• More difficult alloys are being used in many machining processes and machining processes are becoming more complex, both requiring better lubrication
• Water-extendible fluids require a unique waste disposal process since the water is typically contaminated with metals
• Use of tri-purpose fluids for machining, hydraulic/waylube and stock feed minimize inventory requirements
Other advantages to using neat oils in the machining process are higher tool speeds and stock feeds, longer drain intervals, consumption reduction and overall fluid-related cost reductions. Traditional base fluids for industrial neat oils are napthenic and paraffinic petroleum fluids. A growing alternative to petroleum-based fluids are vegetable-based fluids and synthetic esters including canola, soybean, rapeseed, sunflower, palm and others. These fluids are not new, but are increasing in use due to airborne mist being safer than petroleum-based oils, availability, environmental impact and pricing coming more into line with traditional fluids.