METHOD FOR MANUFACTURING HOT-DIP AL-ZN ALLOY PLATED STEEL STRIP

PROBLEM TO BE SOLVED: To provide a method for consistently manufacturing a hot-dip Al-Zn alloy plated steel strip which is provided with a plating film containing Al of 20-95 mass % and has excellent elongation characteristic and attractive appearance of a plated surface. SOLUTION: In order to impro...

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Bibliographische Detailangaben
Hauptverfasser:	OI TOSHIHIKO, TACHIBANA KOUJIYU, FUKUSHIMA YUICHI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS 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 FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for consistently manufacturing a hot-dip Al-Zn alloy plated steel strip which is provided with a plating film containing Al of 20-95 mass % and has excellent elongation characteristic and attractive appearance of a plated surface. SOLUTION: In order to improve the elongation characteristic by heating a hot-dip Al-Zn alloy plated steel strip after plating metal is solidified, the plated steel strip is continuously heated to the temperature of below 30°C immediately before a coiling device of a plating line, and coiled with the coiling-up tension of ≤ 3.0 kg/mm2. Then, the temperature is kept by the accumulated heat in the coil, or holding it at a temperature below 300°C in a heating furnace. COPYRIGHT: (C)2004,JPO