建筑用白彩钢板镀层热镀锌镀铝锌彩钢板耐腐蚀性能0.8厚钢结构专用 ... ...

目前，建筑用彩钢板的镀层一般有两种：热镀锌和镀铝锌。镀层厚度越大，耐腐蚀性能越好。镀层厚度主要是影响到彩涂钢板的切口腐蚀性能，切口腐蚀是电化学腐蚀，影响因素有预处理层、底漆、基板厚度、镀层厚度等。在正常情况下，预处理层和底漆相对比较固定，影响切口腐蚀性能的就是基板厚度及镀层厚度了。基板越薄、镀层越厚，耐切口腐蚀的性能越好。

At present, there are two kinds of building color steel plate plating generally: hot galvanizing and aluminum galvanizing.The greater the coating thickness, the better the corrosion resistance.The thickness of the coating mainly affects the incision corrosive performance of the color-coated steel plate. Insect corrosion is electrochemical corrosion, and the influencing factors are pretreatment layer, primer, substrate thickness, coating thickness, etc.Under normal circumstances, the pretreatment layer and the primer are relatively fixed, and the thickness of the substrate and the coating thickness will affect the corrosive performance of the incision.The thinner the substrate and the thicker the coating, the better the incision corrosion resistance.

对于彩钢板来说，两种基板的应用领域区分不大，在相对酸性的环境下，镀铝锌基板是比较好的选择。而对于潮湿的、碱性环境下使用，镀锌基板的切口耐蚀性的优势得以体现。 而对于镀层厚度来说，对屋面板及外墙板的一般要求是热镀锌≥180g/m2（约26μm），镀铝锌≥100g/m2(约27μm)，在使用环境处于重工业区或海边时，国外相关协会都有最低镀锌量的要求，如ECCA规范和澳大利亚标准要求镀锌层重量≥275g/m2（约38μm），镀铝锌≥150g/m2(约40μm)。

For the color steel plate, the application field of the two substrate is not much different, in the relatively acidic environment, the aluminum-plated galvanized substrate is a better choice.For wet and alkaline environment, the advantages of incision corrosion resistance of galvanized substrate can be reflected.For coating thickness, the general requirements for house panels and exterior wall panels are thermal galvanized 180g / m2 (about 26 m), galvanized 100g / m2 (about 27 m), which is in heavy industrial areas or seaside, such as ECCA specifications and Australian standards zinc weight 275g / m2 (about 38 m), 150g / m2 (about 40 m).

合理的选材可以在满足使用要求的同时最大限度的降低成本，不合理的选材则会导致成本增加或产品不合格，所以客户应高度重视合理选材的重要性，佛山市万庆物资有限公司提供售前技术服务，为客户的选材提出专业性的意见和建议。

Reasonable material selection can meet the requirements of use at the same time to minimize the cost, unreasonable material selection will lead to cost increase or unqualified products, so customers should attach great importance to the importance of reasonable material selection, Foshan wanqing materials co., LTD. Provide professional pre-sales technical service, put forward professional opinions and suggestions.