| 摘要 |
PROBLEM TO BE SOLVED: To obtain an aqueous lubricant for cold plastic working of a metallic material as an aqueous system having high lubricity without inducing an environmental problem in comparison with a former lubricating system combining a chemical film treatment such as a phosphate treatment to an oxalate treatment with a reaction-type soap treatment, capable of treating in one process, and easily peeling a film, and further not inducing lowering of scorching property caused by attaching unevenness even when treating large quantities of processing materials by a dipping method. SOLUTION: This aqueous lubricant for cold plastic working of a metallic material in which a solid lubricant and an oil component and respectively uniformly dispersed and emulsified is composed of (A) a water-soluble inorganic salt, (B) a solid lubricant, (C) at least one kind of oil component selected from a mineral oil, an oil and fat of an animal or a plant, (D) a surfactant and (E) water, and has a weight ratio of the solid lubricant to the water-soluble inorganic salt (B/A) of (0.05/1)-(2/1) and a weight ratio of the oil component to the total amount of the water-soluble inorganic salt and the solid lubricant C/(A+B)} of (0.05/1)-(1/1). |
