Precise Internal Turning of Axi-symmetric SS316 Thin-walled Component: Experimentations on ED-Machining Setup

Singh, Arvind Kumar; Malik, Anup; Mali, Harlal Singh; Shekhawat, M. S.

doi:10.1080/2374068x.2023.2189567

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…SS-316 stainless steel is a widely popular material because of its many applications in several fields namely, fabrication and welding, automotive industries, pharmaceutical and medical, machine tool, chemical and petrochemical industries and aerospace, etc. 1 including construction and infrastructure industry. 2 The SS-316 has unique properties like corrosion resistance and thermal resistance including excellent strength and toughness at cryogenic temperatures, and impressive hardness property 3 which provide difficulty for conventional machining.…”

Section: Introductionmentioning

confidence: 99%

Comparative performance investigation and sustainability assessment in electrical discharge machining of SS316 using different dielectrics

Sethy,

Rana,

Sharma

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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In electrical discharge machining, the material removal phenomenon is heavily influenced by the breakdown strength of the dielectric fluid and the inter-electrode gap monitoring. This innovative research addresses a comparative performance evaluation and sustainability assessment between biodegradable palm oil and conventional EDM oil during machining of stainless steel (SS-316) using copper electrode. The cutting performance is investigated by comprehensive result analysis of various machinability aspects including material removal rate, surface integrity, tool wear rate, radial overcut of machined components. According to the findings, machining with palm oil dielectric outperformed the usual EDM oil with regards to improved material removal, surface morphology and finish, increased machined surface hardness with minimum surface crack density and hole overcut. Pyrolysis of conventional EDM dielectric oil leads to deposition of thin film carbon on bottom surface of the copper electrode which prevents the quick tool wear due to its higher breakdown voltage. The total machining cost expenditure per component under palm oil (INR383) is reduced by 11% than expenditure in traditional EDM oil (INR426). Compared to EDM oil, machining under biodegradable palm oil as dielectric fluid is better socio-economical viable and environmental conscious to enhance sustainability.

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Section: Introductionmentioning

confidence: 99%

Comparative performance investigation and sustainability assessment in electrical discharge machining of SS316 using different dielectrics

Sethy,

Rana,

Sharma

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Investigation of Die-Sinking EDM on SS316 Material with Various Tool Electrode for Enhanced Machining Performance—A Review

Verma,

Jain

2024

Springer Proceedings in Materials

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Monopulse-recognition based interelectrode state detection for self-adjustable micro EDM servo control

Cao,

Tong,

et al. 2024

Preprint

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In micro-electrical discharge machining (micro-EDM), it is crucial to maintain an optimal gap between tool electrode and workpiece for stable and continuous machining. Accurate and real-time state detection is a prerequisite for the implementation of gap servo control. A novel monopulse-recognition based state detection method for self-adjustable servo control is proposed. This detection method discriminates pulse types with high precision by utilizing unique monopulse characteristics. The detection circuit avoids capacitive filtering but integrates multi-level nanosecond comparators to overcome the trade-off between accuracy and real-time performance caused by improper time constant RC in conventional average voltage detection method. The self-adjustable servo control iteratively refines the servo speed to approach the optimal value, forming a macroscopic stair-stepping pattern complemented by microscopic fine-tuning self-adjustment. Orthogonal experiments of micro-hole machining demonstrate that it achieves a significant 42% improvement in machining efficiency with a 3% increase in the effective discharge ratio compared to conventional threshold servo control. Applying to micro 3D structure scanning, a precise and robust electrode wear model considering varying wear rates at different scanning positions is established, forming an effective-pulse based depth-constrained algorithm insensitive to scanning speed. It effectively suppresses the recurrence of crater and bump errors on the machined surface.

show abstract

Precise Internal Turning of Axi-symmetric SS316 Thin-walled Component: Experimentations on ED-Machining Setup

Cited by 3 publications

References 24 publications

Comparative performance investigation and sustainability assessment in electrical discharge machining of SS316 using different dielectrics

Comparative performance investigation and sustainability assessment in electrical discharge machining of SS316 using different dielectrics

Investigation of Die-Sinking EDM on SS316 Material with Various Tool Electrode for Enhanced Machining Performance—A Review

Monopulse-recognition based interelectrode state detection for self-adjustable micro EDM servo control

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