加速彩钢板生锈的九大原因

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温度
涂层软化度高，腐蚀介质易粘附，易渗透到彩钢板基体中，高温时水氧含量会增加，在一定温度下腐蚀速度快。

湿度
基体在缺口处的腐蚀和加工损伤属于电化学腐蚀，由于湿度较低，不易形成腐蚀电池（即电化学电路）。
温差
较大的温差容易冷凝，在裸金属上形成电偶腐蚀。此外，温差大也会导致涂层冷热变形频繁，加速彩钢板涂层的老化和疏松，外部腐蚀性介质容易渗透到基体中。
阳光
紫外光谱属于高频射线，其破坏力大于低能谱。X射线能穿透，γ射线能破坏化学键，产生自由电荷离子，对有机物有致命的危害。因此，从上面可以看出，太阳光的时间和强度影响涂层的结构稳定性，特别是在紫外线较强的区域。
雨水
大雨和酸度肯定会腐蚀钢铁。但降雨对墙体彩钢板和屋面大坡度彩钢板有双重作用，可以清洗钢板表面，洗去表面腐蚀；但对于坡度较低的顶板和排水不畅的部位，降雨量较大，容易造成腐蚀加剧。
风向
类似于水，而且经常伴随着水，它是对材料连接部分的一种测试，因为风会导致连接部分松动，雨水会渗透到建筑物内部。
7、 腐蚀性物质
腐蚀性沉积物，如氯离子和二氧化硫，加速腐蚀。这些沉积物大多发生在沿海地区和工业污染严重的地区（如电厂、冶炼厂等）。
8、 链接模式
一般有重叠、咬边和屈曲。紧固件材料的选择要求其耐腐蚀性能优于彩钢板，否则根据大阴极小阳极的原理，界面会迅速腐蚀磨损。其次，还要保证密封胶的质量。
九，朝向
建筑物的朝向和坡度影响日照时间，从而影响涂层的耐久性。坡度也影响腐蚀性介质或粉尘在彩钢板上的沉降时间。

Temperature

High coating softening, corrosion medium easy to adhere, easy to penetrate into the color steel plate substrate, high temperature water oxygen content will increase, at a certain temperature corrosion speed.
Two.Wet
The corrosion of the substrate at the notch and processing damage belongs to electrochemical corrosion, and it is not easy to form corrosion cell (i.e. electrochemical circuit) due to low humidity.
Three temperature difference
Large temperature difference is easy to condense, forming galvanic corrosion on the bare metal. In addition, large temperature difference also leads to frequent cold and hot deformation of the coating, which will accelerate the aging and loosening of the coating of color steel plate, and the external corrosive medium is easy to penetrate into the substrate.
Four, sunshine
UV spectrum belongs to high frequency ray, which has more destructive power than low energy spectrum. X-ray can penetrate, γ - ray can break chemical bond and produce free charged ions, which are fatal to organic matters. Therefore, it can be seen from the above that the time and intensity of sunlight affect the structural stability of the coating, especially in the areas with strong ultraviolet.
Five. Rai water
Heavy rainfall and acidity will certainly corrode steel. However, the rainfall has a dual effect on the wall color steel plate and the roof color steel plate with large slope, which can clean the surface of the steel plate and wash away the surface corrosion; but for the roof plate with low slope and the part with poor drainage, the rainfall is large, which is easy to cause the corrosion to intensify.
Six. Wind direction
Similar to water, and often accompanied by it, it is a test for the connection parts of materials, because the wind will cause the connection parts to loosen, and rainwater will penetrate into the interior of the building.
7、 Corrosives
Corrosive sediments, such as chloride ions and sulfur dioxide, accelerate the corrosion. Most of these sediments occur in coastal areas and areas with serious industrial pollution (such as power plants, smelters, etc.).
8、 Link mode
Generally, there are overlapping, undercutting and buckling. The selection of fastener material requires that its corrosion resistance is better than that of color steel plate, otherwise, according to the principle of large cathode and small anode, the interface will corrode and wear out quickly. Secondly, the quality of sealant should also be guaranteed.
Nine, facing
The orientation and slope of the building affect the sunshine time, thus affecting the durability of the coating. The slope also affects the settling time of corrosive medium or dust on the color steel plate.