METHOD FOR MANUFACTURING STEEL SHEET PROVIDED WITH ORGANIC COMPOSITE COATING FILM

PROBLEM TO BE SOLVED: To obtain a uniform surface appearance on the steel sheet provided with an organic composite coating film, when manufacturing it by forming an organic composite coating film comprising an underlayer formed through applying a liquid containing an oxide and phosphoric acid and/or...

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Bibliographische Detailangaben
Hauptverfasser:	OKAMOTO KOTARO, ANDO SATOSHI, NABE SHIGEKI
Format:	Patent
Sprache:	eng
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 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 LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY PERFORMING OPERATIONS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a uniform surface appearance on the steel sheet provided with an organic composite coating film, when manufacturing it by forming an organic composite coating film comprising an underlayer formed through applying a liquid containing an oxide and phosphoric acid and/or a phosphate compound, and an upper layer formed of a resin coating film thereon. SOLUTION: The method for manufacturing the steel sheet provided with the organic composite coating film comprises applying a treatment liquid containing phosphoric acid and/or a phosphate compound on a galvanized steel sheet or an aluminized steel sheet lower than 50°C, then drying and heating it to form a coating film containing phosphoric acid with a thickness of 0.005 to 4 μm, and forming an organic coating film having a thickness of 0.1 to 5 μm thereon. COPYRIGHT: (C)2004,JPO&NCIPI