MANUFACTURING METHOD OF GALVANIZED STEEL SHEET

PURPOSE: A method for manufacturing a galvanized steel sheet having superior adhesion of plated metal and corrosion resistance is provided. CONSTITUTION: The method for manufacturing the galvanized steel sheet includes: (i) heating a steel strip under non-oxidative or reductive atmosphere of 420-720...

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Bibliographische Detailangaben
Hauptverfasser:	KIM, SANG HEON, KWAK, YEONG JIN, CHO, NOE HA
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	PURPOSE: A method for manufacturing a galvanized steel sheet having superior adhesion of plated metal and corrosion resistance is provided. CONSTITUTION: The method for manufacturing the galvanized steel sheet includes: (i) heating a steel strip under non-oxidative or reductive atmosphere of 420-720deg.C; (ii) fusing zinc powder with a particle size distribution 0.5 to 100μm in an amount of 1 to 500g/m¬2 per one side of the heated steel strip as passing the heated steel strip through a fluidizing table under non-oxidative or reductive atmosphere in the temperature range of ambient temperature to 420deg.C; (iii) right after zinc powder fusing on the steel strip, cooling the zinc powder-fused steel strip to 200-300deg.C; and (iv) temper rolling the cooled steel strip.