| 摘要 |
PROBLEM TO BE SOLVED: To provide an aqueous lubricating coating agent for metal materials, capable of achieving excellent lubricity even when plastic processing, press molding, etc., are performed, simultaneously solving operability (process reduction, sludge reduction, etc.) and simultaneously performing chemical conversion treatment and lubricating treatment.SOLUTION: The aqueous lubricating coating agent for metal materials is obtained by mixing at least one kind of lubricating components except a black based solid lubricant; and at least one kind of chemical conversion components selected from a group consisting of a phosphoric acid compound, an oxalic acid compound, a molybdic acid compound, a zirconium compound and a titanium compound and has a pH of 2.0-6.5. The concentration of the lubricating component is 5 mass% or more in a mass ratio to the total solid mass in the lubricating coating agent, and the concentration of the chemical conversion component is 0.3-8 mass% when the total mass of the lubricating coating agent is 100 mass%.SELECTED DRAWING: None |
