| abstract |
A water-soluble metalworking lubricant comprising (A) at least one hydroxyl-fatty acid compound selected from among hydroxyl-fatty acids, polycondensates of hydroxyl-fatty acids, and products of dehydrative condensation of hydroxyl-fatty acids or polycondensates thereof with fatty acids, (B) a fatty acid having 8 to 20 carbon atoms, (C) at least one basic compound selected from among alkali metalhydroxides and alkanolamines, (D) a straight-chain olefin having 8 to 20 carbon atoms, and (E) a nonionic surfactant. The lubricant brings about excellent working performance in metalworking of not only nonferrous metals such as aluminum but also ferrous metals such as iron and steel, and exhibits excellent compatibility with adhesives. |