Application of new tool material for electrical discharge machining (EDM)

Khanra, Asit Kumar; Pathak, L C; Godkhindi, M. M.

doi:10.1007/s12034-009-0058-0

Cited by 24 publications

(11 citation statements)

References 9 publications

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“…They claimed that high sintering pressure responsible for the higher material removal while lower pressure leads to easily drop-out of the Cu and Cr particles from the electrode material due to their weak bonding strength. The performance of the ZrB 2 /Cu composites as an EDM electrode has been reported by Khanra et al [48,49]. They identified that composite tool with 40% of Cooper electrode gives higher material removal and lower tool wear as compared to the Copper electrode with some loss in the surface quality as shown in the Fig.…”

Section: A Research In Composites Tool Materialsmentioning

confidence: 65%

Recent Research Trends in Tool Electrode of Electrical Discharge Machining: A Review

2016

Arimpie - 2016

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-Electrical Discharge Machining (EDM) is a thermo-electrical based non-contact material removal process for machining of the electrically conductive difficult-to-machine materials. The machinability of the EDM process is not affected by mechanical and physical properties of the workpiece materials. Even though, its performances are highly affected by the tool materials and their designs. Most of the research papers refer to enhance the productivity of the EDM process without considering the effect of the parameters related to the tool electrodes. Generally, the tool wear is the well known phenomenon of the EDM process that affects the plasma formation as well as surface quality and productivity. The aim of the present study is to summarize a report on the published works related to the tool electrodes materials, designs and their effect on the performances of the EDM process. Instead of this, the present paper also focuses to future research scope in the same field and discussed in the brief.

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Section: A Research In Composites Tool Materialsmentioning

confidence: 65%

Recent Research Trends in Tool Electrode of Electrical Discharge Machining: A Review

2016

Arimpie - 2016

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“…As mentioned earlier, the peak current is similar to the effect of the pulse-on time to the MRR. Since an increase in the peak current gives a rise to the single spark intensity, the more the heat energy transmitted into the workpiece, the more the material melted and vaporized from workpiece [24]. As shown in Figure 7(a), the MRR in EDM oil mixed with Al is higher than that in EDM oil.…”

Section: Differences In Machining Performancesmentioning

confidence: 97%

Comparison of Micro-EDM Characteristics of Inconel 706 between EDM Oil and an Al Powder-Mixed Dielectric

Wang

Zhang

2019

Advances in Materials Science and Engineering

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Inconel 706 is a newly developed aeronautical material that has corrosion resistance along with high mechanical strength. Conventional machining of Inconel 706 results in a poor surface finish and a low-dimensional accuracy. Hence, micro-EDM (electrical discharge machining) is utilized to machine Inconel 706. This work proposes a comparison of micro-EDM characteristics of Inconel 706 between EDM oil and an Al powder mixture. The effects of input parameters on the surface roughness, material removal rate, tool removal rate, and microstructures of the machined surfaces between EDM oil and EDM oil mixed with Al were investigated. It was clarified that micro-EDM with a certain amount of Al powder added to the EDM oil can attain a high MRR and better surface integrity. However, the TWR discharge gap was larger than that in the EDM oil. Furthermore, it was observed that more attachment of the workpiece was adhered to the top surface of the electrode in the EDM oil due to its unstable machining. It was explained that the MRR increases with an increase in the Al concentration and then tends to decline.

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“…Si 3 N 4 dopant boosted the sinterability via the formation of interfacial ZrC phase between the particles. Khanra [16] directly tried to develop the ZrB 2 -40 wt.% Cu composite by pressureless sintering at 1250 • C for EDM study. The composite shows more metal removal rate with lesser tool removal rate than conventional Cu tool.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and thermal stability of ZrB2 powder infiltrated by molten Cu and CuCr1Zr alloy

Beronská¹,

Opálek²,

Nagy³

et al. 2020

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Cu/ZrB2 and CuCr1Zr/ZrB2 composites were prepared by gas pressure infiltration technology. The ZrB2 powder was used as reinforcement. No interfacial reaction took place for Cu, or CuCr1Zr matrix as confirmed by transmission electron microscopy (TEM). The thermal stability of composites was very good, i.e. without any indication of possible disintegration. Composites exhibit high structural stability when subjected to 5 consecutive heating/cooling cycles to 800 • C. Maximums of relative elongations recorded for particular heating/cooling cycles slightly increased for Cu/ZrB2 composite and slightly decreased for CuCr1Zr/ZrB2 composite. However, the differences are negligible.

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Application of new tool material for electrical discharge machining (EDM)

Cited by 24 publications

References 9 publications

Recent Research Trends in Tool Electrode of Electrical Discharge Machining: A Review

Recent Research Trends in Tool Electrode of Electrical Discharge Machining: A Review

Comparison of Micro-EDM Characteristics of Inconel 706 between EDM Oil and an Al Powder-Mixed Dielectric

Microstructure and thermal stability of ZrB2 powder infiltrated by molten Cu and CuCr1Zr alloy

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