Study of workpiece vibration in powder-suspended dielectric fluid in micro-EDM processes

Gunawan Setia Prihandana, Muslim Mahardika, Mohd Hamdi, Yoke San Wong, Norihisa Miki, Kimiyuki Mitsui

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

In micro-EDM (electrical discharge machining), improper removal of debris causes short-circuiting between a tool electrode and a workpiece and in turn, prevents continuous machining process. Therefore, a remarkably longer period of time is required to fabricate a through hole than that would be required when no short-circuiting took place. In order to solve this problem, the dielectric fluid is immersed with graphite nano powders to reduce machining time and improve surface quality due to the less frequent of arcing between the tool electrode and the workpiece. However, excess powders become debris and subsequently deteriorate the efficiency of machining. To fully exploit the effects of the suspended powders, we introduced vibration of the workpiece in order to remove the debris in the small gap between the workpiece and electrode efficiently. The experimental results showed that combination of these techniques improved machining stability, assured continuous machining processes, and significant reduction of the machining time. Reduction of the machining time and the surface roughness of the workpiece after machining were investigated with respect to the powder concentrations when the workpiece was vibrated at 1000 Hz.

Original languageEnglish
Pages (from-to)1817-1822
Number of pages6
JournalInternational Journal of Precision Engineering and Manufacturing
Volume14
Issue number10
DOIs
Publication statusPublished - 2013 Oct

Fingerprint

Machining
Powders
Fluids
Debris
Electrodes
Electric discharge machining
Surface properties
Graphite
Surface roughness

Keywords

  • Machining time
  • Micro-electric discharge machining
  • Powder suspension
  • Surface roughness
  • Workpiece vibration

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Mechanical Engineering

Cite this

Study of workpiece vibration in powder-suspended dielectric fluid in micro-EDM processes. / Prihandana, Gunawan Setia; Mahardika, Muslim; Hamdi, Mohd; Wong, Yoke San; Miki, Norihisa; Mitsui, Kimiyuki.

In: International Journal of Precision Engineering and Manufacturing, Vol. 14, No. 10, 10.2013, p. 1817-1822.

Research output: Contribution to journalArticle

Prihandana, Gunawan Setia ; Mahardika, Muslim ; Hamdi, Mohd ; Wong, Yoke San ; Miki, Norihisa ; Mitsui, Kimiyuki. / Study of workpiece vibration in powder-suspended dielectric fluid in micro-EDM processes. In: International Journal of Precision Engineering and Manufacturing. 2013 ; Vol. 14, No. 10. pp. 1817-1822.
@article{5bf956c9ffb14385a6f764c5f7b2ccf2,
title = "Study of workpiece vibration in powder-suspended dielectric fluid in micro-EDM processes",
abstract = "In micro-EDM (electrical discharge machining), improper removal of debris causes short-circuiting between a tool electrode and a workpiece and in turn, prevents continuous machining process. Therefore, a remarkably longer period of time is required to fabricate a through hole than that would be required when no short-circuiting took place. In order to solve this problem, the dielectric fluid is immersed with graphite nano powders to reduce machining time and improve surface quality due to the less frequent of arcing between the tool electrode and the workpiece. However, excess powders become debris and subsequently deteriorate the efficiency of machining. To fully exploit the effects of the suspended powders, we introduced vibration of the workpiece in order to remove the debris in the small gap between the workpiece and electrode efficiently. The experimental results showed that combination of these techniques improved machining stability, assured continuous machining processes, and significant reduction of the machining time. Reduction of the machining time and the surface roughness of the workpiece after machining were investigated with respect to the powder concentrations when the workpiece was vibrated at 1000 Hz.",
keywords = "Machining time, Micro-electric discharge machining, Powder suspension, Surface roughness, Workpiece vibration",
author = "Prihandana, {Gunawan Setia} and Muslim Mahardika and Mohd Hamdi and Wong, {Yoke San} and Norihisa Miki and Kimiyuki Mitsui",
year = "2013",
month = "10",
doi = "10.1007/s12541-013-0243-3",
language = "English",
volume = "14",
pages = "1817--1822",
journal = "International Journal of Precision Engineering and Manufacturing",
issn = "2234-7593",
publisher = "Korean Society of Precision Engineering",
number = "10",

}

TY - JOUR

T1 - Study of workpiece vibration in powder-suspended dielectric fluid in micro-EDM processes

AU - Prihandana, Gunawan Setia

AU - Mahardika, Muslim

AU - Hamdi, Mohd

AU - Wong, Yoke San

AU - Miki, Norihisa

AU - Mitsui, Kimiyuki

PY - 2013/10

Y1 - 2013/10

N2 - In micro-EDM (electrical discharge machining), improper removal of debris causes short-circuiting between a tool electrode and a workpiece and in turn, prevents continuous machining process. Therefore, a remarkably longer period of time is required to fabricate a through hole than that would be required when no short-circuiting took place. In order to solve this problem, the dielectric fluid is immersed with graphite nano powders to reduce machining time and improve surface quality due to the less frequent of arcing between the tool electrode and the workpiece. However, excess powders become debris and subsequently deteriorate the efficiency of machining. To fully exploit the effects of the suspended powders, we introduced vibration of the workpiece in order to remove the debris in the small gap between the workpiece and electrode efficiently. The experimental results showed that combination of these techniques improved machining stability, assured continuous machining processes, and significant reduction of the machining time. Reduction of the machining time and the surface roughness of the workpiece after machining were investigated with respect to the powder concentrations when the workpiece was vibrated at 1000 Hz.

AB - In micro-EDM (electrical discharge machining), improper removal of debris causes short-circuiting between a tool electrode and a workpiece and in turn, prevents continuous machining process. Therefore, a remarkably longer period of time is required to fabricate a through hole than that would be required when no short-circuiting took place. In order to solve this problem, the dielectric fluid is immersed with graphite nano powders to reduce machining time and improve surface quality due to the less frequent of arcing between the tool electrode and the workpiece. However, excess powders become debris and subsequently deteriorate the efficiency of machining. To fully exploit the effects of the suspended powders, we introduced vibration of the workpiece in order to remove the debris in the small gap between the workpiece and electrode efficiently. The experimental results showed that combination of these techniques improved machining stability, assured continuous machining processes, and significant reduction of the machining time. Reduction of the machining time and the surface roughness of the workpiece after machining were investigated with respect to the powder concentrations when the workpiece was vibrated at 1000 Hz.

KW - Machining time

KW - Micro-electric discharge machining

KW - Powder suspension

KW - Surface roughness

KW - Workpiece vibration

UR - http://www.scopus.com/inward/record.url?scp=84885049650&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84885049650&partnerID=8YFLogxK

U2 - 10.1007/s12541-013-0243-3

DO - 10.1007/s12541-013-0243-3

M3 - Article

AN - SCOPUS:84885049650

VL - 14

SP - 1817

EP - 1822

JO - International Journal of Precision Engineering and Manufacturing

JF - International Journal of Precision Engineering and Manufacturing

SN - 2234-7593

IS - 10

ER -