Journal
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME
Volume 141, Issue 1, Pages -Publisher
ASME
DOI: 10.1115/1.4041778
Keywords
titanium alloy; turning; nose wear; high-pressure coolant supply; coolant properties; triethanolamine-based coolant
Funding
- Rolls-Royce plc
- Seco Tools
- Brazilian funding agency CNPq
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior-Brasil (CAPES) [001]
- FAPEMIG [PPM-00265-13]
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This work presents the evaluation of three commercially available coolant grades (dicyclohexylamine-based coolant, a triethanolamine-based coolant, and an ester-based coolant) when machining Ti-6Al-4V alloy with high-pressure coolant delivery. The evaluations were based on tool life, tool failure modes, surface integrity, and chip formation. The dicyclohexylamine-based coolant was the more effective coolant when machining at the highest pressure of 20.3MPa due to its stability at elevated temperature, whereas the triethanolamine-based coolant performed effectively at a pressure of 11MPa due to its low surface tension properties. Deterioration of the ester-based coolant was found in almost all coolant pressures due to its low resistance to oxidation. Surfaces generated when machining with all coolants grades were generally acceptable with negligible physical damage.
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