PREPARATION OF STEEL MATERIAL COATED WITH POLYOLEFIN RESIN POWDER BY FUSION BONDING

PURPOSE:To enhance corrosion resistance, by applying chemical forming treatment to the surface of a steel material after cleaning and fusing an adhesive polyolefin resin powder thereto through an adhesive. CONSTITUTION:Short blast treatment and pickling due to hydrochloric acid are applied to the fu...

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Bibliographische Detailangaben
Hauptverfasser:	IMAZU TSUKASA, MUKOHARA FUMINORI, KURISU TAKAO
Format:	Patent
Sprache:	eng
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To enhance corrosion resistance, by applying chemical forming treatment to the surface of a steel material after cleaning and fusing an adhesive polyolefin resin powder thereto through an adhesive. CONSTITUTION:Short blast treatment and pickling due to hydrochloric acid are applied to the fusing surface of a steel material composed of structural steel, high tensile steel or weather resistant steel to perform descaling treatment. Thereafter, chemical forming treatment such as phosphate or chromate treatment is applied to the steel material. After the steel material to which chemical forming treatment is applied is heated to 60-200 deg.C to be dried, an adhesive composed of a phenol resin or a phenoxy resin is applied to the steel material in a thickness of 10-100mum. Thereafter, an acid modified polyolefin resin powder is fused to the cured adhesive. The particle size of the powder is pref. 50-800mum. By this method, the steel material excellent in water resistance and release resistance is obtained.