COATED STEEL HAVING CHEMICALLY TREATED COATING, AND MANUFACTURING METHOD THEREOF

To provide coated steel having a coating type chemically treated coating layer containing no chromic acid that shows high adhesiveness and cathode peeling resistance when combined with an organic resin coating of an anticorrosive powder epoxy resin coating or a triple-layer polyolefin resin coating....

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Bibliographische Detailangaben
Hauptverfasser:	KINOSHITA YASUHIRO, YOSHIZAKI NOBUKI, TENMAYA MOTOHIRO
Format:	Patent
Sprache:	eng ; jpn
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 LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY PERFORMING OPERATIONS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING
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Beschreibung
Zusammenfassung:	To provide coated steel having a coating type chemically treated coating layer containing no chromic acid that shows high adhesiveness and cathode peeling resistance when combined with an organic resin coating of an anticorrosive powder epoxy resin coating or a triple-layer polyolefin resin coating.SOLUTION: Steel of the invention has a chemically treated coating to be used when laminating an adhesive and a polyolefin resin and a powder epoxy resin coating or a powder epoxy resin required to have high anticorrosiveness and adhesiveness as a primer. An oxide coating layer 2 containing zirconium or titanium is formed as a surface treatment layer on the surface of the steel 1. A porous coating 3 capable of enhancing adhesiveness by being impregnated with a paint applied to its upper surface is formed on the oxide coating layer 2, the impregnation being promoted by a structure of combination of an iron oxide and fine particles mainly composed of linear particulate silica.SELECTED DRAWING: Figure 1 【課題】クロム酸を含まない塗布型の化成処理被膜層を有する塗装鋼材であって、有機樹脂塗装として防食性の高い粉体エポキシ樹脂塗料、あるいは３層ポリオレフィン樹脂塗装と組み合わせた場合に、高い密着性と耐陰極剥離性を提供する。【解決手段】本発明の鋼材は、高い防食性と密着性が要求される粉体エポキシ樹脂塗装、あるいは粉体エポキシ樹脂をプライマーとして、接着剤、ポリオレフィン樹脂を積層塗装する際に使用される化成処理被膜を有する鋼材であって、鋼材１表面に下地処理層としてジルコニウムあるいはチタンを含む酸化物被膜層２を形成し、その上に鉄酸化物と線状の微粒子シリカを主とする微粒子が連結した構造によって上部に塗装する塗料が含浸して密着性を強化することが可能な多孔状の被膜層３を形成したものである。【選択図】図１