Design and evaluation of an atomization-based cutting fluid spray system in turning of titanium alloy

Chandra Nath, Shiv G. Kapoor, Richard E. Devor, Anil K. Srivastava, Jon Iverson

Research output: Contribution to journalArticlepeer-review

Abstract

Tool life has been a vital issue in machining titanium alloys. Recently, an atomization-based cutting fluid (ACF) application has been found to be an effective approach for cooling and lubrication in micromachining operations. In this study, an ACF spray system is developed for macro-scale turning of Ti-6Al-4V. The spray system is designed to minimize interaction between the fluid droplets, and the gas nozzle to control the divergence of the fluid droplets. Experiments are conducted to study the effect of five specific ACF spray parameters including fluid flow rate, spray distance, impingement angle, and type and pressure level of the droplet carrier gas on cutting forces, tool life, and chip characteristics. It has been observed that the combination of lower pressure (150 psi) air-mixed CO 2 with a higher flow rate (20 ml/min) and a larger spray distance (35 mm) produces a significantly longer tool life and broken chips. The results also reveal that the ACF spray system can extend tool life up to 40-50% over flood cooling.

Original languageEnglish (US)
Pages (from-to)452-459
Number of pages8
JournalJournal of Manufacturing Processes
Volume14
Issue number4
DOIs
StatePublished - Oct 2012

Keywords

  • Atomized fluid droplets
  • Chip formation
  • Cooling and lubrication
  • Spray parameters
  • Titanium machining
  • Tool life

ASJC Scopus subject areas

  • Strategy and Management
  • Management Science and Operations Research
  • Industrial and Manufacturing Engineering

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