Surface Characterization and Tribological Performance Analysis of Electric Discharge Machined Duplex Stainless Steel

Ablyaz, T. R.; Шлыков, Е. С.; Муратов, К. Р.; Mahajan, Anupama; Singh, Gurpreet; Devgan, Sandeep; Sidhu, Sarabjeet Singh

doi:10.3390/mi11100926

Cited by 34 publications

(18 citation statements)

References 49 publications

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“…Electrical discharge machining (EDM) is a modern processing machining method for materials that are difficult to use with conventional methods [1][2][3] as a result of high hardness, high wear resistance, and other special properties [3][4][5][6][7][8][9]. EDM is a machining process that removes some of the work material from the workpiece using the high temperature produced by spark discharges to erode the workpiece [3,8,10].…”

Section: Introductionmentioning

confidence: 99%

Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode

Jamkamon

Janmanee

2021

Applied Sciences

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The performance of electrical discharge machining for drilling holes decreases with machining depth because the conventional flushing and electrode cannot completely eliminate debris particles from the machining area. In this study, a modified electrode for self-flushing in the electrical discharge machining process with a step cylindrical shape was designed to improve machining performance for deep hole drilling. The experimental results of the step cylindrical electrode showed that the material removal rate increased by approximately 215.7%, 203.8%, and 130.4%, and the electrode wear ratio decreased by approximately 47.2%, 63.1%, and 37.3%, when compared with a conventional electrode for the diameters of 6, 9, and 12 mm, respectively. In addition, the gap clearance and concavity of the side wall of the drilled hole was reduced with the step cylindrical electrode. The limited high flank of the electrode led to an increase in the escape area of the debris that was partially removed from the machining area, and the limited secondary spark on the side wall of the electrode resulted in a reduction in machining time.

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Section: Introductionmentioning

confidence: 99%

Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode

Jamkamon

Janmanee

2021

Applied Sciences

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“…In recent years, researchers have mainly focused on low production costs and better EDM performance outputs. The approach for lowering the EDM process cost is basically to choose Cu (or its alloys) as electrode material that possesses low raw material and production costs as well as high MRR and electrical wear resistance (i.e., low TWR and RW) [8,9].…”

Section: Introductionmentioning

confidence: 99%

Ti6Al4V Alaşımının Elektro Erozyon ile İşlemesinde Elektrolitik Cu ve CuBe Takım Elektrotlarının Performansının Karşılaştırılması

Urtekin¹,

Bozkurt²,

Özerkan³

et al. 2021

El-Cezeri Fen Ve Mühendislik Dergisi

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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.

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“…However, some reported work revealed that EDMed DSS-2205 alloy exhibits superior bioactivity as well as corrosion resistance responses compared to the unmachined substrate. 27,28 The present work aimed to investigate three different electrodes, namely graphite, tungsten, and copper-tungsten for the ED machining performance of the Co-Cr alloy and duplex stainless steel. The topographical examination of the machined surfaces was carried out via field emission scanning electron microscopy, whereas compositional studies of the treated samples analyzed using energy-dispersive Xray spectroscopy and X-ray diffraction analysis.…”

Section: Introductionmentioning

confidence: 99%

EDM performance characteristics and electrochemical corrosion analysis of Co-Cr alloy and duplex stainless steel: A comparative study

Mahajan

Singh²,

Devgan

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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Cobalt-chromium alloy (F-90) and duplex stainless steel (DSS-2205) belong to the family of metallic biomaterials, which are frequently used for the manufacture of dental prosthetics, artificial implants including knee and hip joints. This article addresses the investigation highlights of electrical discharge machining (EDM) of Co-Cr alloy and duplex stainless steel using different electrode materials for the evaluation of optimum machining parameters. The samples with superior machining performance and surface integrity were analyzed by electrochemical corrosion testing and found that the EDM treated samples portrayed a notable improvement in the corrosion resistance compared to bare metal. Our results demonstrated that both the substrates i.e. Co-Cr alloy and DSS-2205 were dominantly affected by the intensity of the applied current, and participated in the material removal rate with a contribution of 93.81% (23.37 mm3/min., Co-Cr alloy) and 87.32% (39.76 mm3/min., DSS-2205) respectively. However, the surface roughness of the machined Co-Cr alloy (1.080 µm) was majorly influenced by the current (contribution: 67.24%) and electrode (contribution: 28.27%). Whereas, pulse-on (contribution: 58.37%) and electrode (contribution: 30.52%) were significant for the surface roughness (1.150 µm) of the machined DSS-2205. Moreover, the machined surface also demonstrates the porosity (∼3 to ∼5 µm) and formation of intermetallic oxides, carbon phases on the samples machined at a higher value of current i.e. 16 Ampere. Field emission scanning electron microscopy and X-ray diffractometer were used to scrutinize the surface topography and compositional analysis of the machined substrates. The alternation of the substrate surface observed helpful in enhancing the corrosion resistance of Co-Cr alloy and duplex stainless steel by 80.88% (corrosion rate: 0.00029 mm/year) and 96% (corrosion rate: 0.00763 mm/year), comparative to their respective untreated samples.

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Surface Characterization and Tribological Performance Analysis of Electric Discharge Machined Duplex Stainless Steel

Cited by 34 publications

References 49 publications

Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode

Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode

Ti6Al4V Alaşımının Elektro Erozyon ile İşlemesinde Elektrolitik Cu ve CuBe Takım Elektrotlarının Performansının Karşılaştırılması

EDM performance characteristics and electrochemical corrosion analysis of Co-Cr alloy and duplex stainless steel: A comparative study

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