Published January 1, 2016
| Version v1
Conference paper
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High-Throughput Dry and Minimum Quantity Lubrication Drilling of Compacted Graphite Iron
- 1. Ford Motor Co, Adv Mfg Technol Dev, 36200 Plymouth Rd, Livonia, MI 48150 USA
- 2. Istanbul Tech Univ, Dept Mech Engn, Inonu Caddesi 65, TR-34437 Istanbul, Turkey
- 3. Xi An Jiao Tong Univ, Dept Mech Engn, 28 Xianning West Rd, Xian 710049, Shaanxi, Peoples R China
- 4. Univ Michigan, Dept Mech Engn, 2350 Hayward St, Ann Arbor, MI 48109 USA
Description
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
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