U.S. shops discover oil: Synthetics deliver the performance of nature's best-and then some

摘要

Only a few years have passed since many U.S. cutting-tool shops converted from grinding with water-based emulsion fluids to running straight refined oils. However, switching from such refined mineral-based oil products, which typically start as crude oil, to 100% pure synthetics is happening much faster. The reason? Synthetics offer benefits above and beyond those of standard mineral-based oil products. For instance, synthetics reportedly provide lubricity levels 5× higher than those of mineral-based fluids and 10× those of water-emulsion coolants. They also evaporate 60% slower than mineral fluids, last practically forever, prevent bacteria build up, and eliminate cobalt/carbide leaching.