Abstract
The use of cryogenic coolants has emerged as an environmentally conscious alternative to emulsion coolant options. Cryogenic media can be delivered with a variety of methods to the cutting edge and they can be used in combination with other traditional coolant options such as Minimum Quantity Lubrication (MQL) and compressed air cooling in order to aid dissipation of heat generated in the cutting zone and maximize the lubrication of the cutting edge and thus prolong tool life. This study focuses on the investigation of tool life when milling aerospace grade titanium (Ti-6Al-4V) under different coolant delivery options. Tool wear progression was recorded for the following coolant options: cryogenic CO2, emulsion flood cooling, dry machining, cryogenic CO2 combined with air or MQL as well as MQL alone.
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