FIELD: anti-corrosion coating.
SUBSTANCE: applying protective and decorative coatings For decorating and protecting against corrosion of steel parts and products; applying an anti-corrosion coating to steel products. For electrolysis, an electrolyte is used with a concentration of components, g/l: sodium hydrogen phosphate 100-150, potassium hexacyanoferrate (II) 2-4, potassium hexacyanoferrate (III) 8-10 and tannin 6-8. Electrolysis is carried out for 1-2 min at an alternating current density of industrial frequency of 0.5-2.0 A/cm2 and a temperature of 18-40°C. Then turn off the alternating current of industrial frequency and hold in the specified electrolyte for 5 minutes.
EFFECT: increased protective anticorrosive ability of the steel products coating, including complex configuration.
1 cl, 2 ex
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