Aqueous acidic lubricant composition and method for coating meta

Metal treatment – Compositions – Heat treating

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148 615Z, 252 495, 252 498, 252 499, C23F 710

Patent

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042895464

ABSTRACT:
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 concentrate which is adapted to be diluted with water, if desired, to produce an aqueous acidic operating bath containing 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 aqueous soluble organic corrosion inhibiting agent. The coating composition may further optionally contain a controlled amount of heavy metal cations for activating the coating bath. The coating composition is applied to a clean metal surface such as by flooding, immersion, spraying, or the like, at temperatures from ambient up to about 200.degree. F. for a period of time sufficient to effect a desired coating magnitude whereafter the parts are dried, preferably at elevated temperatures before forming.

REFERENCES:
patent: 2840498 (1958-06-01), Logue et al.
patent: 2850418 (1958-09-01), Otto et al.
patent: 3525651 (1970-08-01), Smith

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