| abstract |
(57) [Summary] [PROBLEMS] Instead of a lubrication system combining a conversion coating treatment such as a phosphate treatment or an oxalate treatment with a reactive soap treatment, a water-based lubrication system having high lubricity. It is possible to process in one process without any environmental problems as described above, and it is easy to peel off the film. Furthermore, even if a large amount of the processing material is treated by the immersion method, there is no decrease in seizure due to uneven adhesion. And a water-based lubricant for cold plastic working of metal materials. (A) a water-soluble inorganic salt; (B) a solid lubricant; (C) at least one oil component selected from mineral oil, animal and vegetable fats and oils, and (D) a surfactant and (E) water. Weight ratio of solid lubricant to water-soluble inorganic salt (B / A) is 0.05 / 1 to 2/1, and the weight ratio of the oil component to the total amount of the water-soluble inorganic salt and the solid lubricant (C / (A + B)) is 0.05 / 1 to 1/1, wherein a solid lubricant and an oil component are uniformly dispersed and emulsified, respectively, and an aqueous lubricant for cold plastic working of metal. |