Investigation of Workpiece and Tool Surface Quality in Electro Discharge Machining of Al 5083 Alloy Produced by Powder Metallurgy
Abstract
Aluminum alloys are widely preferred in various fields such as aerospace, ship and automotive due to their lightness and relevant production cost. In this study, electro discharge technique was used in the processing of aluminum 5083 alloy (Al5083) produced by powder metallurgy method. The surface quality resulting from the experiments was investigated in terms of Ra, Rz and Rsm. Experimental studies were carried out according to Taguchi L9 orthogonal experimental design, using three different levels of discharge current, pulse on time and pulse off time parameters. As the discharge current increased, Ra and Rz increased, Rsm first decreased and then increased. As the pulse on time increased, Ra and Rz first increased and then decreased, and Rsm increased. When the pulse off time increased, Ra and Rz decreased and Rsm increased. As a result of the analysis of variance (ANOVA) performed to determine the effect rates of the variable parameters on the surface quality, the order of importance of the parameters was found to be discharge current, pulse off time and pulse on time. The effect of discharge current, which is the most effective parameter according to ANOVA, on Ra, Rz and Rsm was calculated as respectively 70.87%, 70.41% and 36.34%. Microscopic images taken from the tool (copper) and workpiece surface show that the craters and peaks formed by the spark effect are formed on both material surfaces.
Keywords
References
- 1. TMMOB Metalurji Mühendisleri Odası, Alüminyum raporu, Metalurji, (137): 1–43, 2004.
- 2. G. Önal, A. Ünüvar, T. Şi̇mşek, 5083 Al-Mg alaşımında mekanik özellikler üzerine korozyon etkisinin araştırılması, Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, 20 (2): 191–196, 2013.
- 3. A. Kaya, M. Aslan, N. F. Yilmaz, H. Kurt, Al-Mg-SiC kompozitlerin görünür yoğunluklarının Taguchi analizi, El-Cezeri, 7 (2): 773–780, 2020.
- 4. M. C. Santos, A. R. Machado, W. F. Sales, M. A. S. Barrozo, E. O. Ezugwu, Machining of aluminum alloys: a review, The International Journal of Advanced Manufacturing Technology, 86 (9): 3067–3080, 2016.
- 5. Y. Sun, L. Jin, Y. Gong, X. Wen, G. Yin, Q. Wen, B. Tang, Experimental evaluation of surface generation and force time-varying characteristics of curvilinear grooved micro end mills fabricated by EDM, Journal of Manufacturing Processes, 73: 799–814, 2022.
- 6. M. P. Groover, Fundamentals of Modern Manufacturing: Materials, Processes, and Systems, John Wiley & Sons, 4. Ed., 2010.
- 7. N. M. Kumar, S. S. Kumaran, L. A. Kumaraswamidhas, An investigation of mechanical properties and material removal rate, tool wear rate in EDM machining process of AL2618 alloy reinforced with Si3N4, AlN and ZrB2 composites, Journal of Alloys and Compounds, 650: 318–327, 2015.
- 8. L. Selvarajan, R. Sasikumar, N. Senthil Kumar, P. Kolochi, P. Naveen Kumar, Effect of EDM parameters on material removal rate, tool wear rate and geometrical errors of aluminium material, Materials Today: Proceedings, 46: 9392–9396, 2021.
Details
Primary Language
English
Subjects
Manufacturing and Industrial Engineering
Journal Section
Research Article
Authors
Publication Date
April 29, 2022
Submission Date
March 14, 2022
Acceptance Date
April 8, 2022
Published in Issue
Year 2022 Volume: 3 Number: 1
Cited By
Elektro Erozyon Yöntemi ile İşlenen Al2024-T3 Malzemesinin İşleme Parametrelerinin Optimizasyonu
Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji
https://doi.org/10.29109/gujsc.1439278Determination of the Optimum Conditions for Machining NiTi Shape Memory Alloys by Electrical Discharge Machining
Journal of The Institution of Engineers (India): Series C
https://doi.org/10.1007/s40032-024-01099-z