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A platform for research: civil engineering, architecture and urbanism
HEAVY CORROSION-RESISTANT COATED STEEL MATERIAL AND MANUFACTURING METHOD THEREOF
To provide a heavy corrosion-resistant coated steel material having an excellent impact resistance, in which the edge of anti-corrosion coating and protective coating is hardly peeled off even in a marine environment.SOLUTION: The steel material surface has a composite coating structure where a first primer layer A1, a corrosion resistant coating layer B, a second primer layer A2, and a protective coating layer C are laminated in this order from the lower layer side, an end of this composite coating has extending sections A10 and A20 where the primer layers A1 and A2 outwardly extend rather than the end of the corrosion resistant coating layer B, the end of the corrosion resistant coating layer B is sealed between the primer layers A1 and A2 by surface bonding of them, and an end of the protective coating layer C is bonded to the steel material via the extending sections A10 and A20 of the primer layers A1 and A2. There is no end section which to be a starting point for peeling off of the corrosion resistant coating layer B at an end of the composite coating, and the end of the protective coating layer C is directly bonded to the steel material 1 via the extending sections A10 and A20 of the primer layers A1 and A2, thus high adhesiveness of the covering end is obtained.SELECTED DRAWING: Figure 1
【課題】海洋環境下においても防食被覆や保護被覆の端部の剥離が生じにくい優れた耐衝撃性を有する重防食被覆鋼材を提供する。【解決手段】鋼材表面に下層側から順に第１プライマー層Ａ1、防食被覆層Ｂ、第２プライマー層Ａ2、保護被覆層Ｃが積層した複合被覆を有し、この複合被覆の端部は、プライマー層Ａ1，Ａ2が防食被覆層Ｂの端部よりも外側に延伸した延伸部Ａ10，Ａ20を有し、それらが面接着することにより、防食被覆層Ｂの端部がプライマー層Ａ1，Ａ2間に封入され、且つ保護被覆層Ｃの端部がプライマー層Ａ1，Ａ2の延伸部Ａ10，Ａ20を介して鋼材に接着された被覆構造を有する。複合被覆の端部において、防食被覆層Ｂの剥離の起点となり得る端部箇所が存在せず、且つ保護被覆層Ｃの端部がプライマー層Ａ1，Ａ2の延伸部Ａ10，Ａ20を介して直に鋼材１に接着されるため、被覆端部の高い接着性が得られる。【選択図】図１
HEAVY CORROSION-RESISTANT COATED STEEL MATERIAL AND MANUFACTURING METHOD THEREOF
To provide a heavy corrosion-resistant coated steel material having an excellent impact resistance, in which the edge of anti-corrosion coating and protective coating is hardly peeled off even in a marine environment.SOLUTION: The steel material surface has a composite coating structure where a first primer layer A1, a corrosion resistant coating layer B, a second primer layer A2, and a protective coating layer C are laminated in this order from the lower layer side, an end of this composite coating has extending sections A10 and A20 where the primer layers A1 and A2 outwardly extend rather than the end of the corrosion resistant coating layer B, the end of the corrosion resistant coating layer B is sealed between the primer layers A1 and A2 by surface bonding of them, and an end of the protective coating layer C is bonded to the steel material via the extending sections A10 and A20 of the primer layers A1 and A2. There is no end section which to be a starting point for peeling off of the corrosion resistant coating layer B at an end of the composite coating, and the end of the protective coating layer C is directly bonded to the steel material 1 via the extending sections A10 and A20 of the primer layers A1 and A2, thus high adhesiveness of the covering end is obtained.SELECTED DRAWING: Figure 1
【課題】海洋環境下においても防食被覆や保護被覆の端部の剥離が生じにくい優れた耐衝撃性を有する重防食被覆鋼材を提供する。【解決手段】鋼材表面に下層側から順に第１プライマー層Ａ1、防食被覆層Ｂ、第２プライマー層Ａ2、保護被覆層Ｃが積層した複合被覆を有し、この複合被覆の端部は、プライマー層Ａ1，Ａ2が防食被覆層Ｂの端部よりも外側に延伸した延伸部Ａ10，Ａ20を有し、それらが面接着することにより、防食被覆層Ｂの端部がプライマー層Ａ1，Ａ2間に封入され、且つ保護被覆層Ｃの端部がプライマー層Ａ1，Ａ2の延伸部Ａ10，Ａ20を介して鋼材に接着された被覆構造を有する。複合被覆の端部において、防食被覆層Ｂの剥離の起点となり得る端部箇所が存在せず、且つ保護被覆層Ｃの端部がプライマー層Ａ1，Ａ2の延伸部Ａ10，Ａ20を介して直に鋼材１に接着されるため、被覆端部の高い接着性が得られる。【選択図】図１
HEAVY CORROSION-RESISTANT COATED STEEL MATERIAL AND MANUFACTURING METHOD THEREOF
重防食被覆鋼材及びその製造方法
MATSUI YOSHINORI (author) / ISHIKAWA KAZUTOSHI (author)
2019-12-12
Patent
Electronic Resource
Japanese
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