摘要
采用热盐水实验、盐雾实验对4~6 mm薄壁型钢结构的腐蚀情况进行研究,通过对比实验分析喷砂钢板、镀锌钢板、镀锌+涂层钢板、涂层钢板的耐腐蚀性,通过海上实证实验挖掘各腐蚀方案在实际施工中易出现的问题。结果表明,从对比实验腐蚀情况上看,喷砂钢板和镀锌钢板在900 h盐雾和920 h60℃热盐水实验后已形成明显腐蚀,镀锌+涂层钢板和涂层钢板无腐蚀。从实证实验上看,钢结构桁架在焊接的过程中会破坏其表面的镀锌层,不易进行修补,涂层在焊接前涂装可预留焊接头,焊接后可进行补涂。因此推荐使用涂层设计方案进行海上薄壁型光伏桁架涂装。
The corrosion situation of thin steel structure with 4-6 mm is investigated by means of hot saltwater test and salt fog test.Specifically the anticorrosion performance of sand blasted steel sheet,galvanized steel sheet,coated galvanized steel sheet and coated steel sheet is comparatively analyzed.Meanwhile,the field test at offshore area is carried out to study anticorrosion solutions.The results show that the sand blasted steel sheet and galvanized steel sheet are corroded after salt fog test for 900 h and hot saltwater test for 920 h while no corrosion occurred on the surface of the coated galvanized steel sheet and coated steel sheet.The welding operation might broke the galvanied layer on the surface of steeltruss wherein the borken area is not easy to be repaired.The uncoated area of the coated steel sheet can be prepared for welding operation and can be recoated after welding process.It is concluded that the coating process is recommended for thin steeltruss for photovoltaic energy at offshore area.
作者
董建业
黄凯龙
许立
张洪达
胡思堑
杨明亮
彭毛来
于丽莎
Dong Jianye;Huang Kailong;Xu Li;Zhang Hongda;Hu Siqian;Yang Mingliang;Peng Maolai;Yu Lisha(Shandong Electric Power Engineering Consulting Insitute Corp.,Ltd.,Jinan 250013,China;Luoyang Sunrui Anticorrosion Engineering Technology Co.,Ltd.,Luoyang,Henan 471100,China;Xiamen Sunrui Ship Coating Co.,Ltd.,Xiamen,Fujian 361101,China)
出处
《涂层与防护》
2024年第1期8-12,27,共6页
Coating and Protection
关键词
海上光伏
钢桁架
薄壁
耐腐蚀性
photovoltaic energy at offshore area
steeltruss
thin
anticorrosion performance
