TOZ KATKILI VE ISITILMIŞ DİELEKTRİĞİN ELEKTRO EROZYON İLE İŞLEMEDE (EEİ) DELİK DELME PERFORMANSI ÜZERİNE ETKİSİ

Yıl 2016, , 0 - 0, 06.09.2016

Oğuz Erdem , Can Çoğun , Levent Urtekin , Hacı Bekir Özerkan , İbrahim Uslan

https://doi.org/10.17341/gummfd.50769

Cited By: 3

Öz

Bu çalışmada, Elektro Erozyon ile İşleme (EEİ) yönteminde daha iyi yüzey kalitesinde delikler elde edebilmek için kendi ekseni etrafında dönen ortası delik pirinç elektrotla, hidrokarbon bazlı dielektrikler yerine karbon ve nişasta tozu katkılı ısıtılmış silikon yağı dielektrik sıvı olarak kullanılmıştır. Elektrik alan altındaki Elektro-reolojik (ER) akışkanın optimum sıcaklık ve toz konsantrasyon değerleri elektro-reometre deneyleri yardımıyla tespit edilmiştir. Döner ve dönmeyen elektrotla yapılan işlemelerde karbon tozu katkılı silikon yağı karışımlarında oldukça yüksek işparçası işleme hızı (İİH) değerleri elde edilirken, nişasta tozu katkılı silikon yağı karışımlarında düşük İİH değerleri elde edilmiştir. İşlenmiş delik yüzeylerinin optik mikroskop incelemelerinde, karbon tozu katkılı dielektriklerde işparçası yüzeyindeki kraterlerin çap ve derinlik açısından küçüldüğü böylece sivri uçlu tepelerin eşit şekilde dağıldığı ve yuvarlandığı görülmüştür. Döner ve dönmeyen elektrotla 30˚C ve 75˚C’lerdeki karbon tozu katkılı dielektriğe nişasta tozu katkısı, yüzey özelliklerini iyileştirmiştir.

Anahtar Kelimeler

elektro erozyon ile işleme, silikon yağı; nişasta tozu; döner elektrot; dielektrik ısıtması

