TAGUCHI METHOD FOR OPTIMIZING TOOL WEAR RATE AND OVERCUT IN ELECTRO DISCHARGE MACHINING

Yıl 2022, Cilt: 9 Sayı: 18, 471 - 480, 31.12.2022

Ali Kalyon

https://doi.org/10.54365/adyumbd.1079127

Öz

In this study, machinability of Caldie cold work tool steel on EDM machine was experimentally investigated by using Cu-Cr-Zr electrode for tool wear rate (TWR) and overcut. In the experiment tests, discharge current, pulse duration and duty cycle were used as processing parameters. Machinability levels were determined for the lowest TWR and overcut. The effect of level parameters on TWR and overcut were calculated with the help of ANOVA. Experimental results are interpreted with using three-dimensional graphics. While the optimum machining test condition for electrode wear rate was A1B1C1, the optimum machining level for overcut was determined as A1B1C2. As a result of ANOVA analysis, it was calculated that discharge current was the most powerful parameter on TWR and overcut.

Anahtar Kelimeler

EDM, Copper, Overcut, Tool wear rate, Optimization

ELEKTRO EROZYON İLE İŞLEMEDE TAKIM AŞINMA ORANININ VE YANAL AÇIKLIĞIN TAGUCHI YÖNTEMİ İLE OPTİMİZASYONU

Öz

Bu çalışmada, Caldie soğuk iş takım çeliğinin EEİ tezgahında işlenebilirliği, takım aşınma oranı ve yanal açıklık için Cu-Cr-Zr elektrot kullanılarak deneysel olarak incelenmiştir. Deneysel çalışmada işleme parametreleri olarak boşalım akımı, vurum süresi ve çevrim süresi kullanılmıştır. En düşük takım aşınma oranı ve yanal açıklık için işlenebilirlik seviyeleri belirlenmiştir. Seviye parametrelerinin takım aşınma oranı ve yanal açıklık üzerindeki etkisi ANOVA yardımıyla hesaplanmıştır. Deneysel sonuçlar üç boyutlu grafikler kullanılarak yorumlanmıştır. Elektrot aşınma oranı için optimum işleme deney koşulu A1B1C1 iken, yanal açıklık için optimum işleme koşulu A1B1C2 olarak belirlenmiştir. ANOVA analizi sonucunda elektrot aşınma oranı ve yanal açıklık üzerinde en güçlü parametrenin boşalım akımı olduğu hesaplanmıştır.

