EFFECT OF CUTTING PARAMETERS ON THE DRILLING OF AlSi<sub>7</sub> METALLIC FOAMS

Uzun G., Gökmen U., Çinici H., Turker M.

MATERIALI IN TEHNOLOGIJE, sa.1, ss.19-24, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2017
  • Doi Numarası: 10.17222/mit.2015.106
  • Dergi Adı: MATERIALI IN TEHNOLOGIJE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.19-24
  • Anahtar Kelimeler: foams, cutting, machining, tooling, HOLE QUALITY, DEFORMATION, ALUMINUM, FORCES
  • Gazi Üniversitesi Adresli: Evet

Özet

In this study, the behaviors of Al matrix metallic foams, produced by the powder-metallurgy method, against the hole-drilling operation were examined. The stirred Al, 7 % Si and 1 % TiH2 powders were pressed in a mould under uniaxial pressure (600 MPa) and then deformed, and in this way foamable block samples were obtained. The block samples were subjected to a foaming process at 710 degrees C. The obtained samples were drilled at different cutting speeds (10, 30, 50, 70) mm/min and feed rates (0.15, 0.225, 0.30) mm/r with drill tips of different diameters (4, 5 and 6) mm. It was observed that the foam affected the chip breakings and chip adhesions increased in proportion to the cutting speed. In the deviation from circularity, the feed rate turned out to be a more effective parameter than the cutting speed.