Precision Electrodischarge Machining of High Silicon P/M Aluminium Alloys for Electronic Application

  • D. Biało
  • J. Perończyk
  • J. Tomasik
  • R. Konarski
Conference paper


High silicon content aluminium alloys are preferred in electronic applications when low coefficient of thermal expansion and high thermal conductivity of material are require i.e. in housings for electronic packaging.

This material is difficult to machine due to the large volume fraction of hard Si particles dispersed in relatively soft aluminium matrix.

Electrodischarge machining (EDM) becomes very promising alternative to the traditional machining methods.

In the present study aluminium alloys with 6–40% Si particles was manufactured by powder metallurgy (P/M) route. During EDM holes of 0,4mm diameter were drilled. After EDM the following parameters were determined: drilling speed Vd, surface roughness Ra, oversize of the hole drilled Δ. Above mentioned parameters were correlated with EDM parameters.


Aluminium Alloy Electronic Packaging Large Volume Fraction High Silicon Drilling Speed 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • D. Biało
    • 1
  • J. Perończyk
    • 1
  • J. Tomasik
    • 2
  • R. Konarski
    • 1
  1. 1.Institute of Precision and Biomedical EngineeringWarsaw University of TechnologyWarsawPoland
  2. 2.Institute of Metrology and Measurement SystemsWarsaw University of TechnologyWarsawPoland

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