Anahtar Kelimeler

EEİ, Bakır, Yanal açıklık, Takım aşınma oranı, Optimizasyon

Kaynakça

• Sahu B. K., Datta S. and Mahapatra S. S. On Electro-Discharge Machining of Inconel 718 Super Alloys: An Experimental Investigation. Materials Today: Proceedings 2018; 5: 4861–9.
• Jafarian F. Electro discharge machining of Inconel 718 alloy and process optimization. Materials and Manufacturing Processes 2020; 35: 95–103.
• Rahul, Datta S., Bhusan B. B. Experimental Studies on Electro-Discharge Machining of Inconel 825 Super Alloy Using Cryogenically Treated Tool/Workpiece. Journal of the International Measurement Confederation 2019; 145: 611–30.
• Mahdieh M. S. The Surface Integrity of Ultra-Fine Grain Steel, Electrical Discharge Machined Using Iso-Pulse and Resistance–Capacitance-Type Generator. Proceedings of the Institution of Mechanical Engineers, Part L 2020; 234: 564–73.
• Mascaraque-Ramírez C. and Franco P. Comparison Between Different Methods for Experimental Analysis of Surface Integrity in Die-Sinking Electro-Discharge Machining Processes. Proceedings of the Institution of Mechanical Engineers, Part B 2020; 234: 479–88.
• Niamat M, Sarfraz S, Shehab E, Ismail S. O. and Khalid Q. S.. Experimental Characterization of Electrical Discharge Machining of Aluminum 6061 T6 Alloy Using Different Dielectrics. Arabian Journal for Science and Engineering, 44, pp. 8043–52.
• Tiwary A. P., Pradhan B. B. and Bhattacharyya B. Influence of Various Metal Powder Mixed Dielectric on Micro-EDM Characteristics of Ti-6Al-4V. Materials and Manufacturing Processes 2019; 34: 1103–19.
• Pradhan D. M. K. Multi-Objective Optimization of MRR, TWR and Radial Overcut of EDMed AISI D2 Tool Steel Using Response Surface Methodology, Grey Relational Analysis And Entropy. Journal for Manufacturing Science and Production 2012; 12: 51–63.
• Dave H. K., Mathai V. J., Mayanak M. K., Raval H. K. and Desai K. P. Study on Effect of Process Parameters on Overcut and Tool Wear Rate During Micro-Electro-Discharge Slotting Process. International Journal of Advanced Manufacturing Technology 2016; 85: 2049–60.
• Ahmed N., Ishfaq K., Rafaqat M., Pervaiz S., Anwar S. and Salah B. EDM of Ti-6Al-4V: Electrode and Polarity Selection for Minimum Tool Wear Rate and Overcut. Materials and Manufacturing Processes 2019; 34: 769–78.
• Pradhan M. K. Estimating the Effect of Process Parameters on MRR, TWR and Radial Overcut of EDMed AISI D2 Tool Steel by RSM and GRA Coupled with PCA. International Journal of Advanced Manufacturing Technology 2013; 68: 591–605.
• Rouniyar A. K., Shandilya, P. Semi-empirical modeling and optimization of process parameters on overcut during MFAPM-EDM of Al6061 alloy. Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 2021; 235: 1784-1796.
• Belgassim, O., Abusaada, A. Investigation of the influence of EDM parameters on the overcut for AISI D3 tool steel. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 2012; 226: 365-370.
• Chiang, H. N., Wang, J. J. An analysis of overcut variation and coupling effects of dimensional variable in EDM process. The International Journal of Advanced Manufacturing Technology 2011; 55: 935-943.
• Dewangan S., Biswas C. K. and Gangopadhyay S. Optimization of the Surface Integrity Characteristics of EDM Process Using PCA based Grey Relation Investigation. Procedia Materials Science 2014; 6: 1091–6.
• Muthukumar V., Rajesh N., Venkatasamy R., Sureshbabu A. and Senthilkumar N. Mathematical Modeling for Radial Overcut on Electrical Discharge Machining of Incoloy 800 by Response Surface Methodology. Procedia Materials Science 2014; 6: 1674–82.
• Lin Y. C., Wang A. C., Wang D. A. and Chen C. C. Machining Performance and Optimizing Machining Parameters of Al2O3–TiC Ceramics Using EDM Based on the Taguchi Method. Materials and Manufacturing Processes 2009; 24: 667–74.
• Lin M. Y., Tsao C. C., Huang H. H., Wu C. Y. and Hsu C. Y. Use of the Grey-Taguchi Method to Optimise the Micro-Electrical Discharge Machining (Micro-EDM) of Ti-6Al-4V Alloy. International Journal of Computer Integrated Manufacturing 2015; 28: 569–76.
• Kalyon A. Elektro Erozyon ile İşlemede Yüzey Pürüzlülüğünün ve İş Parçası İşleme Hızının Taguchi Tekniği ile Optimizasyonu Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi 2019; 21: 595–605.
• Mohri N., Suzuki M., Furuya M., Saito N., and Kobayashi A. Electrode Wear Process in Electrical Discharge Machinings. CIRP Annals 1995; 44: 165–8.
• Chen S. L., Yan B. H. and Huang F. Y. Influence of Kerosene and Distilled Water as Dielectrics on the Electric Discharge Machining Characteristics of Ti-6A1-4V. Journal of Materials Processing Technology 1999; 87: 107–11.