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Mühendislik Fakültesi

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    Citation Count: Gülcan, O...et al. (2015). Effect of use of cu-cr p/m electrodes on machining performance of electric discharge machining. Journal of the Faculty of Engineering and Architecture of Gazi University, 30(3), 381-394.
    Effect of use of cu-cr p/m electrodes on machining performance of electric discharge machining
    (Gazi University, Fac Engineering Architecture, 2015) Gülcan, Orhan; Uslan, İbrahim; Usta, Yusuf; Çoğun, Can; 3113; 118190; 3837
    In this study, the effect of use of Cu-Cr powder metal (P/M) electrodes on EDM performance outputs, namely material removal rate (MRR), electrode wear rate (EWR), mean and maximum roughness of machined surface (R-a and R-z) and workpiece surface recast layer thickness, was investigated experimentally. The Cu-Cr P/M electrodes produced at different mixing ratios, compacting pressures and sintering temperatures were used to machine SAE 1040 steel. The analyses performed have shown that the electrode material is deposited on to the work surface as a layer and the powder mixing ratio, the compaction pressure and sintering temperature affect the EDM performance outputs
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    Citation Count: Gülcan, O., Uslan, İ., Usta, Y., Çoğun C. (2016). Performance and surface alloying characteristics of Cu-Cr and Cu-Mo powder metal tool electrodes in electrical discharge machining. Machining Science And Technology, 20(4), 523-546. http://dx.doi.org/10.1080/10910344.2016.1191031
    Performance and surface alloying characteristics of Cu-Cr and Cu-Mo powder metal tool electrodes in electrical discharge machining
    (Taylor&Francis Ltd, 2016) Gülcan, Orhan; Uslan, İbrahim; Yusuf, Usta; Çoğun, Can; 3113; 118190; 3837
    The main objective of this study is to investigate the effect of Cu-Cr and Cu-Mo powder metal (PM) tool electrodes on electrical discharge machining (EDM) performance outputs. The EDM performance measures used in the study are material removal rate (MRR), tool electrode wear rate (EWR), average workpiece surface roughness (R-a), machined workpiece surface hardness, abrasive wear resistance, corrosion resistance, and workpiece alloyed layer depth and composition. The EDM performance of Cu-Cr and Cu-Mo PM electrodes produced at three different mixing ratios (15, 25, and 35wt% Cr or Mo), compacting pressures (P-c = 600, 700, and 800MPa), and sintering temperatures (T-s = 800, 850, and 900 degrees C) are compared with those machined with electrolytic Cu and Cu PM electrodes when machining SAE 1040 steel workpiece. Analyses revealed that tool materials were deposited as a layer over the work surface yielding high surface hardness, strong abrasion, and corrosion resistance. Moreover, the mixing ratio, P-c, and T-s affect the MRR, EWR, and R-a values