Aqueous acidic lubricant coating composition and method

Details Aqueous acidic lubricant coating composition and method Aqueous acidic lubricant coating composition and method

C - Chemistry, Metallurgy

23

C

253/82

C23C 22/08 (2006.01) C10M 173/02 (2006.01)

Patent

CA 1149371

Abstract of the Disclosure A composition and a method for applying a lubricant coating to clean metal surfaces prior to subjecting them to metal forming operations. The composition comprises a con- centrate which is adapted to be diluted with water, if desired, to produce an aqueous acidic operating bath con- taining a controlled effective amount of phosphate ions to form a phosphate coating on the clean metal surface in combination with an emulsified organic lubricant agent, an emulsifying agent and an iron chelating agent. The coating composition may further optionally contain a controlled amount of a corrosion inhibiting agent and heavy metal cations for activating the coating bath. The coating com- position is applied to a clean metal surface such as by flooding, immersion, spraying, or the like, at temperatures from ambient up to about 200°F for a period of time sufficient to effect a desired coating magnitude whereafter the parts are dried, preferably at elevated temperatures before forming. -27-

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