Single-spark analysis of removal phenomenon in magnetic field assisted dry EDM

P. Govindan; A. Gupta; Suhas S. Joshi; Ajay Malshe; K. P. Rajurkar

doi:10.1016/j.jmatprotec.2013.01.016

Single-spark analysis of removal phenomenon in magnetic field assisted dry EDM

P. Govindan, A. Gupta, Suhas S. Joshi, Ajay Malshe, K. P. Rajurkar

Mechanical & Materials Engineering

Research output: Contribution to journal › Article › peer-review

77 Scopus citations

Abstract

The increased MRR in magnetic field assisted dry EDM (by ∼130%) was attributed to several reasons including confinement of plasma due to Lorentz forces. The conjectures were investigated further by undertaking over 100 single-discharge, dry and liquid EDM trials, with and without magnetic fields, by varying current, voltage, magnetic field, pulse on-time and bi-pulse current. The magnetic field assistance increased the depth and reduced crater diameter by 80% in dry EDM; and reduced crater diameter marginally but significantly improved uniformity in the material erosion, in liquid EDM. The role of Lorentz forces in confining plasma and reduction in electron mean free path due to magnetic field, when modeled analytically, captured the experimental trends very well.

Original language	English (US)
Pages (from-to)	1048-1058
Number of pages	11
Journal	Journal of Materials Processing Technology
Volume	213
Issue number	7
DOIs	https://doi.org/10.1016/j.jmatprotec.2013.01.016
State	Published - 2013

Keywords

Crater radius
Dry EDM
Magnetic field
Single-discharge

ASJC Scopus subject areas

Ceramics and Composites
Computer Science Applications
Metals and Alloys
Industrial and Manufacturing Engineering

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10.1016/j.jmatprotec.2013.01.016

Cite this

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title = "Single-spark analysis of removal phenomenon in magnetic field assisted dry EDM",

abstract = "The increased MRR in magnetic field assisted dry EDM (by ∼130%) was attributed to several reasons including confinement of plasma due to Lorentz forces. The conjectures were investigated further by undertaking over 100 single-discharge, dry and liquid EDM trials, with and without magnetic fields, by varying current, voltage, magnetic field, pulse on-time and bi-pulse current. The magnetic field assistance increased the depth and reduced crater diameter by 80% in dry EDM; and reduced crater diameter marginally but significantly improved uniformity in the material erosion, in liquid EDM. The role of Lorentz forces in confining plasma and reduction in electron mean free path due to magnetic field, when modeled analytically, captured the experimental trends very well.",

keywords = "Crater radius, Dry EDM, Magnetic field, Single-discharge",

author = "P. Govindan and A. Gupta and Joshi, {Suhas S.} and Ajay Malshe and Rajurkar, {K. P.}",

note = "Funding Information: The authors are thankful for the financial support for this work from Department of Science and Technology, Government of India . The authors also wish to acknowledge the technical support from Electronica Machine Tools Limited, Pune (India) . ",

year = "2013",

doi = "10.1016/j.jmatprotec.2013.01.016",

language = "English (US)",

volume = "213",

pages = "1048--1058",

journal = "Journal of Materials Processing Technology",

issn = "0924-0136",

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number = "7",

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TY - JOUR

T1 - Single-spark analysis of removal phenomenon in magnetic field assisted dry EDM

AU - Govindan, P.

AU - Gupta, A.

AU - Joshi, Suhas S.

AU - Malshe, Ajay

AU - Rajurkar, K. P.

N1 - Funding Information: The authors are thankful for the financial support for this work from Department of Science and Technology, Government of India . The authors also wish to acknowledge the technical support from Electronica Machine Tools Limited, Pune (India) .

PY - 2013

Y1 - 2013

N2 - The increased MRR in magnetic field assisted dry EDM (by ∼130%) was attributed to several reasons including confinement of plasma due to Lorentz forces. The conjectures were investigated further by undertaking over 100 single-discharge, dry and liquid EDM trials, with and without magnetic fields, by varying current, voltage, magnetic field, pulse on-time and bi-pulse current. The magnetic field assistance increased the depth and reduced crater diameter by 80% in dry EDM; and reduced crater diameter marginally but significantly improved uniformity in the material erosion, in liquid EDM. The role of Lorentz forces in confining plasma and reduction in electron mean free path due to magnetic field, when modeled analytically, captured the experimental trends very well.

AB - The increased MRR in magnetic field assisted dry EDM (by ∼130%) was attributed to several reasons including confinement of plasma due to Lorentz forces. The conjectures were investigated further by undertaking over 100 single-discharge, dry and liquid EDM trials, with and without magnetic fields, by varying current, voltage, magnetic field, pulse on-time and bi-pulse current. The magnetic field assistance increased the depth and reduced crater diameter by 80% in dry EDM; and reduced crater diameter marginally but significantly improved uniformity in the material erosion, in liquid EDM. The role of Lorentz forces in confining plasma and reduction in electron mean free path due to magnetic field, when modeled analytically, captured the experimental trends very well.

KW - Crater radius

KW - Dry EDM

KW - Magnetic field

KW - Single-discharge

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DO - 10.1016/j.jmatprotec.2013.01.016

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VL - 213

SP - 1048

EP - 1058

JO - Journal of Materials Processing Technology

JF - Journal of Materials Processing Technology

IS - 7

ER -

Single-spark analysis of removal phenomenon in magnetic field assisted dry EDM

Abstract

Keywords

ASJC Scopus subject areas

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