High-Throughput Dry and Minimum Quantity Lubrication Drilling of Compacted Graphite Iron


Kuzu A. T. , Wu W., Stephenson D. A. , Bakkal M. , Hong J., Shih A. J.

7th CIRP Conference on High Performance Cutting (HPC), Chemnitz, Almanya, 31 Mayıs - 02 Haziran 2016, cilt.46, ss.87-90 identifier identifier

  • Cilt numarası: 46
  • Doi Numarası: 10.1016/j.procir.2016.03.191
  • Basıldığı Şehir: Chemnitz
  • Basıldığı Ülke: Almanya
  • Sayfa Sayıları: ss.87-90

Özet

This research investigates the high-throughput drilling of the compacted graphite iron (CGI), a high strength, lightweight material for automotive powertrain applications, at 26.5 mm/s feed rate using 4 mm diameter coated carbide drill. The CGI drilling experiments show that maximum 1740, 3150 and 2948 holes were drilled in two repeated tests under the dry, dry with through-the-drill compressed air, and minimum quantity lubrication (MQL) conditions. The Joule-Thomson cooling effect due to expansion of high pressure air from holes at the drill tip and mechanical effect of chip formation and evacuation are studied. Results demonstrate that high-throughput sustainable dry drilling of CGI is technically feasible. (C) 2016 The Authors. Published by Elsevier B.V