FIELD: metallurgy.
SUBSTANCE: procedure consists in base degreasing and etching, and in electrolytic application of lead-tin coating. Also chromium oxides are additionally settled at density of current 20-40 A/dcm2 at temperature 30-35° C from ecologically pure electrolyte of the following composition, g/l: chromium sulphate (Cr3+) 25-100, ammonia sulphate 30-110, urea 10-50.
EFFECT: raised corrosion resistance of electrically leaded rolled metal and increased adhesion of paintwork material to its surface.
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