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Workpiece and electrode influence on micro-EDM drilling performance.

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Title: Workpiece and electrode influence on micro-EDM drilling performance.
Authors: D'Urso, G.1 durso@unibg.it, Merla, C.1 cristina.merla@unibg.it
Source: Precision Engineering. Oct2014, Vol. 38 Issue 4, p903-914. 12p.
Subjects: Micro-drilling, Workpieces, Electrodes, Electric metal-cutting, Geometry, Fabrication (Manufacturing), Drilling & boring
Abstract: In recent years, the need for products containing micro-features has shown a pronounced and steady growth in several fields of application. For the development of micro-holed devices, one of the most important technologies is micro-EDM (Electro Discharge Machining). Micro-EDM can be considered as an ideal process to obtain burr-free micron-size features with high aspect ratios. In particular, micro-EDM is a non-contact material removal process in which rapid electric spark discharges remove the material composing the workpiece by means of melting and vaporizing phenomena. The present work deals with the fabrication of micro holes using micro-EDM technology. The investigation focuses on the influence of different electrodes and workpiece materials on the process performance, expressed in terms of tool wear ratio. In particular, the influence of four different workpiece materials (stainless steel, titanium, magnesium and brass), three electrode materials (copper, brass and tungsten carbide) and two different electrode shapes (cylindrical and tubular) was investigated. Moreover, an analysis of the geometrical characteristics of the micro holes in terms of conicity and diametrical overcut was carried out. An influence of electrode geometries, electrode material and workpiece material on the final output was found. [ABSTRACT FROM AUTHOR]
Copyright of Precision Engineering is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 97254157
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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IllustrationInfo
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  Data: Workpiece and electrode influence on micro-EDM drilling performance.
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  Data: <searchLink fieldCode="AR" term="%22D'Urso%2C+G%2E%22">D'Urso, G.</searchLink><relatesTo>1</relatesTo><i> durso@unibg.it</i><br /><searchLink fieldCode="AR" term="%22Merla%2C+C%2E%22">Merla, C.</searchLink><relatesTo>1</relatesTo><i> cristina.merla@unibg.it</i>
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  Data: <searchLink fieldCode="JN" term="%22Precision+Engineering%22">Precision Engineering</searchLink>. Oct2014, Vol. 38 Issue 4, p903-914. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Micro-drilling%22">Micro-drilling</searchLink><br /><searchLink fieldCode="DE" term="%22Workpieces%22">Workpieces</searchLink><br /><searchLink fieldCode="DE" term="%22Electrodes%22">Electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+metal-cutting%22">Electric metal-cutting</searchLink><br /><searchLink fieldCode="DE" term="%22Geometry%22">Geometry</searchLink><br /><searchLink fieldCode="DE" term="%22Fabrication+%28Manufacturing%29%22">Fabrication (Manufacturing)</searchLink><br /><searchLink fieldCode="DE" term="%22Drilling+%26+boring%22">Drilling & boring</searchLink>
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  Data: In recent years, the need for products containing micro-features has shown a pronounced and steady growth in several fields of application. For the development of micro-holed devices, one of the most important technologies is micro-EDM (Electro Discharge Machining). Micro-EDM can be considered as an ideal process to obtain burr-free micron-size features with high aspect ratios. In particular, micro-EDM is a non-contact material removal process in which rapid electric spark discharges remove the material composing the workpiece by means of melting and vaporizing phenomena. The present work deals with the fabrication of micro holes using micro-EDM technology. The investigation focuses on the influence of different electrodes and workpiece materials on the process performance, expressed in terms of tool wear ratio. In particular, the influence of four different workpiece materials (stainless steel, titanium, magnesium and brass), three electrode materials (copper, brass and tungsten carbide) and two different electrode shapes (cylindrical and tubular) was investigated. Moreover, an analysis of the geometrical characteristics of the micro holes in terms of conicity and diametrical overcut was carried out. An influence of electrode geometries, electrode material and workpiece material on the final output was found. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Precision Engineering is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1016/j.precisioneng.2014.05.007
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 12
        StartPage: 903
    Subjects:
      – SubjectFull: Micro-drilling
        Type: general
      – SubjectFull: Workpieces
        Type: general
      – SubjectFull: Electrodes
        Type: general
      – SubjectFull: Electric metal-cutting
        Type: general
      – SubjectFull: Geometry
        Type: general
      – SubjectFull: Fabrication (Manufacturing)
        Type: general
      – SubjectFull: Drilling & boring
        Type: general
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      – TitleFull: Workpiece and electrode influence on micro-EDM drilling performance.
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            – D: 01
              M: 10
              Text: Oct2014
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              Y: 2014
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