合理地选择钢桥防腐体系

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1、合理地选择钢桥防腐体系沈波，武峰，易大勇63文章编号：1003—4722(2010)06—0063—03合理地选择钢桥防腐体系沈波，武峰，易大勇(1．北京英达克工业涂料有限责任公司，北京100076；2．武船重型工程有限公司，湖北武汉431415)摘要：钢桥防腐应遵循“长效、便捷、经济、环保”的原则，按此原则，从4个方面论述了钢桥防腐体系的选择。预处理是对钢材的临时保护措施，因钢桥的制造周期短，不应明确要求对钢板进行预处理。因金属喷涂体系具有施工难度大、速度慢、能耗高、成本高及有明火等缺点，不建议在复杂结构和施工条件受限等情况下采用，可采用富锌涂层体系。氟碳面漆和聚硅氧烷面漆宜在高

2、原地区使用，在城市、平原及丘陵地区宜采用丙烯酸聚氨酯面漆。无机富锌防锈防滑涂料的抗滑移系数能够满足钢桥的安装需求，在涂装效率、成本、难易程度、环保、节能及安全等方面均优于电弧喷铝，应推广使用。关键词：钢桥；防腐；防锈；金属喷涂中图分类号：U445．73文献标志码：AReasonableSelectionofAntic0rr0si0nSystemsforSteelBridgesSHENBo，WUFeng。，YIDa—yong。(1．BeijingYingdakeIndustrialCoatingsCo．，Ltd．，Beijing100076，China；2．WuchuanHeavyE

3、ngineeringCo．，Ltd．，Wuhan431415，China)Abstract：Theanticorrosionofsteelbridgesshouldfollowtheprincipleof“longtermeffect，ease，rapidity，cost—savingandenvironmentalprotection”．Inaccordancewiththeprinciple，thereasonableselectionoftheanticorrosionsystemsforthebridgesisdescribedfromthefollowingfourasp

4、ects．Thatis，thepretreatmentisatemporaryprotectionmeasureforsteelsandthere—quirementsforthepretreatmentshouldnotbedefinitelysetforsteelplatesofthebridgessincethemanufacturingtimedurationofthebridgesisgenerallyshort．Themetalsprayingsystemisnotrecommendedforuseundertheconditionsthatthestructuresa

5、recomplicatedandthecon—structionconditionsarerestrictedbecausethesystemhasdisadvantagesofconstructiondifficulty，slowspeed，highenergyconsumption，greatconstructioncostandusageofopenfire，instead，thezincrichcoatingsystemshouldbepreferablyused．Forsteelbridgeslocatedintheplateaure—gion，thefluorocarb

6、onandpolysiloxanetopcoatingsystemsshouldbeusedwhileforthebridgesinthecity，plainandhilly1andregions，theacrylicpolyurethanetopcoatingsystemshouldbeused．Theantislipcoefficientsoftheinorganiczincrichantirustandantislipcoatingscansatisfytherequirementsforsteelbridgesandhasanumberofadvantagesofcoati

7、ngefficiency，cost，easedegree，environmentalprotection，energysavingandsafetyovertheelectricarcsprayingandshouldbepopularizedforapplication．Keywords：steelbridge；anticorrosion；antirust；metalspraying收稿日期：2010—07—02作者简介：沈波(1957一)，男，高级工程师，1984