Analysis of the relationship between the properties of selected materials and the parameters of the EDD process

Trajer, Marcin

doi:10.21741/9781644902479-189

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…Among the materials for which the EDM process is used, there are innovative engineering materials, such as nickel-chromium superalloys, titanium alloys, permanently hardened, very hard materials [1][2][3]. Strength and thermal parameters of such alloys or superalloys allow for their use for parts in aviation and automotive industries [4,5]. Furthermore, many parts in these industries require micro-scale geometries, for example, the manufacturing technology of turbine blades in aviation.…”

Section: Introductionmentioning

confidence: 99%

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A Study on the Channel and Gap Flow Simulation For Electrical Discharge Micro-Drilling of Inconel 718 Superalloy

Machno,

Trajer,

Czeszkiewicz

et al. 2024

Adv. Sci. Technol. Res. J.

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The process of electrical discharge micro-drilling (micro-EDD) of micro holes is used in the aviation, automotive and biomedical industries. In this process, an important issue affecting the stability and efficiency of the process is the flow of the working fluid through the tool electrode channel and the front and side gap areas. Because tool electrodes have diameters below 1 mm. Many factors present in the EDM-drillig process occurring on a micro scale mean that a full explanation of the phenomena affecting the process is limited. The solution is to analyze the phenomena in the process based on the results of numerical simulations, which are based on real measurements. The aim of this work is to analyze the flow of de-ionized water through a brass single-channel electrode with a channel diameter of 0.11 mm and a front and side gap. The liquid flow was analyzed for various variants (with and without cavitation, with added rotation of the tool electrode, with and without surface roughness with material particles). In simulation, it is important to gradually increase the complexity of the model, starting with the simplest model and gradually adding further phenomena. Analysis of the simulation results showed a significant impact on the liquid flow of cavitation, as well as the presence of vortex gaps in some areas, which have a significant impact on the process of drilling micro holes.

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Section: Introductionmentioning

confidence: 99%

“…The phenomena occurring throughout the EDM process still require more research. Additionally, new alloys and superalloys are still being developed for the aviation and automotive industries, and their thermal properties (such as low thermal conductivity, high melting temperature) influence the process of material removal via EDM [4,12].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Channel and Gap Flow Simulation For Electrical Discharge Micro-Drilling of Inconel 718 Superalloy

Machno,

Trajer,

Czeszkiewicz

et al. 2024

Adv. Sci. Technol. Res. J.

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“…Due to the aforementioned disadvantages and limitations versus pure copper as a material for electrodes for the EDM process, intensive research projects are being conducted to find appropriate materials to increase the efficiency of the process. The materials used for the electrodes include copper and its alloys 10 – 12 , 20 , graphite 13 , 14 , copper graphite 15 , tellurium copper 6 , tungsten 16 , 20 , tungsten carbide 16 , silver 17 , silver tungsten 18 and aluminum 19 , 20 .…”

Section: Introductionmentioning

confidence: 99%

Effect of microstructure refinement of pure copper on improving the performance of electrodes in electro discharge machining (EDM)

Skiba,

Kulczyk,

Przybysz-Gloc

et al. 2023

Sci Rep

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The paper presents an analysis of the impact of plastic deformation using hydrostatic extrusion (HE) on the structural, mechanical and functional properties of pure copper for use as electrodes in the process of electro discharge machining (EDM). As part of the research, copper was subjected to the HE process with the maximum cumulative true strain equal to ɛcum = 3.89 obtained in 5 stages. The result was, a refinement of the microstructure with the grains elongated in the direction of extrusion, with a cross-sectional size of d2 = 228 nm. As the obtained material can be potentially used in the process of electro discharge machining, the copper specimens after the HE process were subjected to a comprehensive analysis to determine the mechanical, physical and functional properties of the material. A significant increase in strength (UTS) and yield strength (YS) of the HE-processed copper was obtained, reaching respectively UTS = 464 MPa and YS = 456 MPa at the maximum strain of ɛ = 3.89. Despite the clear strain-induced strengthening of the material, a very high electrical conductivity of not less than 97% was obtained. The electrodes made of copper after HE process have reduced erosion wear while maintaining a comparable or better quality of the machined surface. The best results were obtained for finish machining, where the electrical discharge wear was lower by 60% compared to the electrode made of non-processed copper. In addition, an improvement in the surface quality after the EDM process by 25% was observed when using the HE-processed electrodes.

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CoCrMo Alaşımının Toz Katkılı Elektrik Deşarj ile İşlenmesinde Malzeme Kaldırma ve Takım Aşınma Hızının Cevap Yüzeyi Modellemesi

ÇAVDAR,

YILDIZ,

KANCA

2023

Journal of Materials and Mechatronics: A

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Electric discharge machining (EDM) is commonly used in implant manufacturing due to the challenge of machining materials that are widely employed in these applications. The study applies response surface methodology to model the impact of powder concentration and machining parameters in powder mixed EDM of CoCrMo alloys, a prevalent material for implantation. AISI 316L stainless steel was selected as the electrode material, while Ti6V4Al was chosen as the additive powder based on their biocompatibility properties. An experimental design was created using a Taguchi L16 array, which involved selecting 4 levels for each parameter of additive ratio, discharge current, pulse on time, and pulse off time. Regression models were developed for material removal rate (MRR) add tool wear rate (TWR) with satisfactory coefficients of determinations (0.87). Effect of the process parameters on MRR and TWR were analysed by means of 3D response surface plots. As a result of the modeling, it was revealed that discharge current, puls on time positively affected MRR, powder concentrations and puls off time negatively affected it. On the other hand, all of the considered process parameters have increasing effect on TWR.

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Analysis of the relationship between the properties of selected materials and the parameters of the EDD process

Cited by 3 publications

References 24 publications

A Study on the Channel and Gap Flow Simulation For Electrical Discharge Micro-Drilling of Inconel 718 Superalloy

A Study on the Channel and Gap Flow Simulation For Electrical Discharge Micro-Drilling of Inconel 718 Superalloy

Effect of microstructure refinement of pure copper on improving the performance of electrodes in electro discharge machining (EDM)

CoCrMo Alaşımının Toz Katkılı Elektrik Deşarj ile İşlenmesinde Malzeme Kaldırma ve Takım Aşınma Hızının Cevap Yüzeyi Modellemesi

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