3040 – 04 – Using Semi-Synthetic and Synthetic MWFs
Semi-synthetic MWF’s have about 5 to 30% of lubricant based oil that has been refined and 30 to 50% water that is present in the concentrate. This is then combined with 10 to 40% water. Semi-synthetic fluids grant good lubricity, coolant characteristics, rust resistance, and better sump life. They stay cleaner longer than soluble oils.
Synthetic MWF’s don’t have any petroleum oil but have detergent-like components with wetting action along with performance-enhancing additives. Synthetics are made so they could be diluted from 10 to 40% water. Synthetics have many advantages are not as susceptible to contamination, offering great rust control, better sump life, and the greatest heat reduction properties. These synthetic MWF’s are transparent giving the worker better sight of the work during metalworking.
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Oils have better sump life over synthetic lubricants.CorrectIncorrect