| abstract |
[PROBLEMS] To provide lubricity and seizure resistance equivalent to or higher than those of a chemical conversion treatment film containing phosphorus, and having excellent corrosion resistance and film adhesion even without containing phosphorus. To provide a water-soluble lubricant for plastic working capable of forming a good lubricating film. The water-soluble lubricant for non-phosphorus plastic processing of the present invention comprises an A component: an inorganic solid lubricant, a B component: a wax, and a C component: a water-soluble inorganic metal salt. The solid content mass ratio of the B component (A component / B component) is 0.1 to 5, and the solid content mass ratio of the C component to the total amount of the A component, the B component, and the C component (C component / (A component) + B component + C component)) is 1 to 30%. [Selection figure] None |