Method of coating the steel sheet for the scrubber of the ship

Provided is a method for coating a steel sheet for the exhaust gas purifying scrubber of a ship. The method comprises the steps of: preparing a carbon steel sheet; spray coating the surface of the carbon steel sheet by using a wire containing, by wt%, Mo: 5-20%, Cr: 5-20%, W: 1-5%, Co: 1-5%, Fe: 1-5...

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Bibliographische Detailangaben
Hauptverfasser:	JEONG YANG SEONG, RYU JEONG KOOK
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ADHESIVES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL PAINT OR INK REMOVERS 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 COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CORRECTING FLUIDS DIFFUSION TREATMENT OF METALLIC MATERIAL DYES FILLING PASTES INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES 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 USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Provided is a method for coating a steel sheet for the exhaust gas purifying scrubber of a ship. The method comprises the steps of: preparing a carbon steel sheet; spray coating the surface of the carbon steel sheet by using a wire containing, by wt%, Mo: 5-20%, Cr: 5-20%, W: 1-5%, Co: 1-5%, Fe: 1-5%, and Ni: 50-75 to form a spray-coated layer having a thickness of 200 to 400 μm and a surface roughness of Sa 2+1/2 or more; and coating the formed spray-coated layer with a fluorine-based resin having a viscosity of 7 to 14 seconds as a Ford cup viscosity and a molecular weight of 10,000 to 20,000 and then naturally curing the same to form a fluorine-based resin layer having a thickness of 150 to 250 μm. Therefore, the durability of the steel sheet can be increased. 선박 배기가스 정화 스크러버용 강판의 코팅방법이 제공된다. 본 발명의 강판 코팅방법은, 탄소강판을 마련하는 공정; 상기 탄소강판의 표면에, 중량%로, Mo: 5~20%, Cr: 5~20%, W: 1~5%, Co: 1~5%, Fe: 1~5%, Ni: 50~75%를 포함하는 와이어를 이용하여 용사코팅함으로써 200~400㎛ 두께를 가지며 Sa 2+1/2 이상 표면 조도를 갖는 용사코팅층을 형성하는 공정; 및 상기 형성된 용사코팅층에, 포드 cup 점도로 7~14초 사이의 점도를 가지며 분자량이 1만~2만 사이의 불소계 수지를 코팅한 후, 자연 경화시킴으로써 두께 150~250㎛의 불소계 수지층을 형성하는 공정;을 포함한다.