OIL IN WATER EMULSION COMPRISING AT LEAST ONE LUBRICATING ADDITIVE

摘要

An emulsion used to lubricate the surface of a steel sheet, comprising an additive corresponding to one of the following formulae: (R1,2-O-)1,2-PSS-(CH2)n-COO-(CH2)m-CH3, (R1,2-O-)1,2-PSS-CH2- phi -O-H, (R1,2-O-)1,2-PSS-CH2- phi -O-(CH2)n,-COO-(CH2)m,-CH3, where PSS designates a dithiophosphate function. The naked sheets of steel that are treated with said emulsion have very good tribological properties even when the density of the emulsion thus applied is less than or equal to 1g/m<2> when dry. The invention enables dry-looking oiled sheets to be obtained, whereby no re-oiling is required before forming even by die stamping.