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Your search keyword '"Uslan, İbrahim"' showing total 2 results
Start Over Author "Uslan, İbrahim" Topic electrical discharge machining
2 results on '"Uslan, İbrahim"'

1. The comparison of performance of electrolytic cu and cube tool electrodes in electric discharge machining of ti6al4v alloy [Ti6al4v alaşımının elektro erozyon ile işlemesinde elektrolitik cu ve cube takım elektrotlarının performansının karşılaştırılması]

Author

Urtekin, Levent, Bozkurt, Fatih, Özerkan, H. Bekir, Çoğun, Can, Uslan, İbrahim, Mühendislik-Mimarlık Fakültesi, and Levent Urtekin / 0000-0003-4348-4749

Subjects
Electrical discharge machining, Ti6Al4V, Tool electrode, CuBe alloy, Electrolytic copper
Abstract

The most crucial cost element of Electric Discharge Machining (EDM) is the production of tool electrode (shortly electrode). Copper, its alloys, and graphite are the most commonly used electrode materials. Selecting the proper electrode material with low production and material cost, high workpiece material removal rate (MRR) and low tool electrode wear rate (TWR) is key to reducing machining costs with EDM. In this study, the EDM performance of CuBe tool electrodes in the machining of Ti6Al4V alloy was experimentally investigated in comparison to electrolytic Cu (E-Cu) electrodes for different pulse time (ts) and discharge current (I) settings. An increase in MRR and a decrease in TWR and relative wear (RW=TWR/MRR) were observed in machining with CuBe electrodes. However, the high raw material cost of CuBe alloy is an essential drawback in widely using these electrodes in industrial applications. A new performance index formulation is introduced for EDM applications that factor in the production cost of the electrode and its life (i.e., RW). According to our results, the CuBe could be used advantageously as the electrode material at medium current settings. However, at low and high current settings, the low raw material cost of E-Cu makes it more favorable. © 2021, TUBITAK. All rights reserved.

Published
2021

2. Performance and surface alloying characteristics of Cu–Cr and Cu–Mo powder metal tool electrodes in electrical discharge machining.

Author

Gülcan, Orhan, Uslan, İbrahim, Usta, Yusuf, and Çoğun, Can

Subjects
*COPPER alloys, *SURFACE roughness, *FRETTING corrosion, *CORROSION resistance, *SINTERING
Abstract

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 (Ra), 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 35 wt% Cr or Mo), compacting pressures (Pc= 600, 700, and 800 MPa), and sintering temperatures (Ts= 800, 850, and 900 °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,Pc, andTsaffect the MRR, EWR, andRavalues. [ABSTRACT FROM AUTHOR]

Published
2016
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