Study of Material Transfer Mechanism in Die Steels Using Powder Mixed Electric Discharge Machining

Batish, Ajay; Bhattacharya, Anirban; Singla, Vinod Kumar; Singh, Gurmail

doi:10.1080/10426914.2011.585498

Cited by 61 publications

(27 citation statements)

References 17 publications

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“…workpiece-electrode surface. Batish et al [39] investigated the mechanism of material transfer during EDM of three different die steel samples, thus confirming a reasonable deposition of tool-electrode material and powder particles on the EDMed surface. Gülcan et al [150] reported a substantial deposition of tool-electrode materials on the workpieceelectrode surface after AM-EDM.…”

Section: Am-edm As Potential Surface Treatment Technique For Biomedicmentioning

confidence: 99%

“…Addition of graphite powder and the surfactant to the dielectric fluid greatly reduced the thickness of the formed recast layer, thereby enhancing the biomedical performance of Ti-6Al-4V [38]. A reasonable transfer of material between the dielectric additives, electrodes materials, was observed during AM-EDM of die steels [39,40]. This paper critically reviewed the technological advancements of EDM and the current perspective of AM-EDM as a surface modification technique for orthopedic and dental applications.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

Aliyu

Rani

Ginta

et al. 2017

Advances in Materials Science and Engineering

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Surface treatment remained a key solution to numerous problems of synthetic hard tissues. The basic methods of implant surface modification include various physical and chemical deposition techniques. However, most of these techniques have several drawbacks such as excessive cost and surface cracks and require very high sintering temperature. Additive mixed-electric discharge machining (AM-EDM) is an emerging technology which simultaneously acts as a machining and surface modification technique. Aside from the mere molds, dies, and tool fabrication, AM-EDM is materializing to finishing of automobiles and aerospace, nuclear, and biomedical components, through the concept of material migrations. The mechanism of material transfer by AM-EDM resembles electrophoretic deposition, whereby the additives in the AM-EDM dielectric fluids are melted and migrate to the machined surface, forming a mirror-like finishing characterized by extremely hard, nanostructured, and nanoporous layers. These layers promote the bone in-growth and strengthen the cell adhesion. Implant shaping and surface treatment through AM-EDM are becoming a key research focus in recent years. This paper reports and summarizes the current advancement of AM-EDM as a potential tool for orthopedic and dental implant fabrication. Towards the end of this paper, the current challenges and future research trends are highlighted.

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Section: Am-edm As Potential Surface Treatment Technique For Biomedicmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

Aliyu

Rani

Ginta

et al. 2017

Advances in Materials Science and Engineering

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“…Copper electrode with graphite powder worked the best for HCHCr. All the obtained roughness values were above 1 μm Ra which indicate that although powder does have a significant effect on improving the surface properties [25], it may not be useful in achieving superior surface finish (less than 0.8 μm Ra) especially in the boundary conditions used in this experimental setup. Additional factors may need to be studied to improve the finish further.…”

Section: Finish Machining With Pmedm Processmentioning

confidence: 95%

Optimal parameter settings for rough and finish machining of die steels in powder-mixed EDM

Bhattacharya

Batish

Singh

et al. 2011

Int J Adv Manuf Technol

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The present study was undertaken to identify the appropriate parameter settings for rough and finish machined surface for EN31, H11, and high carbon high chromium (HCHCr) die steel materials in a powder-mixed electric discharge machining process. The effect of seven different process variables along with some of their interactions was evaluated using a dummy-treated experimental design and analysis of variance. Material removal rate (MRR), tool wear rate, and surface finish were measured after each trial and analyzed. The parameter settings for rough and finished machining operations were obtained. EN31 exhibited maximum MRR as compared to the other two materials at similar process settings. Copper (Cu) electrode with aluminum suspended in the dielectric maximized the MRR. Suspending powder in the dielectric resulted in surface modification. Graphite powder showed a lower MRR but improved the surface finish. HCHCr require higher current and pulse on settings for initiating a machining cut and works best in combination with tungsten-Cu electrode and graphite powder for improved finish. The MRR for H11 is lower than EN31 but significantly higher than HCHCr under same process conditions.

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“…Batish et al machined EN31, H11, and high carbon high chromium die steel (HCHCr) materials using PMEDM with graphite and aluminum powder mixed in dielectric. It was found that graphite powder is most suitable additive for improving the microhardness of the selected material [8]. Bhattacharya et al reported results for global optimization using analytic hierarchy technique [9].…”

Section: Introductionmentioning

confidence: 98%

Study of Surface Properties in Particulate-Reinforced Metal Matrix Composites (MMCs) Using Powder-Mixed Electrical Discharge Machining (EDM)

Sidhu

Batish

Kumar

2014

Materials and Manufacturing Processes

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121

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This article investigates the surface modification of three different types of metal matrix composites (MMCs) 65vol%SiC/A356.2, 10vol% SiC-5vol% quartz/Al, and 30vol%SiC/A359 using powder-mixed electrical discharge machining (PMEDM) process. Microhardness and surface integrity were evaluated after each trial, and contributing process parameters were identified. It was found that microhardness increased primarily with increase in the density of reinforced particles in the matrix. Each workpiece was examined by X-ray diffraction (XRD) followed by scanning electron microscope (SEM) for surface integrity and material deposition. The results show the significant amount of metal transfer from the copper electrode as compared to graphite.

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Study of Material Transfer Mechanism in Die Steels Using Powder Mixed Electric Discharge Machining

Cited by 61 publications

References 17 publications

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

Optimal parameter settings for rough and finish machining of die steels in powder-mixed EDM

Study of Surface Properties in Particulate-Reinforced Metal Matrix Composites (MMCs) Using Powder-Mixed Electrical Discharge Machining (EDM)

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