METHOD OF ELECTROLYTIC TIN-PLATING OF STEEL STRIPS

FIELD: electroplating of continuously moving strip steel, more specifically, methods of electrolytic tin-plating. SUBSTANCE: the offered method includes deposition of the first layer of tin with simultaneous cleaning and pickling of strip. Then, the second tin layer is deposited with subsequent fini...

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Main Authors PARAMONOV V.A, KUZNETSOVA L.E, NOSOV S.K, STARIKOV A.I, DOBRONRAVOV A.I, RASHNIKOV V.F, MELENT'EV JU.N, SHAPOSHNIKOV V.V, CHERKASSKIJ R.I
Format Patent
LanguageEnglish
Russian
Published 27.05.1998
Edition6
Subjects
APPARATUS THEREFOR
CHEMISTRY
ELECTROFORMING
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
METALLURGY
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS
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Summary:FIELD: electroplating of continuously moving strip steel, more specifically, methods of electrolytic tin-plating. SUBSTANCE: the offered method includes deposition of the first layer of tin with simultaneous cleaning and pickling of strip. Then, the second tin layer is deposited with subsequent finishing of tin surface layer. The first tin layer is deposited with thickness h1 = 0.05-0.1 mcm in electrolyte with tin content Sn = 5.5-7.2 g/l and tin current efficiency of 25-50%, and value of cathode current density is determined in compliance with the following equation Dk = 1.19v + 12.6, where Dk is cathode current density and v is tin-plating rate. EFFECT: higher and stabilized corrosion resistance of tin-plate. 2 dwgo
Bibliography:Application Number: RU19970101948