Kaynakça

• Sarıkavak Y., Çoğun C., Elektro Erozyon ile İşlemede İşleme Mekanizmasının Isıl Modellenmesi, Journal of The Faculty of Engineering and Architecture of Gazi University, 25(3), 517-531, 2010.
• Singh A. K., Kumar S., Singh V. P., Effect of the addition of conductive powder in dielectric on the surface properties of superalloy Super Co 605 by EDM process, International Journal Advanced Manufacturing Technol, 77(2), 99-106, 2015.
• Hourmand M., Farahany S., Sarhan A. A. D., Noordin, M. Y., Investigating the electrical discharge machining (EDM) parameter effects on Al-Mg2Si metal matrix composite (MMC) for high material removal rate (MRR) and less EWR–RSM approach, International Journal Advanced Manufacturing Technol, 77(2), 831-838, 2015.
• Unses E., Cogun C., Improvement of Electric Discharge Machining (EDM) Performance of Ti-6Al-4V Alloy with Added Graphite Powder to Dielectric, Strojniski Vestnik-Journal of Mechanical Engineering, 61(6), 409-418, 2015.
• Kumar H., Development of Mirror Like Surface Characteristics Using Nano Powder Mixed Electric Discharge Machining (NPMEDM), International Journal Advanced Manufacturing Technol, 76, 105-113, 2015.
• Wong Y. S., Lim L. C., Rahuman I., Tee W. M., Near-mirror-finish Phenomenon in EDM Using Powder-mixed Dielectric, Journal of Materials Processing Technology, 79(2), 30-40, 1998.
• Reddy V. V., Valli P. M., Kumar A., Reddy C. S., Multi-objective Optimization of Electrical Discharge Machining of PH17-4 Stainless Steel with Surfactant-mixed and Graphite Powder–mixed Dielectric Using Taguchi-data Envelopment Analysis–based Ranking Method, Proceedings of the Institution of Mechanical Engineers-Part B, Journal of Engineering Manufacture, 229(3), 487-494, 2015.
• Gülcan O., Uslan İ., Usta Y., Çoğun C., Elektro Erozyon İle İşlemede Cu-Cr T/M Elektrot Kullanımının İşleme Performansına Etkisi, Journal of the Faculty of Engineering and Architecture of Gazi University, 30(3), 381-394, 2015.
• Chen S. L., Lin M. H., Huang G. X., Wang C. C., Research of the Recast Layer on Implant Surface Modified by Micro-current Electrical Discharge Machining Using Deionized Water Mixed with Titanium Powder as Dielectric Solvent, Applied Surface Science, 311, 47-53, 2014.
• Narumiya H., Mohri N., Saito N., Ootake H., Teunekewa Y., Takawashi T., Kobayashi., EDM by powder suspended working fluid, Proceedings of the 9th International Symposium for Electrode Machining, 5-8, 1989.
• Das A., Misra J. P., Experimental Investigation on Surface Modification of Aluminum by Electric Discharge Coating Process Using TiC/Cu Green Compact Tool-electrode, Machining Science and Technology, 16(4), 601-623, 2012.
• Kruth J. P., Froyen L., Stevens L., Dejonghe P., In-process Alloying of the White Layer of a Workpiece Machined by Die-sinking EDM, International Journal of Electrical Machining, 3(2), 33-38, 1998.
• Kumar D., Mittal K., Kataria S., Kadiyan S., Sharma S., Experimental Investigation on Surface Modification of WC-Co by Electric Discharge Coating Process Using SiC/Cu Green Compact Tool-electrode, International Journal of Research in Mechanical Engineering and Technology, 3(2), 274-278, 2013.
• Reddy V. V., Kumar A., Valli P. M., Reddy C. S., Influence of Surfactant and Graphite Powder Concentration on Electrical Discharge Machining of PH17-4 Stainless Steel, Journal of the Brazilian Society of Mechanical Science and Engineering, 37(2), 641-655, 2015.
• Peng H., Yu D., Zhang X., Wang S., Wen Y., Fabrication of Hollow Nickel Micro-spheres with High Degree of Hollowness by Silicon Powder-mixed Spark Erosion, International Journal of Machine Tools and Manufacture, 85, 131-134, 2014.
• Singh B., Kumar J., Kumar S., Influences of Process Parameters on MRR Improvement in Simple and Powder-Mixed EDM of AA6061/10%SiC Composite, Materials and Manufacturing Processes, 30(1), 303-312, 2015.
• Furutani K., Saneto A., Takezawa H., Mohri N., Miyake H., Accretion of Titanium Carbide by Electrical Discharge Machining with Powder Suspended in Working Fluid, Journal of International Societies for Precision Engineering and Nanotechnology, 25(2), 138-144, 2001.
• Singh A. K., Kumar S., Singh V. P., Optimization of Parameters Using Conductive Powder in Dielectric for EDM of Super Co 605 with Multiple Quality Characteristics, Materials and Manufacturing Processes, 29(3), 267-273, 2014.
• Singh B., Kumar J., Kumar S., Experimental Investigation on Surface Characteristics in Powder-Mixed Electrodischarge Machining of AA6061/10%SiC Composite, Materials and Manufacturing Processes, 29, 287-297, 2014.
• Lin Y. C., Yan B. H., Chang Y. S., Machining Characteristics of Titanium Alloy (Ti-6Al-4V) Using a Combination Process of EDM with USM, Journal of Materials Processing Technology, 104, 171-177, 2000.
• Uno Y., Okada A., Çetin S., Surface Modification of EDMed Surface with Powder Mixed Fluid, 2nd International Conference on Design and Production of Dies and Molds, Kuşadası, 34-42, 2001.
• Bai X., Zhang Q., Zhang J., Kong D., Yang T., Machining Efficiency of Powder Mixed Near Dry Electrical Discharge Machining Based on Different Material Combinations of Tool Electrode and Workpiece Electrode, Journal of Manufacturing Processes, 15, 474-482, 2013.
• Sidhu S. S., Batish A., Kumar S., Study of Surface Properties in Particulate-Reinforced Metal Matrix Composites (MMCs) Using Powder-Mixed Electrical Discharge Machining (EDM), Materials and Manufacturing Processes, 29, 46-52, 2014.
• Chow H. M., Yan B. H., Huang F. Y., Hung J. C., Study of Added Powder in Kerosene for the Micro-slit Machining of Titanium Alloy Using Electro-discharge Machining, Journal of Materials Processing Technology, 101, 95-103, 2000.
• Çoğun C., Özerkan B., Karaçay T., An Experimental Investigation on Effect of Powder Mixed Dielectric on Machining Performance in Electric Discharge Machining (EDM), Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 220(7), 1035-1050, 2006.
• Uno Y., Okada A., Surface Generation in Electrical Discharge Machining with Silicon Powder Mixed Fluid, International Journal of Electrical Machining, 2, 13-18, 1997.
• Özerkan H. B., Elektro erozyon ile işlemede toz karışımlı dielektrik sıvının işleme performansına etkisinin deneysel incelenmesi, Yüksek Lisans tezi, Gazi Üniversitesi Fen Bilimleri Enstitüsü, Ankara, 1-63, 2003.
• Urtekin L., Uslan İ., Tuç B., Investigation of Properties of Powder Injection-Molded Steatites, Journal of Materials Engineering and Performance, 21(3), 358-365, 2012.
• Urtekin L., Uslan İ., Tuç B., Investigation of Effect of Feedstock Rheologies for Injection Molding of Steatite, Journal of the Faculty of Engineering and Architecture of Gazi University, 27(2), 333-341, 2012.
• Yılmaz O., Bozdana A. T., Okka M. A., An Intelligent and Automated System for Electrical Discharge Drilling of Aerospace Alloys: Inconel 718 and Ti-6Al-4V, International Journal Advanced Manufacturing Technol, 74, 1323–1336, 2014.
• Yılmaz O., Okka M. A., Effect of Single and Multi-channel Electrodes Application on EDM Fast Hole Drilling Performance, International Journal Advanced Manufacturing Technol, 51, 185–194, 2010.
• Yılmaz V., Sarıkaya M., Dilipak H., Deep Micro-Hole Drilling for Hadfield Steel by Electro-Discharge Machining (EDM), Materiali in tehnologije/Materials and technology, 49(3), 377–386, 2015.
• Tsai Y. Y., Tseng C. H., Chang C.K., Development of a Combined Machining Method Using Electrorheological Fluids for EDM, Journal of Materials Processing Technology, 201, 565-569, 2008.