional Information:	3129/57281
Uncontrolled Keywords:	WEDM, Angle of Cut, Taper of Cut, Corner Roundness, Current, Wear Speed
Subjects:	T Technology > TS Manufactures T Technology > TS Manufactures > TS200 Metal manufactures. Metalworking
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Prof. Dr. A K M Mohiuddin
Date Deposited:	15 Jun 2017 15:14
Last Modified:	07 Jul 2017 09:25
URI:	http://irep.iium.edu.my/id/eprint/57281

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