Abstract
Cutting fluids play a significant role in the machining of titanium alloys due to its lubricating and cooling effects. This study was performed to clarify the specifications of a water-based cutting fluid required for titanium alloy machining and develop new cutting fluids that can achieve high performance machining of titanium alloys. A series of experiments focusing on the oil droplet behaviors at the tool/workpiece interface showed that the oil droplet diameter and the carbon number of oily additives have significant impacts on the lubricity of water-based cutting fluids. New water-based cutting fluids have been developed based on the above investigations, which successfully improve cutting performance in high-speed machining of Ti-6Al-4V.
