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1. 发明申请

WO1996011801A1 STEEL SHEET FOR LARGE STRUCTURES, HAVING PRIMARY RUST-PROOFING PAINT FILM FORMED THEREON, APPLICATION METHOD OF PRIMARY RUST-PROOFING PAINT ON STEEL SHEET FOR LARGE STRUCTURE, AND COATED STEEL SHEET FOR LARGE STRUCTURE 审中-公开
标题翻译：用于大型结构钢板，具有主要防腐涂层的钢板，大型结构钢板上的主要防腐涂料的应用方法和大型结构的涂层钢板
公开(公告)号：WO1996011801A1
公开(公告)日：1996-04-25
申请号：PCT/JP1995002082
申请日：1995-10-12
申请人： CHUGOKU MARINE PAINTS, LTD. , MITSUBISHI JUKOGYO KABUSHIKI KAISHA
发明人： CHUGOKU MARINE PAINTS, LTD. , MITSUBISHI JUKOGYO KABUSHIKI KAISHA , HARADA, Osamu , OTA, Yojiro , TANABE, Shinichi , WATANABE, Masayasu , TAKAHASHI, Hideki , SHIBATA, Akio , TANIGUTI, Toyoji , TOMOSHIGE, Kiyomi , MATUDA, Kenichiro
IPC分类号： B32B15/08
CPC分类号： B05D7/14 , B05D1/02 , C09D5/106
摘要： A steel sheet for a large structure according to the present invention is a steel sheet for a large structure having a film of a primary rust-proofing paint containing a silicate type binder and zinc powder as a rust-proofing pigment formed on the surface thereof, a mean dry film thickness of the film is 3 to 10 mu m, and a variance index of the film thickness is not greater than 0.18. An application method of a primary rust-proofing paint according to the present invention can form a thin homogeneous film allowing high speed fillet welding at a rate exceeding 100 cm/min on the surface of a steel sheet for a large structure by causing an inorganic zinc primary rust-proofing paint to exhibit its excellent rust-proofing property to maximum. A coated steel sheet for a large structure according to the present invention is produced by forming a powder paint film on the thin homogeneous film of the primary rust-proofing paint formed on the surface on the steel sheet for a large structure. This coated steel sheet can prevent the occurrence of air bubbles inside the powder paint film at the time of baking of the powder paint film, the occurrence of pin-holes on the surface of the powder paint film and cohesive failure of the inorganic zinc primary rust-proofing paint in a coating layer at the time of curing of the powder paint film, that have been the problems in the past, by fully displaying excellent rust-proofing property of the inorganic zinc primary rust-proofing paint. Therefore, the coated steel sheet is excellent in rust-proofness and productivity.
摘要翻译：根据本发明的用于大型结构的钢板是一种大型结构的钢板，其具有在其表面上形成的含有硅酸盐型粘合剂和锌粉作为防锈颜料的初级防锈涂料的膜，膜的平均干膜厚度为3〜10μm，膜厚的方差指数为0.18以下。根据本发明的一次防锈涂料的施加方法可以形成薄均匀膜，其允许在大结构的钢板的表面上以超过100cm / min的速率进行高速角焊，通过使无机锌主要防锈涂料，具有极佳的防锈性能。通过在大型结构的钢板表面形成的一次防锈涂料的薄均匀薄膜上形成粉末漆膜，制造本发明的大型结构的涂层钢板。这种涂覆钢板可以防止在粉末涂料膜的烘烤时在粉末涂料膜内产生气泡，在粉末涂料膜的表面上产生针孔和无机锌一次锈蚀的内聚破坏通过充分发挥无机锌一次防锈涂料的优异的防锈性，粉末漆膜固化时的涂层中的涂料在过去的问题已经成为问题。因此，涂层钢板的防锈性和生产率优异。

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